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Delicious77 [7]

3 years ago

7

An ant can crawl 3/4 of a yard in 1/2 minute. How long will it take for the ant to crawl 12 yards?

2 answers:

Softa [21]3 years ago

7 0

Answer:

18 yards

Step-by-step explanation:

Since it takes 1/2 minute to go 3/4 minutes, and we want to know how long it takes to go 12 minutes, you can divide 12 by 1/2, which is 24, then multiply 24 by 3/4ths, and you get 18.

Elan Coil [88]3 years ago

5 0

Answer:

6 mins

Step-by-step explanation:

An ant can crawl 3/4 of a yard in 1/2 minute. How long will it take for the ant to crawl 12 yards?

Ant crawls 3/4 of a yard in = 1/2 min = 60/2 sec = 30 sec

Ant crawls 12 yards in = 12 * 30 = 360 sec = 360/60 = 6 minutes

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The daily revenues of a cafe near the university are approximately normally distributed. The owner recently collected a random s

lbvjy [14]

Answer:

The sample size to obtain the desired margin of error is 160.

Step-by-step explanation:

The Margin of Error is given as

$MOE=z_{crit}\times\dfrac{\sigma}{\sqrt{n}}$

Rearranging this equation in terms of n gives

$n=\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2$

Now the Margin of Error is reduced by 2 so the new M_2 is given as M/2 so the value of n_2 is calculated as

$n_2=\left[z_{crit}\times \dfrac{\sigma}{M_2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{\sigma}{M/2}\right]^2\\n_2=\left[z_{crit}\times \dfrac{2\sigma}{M}\right]^2\\n_2=2^2\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4\left[z_{crit}\times \dfrac{\sigma}{M}\right]^2\\n_2=4n$

As n is given as 40 so the new sample size is given as

$n_2=4n\\n_2=4*40\\n_2=160$

So the sample size to obtain the desired margin of error is 160.

4 0

3 years ago

At the fair,Kate found a strange machine with a sign on it labeled, enter a number. When she pushed the number 15, the machine d

Ivan

apparently subtracting 6

15-6=9

23-6=17

100-6=94

77-6=71

6 0

3 years ago

DerKrebs [107]

B. Y equals 0, because if you plug it in ( multiply 2 by 9 ) you will get 18-18 which equals 0.

6 0

3 years ago

A flute is on sale for 20% off. Including the discount and 8% tax, the sales price is $216.

Len [333]

Answer:

Before Tax: $240

After Tax: $259.20

Step-by-step explanation:

If we are trying to find the original price then here:

216/1.08 = 200

This took away the tax now we need to take away the discount:

200 x 1.2 = 240

Before Tax: $240

After Tax: $259.20

7 0

3 years ago

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Goshia [24]

Answer:

96.48

52.472

Step-by-step explanation:

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2 years ago

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