i hatte math so much
me too but i think the answer would be F.
solve h(x) = 5 - 9x Find h(8)
h(x) = 5 - 9x
h(8) = 5 - 9×8 ( putting value x = 8)
h(8) = 5 - 72
h(8) = -67
Answer is -67.
Answer:
h(8) = -67
Step-by-step explanation:
To solve this problem, we take x in h(x) and input it for x within the problem.
In this case, h(8), so 8 is replacing x in 5-9x.
h(8) = 5 - 9(8)
h(8) = 5 - 72
h(8) = -67
Hope this helped!!
Write the equation in point-slope form of the line that passes through the given point and has the given slope: (-2, -1); m=-3
Answer:
y+1=-3(x+2)
Step-by-step explanation:
point-slope form is the formula y-y1=m(x-x1), where (x1, y1) is a point and m is the slope
we are given a point (-2, -1) and a slope of -3
all we really need to do is substitute the given into the formula
remember: since the formula gives subtraction, we're going to be subtracting, even though we have negative numbers
substitute -2 as x, -1 as y and -3 as m
y--1=-3(x--2)
we can simplify this equation:
y+1=-3(x+2)
Hope this helps!
Can someone please help me with this question for hw
HELPPPPPP. In a class activity, students collected data on the average number of pepperoni slices on various sizes of pizzas. A "New York" style pizza has a diameter of 18 inches. Use the least-squares regression line to predict the average number of pepperoni slices that the students could expect to on a "New York" style pizza. Pepperoni = - 0.156 Diameter
a.) 49 pepperoni slices
b.) 7 pepperoni slices
c.) 60 pepperoni slices
d.) 2 pepperoni slices
Answer:
49 slices
Step-by-step explanation:
.
Answer:
A) 49 slices
Step-by-step explanation:
What are all expressions that are equivalent to 6(2–4n)
Answer:
I found 1 and its 18(6-12n)
Is this by chance a multiple choice question?
Step-by-step explanation:
WILL GIVE BRAINLIEST
1. A department store kept records of how many fans were sold each day and the high temperature for that day. The results are shown in the scatterplot. Answer the questions about the scatterplot.
a. What is the explanatory variable (independent variable)? (1 point)
b. What is the response variable (dependent variable)? (1 point)
c. Circle the best range for the correlation coefficient. (1 point)
(–1 to –0.7) (–0.7 to –0.3) (–0.3 to 0) (0 to 0.3) (0.3 to 0.7) (0.7 to 1.0)
d. Based on this scatterplot, does a rise in temperature cause more fans to be sold? Why or why not? (3 points)
2. This scatterplot shows the relationship between a player's level in a game and the point total in the level. Answer the questions about the scatterplot.
a. The best model for these data would be (linear / exponential / quadratic). (Circle the correct answer.) (1 point)
b. This table shows the values from the scatterplot. Find the regression equation for the model that you chose in Part a. Round your answer to the nearest hundredth. (3 points)
x
Level
y
Point total
1
124
2
156
3
194
4
240
5
305
6
380
7
477
8
596
9
745
c. Using the equation that you found in Part b, predict the point total in the 10th level. Round your answer to the nearest integer. (2 points)
3. Maria is a veterinarian. She wants to know how the weight of a puppy is related to its length. To find out, Maria randomly selected 10 puppies that are two months old. She recorded the length and weight of each puppy in the table below.
Part A. The data from the table are shown on the scatterplot. Draw an estimated line of best fit through the data points. (3 points)
Part B. Use the scatterplot to answer these questions.
a. What kind of correlation exists between the length and weight of the puppies? Explain. (2 points)
b. Identify two points on the line of best fit that you drew in Part A. Use the two points to find the equation of the line. Write the equation of the best fit line in slope-intercept form. Show your work. (4 points: 1 point for identifying the coordinates of two points, 1 point for slope, 1 point for b-value, and 1 point for showing work)
4. Maria also wants to study the relationship between the weight of puppies at birth and their adult weight (at two years old). She collected data from five randomly selected small-breed dogs and displayed the data in the table.
Birth weight
(pounds)
Adult weight
(pounds)
1.5
10
3
17
1
8
2.5
14
0.75
5
Part A. Use the data in the table to create a scatterplot. (5 points)
Part B. Look at the scatterplot that you drew in Part A. Which regression equation (linear, exponential, or quadratic) do you think would be the best model for these data? To help you decide, think about the adult weight you would expect if the birth weight were larger — say, 10 pounds. Would you expect the pattern in the scatterplot to continue? To grow exponentially? To change direction? Explain your answer. (2 points)
Part C. Perform a linear regression and interpret the results.
a. Use a calculator to perform a linear regression. Round the values your calculator gives you for a and b to the nearest hundredth. (2 points)
y = _______x + _______
b. What is the slope of the regression equation? What does this mean in terms of the birth weight and adult weight? (2 points)
c. What is the value of the correlation coefficient? (1 point)
d. Describe the correlation in terms of strength (weak or strong) and direction (positive or negative). (2 points)
Part D. Analyze the residuals.
Birth weight
(pounds)
Adult weight
(pounds)
Predicted
adult weight
Residual
1.5
10
3
17
1
8
2.5
14
0.75
5
a. Use the linear regression equation from Part C to calculate the predicted adult weight for each birth weight. Round to the nearest hundredth. Enter these in the third column of the table. (2.5 points)
b. Find the residual for each birth weight. Round to the nearest hundredth. Enter these in the fourth column of the table. (2.5 points)
c. Plot the residuals. (3 points)
d. Based on the residuals, is your regression line a reasonable model for the data? Why or why not? (2 points)
5. Decide whether each statement is true or false. (1 point each)
a. T/F: If there is a strong correlation between two variables, the correlation coefficient will be close to –1 or 1.
b. T/F: If there is a negative correlation between two variables, the slope of the regression line will be positive.
c. T/F: If there is a strong correlation between two variables, there is a cause-and-effect relationship.
d. T/F: The best model for data that change direction is a linear model.
e. T/F: A regression line is useful for predicting unknown values within the range of the observed data values.
Answer:
Step-by-step explanation:
Answer to #5: is T, F, F, F, T I'm pretty sure that's correct.
64^2/3
does anybody know how to do this?
Step-by-step explanation:
64^2/3
=(2^6)^2/3
=(2)^6×2/3
=(2)^2×2
=2^4
=16
All dimensions of a cylinder are multiplied by 1.5. Which statement is true?
A. The total surface area is multiplied by 3.375.
The volume is multiplied by 2.25.
B. The total surface area is multiplied by 2.25.
The volume is multiplied by 3.375.
C. The total surface area is multiplied by 3.
The volume is multiplied by 4.5.
D. The total surface area is multiplied by 4.5.
The volume is multiplied by 3.
Answer:
The true statement is;
B. The total surface area is multiplied by 2.25
The volume is multiplied by 3.375
Step-by-step explanation:
By scale drawing proportionality, we have;
The amount by which all the dimensions of the cylinder are multiplied to create an image of the cylinder = 1.5
∴ The scale factor between the original cylinder and the image of the cylinder, S.F. = 1.5
By rule, we have;
The area factor of the surface area = S.F.² = 1.5² = 2.25
Therefore;
The total surface area of the original cylinder is multiplied by 2.25 to get the total surface area of the image of the cylinder
By rule, we have;
The volume factor = S.F.³ = 1.5³ = 3.375
Therefore;
The volume of the original cylinder is multiplied by 3.375 to find the volume of the image of the cylinder.
Answer:
B
Step-by-step explanation:
Find the volume of this cone.
Use 3 for TT.
3
6cm
V ~ [?]cm3
V
5cm
Enter your answer in decimal form.
HELP ME
Step-by-step explanation:
[tex]volume = \frac{1}{3} \pi {r}^{2} h \\ = \frac{1}{3} \times 3 \times {2.5}^{2} \times 6 \\ = 37.5 \: {cm}^{3} [/tex]
Answer:
37.5
Step-by-step explanation:
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here this is the answer..
A box contains 7 red marbles, 4 white marbles, and 5 blue marbles. If only white marbles are added to the box, how many must be added to
make the probability of drawing a white marble ş?
A: 1
B: 2
C: 5
D. 7
E: 12
Learning Task Find the perimeter and area of each figure
Perimeter
Area
om
som
So
Answer:
Step-by-step explanation:
1. Perimeter: 8cm + 8cm + 3cm + 3cm = 22cm
Area: 8cm x 3cm = 24cm
2. Perimeter: 5m + 5m + 5m + 5m = 20m
Area: 5m x 5m = 25m
3. Perimeter: 4m + 4m + 18m + 18m = 44m
Area: 4m x 18m = 72m
Would you rather lose the ability to cry or cry every day for 20 minutes randomly?
Answer:
Lose the ability to cry because i dont cry that much
Step-by-step explanation:
Answer:
loose the ability to cry l m a o
Step-by-step explanation:
Which numbers are factors of both 12 and 42?
Answer:
12
Step-by-step explanation:
HELPPPPPPP PLZZZZZZZZ
Answer:
azesrdftgyuh
Step-by-step explanation:
dxcfvghbj
Which point on the number line could represent 85%?
Answer:
8/5 and -8/5
Step-by-step explanation:
A semi-trailer in the shape of a rectangular prism, has inside measurements of 53 feet, 8 feet, and 8.5 feet. What is the volume of the trailer?
Answer:
4.5
Step-by-step explanation:
Math problem help plz
(don't send links will report u)
ASAp
When n=343 college students are randomly selected and surveyed, it is found that x=110 own a car. Find a 99% confidence interval (CI) and margin of error (ME) for the true proportion of all college students who own a car.
Answer:
The margin of error will be "0.65". A further explanation is provided below.
Step-by-step explanation:
The given values are:
n = 343
x = 110
At 99% confidence level,
[tex]\alpha = 1-99[/tex]%
[tex]=1-0.99[/tex]
[tex]=0.01[/tex]
then,
[tex]\frac{\alpha}{2} =\frac{0.01}{2}[/tex]
[tex]=0.005[/tex]
or,
[tex]Z_{\frac{\alpha}{2} }=Z_{0.005}[/tex]
[tex]=2.576[/tex]
Now,
The point estimate will be:
⇒ [tex]\hat{P}=\frac{x}{n}[/tex]
⇒ [tex]=\frac{110}{343}[/tex]
⇒ [tex]=0.321[/tex]
or,
⇒ [tex]1-\hat{P}=1-0.321[/tex]
⇒ [tex]=0.679[/tex]
The margin of error will be:
⇒ [tex]E=Z_{\frac{\alpha}{2} }\times \sqrt (\frac{(\hat{P}\times (1 - \hat{P})) }{n} )[/tex]
On substituting the above values, we get
⇒ [tex]=2.576\times \sqrt{\frac{0.321\times 0.679}{343} }[/tex]
⇒ [tex]=2.576\times \sqrt{\frac{0.217959}{343} }[/tex]
⇒ [tex]=0.065[/tex]
hence,
⇒ [tex]\hat{P}-E<p<\hat{P}+E[/tex]
⇒ [tex]0.321-0.065<p<0.321+0.065[/tex]
⇒ [tex]0.256,0.386[/tex]
URGENT!!
Solve for X
Answer:
[tex]\frac{X}{100} =\frac{600}{800} \\\\X = \frac{6}{8} \times 100 = 75[/tex]
Daniel has 6 erasers. he give one to p.j. and. he gives one to ken. he keeps. the rest. what friction of his erasers did he give away.
Answer:1/3
Step-by-step explanation:
He gave away 2/6 of the erasers. You can simplify that by doing 2 divided by 2 6 divided by 2 which makes it 1/3. Daniel gave away 1/3 of the erasers.
Answer:
1/3
Step-by-step explanation:
he gave one to p.j=1/6
he gave one to Ken=1/6
1/6 +1/6=2/6=1/3
PLS HELP MEEEE I WILL GJVE BRAIN THINGY!!!!!
Answer:
last one
Step-by-step explanation:
Answer:
D. -5-3
Step-by-step explanation:
State if the triangle is acute, obtuse, or right.
7 cm
12 cm
13 cm
B) Obtuse
A) Acute
C) Right
Answer:
It's an acute triangle
Step-by-step explanation:
An arborist examined trees in an orchard to see if they were infected with a virus. The arborist counted 7 infected trees and 43 healthy trees. What percentage of the trees in the orchard were infected?
Answer: Percentage of infected trees =2%
Step-by-step explanation:
Number of Infected trees =7
Number of healthy trees=43
Total number of trees in the orchard=43+7=50
Percentage of infected trees =Number of Infected trees/Total number of tress in the orchard x 100
7/50 x 100 =2%
PLEASE NO LINKS Thanks :))
Answer:
C: 22 points.
Step-by-step explanation:
6th grade math that I forgot please help
probability of rolling a factor of 45
Answer:
Step-by-step explanation:
POOP THEN PEEEEEE
Can someone plz help me plz I beg u :/
Answer:
i think the answer is b
Step-by-step explanation:
the others just dont feel right
Ravi and Hasan bought 13⁄4 of pies , Ravi ate 1/3 and Hasan ate 2/3 of it
. How much pie is left?
Answer:
The final answer is 0
Step-by-step explanation:
1/3 + 2/3 = 1 which means Ravi and Hasan ate the whole thing
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
PLEASE HELPP IM VERy CONFUSED IM MAKING IT WORTH 45 PLEASE HELP!!!!! WILL MARK BRAINLIEST
The height, h, in feet above the ground of a person riding a Ferris wheel can be modeled with the equation
h(t)=-45cos (pi/4 t) +52, where t is the number of minutes since boarding the ride.
(a) At what height does the person board the wheel? Explain how you arrived at your answer.
(b) How many minutes does one complete rotation of the wheel take?
Answer:
34 i hope this is right good luck to you