2. The equation y = 8x gives the points, y, earned by reading books.
Use this equation to find the number of books Stephanie read to earn 72 points. Show your work.
(Hint: Which variable can you substitute 72 for in y= 8x?)
Write your answer in the space below.

Answers

Answer 1
y = points

so substitute 72 for y

72 = 8x

divide by 8

9 = x

stephanie reads nine books to reach 72 points
Answer 2
She has to read 9 books.

Related Questions

PLEASE HELP ME !!!!!!!!!!!!!!!!!!!!

Answers

Answer:4104

Step-by-step explanation:I think

Which of the points is on a line with positive slope?

A
(-6, 1) and (-6, 9)

B
(2, 6) and (11, -3)

C
5, 0) and (8, 4)

D
(3, 4) and (-2, 12)

Answers

(5,0) and (8,4)

it’s the only one when graphed that the line (from left to right) goes up,

Twice the difference between a number, x, and eighteen is three times the number.

Answers

Answer:

2(x-18)=3x

Step-by-step explanation:

hope this helps

Find the percent change to the nearest whole percent. from 45 feet to 95 feet.

Answers

Answer:

211%

Step-by-step explanation:

To calculate the percentage change between these two numbers we need to divide the end result from the initial starting point. Once we do this we need to multiply the product by 100 to get the percentage value.

95 / 45 = 2.11111

2.11111 * 100 = 211.11%

Finally, we can see that the percentage change from 45 ft. to 95 ft. is 211.11%. If we round this to the nearest whole percent it would be a change of 211%

Which equation represents a line having a slop of 5/2 and a y intercept of (0,-4)?

Answers

Answer:

A

Step-by-step explanation:

At a banquet 216 guests sit at 18 tables. Each table has the same number of guests. How many guests per table?
A. 8 guests per table
B. 12 guests per table
C. 18 guests per table

Answers

B. 12 guest per table all you need to do it’s divide 216 and 18

graphing an inequality gives you a visual model of a Solution true or false​

Answers

Answer:

true ofc

Step-by-step explanation:

Is x = 6 a solution to the equation x + 13 = 18?

Answers

Answer:

No, the answer is 5

Answer: No the solution is 5

Step-by-step explanation:

When you substitute x with 6 you get 6+13= 18.

Obviously 6+13 is not 18 so this means that 6 is not a solution.

Hope this helps ;)

YOU HAVE SAVED $5000 AND INVESTED IT AT A RATE 3.2% FOR 5 YEARS. WRITE AN EXPONENTIAL FUNCTION TO REPRESENT THIS SITUATION. HOW MUCH WILL VOU KAVE AFTER YEARS? HOW MUCH WILL A BILLIONAIRE HAVE IF HE INVESTS $1,000,000,000 AT THE SAME RATE FOR THE SAME AMOUNT OF TIME?

Answers

Answer:

5852.86 = 5000 (1+ .032)^5

1170572956 = 1,000,000,000(1+ .032)^5

Step-by-step explanation:

In what place will the first digit of the quotient 5.64 divided by 15

Answers

kigegvdvdjsjshdbdhdhhdh

While Tina is shopping, she finds a pair of pants she wants to buy that is priced at $35 but is on sale for 60% off. What expression would you
use to find the total Tina will pay for the pair of pants?

Answers

Answer:

35x.40=14

Step-by-step explanation:

you multply $35 by .40 because that is the remaining cost from 60%

A launch vehicle is designed to carry up to 35 tons of payload into orbit.
When fully fueled, it will contain 1,216,000 kg of liquid oxygen at a density
of 1,155 kg/m3. What is the total volume of liquefied gasses carried by the
launch vehicle, to the nearest tenth? *
0.0 m
1,052.8 m
102,340.4 m
140,448,000 m

Answers

Answer:

1,052.8 m

Step-by-step explanation:

You use the equation D=m/v. You know D 1155 and you know m 1,216,000. So you just solve for volume.

75%, 9/10, 0.09 least to greatest

Answers

0.09 < 75%< 9/10
This is the order from smallest to largest
0.09, 75%, 0.09


I hope this helps :)

(a) Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Enter a number. Round your answer to four decimal places.)

Answers

[tex]Here \ is \ the \ missing \ part.[/tex]

[tex]In \ a \ marketing \ survey, \ a \ random \ sample \ of \ 992 \ supermarket \ \ shoppers \ \ revealed[/tex]

[tex]that \ 274 \ always \ stoc k \ up \ on \ a n \ item \ when \ they \ find \ that \ item \ at \ a \ real \ bargain \ price.[/tex]

Answer:

0.2762

Step-by-step explanation:

The point estimate is the best guess of the true parameter. It is an estimate of a population parameter and it is a single value of statistics.

The sample proportion [tex]\hat p[/tex] is the point estimate of the population proportion p

Given that

The sample mean = 274; &

The sample size = 992

Then,

The point estimate [tex]p = \dfrac{x}{n}[/tex]

[tex]p = \dfrac{274}{992}[/tex]

p = 0.2762

convert 2/3 to it's decimal form and round to the nearest thounsandth

Answers

Answer:

0.67

Step-by-step explanation:

2/3=0.666 repeating which rounds up to 0.67

Answer:

0.67

Step-by-step explanation:

Which of the following expressions is equivalent to 3 + 3 • 12 ÷ 4 • 3?

1. 3 + 36 ÷ 4 • 3
2. 6 • 12 ÷ 4 • 3
3. 3 + 3 • 12 ÷ 12
4. 3 + 3 • 3 • 3

Answers

Answer:

The first one is the correct answer because it has the same value when you solve them.

Answer:

A) 3 + 36 ÷ 4 • 3

Step-by-step explanation:

(-1/2)•(-1/2)•(-1/2)

Answers

Answer:

[tex]-\frac{1}{8\\}[/tex]

Step-by-step explanation:

Break the equation into 2 pieces:

(-1/2)•(-1/2) = 1/4

1/4 •  (-1/2) = -1/8

Answer:

-0.125

Step-by-step explanation:

HELP!!!!!!!
A falling object travels a distance given by the formula d=3t+5t2, where d is measured in feet and t is measured in seconds. How many seconds will it take for the object to travel 84 feet?

Answers

Answer:

Approximately 3.81 seconds

Step-by-step explanation:

d = 3t + 5t²

d = 84

84 = 3t + 5t²

3t + 5t² - 84 = 0

5t² + 3t - 84 = 0

5(t² + 3/5t - 84/5) = 0

5(((t + 3/10)² - 9/100) - 84/5) = 0

5((t + 3/10)² - 9/100 - 84/5) = 0

5((t + 3/10)² - 9/100 - 1680/100) = 0

5((t + 3/10)² - 1689/100) = 0

5(t + 3/10)² - 1689/20 = 0

5(t + 3/10)² = 1689/20

(t + 3/10)² = 1689/100

t + 3/10 = ±√(1689)/10

t = -3/10 ± √(1689)/10

t = -3/10 ± ≈41.1/10

t = -3/10 ± ≈4.11

t ≈ -0.3 ± 4.11

t [can only be positive] ≈ 4.11 - 0.3

t ≈ 3.81

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC = 10
and DC= 7, what is the length of BC in simplest radical form? (Note: the figure is
not drawn to scale.)

Answers

Answer:

3

Step-by-step explanation:

In order to study the relationship between playing football and traumatic brain injuries, researchers placed accelerometers in the helmets of many high school football teams. Accelerometers measure the amount of hits that boys playing high school football absorb during a season. Suppose the average number of hits absorbed by a helmet during a season was 355 hits with a standard deviation of 80 hits. What is the probability on a randomly selected team of 48 players that the average number of head hits per player is between 340 and 360 hits

Answers

Answer:

56.96% probability on a randomly selected team of 48 players that the average number of head hits per player is between 340 and 360 hits

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a single player:

[tex]\mu = 355, \sigma = 80[/tex]

For the sample mean(of 48 playes).

[tex]n = 48, s = \frac{80}{\sqrt{48}} = 11.547[/tex]

What is the probability on a randomly selected team of 48 players that the average number of head hits per player is between 340 and 360 hits?

This is the pvalue of Z when X = 360 subtracted by the pvalue of Z when X = 340. So

X = 360

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{360 - 355}{11.547}[/tex]

[tex]Z = 0.43[/tex]

[tex]Z = 0.43[/tex] has a pvalue of 0.6664

X = 340

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{340 - 355}{11.547}[/tex]

[tex]Z = -1.30[/tex]

[tex]Z = -1.30[/tex] has a pvalue of 0.0968

0.6664 - 0.0968 = 0.5696

56.96% probability on a randomly selected team of 48 players that the average number of head hits per player is between 340 and 360 hits

what are the cordinates at the center of the circle (x-4)2+(y-5)2=36

Answers

Answer:

Here I labeled it

Step-by-step explanation:

Answer: Center: (4,0) Radius: 6

Step-by-step explanation:

Rewrite in standard form to find the center

What is the area of a rectangle that has a length of 1/4 inch and a width of 1/8 inch?

Answers

Answer:

1/4 * 1/8 = 1/32 inch

Step-by-step explanation:

1/4 * 1/8 = 1/32inch

QUESTION
Two trillion is how much more than seven hundred fifty billion.
Write the answer in scientific notation.

Answers

Umm.... ERROR is the answer
Two trillion is 1250000000 than 750000000

Determine the number of unique triangles that can be made from the following.
For △DEF, ∠F= 50°, DE= 62, and DF=80

Answers

Answer:

No

Step-by-step explanation:

80+50+62 is not equal to 180

Two possible floor plans for a new bathroom are shown.
Is there a value for x for which the perimeters are equal?
What is the linear equations?

Answers

Answer:

Hope it works for u

Step-by-step explanation:

As we have given two shapes bathroom

square and rectangle

Parameter of square= sum of all the sides   ( : In square all sides are equal

Parameter of square= 4*L  = 4*(x+3)       (:L=x+3

similarly,

In rectangle opposites sides  are equal hence

Perimeter of rectangle= 2*length+2*width  ( : length=x+4,width can't be seen clearly so I assume and take it width=x+1  hope this is equal to the width of ur question otherwise do the calculation by ur self).

Perimeter of rectangle= 2*(x+4)+2(x+1)

so now we have to find the value of "x" for which both perimeter are equal, so

perimeter of square= perimeter of rectangle

4*(x+3)=2*(x+4)+2(x+1)  we can also write as

2(x+3)+2(x+3)=2(x+4)+2(x+1)This is the linear equation requirednow to find value of "x"simplify both sides, we get4x+12=4x+100≠2 so that not true and also there is no value of "x"

for which both parameters become equal

so from my side "b" option is correct

Please brain-list it if u find it help-full it requires effort!

Answer: B option is correct. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle.

explanation: I hope that was helpful!

Determine whether each equation represents a linear or nonlinear function.

Answers

Equation       Linear      Non - linear

y = 2x³ + 1       No           Yes

y = 3x              Yes         No

y = x/5              Yes         No

What is a function?

function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

y = 2x³ + 1

For x = 1, 2, 3,

y = 2 + 1 = 3

y = 2 x 2³ + 1 = 2 x 8 + 1 = 17

y = 2 x 3³ + 1 = 2 x 27 + 1 = 54 + 1 = 55

The rate of change.

Between 3 and 17 = 17 - 3 = 14

Between 17 and 55= 55 - 17 = 38

This means the equation is not linear.

y = 3x

For x = 1, 2, 3,

y = 3 x 1 = 3

y = 3 x 2 = 6

y = 3 x 3 = 9

The rate of change.

Between 3 and 6 = 6 - 3 = 3

Between 6 and 9 = 9 - 6 = 3

This means the equation is linear.

y = x/5

For x = 1, 2, 3,

y = 1/5

y = 2/5

y = 3/5

The rate of change.

Between 1/5 and 2/5 = 2/5 - 1/5 = 1/5

Between 2/5 and 3/5= 3/5 - 2/5 = 1/5

This means the equation is linear.

Thus,

y = 2x³ + 1 is a linear equation.

y = 3x is not a linear equation.

y = x/5 is a linear equation.

Learn more about functions here:

https://brainly.com/question/28533782

#SPJ1

helphelphelphelphelphelp

Answers

Answer:

i have no idea

Step-by-step explanation:

Nike is having a 20% off sale on all of their sneakers. If a pair of sneakers normally costs $89, how much will it be during the sale? *

Answers

Answer:

$71.20

Step-by-step explanation:

Multiply 89 to .2 and you get 17.8 then you subtract that from the originat cost.

What reason can be used to complete this proof?


m∠1=m∠3 because ∠1≅∠3.

m∠1+m∠2=m∠CXB and m∠2+m∠3=m∠AXD _________.

m∠1+m∠2=m∠AXD because you can substitute m∠1 for m∠3.

m∠CXB=m∠AXD by the transitive property of equality.

So, ∠AXD≅∠CXB.

Answers

Answer:

Option (2)

Step-by-step explanation:

Given:

∠1 ≅ ∠3

To Prove:

∠AXD ≅ ∠CXB

Solution:

Given question is incomplete; find the complete question in the attachment.

            Statements                                                              Reasons

1). m∠1 ≅ m∠3 because m∠1 ≅ m∠3          1). Given

2). m∠1 + m∠2 = m∠CXB and                    

    m∠2 + m∠3 = m∠AXD                            2). Angle addition postulate

3). m∠1 + m∠2 = m∠AXD                             3). Because you can substitute

                                                                          m∠1 for m∠3

4). m∠CXB = m∠AXD                                   4).Transitive property of equality

5). ∠AXD ≅ ∠CXB

Therefore, Option (2) will be the correct option.

Please help!!

Find the value of x and the length of each side

Answers

Answer:

3

Step-by-step explanation:

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