a) The least score that you need to get on the last test and still earn a C is given as follows: 34.
b) With the least score counting twice, the least score that you need to earn a C is given as follows: 52.
How to obtain the mean of a data-set?The mean of a data-set is obtained as the sum of all the elements in the data-set divided by the number of elements in the data-set.
The scores for this problem are given as follows:
83, 70, 83, 80 and x.
(in which x is the score of the fifth test).
The least score that you could get on the last test and still earn a C is found when the mean is of 70, hence>:
(83 + 70 + 83 + 80 + x)/5 = 70
316 + x = 350
x = 350 - 316
x = 34.
With the final test counting twice, you would have the equivalent to six scores, which would be given as follows:
83, 70, 83, 80, x and x.
Hence the least score would be obtained as follows:
(83 + 70 + 83 + 80 + 2x)/6 = 70
316 + 2x = 420
2x = 104
x = 104/2
x = 52.
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which is the value of y in the solution to the following system of equations? x-4y-8=20
Answer: y = x/4 -7
Step-by-step explanation: hope this is right i was always good at math
I have added a screenshot.
The probability that people aged between 34 to 65 have a certain disease is 0.95.
What is probability?Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.
Given, A stem-leaf diagram of people of different ages having a certain disease.
The probability that people have a certain disease between 35 and 64 years of age is,
= P(35 - 44) + P(45 - 54) + P(55 - 64).
= 0.14 = 0.39 + 0.42.
= 0.95.
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Find the volume of the combined solid from the figure.
Answer:
1734
Step-by-step explanation:
We can simply solve the volume of the 2 different cubes. The bigger cube's volume is 15*12*8 = 1440. The volume of the small cube is 6*7*(15-4-4)=294.
So the total volume should be 1734
Answer:
1944 cm³
Step-by-step explanation:
Two rectangular parallelepipeds:
Upper: 12 x 7 x 6 = 504 cm³
Lower: 12 x 15 x 8 = 1440 cm³
Total: 504 + 1440 = 1944 cm³
It takes you 53 minutes to bike 15 miles. At that same rate, about how long does it take you to bike 100 miles?
Answer:
795
Step-by-step explanation:
you mutiply 53 x 15 which gives you 795
Answer:
You have to take the 53 and divide it by 15 which gives you 3.53 repeating so than take 3.53 and multiply by 100 and that gives you 353 minutes as you answer
Step-by-step explanation:
Find the sum of the first seven terms of the geometric sequence series having the following information: 2-8+32- … +a n
Answer:
6554-------------------------------
From the given information we can see:
The first term is a = 2,Common ratio is r = - 4Use the equation for the sum of the first n terms:
Sₙ = a(rⁿ - 1)/(r - 1)S₇ = 2((-4)⁷ - 1)/(-4 - 1) = 6554Answer:
[tex]S_7=6554[/tex]
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{7 cm}\underline{Sum of the first $n$ terms of a geometric series}\\\\$S_n=\dfrac{a(1-r^n)}{1-r}$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the first term. \\ \phantom{ww}$\bullet$ $r$ is the common ratio.\\\end{minipage}}[/tex]
Given geometric series:
[tex]2-8+32-...+a_n[/tex]
The first term (a) of the sequence is 2:
[tex]\implies a=2[/tex]
To find the common ratio (r), divide consecutive terms:
[tex]\implies r=\dfrac{a_2}{a_1}=\dfrac{-8}{2}=-4[/tex]
To find the sum of the first 7 terms, substitute the found values of a and r into the formula, along with n = 7:
[tex]\implies S_7=\dfrac{2(1-(-4)^7)}{1-(-4)}[/tex]
[tex]\implies S_7=\dfrac{2(1-(-16384))}{5}[/tex]
[tex]\implies S_7=\dfrac{2(16385)}{5}[/tex]
[tex]\implies S_7=\dfrac{32770}{5}[/tex]
[tex]\implies S_7=6554[/tex]
Points of discontinuity, holes, vertical asymptotes, and horizontal asymptote. (Please show work)
Discontinuities are points where the function is undefined. Holes are points where the graph has a break in it. Vertical asymptotes are lines on a graph where the function approaches infinity and horizontal asymptotes are lines on a graph where the function approaches a limit.
What is rational functions?The theory used in this question is the theory of rational functions. This theory is used to identify points of discontinuity, holes, vertical asymptotes, and horizontal asymptotes in rational functions.
In the given question,
2. f(x) = x-2/x-4
Points of discontinuity: x = 4
Holes: None
Vertical Asymptote: x = 4
Horizontal Asymptote: None
3. f(x)= 3x-3/x2-1
Points of discontinuity: x = 1
Holes: None
Vertical Asymptote: x = 1
Horizontal Asymptote: y = 0
4. f(x) = x²+5x+6/x²+6x+9
Points of discontinuity: None
Holes: None
Vertical Asymptote: None
Horizontal Asymptote: y = 1
5. f(x) = (x+3)(x-2)/(x-2)(x+1)
Points of discontinuity: None
Holes: x = -1, x = 2
Vertical Asymptote: x = -1, x = 2
Horizontal Asymptote: y = 1
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please help me thank you!
Answer:2200 seats per minute
Step-by-step explanation:
draw a line from 6 minutes upwards till your line and the line on the graph meet then where the line meets draw another line going across(left)
Read across (left side) and the number will be your answer
I just need this question left pls help
By using the fact that the sum of the interior angles must be 180°, we wil see that:
x = 110°.
How to find the value of x?First, remember that the sum of the interior angles of a triangle is alway equal to 180°.
We also can see that the interior angle that is adjacent to x can be written as:
a = 180° - x
Then the sum of the interior angles will give:
30° + 80° + (180° - x) = 180°
30° + 80° - x = 0
110° - x = 0
110° = x
That is the value of x.
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what is the rate of interest per annum at which 8000 will yield 1650 after 10years
Step-by-step explanation:
annual interest = 1650
10
= 165
[tex] \frac{165}{8000} \times 100 = 2.0625\%[/tex]
in the accompanying diagram parallel lines ab and cd are cut by transversal ef. If e m<2= 72, what is m1
The measure of m<1 is 108 degrees from the provided figure.
Line geometry involving transversalsA line is an object in geometry that is indefinitely long and has neither breadth nor depth nor curvature. Lines are therefore one-dimensional objects, even if they can exist in spaces with two, three, or more dimensions.
From the diagram, we have the following parameters
m<2 = 72 degrees
Required parameters
The measure of angle m<1
From the figure, the sum of the interior angle is equivalent to 180 degrees, that is:
m<1 + m<2 = 180
m<1 = 180 - m<2
m<1 = 180 - 72
m<1 = 108 degrees
Hence the measure of m<1 from the given figure is 108 degrees.
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The histogram provided summarizes the high temperature recorded each day for one month. Which of the following conclusions is accurate accordin
the data provided?
A The temperatures were generally increasing throughout the first few weeks of the month.
B The most frequently recorded high temperature during the month was 78 degrees.
C There were fewer days with high temperatures between 77 and 80 degrees than between 65 and 76 degrees.
D There were an equal number of days with high temperatures of 81 degrees or higher and days with high temperatures of 76 degrees or lower.
PLS ANSWERR
Answer:
Step-by-step explanation:
Given the histogram provided, it is not possible to draw a conclusion as it doesn't show any data.
A histogram is a graphical representation of a dataset, showing the frequency of each data point in a specific range. The x-axis shows the range of data points, and the y-axis shows the frequency of each data point. Without the data, it's impossible to draw any conclusion.
In order to draw a conclusion, we need to know the data that the histogram represents, such as the range of temperatures, the frequency of each temperature, and the number of days in the month. Based on that information, we can draw conclusions about the data provided.
Jordan invested $370 in an account in the year 2005, and the value has been growing
exponentially at a constant rate. The value of the account reached $480 in the year
2012. Determine the value of the account, to the nearest dollar, in the year 2017.
The constant interest rate of the Jordan's investment is 3.8%
The amount in 2017 is calculated to be $578.86
What is an exponential function?Exponential function is a type of function of the form: f(x) = a(b)^x. It is made up of 3 main parts
a = the starting or initial value
b = the base function
x = the exponents
Considering the given problem, f(x) = a(b)ˣ
the starting, a = 370
the base = ?
the exponents = year periods
the base is calculated below
form 2012 to 2005 is 7 years hence x = 7
amount inn 2012 = amount in 2005 (b)ˣ
480 = 370 * b⁷
48/27 = b⁷
b = 1.038
this is same as 3.8% increment
The amount in 2017
from 2017 to 2005 is 12
= 370 * 1.038¹²
= 578.86
The amount in 2017 is $578.86
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The table describes the quadratic function p(x).
x p(x)
−4 24
−3 9
−2 0
−1 −3
0 0
1 9
2 24
What is the equation of p(x) in vertex form?
p(x) = 2(x − 1)2 − 3
p(x) = 2(x + 1)2 − 3
p(x) = 3(x − 1)2 − 3
p(x) = 3(x + 1)2 − 3
Step-by-step explanation:
[tex]p(x) = 3 {(x + 1)}^{2} - 3[/tex]
Shop a charges $275.00 for an oil change and has a gross oil profit of 39.1%. What is the profit per lube
The profit from Lube for Store A would be = $8.31.
What is the profit per unit?Unit profit can be obtained by subtracting the cost of the product from the selling price.
Data and calculations:
Selling price for oil change = $275
Percentage of total oil revenue = 39.1%
Cost of oil per gallon = $21.25
Selling price per gallon = $29.56 ($21.25 x $1,391)
Total income = $8.31 ($29.56 - $21.25)
Therefore, the profit from Lube for Shop A would be= $8.31.
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Complete question:
Shop A charges $275.00 for an oil change and has a gross oil profit percent of 39.1% for its total oil gross profit %. Shop B charges $275.00 for an oil change and has a gross oil profit percent of 28.4% for its total oil gross profit %. Both shops pay $21.25 per gallon of oil. What is the Profit per Lube for Shop A?
By what percent will a percent change if its numerator is decreased by 10% and its denominator is decreased by 70%. Please answer ASAP!!!
The fraction will change by 200%.
Let the fraction is = x/y.
If its numerator is decreased by 10% then the new numerator is:
x - 10% of x
= x - 0.10x
= 0.90x
If its denominator is decreased by 70% then the new denominator is:
y - 70% of y
= y - 0.70y
= 0.30y
So the new fraction is = .
So the change in fraction is in percentage is:
So the fraction will change by 200%.
What is the mode number to 90 93 93 96 100
Answer:
93
Step-by-step explanation:
the mode is the value in the data set that occurs most often.
in this case that is 93 , so
mode = 93
Answer:
93
Step-by-step explanation:
the number which has higher frequency is the mode. here 93 comes 2 times. thus, 93 is the mode.
At what point will these two lines meet?
Graph both lines in the sketch box to find your answer
Y=2x-5
Y=-2/3x+3
Write your answer as an ordered pair with parenthesis.
The ordered pair which represents the point of intersection of the system of equations, y = 2x - 5 and y = -2/3x + 3 is: (3, 1).
How to Find the Solution of a System of Equations?The solution to a system of equations can be determined by graphing both equations that represent the lines on a coordinate plane. Search for the point where both lines intersect each other.
The point where they intersect each other is the ordered pair that represents the solution of the system of equations.
Given the following system:
y = 2x - 5
y = -2/3x + 3
y = 2x - 5 is the red line in the graph while y = -2/3x + 3 is the blue line.
Both lines intersect at (3, 1). Therefore, the solution to the system is: (3, 1).
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compute
3.04*21.5-9.12/3.8
The required simplified value of the given expression is given as 62.96.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Given expression
= 3.04 × 21.5 - 9.12 / 3.8
= 65.36 - 2.4
= 62.96
Thus, the required simplified value of the given expression is given as 62.96.
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At a gym you swim every four days run every five days and cycle every 12 days if you did all three activities they have and how many days will you do all three activities again
Answer:
Just find the LCM of all the days.
LCM of 4,5 and 12 is 60
Therefore, u will have to do all the activities again after 60 days.
During the 2005 football season, Team Tackle beat Team Sack by 19 points. If their combined scores totaled 37, find
the individual team scores.
Team Tackle's score was
Team Sack's score was
points.
points.
Team Tackle's score was 28 points. And team Sack's score was 9 points.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
During the 2005 football season, Team Tackle beat Team Sack by 19 points. If their combined scores totaled 37.
Let 'x' be the Tackle's score and 'y' be the Sack's score. Then the equations are given as,
x + y = 37 ...1
x = y + 19 ...2
From equations 1 and 2, then we have
y + 19 + y = 37
2y = 18
y = 9
Then the value of 'x' is given as,
x = 9 + 19
x = 28
Team Tackle's score was 28 points. And team Sack's score was 9 points.
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simplify the expression 8h + (-7.7d) -14 +5d - 3.3h
The expression 8h + (-7.7d) -14 +5d - 3.3h can be simplified as
4.7h - 2.7d - 14
What is a Linear Expression?A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power (1). In other words, none of the exponents can be greater than 1.
For example, x² is a variable raised to the second power, but x is a variable raised to the first power.
5 is an example of a constant.
8h + (-7.7d) -14 +5d - 3.3h
Taking like terms
8h - 3.3h + 5d - 7.7d - 14
4.7h - 2.7d - 14
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The information in the table is linear.
true or false
The table is not linear.
One pair of segments in the figure above is parallel. Based on the appearance of the lines, which statement about the figure is true?
AB I BC
AB I CD
AB I AD
AD I BC
Answer:
Step-by-step explanation:
Ad and BC because they are 2 lines going in the same place , they are the same
work this out for points and brainliest !
Answer:
P = 5c + 11 , c = 3
Step-by-step explanation:
(a)
the perimeter P) is the sum of the sides.
Note that the 2 sides with a ' dash' through them are congruent
summing the 4 sides
P = c + 5 + 3c - 2 + 10 - 2c + 3c - 2 ( collect like terms )
= 5c + 11
(b)
equate the expression for P from (a) to 26
5c + 11 = 26 ( subtract 11 from both sides )
5c = 15 ( divide both sides by 5 )
c = 3
Are the two triangles below similar? If so, write a similarity statement, and stay with similar to criteria can be used to prove it.
Similarity statement-
1. PNK DKG
2. PNK GDK
3. PNK KGD
4. The triangles are not similar
Criteria-
1. AA
2. SAS
3.SSS
4. Not applicable, the triangles are not similar
The two triangles below show the property of similarity.
The first property is the Side.
The side PN is similar to the side DG.
The second property his angle.
∠PNK = ∠DGK = 90°
The third property would be side as well.
Side NK is similar to the side GK.
Thus, the two triangles are similar.
Similarity is the mathematical property of triangles, wherein two triangles are called similar if they have either two congruent angles and one similar side, or two similar sides in ratio with one another and a congruent angle.
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a map is drawn with a centimeter representing 25 miles. if the distance between two towns is 4 centimeters on the map, what is the actual distance between the two towns?
Answer:
1 cm - 25 miles
4 cm - 25 x 4 = 100 miles
The required distance is 100 miles.
Please help
The water is 7 meters deep 2 meters from the shore.
How deep is the water 45 meter from
the shore?
Answer: 157.5
Step-by-step explanation:
Charise can pick 1/3 pound of berries in 15 minutes.
How many pounds of berries can she pick in 4 hours at the same unit rate?
Answer:
Step-by-step explanation:
To convert minutes to hours, we divide by 60, since there are 60 minutes in an hour.
So 4 hours is equal to 4 * 60 = 240 minutes
Charise can pick 1/3 pound of berries in 15 minutes. This is her unit rate. To find out how many pounds of berries she can pick in 4 hours, we need to multiply this unit rate by the number of 15-minute intervals in 4 hours.
240 minutes / 15 minutes = 16 (four-hour intervals)
So the amount of berries Charise can pick in 4 hours is:
1/3 pound/15 minutes * 240 minutes = (1/3) * 16 = 16/3 = 5.333 pounds of berries.
Answer:
5 1/3 pounds of berries----------------------------------
Charise can pick 1/3 pound of berries in 15 minutes.
There are 4 of 15 minutes in an hour and we need to calculate it for 4 hours.
4*4 = 16 of 15 minutesShe picked:
1/3*16 = 16/3 = 5 1/3 pounds of berriesHELP I NEED HELP I NEED HELP I NEED HELP
Answer:
A is an Irregular Polygon
B is Neither a Polygon
C is an Irregular Polygon
D is a Regular Polygon
E is a Regular Polygon
Hi- can someone help me with 4 of these questions? I used a calucator to help but it didn't give me the right answer, (the questions are the pictures)
Answer: first one is D 15 1/2
second one is B 11 2/8
Third one is C (already had the correct answer)
fourth answer would be A 3 2/12
Step-by-step explanation:
hope this helps
