Answer:
53
Step-by-step explanation:
Answer:
Step-by-step explanation:
he had 39 sweets
then he receive 39*2[twice as much as 39] + 39 [the sweet he had before he got more sweet]
39*2=78+39=117-25[the number of sweet he had taken out of the 117 sweets he had before]
117-25=92
Billy has 92 sweets left
May 03, 2023
i) y = -1/2x² + 6x + 5
2
Step-by-step explanation:
To evaluate y when x = 2 in the equation y = -1/2x² + 6x + 5, we simply substitute x = 2 into the equation and solve for y:
y = -1/2(2)² + 6(2) + 5
y = -1/2(4) + 12 + 5
y = -2 + 12 + 5
y = 15
Therefore, when x = 2, y = 15 in the equation y = -1/2x² + 6x + 5.
Determine the input value for which the statement f(x) = g(x) is true. From the graph, the input value is approximately . f(x) = 3 and g(x) = x – 2 3 = x – 2 5 = x The x-value at which the two functions’ values are equal is . please
explanation
Note that the input value for which the statement f(x) = g(x) is true are
3.5 and 10/3
How is this so?In this question , we have a graph given, and we have to find the x coordinate of the intersection point .
From the graph , the input value is approximately 3.3 .
In the graph, f(x) = 3
And for g(x), we need the slope and y intercept .
Slope is the ratio of rise and run .
Here rise equals 3 units and run equals 2 units. And the graph touch the y axis at -2 .
So the equation of g(x) = (3/2)x - 2
Since we need to factor f(x) = g(x)
Substituting the values of the two functions, we will get
3 = (3/2)x - 2
Adding 2 to both sides
5 = (3/2)x
Cross multiply and you have
10 = 3x
x = 10/3
So the input value for which the statement f(x) = g(x) is true are
3.5 and 10/3
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Which could be Brooke’s sixth quiz score? Select three options. 85
90
83
86
92
The solution is: 90, 86, 92 and 89 could be Brooke’s sixth quiz score
Here, we have,
step 1
Find the mean
To do this, add all the numbers, then divide by the number of numbers there are.
so
mean = 85.60
step 2
if after taking the sixth quiz, Brooke’s mean score increased
then
the sixth score of Brooke's quiz must be higher than the mean obtained in the first 5 quizzes
case a)
85 < 85.60------> is not a solution
case b)
90 > 85.60------> is a solution
case c)
83< 85.60------> is not a solution
case d)
86 > 85.60------> is a solution
case e)
92 > 85.60------> is a solution
case f)
89 > 85.60------> is a solution
so, we get,
the answers are
90, 86, 92 and 89
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the complete question is
Brooke has scores of 84, 72, 90, 95, and 87 on her first five quizzes. After taking the sixth quiz, Brooke’s mean score increased.
Which could be Brooke’s sixth quiz score? Check all that apply.
85
90
83
86
92
89
what is the fomula of perimeter, area and volume
There are several formulas for finding the area, volume, and perimeter of different shapes. Some examples are: [tex]P = 2(l + w)[/tex], [tex]A = lw[/tex], and [tex]V = lwh[/tex]
What are the formulas to find the perimeter, area and volume of the different geometric figures?Perimeter:
Perimeter of a rectangle: [tex]P = 2(l + w)[/tex] where l is the length and w is the width.Perimeter of a square: [tex]P = 4s[/tex] where s is the length of a side.Perimeter of a circle: [tex]P = 2\pi r[/tex] where r is the radius.Area:
Area of a rectangle: [tex]A = lw[/tex] where l is the length and w is the width.Area of a square: [tex]A = s^2[/tex] where s is the length of a side.Area of a circle: [tex]A = \pi r^2[/tex] where r is the radius.Volume:
Volume of a rectangular prism: [tex]V = lwh[/tex] where l is the length, w is the width, and h is the height.Volume of a cube: [tex]V = s^3[/tex] where s is the length of a side.Volume of a cylinder: [tex]V = \pi r^2\pi[/tex] where r is the radius and h is the height.Note: This question is incomplete. Here is the complete question:
What is the formula of perimeter, area and volumen of rectangle, square, and circle
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in a survey, 13 people were asked how much they spent on their child's last birthday gift. the results were roughly bell-shaped with a mean and standard deviation of $36 and $15, respectively. construct a confidence interval at a 95% confidence level. give your answers to one decimal place. answer should be written in e format.
Answer:
Sure. Here are the steps on how to construct a confidence interval at a 95% confidence level for the mean amount spent on a child's last birthday gift:
Identify the sample size, n. In this case, n=13.
Identify the sample mean,
x
ˉ
. In this case, $\bar{x} = $36.
Identify the sample standard deviation, s. In this case, $s = $15.
Identify the t-critical value, t. The t-critical value is the value that cuts off 2.5% of the distribution in each tail, leaving 95% of the distribution in the middle. To find the t-critical value, we need to know the degrees of freedom, df. The degrees of freedom are calculated as df=n−1. In this case, df=13−1=12.
We can find the t-critical value using a t-distribution table. The t-distribution table shows the t-critical values for different degrees of freedom and different confidence levels. For a 95% confidence level and 12 degrees of freedom, the t-critical value is 2.179.
Calculate the confidence interval. The confidence interval is calculated as follows:
$\bar{x} \pm t \cdot \frac{s}{\sqrt{n}}$
In this case, the confidence interval is:
$36 \pm 2.179 \cdot \frac{15}{\sqrt{13}} = (27.28, 44.72)$
Therefore, a 95% confidence interval for the mean amount spent on a child's last birthday gift is $27.28 to $44.72.
Step-by-step explanation:
hey can someone help me pls *ANSWER ASAP*
This is a translation of 2 units to the left and 5 units up, so the correct option is the first one.,
Which is the translation applied?Remember that a vertical translation of N units is:
g(x) = f(x) + N
if N < 0 the translation is down.
if N > 0 the translation is up.
And a horizontal translation of N units is:
g(x) = f(x + N)
If N > 0 the translation is to the right.
if N < 0 the translation is to the left.
Here we have the transformation:
f(x) = x²
g(x) = (x + 2)² + 5
So this is a translation of 2 units to the left and 5 units up.
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write the expression as a single logarithm log{3} 40 -log{3} 10 show all steps very clearly please
Answer:
Use the quotient property of logarithms, logb(x)−logb(y)=logb(xy) log b ( x ) - log b ( y ) = log b ( x y ) . log3(4010) log 3 ( 40 10 ). Step 2.
Point O is between points M and N on line segment MN. O is the midpoint of line segment MN if
OOM=NM
O ON=NM
O ON OM
O ON+OM = MN
When point O is between points M and N on line segment MN. O is the midpoint of line segment MN if
O ON + OM = MN
What is midpoint of a line segment?In geometry the midpoint is the point that divides a line segment into two equal parts
It is the point that is equal distance from both endpoints of the segment.
In this case the endpoints are M and N, the midpoint is point O, which is the point that is halfway between M and N, so that ON = OM. and adding the points returns the original line MN
Therefore, we have that ON + OM = MN
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Unlike the traditional IQ test, a group of researchers have designed new IQ questions
testing for the 9 different types of intelligence. The distribution of IQ scores using the new test for high
school students is normally distributed with a mean of 80 points and a standard deviation of 12 points.
Use technology to find the following. (Note: for full credit, write correct probability notation)
(a) Find the probability to 3 decimal places that a high school student chosen at random has an IQ
score between 60 to 75 points, inclusive.
(b) A student will need special attention if the student’s IQ score is below 55 (at most 54) or above
100 (at least 101). What proportion of the high school students will need special attention?
Hint: Look carefully at the bolded phrases.
(c) Mensa International is the largest and oldest high IQ society in the world. Members of this
society are individuals who score at the 98th percentile or higher on this new IQ test. Determine the
cutoff IQ score (it must be a whole number) to be a member of Mensa International.
(a) The probability of a random high school student having an IQ score between 60 and 75 points is approximately 0.186. (b) About 6.5% of high school students will require special attention based on IQ scores below 55 or above 100 points. (c) The cutoff IQ score to be a member of Mensa International is approximately 105.
To solve these problems, we will use the standard normal distribution, also known as the Z-distribution. We'll need to calculate z-scores and use the z-table or technology to find probabilities.
(a) To find the probability that a high school student chosen at random has an IQ score between 60 and 75 points, inclusive, we need to calculate the area under the normal curve between these two values.
First, we convert the IQ scores to z-scores using the formula:
z = (x - μ) / σ
where x is the value we want to convert, μ is the mean, and σ is the standard deviation.
For 60 points:
z1 = (60 - 80) / 12 = -1.6667
For 75 points:
z2 = (75 - 80) / 12 = -0.4167
Next, we use technology or a z-table to find the probabilities associated with these z-scores:
P(-1.6667 ≤ Z ≤ -0.4167)
Using technology or a z-table, the probability comes out to be approximately 0.186.
Therefore, the probability that a high school student chosen at random has an IQ score between 60 and 75 points, inclusive, is 0.186.
(b) To find the proportion of high school students who will need special attention, we need to calculate the area under the normal curve below 55 points (z ≤ (55 - 80) / 12) and above 100 points (z ≥ (100 - 80) / 12).
P(Z ≤ -2.0833) + P(Z ≥ 1.6667)
Using technology or a z-table, we find the probabilities:
P(Z ≤ -2.0833) ≈ 0.018
P(Z ≥ 1.6667) ≈ 0.047
Adding these probabilities, the proportion of high school students who will need special attention is approximately 0.018 + 0.047 = 0.065.
Therefore, about 6.5% of high school students will need special attention.
(c) To determine the cutoff IQ score to be a member of Mensa International, we need to find the value corresponding to the 98th percentile of the standard normal distribution.
We want to find the IQ score x such that P(Z ≤ z) = 0.98.
Using technology or a z-table, we find the z-score corresponding to a cumulative probability of 0.98 is approximately 2.055.
Now, we solve for x in the z-score formula:
2.055 = (x - 80) / 12
Simplifying and solving for x:
24.66 = x - 80
x = 24.66 + 80
x ≈ 104.66
Therefore, the cutoff IQ score to be a member of Mensa International would be 105 (rounded to the nearest whole number).
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Which numbers in set ={1 2 3 4 5 6 7 8 9 10} are elements in both the subset of odd numbers and the subset of multiples of 3?
The numbers that are elements of both the subset of odd numbers and the subset of multiples of 3 are 3 and 9.
The odd numbers in the set are {1, 3, 5, 7, 9} and the multiples of 3 in the set are {3, 6, 9}.
The elements that are in both subsets are the ones that appear in both sets, which are only 3 and 9.
Therefore, the numbers 3 and 9 are the elements that are in both the subset of odd numbers and the subset of multiples of 3.
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How to Draw a table of values for the first 6 natural numbers.
To draw a table of values for the first 6 natural numbers, draw the rows and columns and input the numbers 1, 2, 3, 4, 5, and 6 against the variables being compared.
How to draw the tableA table is a visual representation that is used to compare two or more variables. To draw this sort of table for natural numbers, you need to insert 6 rows to contain all of the numbers.
The number of columns that will e drawn depends on the variable or variables that you are checking. The first 6 natural numbers are numbers 1 to 6.
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How do you do this question? Please help right now.
Answer:
The surface area of the right triangular prism is 168 cm².
Step-by-step explanation:
The formula for the surface area of a right triangular prism is SA=bh+pl, where p=b+h+c
P=b+h+c
P=4+3+5
=12
SA=bh+pl
SA=(4)(3)+(12)(13)
SA= 12+156
SA=168 cm²
For more information on how to find the surface are of right triangular prisms, check out "Triangular Prism - Volume, Surface Area, Base and Lateral Area Formula, Basic Geometry" by the Organic Chemistry Tutor.
Hope this helps!
Ivan is an artist. He creates 1 sculpture for every 6 paintings. If he has created 54 paintings, how many sculptures has he created?
A.)324
B.)9
C.)252
D.)42
Ivan has created 9 sculptures.
We know, ratio is a comparison between two quantities or numbers. It expresses how many times one quantity is contained in another or how the two quantities relate to each other.
To find the number of sculptures he has created, we need to divide the number of paintings by the ratio of paintings to sculptures.
Number of paintings: 54
Ratio of paintings to sculptures: 6 paintings : 1 sculpture
Number of sculptures
= Number of paintings / Ratio of paintings to sculptures
= 54 / (6/1)
= 54 / 6
= 9
Therefore, Ivan has created 9 sculptures.
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What is the angle of the 3rd order bright fringe produced by two slits that are 5.82x10-5m apart if the wavelength of the incident light is 5.04x10-7m?
A. 0.0867o
B. 4.97o
C. 0.260o
D. 15.1o
We can use the equation for the angle of the bright fringes in a double-slit experiment. The answer is D. 15.1o.
where θ is the angle of the bright fringe, m is the order of the fringe (in this case, m=3), λ is the wavelength of the incident light, and d is the distance between the slits.
Plugging in the given values, we get:
sinθ = (3)(5.04x10^-7m)/(5.82x10^-5m) = 0.260
Taking the inverse sine of both sides, we get:
θ = sin^-1(0.260) = 15.1o
Therefore, the answer is D. 15.1o.
To find the angle of the 3rd order bright fringe, we can use the formula for the double-slit interference pattern:
mλ = d * sinθ
where m is the order number (3 in this case), λ is the wavelength of the incident light (5.04x10^-7 m), d is the distance between the slits (5.82x10^-5 m), and θ is the angle we want to find.
First, rearrange the formula to solve for the angle:
sinθ = (mλ) / d
Now, plug in the given values:
sinθ = (3 * 5.04x10^-7 m) / 5.82x10^-5 m
Calculate the result:
sinθ = 0.02594
Now, find the inverse sine (arcsin) of the result to get the angle:
θ = arcsin(0.02594) ≈ 1.49°
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On the basis of a survey of 1000 families with six ​children, the probability of a family having six girls is 0.0054.
A.Empirical method
B.Classical method
C.Subjective method
D.It is impossible to determine which method is used.
The method used to determine the probability of a family having six girls, based on a survey of 1000 families with six children, is the classical method.
The classical method involves calculating probabilities based on the assumption of equally likely outcomes and known sample spaces. In this case, the sample space consists of all possible combinations of genders for six children, and the probability of a family having six girls is calculated as the ratio of the favorable outcome (one specific combination) to the total number of outcomes (all possible combinations).
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378=63t please i need help??
Answer: 6
Step-by-step explanation:
If you divide both sides by 63 it isolates the t and leaves you with 6=t.
50 POINTSS! I NEED HELPP if the coach bases her decisions on the player Who is most consistent, whom should she choose? Justify your answer using measures of variability
If the coach was to pick the player based on the best average, the coach would choose Jessie.
If the coach is picking based on who has been the most consistent, they would pick Sam.
How the coach would decide ?The average for Jessie is :
= ( 150 + 145 + 181 + 235 + 196 + 211 + 204 + 221 + 185 ) / 9
= 192 points
The average for Sam :
= ( 186 + 187 + 192 + 195 + 194 + 157 + 157 + 162 + 200 ) / 9
= 181 points
The coach would pick Jessie based on average.
For consistency, we can use the measure of variability of range. The range for Jessie is:
= 235 - 145
= 90 points
The range for Sam would be:
= 200 - 157
= 43 points
This shows that Sam is more consistent and so would be picked based on consistency.
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how many different triangles with sides measuring 3,4, and 5 exist?
There is only one triangle with sides measuring 3, 4, and 5.
How to know how many triangles that can be formedWhen no side is specified, an infinite number of triangles are created.
If side lengths are not given, the three angles will result in an infinite number of triangles that are unique.
In this case the three sides of the triangle are specified and condition like this leads to formation of one unique triangle which a right triangle
This is a well known right triangle, the sides given is also known as a Pythagorean triple.
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answer the questions please
The probability that the number is in set B is 20 %.
The probability that the number is in the set A ∪ B is 30 %.
What is the probability of the number chosen?If a number is chosen at random from the universal set, the probability that the number is in set B is calculated as follows;
The total number of outcome = {1, 2, 3, 4, 5, 6, 7, 8, 9 , 10} = 10 numbers
The numbers in set B = { 3, 7}
The probability = 2/10 = 1/5 = 20%
The probability that the number is in the set A ∪ B is calculated as follows;
A ∪ B = { 2, 3, 7 }
The probability = 3/10 = 30%
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The rectangular floor of a classroom is 28 feet in length and 24 feet in width. A scale drawing of the floor has a length of 7 inches. What is the perimeter, in inches, of thefloor in the scale drawing?
Answer:
To find the perimeter of a scale drawing, we need to use the same scale factor that was used to create the drawing. In this case, the scale factor is 7 inches: 28 feet, or 1 inch: 4 feet. This means that every inch in the drawing represents 4 feet in the actual floor.
To find the perimeter of the floor in the scale drawing, we need to add up the lengths of all the sides. Since the floor is rectangular, it has two pairs of equal sides. The length of the floor is 28 feet, so the length of the scale drawing is 28 / 4 = 7 inches. The width of the floor is 24 feet, so the width of the scale drawing is 24 / 4 = 6 inches.
The perimeter of the scale drawing is then:
7 + 6 + 7 + 6 = 26 inches
MARK AS BRAINLIEST!!! THIS TOOK A LOT OF TIME!!!
20 points for answering this
Answer: 90
Step-by-step explanation:
58 = 7x - 5
What is X?
Answer:
9
Step-by-step explanation:
Answer:
x = 9
Step-by-step explanation:
58 = 7x -5
Add + 5 to both sides
58+5 = 7x - 5 + 5
63 = 7x + 0
63 = 7x
Divide both sides by 7 to isolate the variable x.
63/7 = 7x/7
9 = x
So x = 9.
Check your answer:
7(9) - 5 = 63-5 = 58 so it works!
c(n,r) is the number of subsets of r elements each that can be formed from a set of n elements. true or false
True.
The expression c(n,r), also known as "n choose r" or the binomial coefficient, represents the number of ways that r elements can be selected from a set of n elements without regard to order. It is commonly used in combinatorics, probability, and statistics. The formula for c(n,r) is c(n,r) = n!/r!(n-r)!, which can be calculated using factorials.
For example, c(5,2) = 10, which represents the number of ways to choose 2 elements from a set of 5 elements (i.e., {1,2}, {1,3}, {1,4}, {1,5}, {2,3}, {2,4}, {2,5}, {3,4}, {3,5}, {4,5}).
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Find the value of x. Assume that lines that
appear tangent are tangent.
X
10 15
24
The value of x in the chord intersection is 16 units.
How to find the length of chord?The intersecting chord theorem states that the products of the lengths of the line segments on each chord are equal. In other words, If two chords intersect in a circle , then the products of the measures of the segments of the chords are equal.
Therefore, lets find the value of x in the intersecting chords as follows:
15 × x = 24 × 10
15x = 240
divide both sides of the equation by 15
x = 240 / 15
x = 16
Therefore,
x = 16 units
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Help please DUE TONIGHT ! You have been contracted to paint the grain silo pictured below find the combined surface area of the top and sides of the sail to determine the amount of paint needed for the job note there is no need to paint the bottom of the silo as it is resting on the ground the height of the right cylinder is twice it’s diameter round ur answer to the nearest whole number
90π m² is the combined surface area of the top and sides of the sail to determine the amount of paint needed for the job note there is no need to paint the bottom of the silo
We know that t = 12m
t= 2×diameter
12=2×diameter
6=diameter
Radius = 3m
Combined surface area = 2πrt+1/2×4πr²
=2π(3)(12)+1/2×4π(9)
=72π+18π
=90π m²
Hence, 90π m² is the combined surface area of the top and sides of the sail to determine the amount of paint needed for the job note there is no need to paint the bottom of the silo
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Draw a function that has the following asymptotic behaviors.
A. At x=-3
as x→ - 3, y→∞ and as x→ - 3*, y→∞
The exponential function has a horizontal asymptote at y = –3 will be; f (x) = –3^x – 3.
We get a horizontal asymptote for a function;
Note that the x-axis (y=0) is the horizontal asymptote.
Since the question asked for a function with asymptotic behaviors of y = -3,
we can shift the function 3 units above by changing Q to +3.
The exponential function has a horizontal asymptote at y = –3 will be;
f (x) = –3^x – 3.
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As the project progresses, the actual finish times (AFs) of completed activities will determine
the earliest start and earliest finish times for the remaining activities in the network diagram, as well as the total slack.
As the project progresses, the actual finish times (AFs) of completed activities play a crucial role in determining various aspects of the project schedule.
The AFs are used to calculate the earliest start and earliest finish times for the remaining activities in the network diagram. These calculations are based on the dependencies between activities and the actual durations of completed activities.
By considering the AFs, the project team can determine the earliest possible start and finish times for the remaining activities, taking into account the sequence of activities and any imposed constraints. This information helps in managing the project schedule and identifying any potential delays or critical paths.
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Solve the following pairs of simultaneous equations
(a) x+y=5,xy=x+3
(b) 2x+y=5, x² + y² =10
The pairs of simultaneous equations have their x and y values to be (a) x+y=5 and xy=x+3: (1, 4) and (2, 3) & (b) 2x+y=5 and x² + y² =10: (x, y) = (1, 3) and (3, -1)
Solving the pairs of simultaneous equationsFrom the question, we have the following parameters that can be used in our computation:
(a) x+y=5 and xy=x+3(b) 2x+y=5 and x² + y² =10The pairs of simultaneous equations can be solved using a graphical method
Using the above as a guide, we have the following:
(a) x+y=5 and xy=x+3
x and y values:
(x, y) = (1, 4) and (2, 3)
(b) 2x+y=5 and x² + y² =10
x and y values:
(x, y) = (1, 3) and (3, -1)
See attachment for graphs
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Gaurav bought 500 mangoes for Rs. 1000. He then packed them into small boxes with 25 in each. If each box is sold for Rs. 60, how much profit is made
Gaurav bought 500 mangoes for Rs. 1000, which means that he bought each mango for Rs. 2.
He packed the mangoes into small boxes with 25 in each, so he made a total of 500/25 = 20 boxes.
He sells each box for Rs. 60, so he makes a total of 20 x Rs. 60 = Rs. 1200 from selling all the boxes.
To find the profit, we need to subtract the cost of the mangoes from the total revenue.
The cost of 500 mangoes was Rs. 1000, so the profit is:
Profit = Rs. 1200 - Rs. 1000 = Rs. 200
Therefore, Gaurav made a profit of Rs. 200 by selling the mangoes.
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Help Will give BRAINLYST How many years will it take mr sanchez to have 10,568.52 in the college fund ,if mr sanchez does not make any deposits or withdrawals
Answer:
16 years
Step-by-step explanation:
We can use the formula for compound interest to solve this problem:
A = P(1 + r/n)^(nt)
where A is the final amount, P is the principal (initial amount), r is the annual interest rate (as a decimal), n is the number of times per year the interest is compounded, and t is the number of years.
In this case, P = $5000, r = 0.05 (since the annual interest rate is 5%), n = 12 (since the interest is compounded monthly), and we need to solve for t when A = $6,568.52.
Plugging in the values, we get:
$6,568.52 = $5000(1 + 0.05/12)^(12t)
Dividing both sides by $5000 and taking the natural logarithm of both sides, we get:
ln(1.313704) = ln(1 + 0.05/12)^(12t)
Using the logarithmic identity ln(a^b) = b ln(a), we can simplify the right side:
ln(1.313704) = 12t ln(1 + 0.05/12)
Dividing both sides by 12 ln(1 + 0.05/12), we get:
t = ln(1.313704) / (12 ln(1 + 0.05/12)) = 16.0
Therefore, it will take Mr. Sanchez 16 years to have $6,568.52 in the college fund, if he does not make any deposits or withdrawals. The answer is 16 years.
