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3 years ago

14

Carla’s vet suggested that her new puppy have at least 64 square feet of exercise space. Carla plans to build an enclosed, squar

e exercise pen in her back yard. How much fencing will she need for this exercise pen?

1 answer:

strojnjashka [21]3 years ago

4 0

I think it’s 16 per side but that’s 64 ft around I hope this helps sorry if it’s wrong

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The ratio of 6th graders to 7th graders in a class of 35 students is 3:4. How many more 7th graders than 6th graders are in the

algol [13]

Answer:

5

Step-by-step explanation:

we just figure it out by making an equation

3x = 6th graders

4x = 7th graders

35 = total

so

3x + 4x = 35

7x = 35

x = 5

sooooo

3(5)= 15 = 6th graders

4(5) = 20 = 7th graders

SOOOO

20-15 = 5

7 0

4 years ago

A survey of an urban university showed that 750 of 1,100 students sampled attended a home football game during the season. Using

sattari [20]

Answer:

b. 0.6592 and 0.7044

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

A survey of an urban university showed that 750 of 1,100 students sampled attended a home football game during the season. This means that $n = 1100, p = \frac{750}{1100} = 0.6818$

90% confidence interval

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6818 - 1.645\sqrt{\frac{0.6818*0.3182}{1100}} = 0.6592$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6818 + 1.645\sqrt{\frac{0.6818*0.3182}{1100}} = 0.7044$

So the correct answer is:

b. 0.6592 and 0.7044

7 0

3 years ago

Read 2 more answers

If the ratio of a to b is 10 to 3 then a is

Karolina [17]

Answer:

3 1/3 times b

Step-by-step explanation:

10+3 = 13 (total of a and b)

a = 10/13 and b = 3/13

a/b = (10/13)÷(3/13)

= <u>3 1/3</u>

3 0

3 years ago

Firlakuza [10]

Answer:

Step-by-step explanation:

y = -2/3 x multiply both sides the first equation by 6

6y = -4x Add 4x to both sides.

6y + 4x = 0

<u>-9y +4x = - 40 </u> Subtract the bottom equation

15y = - 40 Divide by 15

y = -40/15

y = - 2.7

======================

6y = -4x

6*(-2.67) = -4x

-16 = - 4x

x = - 16/-4

x = 4

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4 years ago

Select all the coordinate pairs that are solutions to y= 2x^2 +3x +1

Katen [24]

Answer:

Step-by-step explanation:

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3 years ago