Answers
Answer: A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size (bigger or smaller). Therefore, The scale factor would be 1/2
Related Questions
If 25% of a number is 60 and 90% of the same number is 216, find 65% of that number.
Answers
65 percent of the number 240 is 156, as 25% and 90% of 240 will give 60 and 216 respectively.
How to calculate for the percentageWe shall represent the number with the letter x so that we evaluate for the 25 and 90 percent respectively as follows:
25 percent of x;
25x/100 = 60
x = (60 × 100)/25 {make x the subject}
x = 240
90 percent of x;
90x/100 = 216
x = (216 × 100)/90 {make x the subject}
x = 240
Therefore, 65 percent of the number 240 is derived as:
(65 × 240)/100
15600/100
156.
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Each of 12 refrigerators of a certain type has been returned to a distributor because of the presence of a high-pitched oscillating noise when the refrigerator is running. Suppose that 5 of these 12 have defective compressors and the other 7 have less serious problems. If they are examined in random order, let X = the number among the first 6 examined that have a defective compressor. Compute the following:
(i) P(X = 1)
(ii) P(X ≥ 4)
(iii) P(1≤X ≤3)
(a) .1136, .1212 and 0.7955 respectively.
(b) .1136, .1212 and 0.1136 respectively.
(c) .1136, .1212 and 0.8712 respectively.
(d) .1136, .039 and 0.7955 respectively. (e) .1136, .039 and 0.8712 respectively.
Answers
The probability of one defective compressor among the first 6 examined, the probability of four or more defective compressors among the first 6 examined, and the probability of 1 to 3 defective compressors among the first 6 examined are 0.1136, 0.1212, and 0.7955 respectively.
(a) .1136, .1212 and 0.7955 respectively.
(i) P(X=1) = C(5,1) / C(12,6) = 5/66 = 0.1136
(ii) P(X ≥ 4) = P(X = 4) + P(X = 5) + P(X = 6) = C(5,4) / C(12,6) + C(5,5) / C(12,6) + C(5,6) / C(12,6) = .1212
(iii) P(1≤X ≤3) = P(X = 1) + P(X = 2) + P(X = 3) = C(5,1) / C(12,6) + C(5,2) / C(12,6) + C(5,3) / C(12,6) = 0.7955
The probability of one defective compressor among the first 6 examined is P(X = 1) = C(5,1) / C(12,6) = 5/66 = 0.1136. The probability of four or more defective compressors among the first 6 examined is P(X ≥ 4) = P(X = 4) + P(X = 5) + P(X = 6) = C(5,4) / C(12,6) + C(5,5) / C(12,6) + C(5,6) / C(12,6) = .1212. The probability of 1 to 3 defective compressors among the first 6 examined is P(1≤X ≤3) = P(X = 1) + P(X = 2) + P(X = 3) = C(5,1) / C(12,6) + C(5,2) / C(12,6) + C(5,3) / C(12,6) = 0.7955.
Therefore, the probability of one defective compressor among the first 6 examined, the probability of four or more defective compressors among the first 6 examined, and the probability of 1 to 3 defective compressors among the first 6 examined are 0.1136, 0.1212, and 0.7955 respectively.
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43.How's the economy? A poll conducted by the American Research Group asked individuals their views on how the economy will be a year from now. Respondents were given four choices: Better than today, Same as today, Worse than today, and Undecided. Are these choices nominal or ordinal?
Answers
It is nominal because they all mean the same thing
angle bisector altitude median centroid orthocenter circumcenter incenter find missing values worksheet
Answers
Two straightforward equations are all that are left for us to solve. Therefore, the x and y values determine the coordinates of the orthocenter.
What is angle?When two rays or straight lines intersect at a single endpoint, an angle is created. The vertex of an angle is the location where two points meet. The Latin word "angulus," which means "corner," is where the term "angle" first appeared.
Its coordinates are determined using the orthocenter formula. Let's take a look at the triangle ABC in the illustration above. AD, BE, and CF are the perpendiculars that are drawn from the vertices A(x1,y1), B(x2,y2), and C(x3,y3), respectively. The three elevations come together at point O.
The slope of the triangle's sides must first be determined using the following formula:
m = y2 - y1/x2 - x1
The slope of the triangle ABC's altitudes will now be the line's perpendicular slope.
Line slope perpendicular to the plane is -1/m
Let mAC be the slope of the AC. Hence,
mAC = y3 - y1/x3 - x1
Similarly, mBC = (y3 - y2)/(x3 - x2)
Now, the corresponding altitudes' slopes are as follows:
BE slope: mBE = -1/mAC
AD slope: mAD = -1/mBC
Now, in order to determine the equations of the lines that coincide with BE and AD, we will use the slope point form equation of a straight line.
Hence,
mBE = (y - y2)/(x - x2)
mAD = (y - y1)/(x - x1)
As a result, we are left with two equations that are simple to answer. The orthocenter's coordinates are thus determined by the values of x and y.
The complete question is :
The orthocenter of a triangle is the point where the perpendicular drawn from the vertices to the opposite sides of the triangle intersect each other.
For an acute angle triangle, the orthocenter lies inside the triangle.For the obtuse angle triangle, the orthocenter lies outside the triangle.For a right triangle, the orthocenter lies on the vertex of the right angle.Take an example of a triangle ABC.
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do the following: a) find the real and imaginary parts, and sketch each with a stem plot. b) find the magnitude and phase, and sketch each with a stem plot. g
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a) To find the real and imaginary parts of a complex number, we can use the equation z = x + iy, where x is the real part and y is the imaginary part.
To sketch a stem plot, we need to plot the real part on the x-axis, and the imaginary part on the y-axis. For example, for the complex number z = 4 + 3i, the real part is x = 4 and the imaginary part is y = 3. Therefore, the stem plot would be (4, 3).
b) To find the magnitude and phase of a complex number, we can use the equation z = |z|e^(iθ), where |z| is the magnitude and θ is the phase. To sketch a stem plot, we need to plot the magnitude on the x-axis, and the phase on the y-axis. For example, for the complex number z = 4 + 3i, the magnitude is |z| = 5 and the phase is θ = arctan(3/4). Therefore, the stem plot would be (5, arctan(3/4)).
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given a pair of similar triangles find the missing length x and the missing angles a,b,c
Answers
Angles of similar triangles are always congruent a: 63, b: 88, c: 29 and x = 53.75
Find the missing length?Based on the information available, there are numerous equations for calculating the area of a triangle. As indicated in the calculator above, please use the Triangle formula for additional information and equations for calculating the area of a triangle as well as determining the sides of a triangle using whatever information is available.
find the ratio between the two triangles:
40 on the left corresponds to 50 on the right = 40/50 = 43/x
to find x:
40x = 43 × 50
40x = 215
x = 215/40
x = 53.75
"angles of similar triangles are always congruent."
a: 63
b: 88
c: 29
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Full question:
Given a pair of similar triangles, find the missing length x and the missing angles A, B, and C.
What is the greatest number of consecutive integers
that sum to –11? PLS NOW
Answers
Answer:
It is not possible for the sum of consecutive integers to be -11. The sum of n consecutive integers is n times the average of the first and last integers. The average of any two integers is a fraction, which when multiplied by n, will always yield a fraction, which cannot equal -11. Therefore it is not possible to have n consecutive integers that sum to -11.
Regina bought a handmade quilt at original cost $120 to sale in her quilt store. She marked the price of 55%. What is the amount of markup
Answers
55 percent 120
= (55/100)*120
= (55*120)/100
= 6600/100 = 66
120+66=186
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 35% salt and Solution B is 60% salt. She wants to obtain 150 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?
Answers
Answers:
90 ounces of solution A.
60 ounces of solution B.
====================================================
Explanation:
x = amount of solution A
150-x = amount of solution B
Each amount is in ounces and they add to 150 ounces.
Solution A is 35% salt, so we get 0.35x ounces of pure salt from solution A.
Solution B is 60% salt, so we get 0.60*(150-x) = 90-0.60x ounces of pure salt from solution B.
We want 150 ounces of 45% salt solution, which means we want 150*0.45 = 67.5 ounces of pure salt when everything is mixed.
Here's a table showing this info
[tex]\begin{array}{|c|c|c|} \cline{1-3}& \text{Mixture} & \text{Pure Salt}\\\cline{1-3}\text{Solution A} & \text{x} & 0.35\text{x}\\\cline{1-3}\text{Solution B} & 150-\text{x} & 0.60(150-\text{x}) = 90-0.60\text{x}\\\cline{1-3}\text{Total} & 150 & 150*0.45 = 67.5 \\\cline{1-3}\end{array}[/tex]
Cleaning up the table a bit shows
[tex]\begin{array}{|c|c|c|} \cline{1-3}& \text{Mixture} & \text{Pure Salt}\\\cline{1-3}\text{Solution A} & \text{x} & 0.35\text{x}\\\cline{1-3}\text{Solution B} & 150-\text{x} & 90-0.60\text{x}\\\cline{1-3}\text{Total} & 150 & 67.5 \\\cline{1-3}\end{array}[/tex]
Focus on the "pure salt" column.
We want the 0.35x and 90-0.60x to add to 67.5
So,
0.35x+(90-0.60x) = 67.5
90-0.25x = 67.5
-0.25x = 67.5-90
-0.25x = -22.5
x = -22.5/(-0.25)
x = 90
She must use 90 ounces of solution A.
150-x = 150-90 = 60 ounces of solution B must be used as well.
-------------------
Check:
35% of 90 = 0.35*90 = 31.5 ounces of pure salt comes from solution A.
60% of 60 = 0.60*60 = 36 ounces of pure salt comes from solution B.
31.5+36 = 67.5 ounces of pure salt in total, which matches with the value mentioned earlier. The answers are confirmed.
Not all visitors to a certain company's website are customers,. In fact, the website administrator estimates that about 12% of all visitors to the website are looking for other websites. Assuming that this estimate is correct, find the probability that, in a random sample of 5 visitors to the website, exactly 2 actually are looking for the website
Answers
This question involves the binomial probability distribution. The probability of exactly 2 successful outcomes (in this case, visitors who are looking for the website) in 5 trials (visitors to the website) can be calculated using the formula:
P(X = 2) = (5C2)(0.12)^2(0.88)^3
Where C represents the binomial coefficient and 0.12 and 0.88 represent the probability of a successful outcome (looking for the website) and unsuccessful outcome (not looking for the website), respectively.
Calculating this gives:
P(X = 2) = (5C2)(0.12)^2(0.88)^3 = 100.01440.4712 = 0.066
So the probability that, in a random sample of 5 visitors to the website, exactly 2 are looking for the website is 0.066 or about 6.6%.
for a nrw musical adult tickets cost 5 dollars and students cost three 56 tickets were sold for a total of 232
Answers
Answer: We can set up a system of equations to represent the given information:
Let x be the number of adult tickets sold
Let y be the number of student tickets sold
x + y = 56 (the total number of tickets sold is 56)
5x + 3y = 232 (the total amount of money made is 232 dollars)
To find the number of adult and student tickets sold, we can use the first equation to solve for one of the variables in terms of the other, and then substitute that into the second equation.
x + y = 56
x = 56 - y
Now we can substitute this value of x into the second equation:
5(56 - y) + 3y = 232
280 - 5y + 3y = 232
280 = 8y
y = 35
So, 35 student tickets were sold, and 56 - 35 = 21 adult tickets were sold.
Step-by-step explanation:
the accompanying sketch represents a maze of oneway streets in a city in the united states. the traffic volume through certain blocks during an hour has been measured. suppose that the vehicles leaving the area during this hour were exactly the same as those entering it.
Answers
Based on the sketch, it appears that the traffic flow in the city would remain the same during the hour. All of the vehicles entering the area would leave it, meaning that the same number of vehicles would remain in the area for the entire hour.
1. The sketch shows a maze of one-way streets in a city in the United States.
2. The traffic volume through certain blocks during an hour has been measured.
3. Suppose that the vehicles leaving the area during this hour were exactly the same as those entering it.
4. This means that the same number of vehicles would remain in the area for the entire hour, as the vehicles entering the area would be the same as those leaving it.
Based on the sketch, it appears that the traffic flow in the city would remain the same during the hour. All of the vehicles entering the area would leave it, meaning that the same number of vehicles would remain in the area for the entire hour.
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A ball is thrown straight downward from the top of a tall building. The initial speed of the ball is10 m/s. It strikes the ground with a speed of60 m/s. How tall is the building? 28. A baseball is thrown straight downward with an initial speed of40ft/sfrom the top of the Washington Monument (555fthigh). How long does it take to reach the ground, and with what speed does the baseball strike the ground?
Answers
The tall of the building is 175m and the baseball strikes the ground in 4.53 seconds, 195 ft/s.
Assume that the acceleration due to gravity is 10m/s2.
The equation for the ball’s velocity in the downward direction is
v(t) = at + v₀.
Here
v₀=10m/s a=10m/s² v(t)=60m/s
Solving this for t we get the:
[tex]t =\frac{60m/s-10m/s}{10m/s^2}\\ \\t=\frac{50m/s}{10m/s^2}\\[/tex]
t=5s
The total distance traveled will be
[tex]x(t)=\frac{1}{2} at^2+v_{0} +x_{0}[/tex]
Here x₀ = 0 and we get:
[tex]x(t)=\frac{1}{2} (10m/s^2)(5s)^2+(10m/s)(5s)[/tex]
x=125m+50m
x=175m
The given values are:
u = 50 ft/s
h = 555 ft
g = 32 ft/s²
Let the time taken by the ball to reach the ground be t and the velocity of the ball as it hits the ground be v.
Use the third equation of motion
v²=u²+2as
v²=50²+2*32*555
v = 195 ft /s
Thus, the ball strikes the ground with a velocity of 195 ft/s.
Use the first equation of motion
v = u + at
195 = 50 + 32 t
32 t = 145
t = 4.53 second
Thus, the ball reaches the ground in 4.53 seconds.
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andre measured the lenghts of 10 sticks to the nearest inch. the lenghts of the sticks were 3,3,4,3,3,5,4,6,5 and 4 inches
Answers
The 4th line plot picture correctly shows the data of the lengths of the sticks that were 3, 3, 4, 3, 3, 5, 4, 6, 5 and 4 inches.
What is line plot?A line plot is a graph that uses symbols to represent data above a frequency number line. It is used to arrange the data simply and is very simple to understand.
A line plot is a graphical representation of data on a number line which uses dots, crosses, or any other symbol. The scale of the graph is represented by each mark, which corresponds to a particular quantity.
The data on a number line can be graphically represented using symbols using a line plot graph. In contrast to a line graph, no cartesian plane or x and y axes are used in this data representation. Simple lines are drawn on a number line to represent a line plot graph.
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Full question:
Andre measured the lengths of 10 sticks to the nearest inch. the lenghts of the sticks were 3,3,4,3,3,5,4,6,5 and 4 inches. Click on the line plot that shows these data. Lengths of Sticks (in inches) Lengths of Sticks (in inches) Lengths of Sticks (in inches) Lengths of Sticks.
arundel company disclosed the following information for its recent calendar year. income statement data selected year-end balance sheet data revenues $ 100,000 accounts receivable decrease $ 24,000 expenses: purchased a machine for cash 10,000 salaries expense 84,000 salaries payable increase 18,000 utilities expense 14,000 interest payable decrease 8,000 depreciation expense 14,600 interest expense 3,400 net loss $ (16,000) prepare the operating activities section of the statement of cash flows using the indirect method. (amounts to be deducted should be indicated with a minus sign.)
Answers
The operating activities section of the statement of cash flows for the company using the indirect method showed a net cash used by operating activities of $(4,400).
Net Loss $(16,000)
Adjustments to Reconcile Net Loss to Net Cash Used by Operating Activities:
Depreciation Expense 14,600
Decrease in Accounts Receivable 24,000
Increase in Salaries Payable (18,000)
Decrease in Interest Payable (8,000)
Net Cash Used by Operating Activities $(4,400)
The operating activities section of the statement of cash flows for the company using the indirect method showed a net cash used by operating activities of $(4,400). This was calculated by adjusting the net loss of $(16,000) with depreciation expense, decrease in accounts receivable, increase in salaries payable, and decrease in interest payable.
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Last year, The Lakewood Times had a total of 4,770 subscribers. This year, after the paper
was bought out, it had 6,201 subscribers. What is the percent of increase in the number of
subscribers?
%
Answers
The Lakewood Times had a 30.4% increase in the number of subscribers after it was bought out.
What is the percentage increase?
Percent increase is a way of measuring how much something has increased relative to its original value. It is expressed as a percentage, and it is calculated by taking the difference between the new value and the original value, and then dividing that difference by the original value, and then multiplying by 100.
Formula: % increase = (new value - original value) / original value x 100
To find the percent increase, you can use the formula:
% increase = (new value - old value) / old value x 100
In this case, the percent increase would be:
% increase = (6201 - 4770) / 4770 x 100 = 30.4%
Hence, The Lakewood Times had a 30.4% increase in the number of subscribers after it was bought out.
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which of the following is/are true? (select all that apply) group of answer choices if augmented matrices of two linear systems are row equivalent, the systems have the same solution set. the row replacement operation, when performed on a matrix, results in interchanging two rows.
two matrices are called row equivalent if one matrix can be transformed into another by applying a sequence of elementary row operations. in an echelon form of a matrix, all entries in a column below the leading entry are zero. the reduced echelon form of a matrix is not defined uniquely.
Answers
The following statements are true: if augmented matrices of two linear systems are row equivalent, the systems have the same solution set; two matrices are called row equivalent if one matrix can be transformed into another by applying a sequence of elementary row operations; in an echelon form of a matrix, all entries in a column below the leading entry are zero; the reduced echelon form of a matrix is not defined uniquely.
The row replacement operation, when performed on a matrix, results in interchanging two rows. This statement is not true. Row replacement operations can also be used to add multiples of one row to another, it doesn't necessarily interchange two rows.
The statement "if augmented matrices of two linear systems are row equivalent, the systems have the same solution set." is true. Row equivalence is a property of matrices that describes how two matrices can be transformed into one another by performing elementary row operations. If two matrices are row equivalent, it means that they can be transformed into the same row echelon form, which implies that they have the same row space, and therefore the same solution set.
The statement "two matrices are called row equivalent if one matrix can be transformed into another by applying a sequence of elementary row operations." is true. Two matrices are row equivalent if one matrix can be transformed into another by applying a sequence of elementary row operations, such as row interchanges, row scaling, and row replacement.
The statement "in an echelon form of a matrix, all entries in a column below the leading entry are zero." is true. An echelon form of a matrix is a matrix that has the following properties: all non-zero rows are above any rows of all zeroes, the leading entry of a non-zero row is to the right of the leading entry of the row above it. In an echelon form of a matrix, all entries in a column below the leading entry are zero.
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Vertical angles: Which of the sets of angles are vertical angles?
a
a and b
a and c
O a and d
Ob and c
Ob and d
Oc and d
b
Answers
There are two vertical angles created by the intersection of two lines.
What is meant by vertical angles?An isosceles triangle has a vertical angle that is twice as large as the total of its base angles. Angles that are vertically opposed to one another are always equal to one another. A vertical angle and the angle to which it is next are also supplementary angles; that is, they sum up to 180 degrees. For instance, if two lines make an angle with X = 45°, the opposing angle will also be 45°.Two vertical angle pairs make up a total of four angles, which always sum to 360 degrees.Angles that come from each pair of vertical angles are referred to as neighboring angles and are additional (the angles sum up to 180 degrees).To learn more about vertical angles, refer to:
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Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, A = {1, 3, 5, 7, 9}, B = {2, 4, 6, 8, 10}, and C = {1, 2, 3, 4, 7, 8}. List the elements of each set. (Enter your answers using roster notation. Enter EMPTY or ∅ for the empty set.) (a) AC $$ Incorrect: Your answer is incorrect. (b) B ∪ C (c) C ∪ CC
Answers
The elements of each set are given as follows:
a) A and C: {1, 3, 7}.
b) B U C = {1, 2, 3, 4, 6, 7, 8, 10}
c) C U C' = U.
How to realize the operations with sets?The intersection operation between two sets is composed by the elements that belong to both sets, hence:
A and C: {1, 3, 7}.
(as the elements 1, 3 and 7 belong to both of the sets).
The union operation between two sets is composed by the elements that belong to at least one of the sets, hence:
B U C = {1, 2, 3, 4, 6, 7, 8, 10}
The union between a set and it's complement is always the universal set, hence:
C U C' = U.
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what property states that if two sides are congruent, then the angles opposite to them are congruent as well?
Answers
The converse of the Pythagorean Theorem states that if two sides of a triangle are congruent, then the angles opposite to them are also congruent. This property is known as the Corresponding Angles Postulate.
The Pythagorean Theorem states that the sum of the squares of the lengths of the two sides of a right triangle are equal to the square of the length of the hypotenuse. The theorem is written as a^2 + b^2 = c^2. The converse of the Pythagorean Theorem states that if two sides of a triangle are congruent, then the angles opposite to them are also congruent. This property is known as the Corresponding Angles Postulate. To prove this postulate, we can start with an arbitrary triangle ABC. If we extend the side AC to D, then we can create a line parallel to BC, creating two similar triangles, ABC and ADC. Since similar triangles have corresponding angles that are congruent, then angle A = angle D. Since side AC is congruent to side AD, then angle A is also congruent to angle B. This proves the Corresponding Angles Postulate.
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Which of the following correlation coefficients indicates the strongest relationship between two variables?
a. -.90 b. -.50 c. +.80 d. +.25
Answers
c. +.80 is correct.
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which of the following is the solution to the compound inequality? 3x+5> or -2x-7>5
Answers
The solution of the compound inequality 3x + 5 > -1 or -2x-7 > 5 is x > -2 or x < -6.
How to solve compound inequality?Inequalities are mathematical expressions involving the symbols >, <, ≥ and ≤.
A compound inequality is an inequality that combines two simple inequalities.
Therefore,
3x + 5 > -1 or -2x-7 > 5
Let's solve the inequality individually
3x + 5 > -1
3x > -1 - 5
3x > -6
x > -6 / 3
x > -2
Therefore,
-2x - 7 > 5
-2x > 5 + 7
-2x > 12
x > 12 / -2
x < -6
Hence,
x > -2 or x < -6
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what is the unit rate of 6/11 1/6
Answers
Answer:
Step-by-step explanation:
Answer:
36/11 or 3.2727
Step-by-step explanation:
A unit rate is a rate with 1 in the denominator.
Since you didn't specify, I assume 6/11 per 1/6 rate.
Divide 6/11 by 1/6
[tex]\frac{6}{11} /\frac{1}{6}[/tex]
Multiply the reciprocal:
[tex]\frac{6}{11} *\frac{6}{1}=\frac{36}{11}[/tex]
The Cincinnati zoo had 25 snakes last year and this year they have 30 snakes what is the percent increase in snakes from last year to this year
Answers
The percentage increase in snakes from last year to this year at the Cincinnati Zoo is 20%.
What is the percentage increase?The percentage increase refers to the ratio of the increase in the number of snakes in the zoo.
The percentage increase can be computed as the quotient of the amount of increase divided by the previous number of snakes, multiplied by 100.
The number of snakes in the zoo last year = 25
The number of snakes in the zoo currently = 30
The increase in the number of snakes = 5 (30 - 25)
The percentage increase = 20% (5/25 x 100)
Thus, we can conclude that the number of snakes in the Cincinnati Zoo has increased by 20 percent since last year.
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What conditions must be met for the results of an ANOVA test to be reliable? Check all that apply.
A) The observations must be independent of each other and randomly selected from their populations.
B) The variances for each population must be approximately equal to each other.
C) The populations from which each group is drawn must be approximately Normal.
D) The hypothesized means of the populations from which each group is drawn must be approximately equal
Answers
The results of the ANOVA test may not be reliable.
The conditions that must be met for the results of an ANOVA test to be reliable are that the observations must be independent of each other and randomly selected from their populations (A). Additionally, the variances for each population must be approximately equal to each other (B). This can be tested with the F-test, which is calculated by dividing the variance of the sample means by the variance of the individual observations. This test is used to determine if the variability between the groups is greater than the variability within the groups. If the F-test returns a value greater than 1, then the variances are not equal and the results of the ANOVA test may not be reliable. Lastly, the populations from which each group is drawn must be approximately Normal (C). This can be tested with a Shapiro-Wilk test or a visual inspection of a histogram or qqplot. If the populations are not normally distributed, then the results of the ANOVA test may not be reliable. The hypothesized means of the populations from which each group is drawn must be approximately equal (D). This can be tested with a t-test or a confidence interval. If the means are significantly different, then the results of the ANOVA test may not be reliable.
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Select the correct answer.
Rita is reviewing her electricity bills for the past year. The monthly bills were:
$92, $98, $90, $99, $96, $91, $89, $106, $95, $102, $96, $99.
Which measure should Rita use to find the average monthly bill for the year?
A.
range
B.
interquartile range
C.
median
D.
mean
Answers
D.mean=average
Add up all of them and divide it by the number of months which is 12 to get the average
I'm pretty sure the answer is D.mean absolute deviation.
I hope it'll help you.
5. how much are you willing to pay to play the following game? you start with $1. you flip a fair coin. if it lands on heads, you double your winnings and flip again. if it lands on tails, the game is over and you collect the money you've won. you continue playing until you land on tails. (asked by point72)
Answers
I'm willing to pay up to $1 to play the game. If I get lucky and the coin lands on heads multiple times, I could potentially win more than $1.
The game is quite simple. I start with $1 and then flip a fair coin. If I get heads, I double my winnings and flip the coin again. I will keep flipping the coin until I get tails, at which point the game is over and I collect the money I have won. Depending on how lucky I get, I could potentially win more than $1. Therefore, I am willing to pay up to $1 to play the game. The expected value of this game is $1.50. This is because, on average, I will get heads 50% of the time and tails 50% of the time. So, if I get heads every time, I will double my winnings each time and end up with $2. If I get tails every time, I will end up with $1. Therefore, the expected value is the average of these two outcomes, which is $1.50. There is also some risk involved in this game. If I get unlucky and get tails on my first flip, then I will only get my money back and not make any profit. Therefore, I have to be willing to take on some risk if I want to try and make a profit. It is important to note that this game does not guarantee a profit. The expected value may be $1.50, but I could end up making less or more than that depending on how lucky I get. Therefore, I have to be willing to accept some uncertainty if I want to play this game.
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Which of the following conditions or set of conditions must be met for a parallelogram to be a rectangle?
A. Diagonals are perpendicular.
B. Diagonals are congruent.
C. All sides are congruent.
D. The length of a diagonal is equal to the length of a side.
Answers
A parallelogram can only be a rectangle if the following conditions are satisfied: B) The diagonals must be congruent, and A) the diagonals must be congruent and perpendicular.
What is meant by parallelogram?A unique kind of quadrilateral known as a parallelogram is defined by having both pairs of its opposite sides parallel and equal. The opposing sides of a parallelogram are all parallel and of equal length. a quadrilateral parallelogram. Rhombus: An equal-length parallelogram with four sides. A parallelogram is a square. Always. This is accurate. A square is a quadrilateral with two sets of parallel sides, four right angles, and four congruent sides.Since not all parallelograms have equal sides, not every parallelogram is a rhombus. The opposite is true, though, when every rhombus is a parallelogram.Every rectangle is a parallelogram, but not every parallelogram is a rectangle, is the correct statement.Therefore,
One feature of a parallelogram is that its diagonals are divided in half. A rectangle also has congruent diagonals.
In addition to being congruent, the diagonals in a square are perpendicular to one another.
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Solve for the indicated variable.
H = kx - kx0 for x
Answers
Answer:
5.0 if you love life
Step-by-step explanation:
use the method of midpoint rectangles (do not use the integral or antiderivative) to approximate the area under the curve f ( x )
Answers
The method of midpoint rectangles is a numerical integration technique used to approximate the area under a curve.
It is based on the idea of breaking up the area under the curve into a series of rectangles and approximating the area of each rectangle using the midpoint of the interval.
For example,
Let's say we want to approximate the area under the curve f(x) = x^2 from x = 0 to x = 2 using the method of midpoint rectangles.
We divide the interval into n = 4 subintervals of width 0.5.
We can calculate the midpoints of the intervals as follows:
interval 1: (0,0.5)
interval 2: (0.5,1)
interval 3: (1,1.5)
interval 4: (1.5,2)
We find the height of each rectangle as the value of f(x) at the midpoint of the interval.
interval 1: f(0.25) = 0.25^2 = 0.0625
interval 2: f(0.75) = 0.75^2 = 0.5625
interval 3: f(1.25) = 1.25^2 = 1.5625
interval 4: f(1.75) = 1.75^2 = 3.0625
We multiply the width of each rectangle (0.5) by the height of each rectangle to find the area of each rectangle:
interval 1: 0.5 * 0.0625 = 0.03125
interval 2: 0.5 * 0.5625 = 0.28125
interval 3: 0.5 * 1.5625 = 0.78125
interval 4: 0.5 * 3.0625 = 1.53125
Finally, we add the areas of all the rectangles to find the total approximate area under the curve:
0.03125 + 0.28125 + 0.78125 + 1.53125 = 2.64375
Hence, using this method the area under the curve f(x) = x^2 from x = 0 to x = 2 is approximately 2.64375.
Note: The precision of the result will depend on how many rectangles you use, and how small you make the rectangles.
The more rectangles we use and the smaller width of each rectangle, the more accurate our result will be.
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