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Ainat [17]
3 years ago
14

Krissy ran three miles one morning she ran the first mile in 11. 74 minutes the second mile in 11. 26 minutes in the third mile

in 12.12 minute Rounded to the nearest hundredth what is the total number of minutes that it took Krissy to run these three miles?

Mathematics
1 answer:
gladu [14]3 years ago
8 0
Add up all the miles- 11.74+12.12+11.26 is 35.12. 34.12 minutes is the answer
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The number of miles Ford trucks can go on one tank of gas is normally distributed with a mean of 350 miles and a standard deviat
kati45 [8]

Answer:

The probability that a randomly chosen Ford truck runs out of gas before it has gone 325 miles is 0.0062.

Step-by-step explanation:

Let <em>X</em> = the number of miles Ford trucks can go on one tank of gas.

The random variable <em>X</em> is normally distributed with mean, <em>μ</em> = 350 miles and standard deviation, <em>σ</em> = 10 miles.

If the Ford truck runs out of gas before it has gone 325 miles it implies that the truck has traveled less than 325 miles.

Compute the value of P (X < 325) as follows:

P(X

Thus, the probability that a randomly chosen Ford truck runs out of gas before it has gone 325 miles is 0.0062.

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3 years ago
Which expression represents the volume of the prism?
Tamiku [17]

Answer:

x³-2x²  = x2(x – 2) cubic units

Step-by-step explanation:

The volume of a prism is found by multiplying the base area by the height. The base area is a parallelogram and so the area is x*(x-2) = x² -2x.

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7 0
3 years ago
Read 2 more answers
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Natalija [7]

Answer:

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Step-by-step explanation:

The critical value for one tailed test is t ∝(7) > 1.895

A one tailed test is performed to test the claim that advertisements were viewed more in the morning (before noon) or in the evening (after 5pm)

The null and alternative hypotheses are

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The calculated value of t = -1.152587077  which is less than the critical region hence the null hypothesis cannot be rejected .

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If two tailed test is performed the critical region is t Critical two-tail 2.364624252

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Hence μm =  μe or    μm ≤ μe

P(T<=t) two-tail 0.286916252  > 0.025

Therefore

b. No, there was no difference between Morning (M= 32), and Evening (M=40.625), (t [7] = 1.15, p > .05).

Option b gives the best answer.

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Answer:

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