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3 years ago

7

two cars leave Memphis from exactly the same spot. one traveling north at 70 mph and the other traveling south at 65 mph. how lo

ng does it take before the cars are 270 miles apart?

1 answer:

Gemiola [76]3 years ago

8 0

Answer:

2 hours

Step-by-step explanation:

270 = (70+65) * t

270= 135t

t = 2

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Penelope is going to the carnival to ride the rides. It costs $20 to get into the

Dimas [21]

Answer:

35=0.5x+20

Step-by-step explanation:

y=mx+b

35= money you can spend

0.5= cost of each ride

x=number of rides you ride

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3 years ago

2 1/11 as a decimal is?

Mkey [24]

Answer:

2.090909...

Step-by-step explanation:

Write as improper fraction and then divide

23/11=2.090909...

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3 years ago

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The mean number of hours of part-time work per week for a sample of 526526 college students is 2828. If the margin of error for

sveta [45]

Answer:

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

Step-by-step explanation:

A confidence interval has the following format.

$\mu_{x} \pm M$

In which $\mu_{x}$ is the mean of the sample and M is the margin of error.

In this problem, we have that:

$\mu_{x} = 28, M = 2.2$

$\mu_{x} - M = 28 - 2.2 = 25.8$

$\mu_{x} + M = 28 + 2.2 = 30.2$

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

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3 years ago

Is y = 6x direct, inverse or neither?

Morgarella [4.7K]

Direct variation always has the relationship y=kx. Indirect inverse variation always has the relationship y=k/x.

In this case y=kx, where k=6, so this is a direct variation.

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3 years ago

Please help with this question!!!

Alexus [3.1K]

Answer: f (x) x 1/200

Step-by-step explanation:

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2 years ago