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2 years ago

One lap around a track is 1/4 mile. on monday, stacy ran 11 laps.

Mathematics

1 answer:

creativ13 [48]2 years ago

8 0

A. 2¾ miles

b. 22 laps/hr

c. 12 laps

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21. Brian wants to purchase a piece of fabric

ella [17]

Brian should purchase Choice C of fabric

<em><u>Solution:</u></em>

Given that Brian wants to purchase a piece of fabric that is between 49 and 53 inches long

So piece of fabric should be between: 49 and 53 inches

Choice A is $4\frac{3}{4}$ feet long

Let us convert feet to inches

$4\frac{3}{4} feet = \frac{4 \times 4 + 3}{4} = \frac{19}{4} feet$

Now convert to inches

We know that,

1 feet = 12 inches

$\frac{19}{4} feet = \frac{19}{4} \times 12 = 57 inches$

But this choice is greater than given condition that piece of fabric should be between: 49 and 53 inches

So this is not correct

Choice B is $4\frac{1}{2}$ feet long

$4\frac{1}{2} feet = \frac{2 \times 4 + 1}{2} = \frac{9}{2} feet$

Now convert to inches

$\frac{9}{2} feet = \frac{9}{2} \times 12 inches = 54 inches$

But this choice is greater than given condition that piece of fabric should be between: 49 and 53 inches

So this is not correct

Choice C is $4\frac{1}{3}$ feet long

$4\frac{1}{3} feet = \frac{3 \times 4 + 1}{3} = \frac{13}{3} feet$

Now convert to inches

$\frac{13}{3} feet = \frac{13}{3} \times 12 inches = 52 inches$

So this 52 inches lies between 49 and 53 inches

So Brian should purchase Choice C of fabric

8 0

3 years ago

120 is what percent of 40?

Keith_Richards [23]

120 would be 300% of 40

3 0

2 years ago

Read 2 more answers

Find the volume of prism

soldier1979 [14.2K]

Answer: 343 ft^3

Step-by-step explanation:

To find the volume of a cube, the one side length is raised to the power of three whihc comes to 343 ft^3

8 0

3 years ago

Determine whether or not the procedure described below results in a binomial distribution. If it is not binomial, identify at l

ArbitrLikvidat [17]

Answer:

a) it is not a binomial, it is hypergeometric distribution.

Step-by-step explanation:

a) Four hundred different voters in a region with two major political parties, A and B, are randomly selected from the population of 3000 registered voters.

it is not a binomial because the probability of succes changes between one trial and another one, so the trials are not independent.

5 0

3 years ago

If 3x−y=12, what is the value of 8x/2y ? A) 212 B) 44 C) 82 D) The value cannot be determined from the information given.

Stella [2.4K]

Answer:

D) The value cannot be determined from the information given

Step-by-step explanation:

If 3x−y=12, what is the value of 8x/2y ?

We can progress till:

3x-y=12
y= 3x-12
8x/2y= 4x/y= 4x/(3x-12),

we need the value of x to determine the result.

So the answer is the last choice

7 0

3 years ago