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White raven [17]

3 years ago

14

The student council had a canned food drive. They collected a total a total of 63 cans on Wednesday. This is 21% of the total ho

w many canned goods were collected in all.

1 answer:

Alex73 [517]3 years ago

4 0

We are told that 21% of the total cans is 63 cans, therefore
100% of all the cans collected would be.

(63*100)/21=300 cans were collected in all

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A rental car company charges drivers a flat fee to rent a car plus $.25 for each mile they drive if a driver paid $100 and drive

Yakvenalex [24]

160(.25) + 100 = y

y= 140

5 0

3 years ago

An isosceles triangle has a perimeter of 36 inches. Its base is 2 1 /2 times longer than each of its legs. What are the lengths

tensa zangetsu [6.8K]

Answer:

8 in, 8 in and 20 in

Step-by-step explanation:

Let the equal sides of the isosceles triangle be x, then

The base = 2.5x

Sum the 3 sides and equate to the perimeter of 36

x + x + 2.5x = 36

4.5x = 36 ( divide both sides by 4.5 )

x = 8

Thus the 2 equal legs = 8 in

base = 2.5x = 2.5 × 8 = 20 in

7 0

4 years ago

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determ

Hunter-Best [27]

Answer:

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

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 level of $1-\alpha$ , 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 $1 - \frac{\alpha}{2}$ .

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not.

This means that $n = 100, \pi = \frac{20}{100} = 0.2$

68% confidence level

So $\alpha = 0.32$ , z is the value of Z that has a pvalue of $1 - \frac{0.32}{2} = 0.84$ , so $Z = 0.995$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 - 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.16$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 + 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.24$

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

4 0

3 years ago

The value of t varies directly with w. When t = 32, the value of w = 56. What is the value of w when t = 92? A 116 B 126 C 161 D

stich3 [128]

Answer:

(D). 182

Step-by-step explanation:

did the math

8 0

3 years ago

What is the length of AC

Arte-miy333 [17]

Answer:

126

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers