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3 years ago

14

College roommates John and David were driving home to the same town for the holidays. John drove 55mph, and David, who left an h

our later, drove 60mph. How long will it take for David to catch up to John?

1 answer:

pentagon [3]3 years ago

7 0

Answer:

sorry

Step-by-step explanation:

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Which choice is equivalent to the product below?<br> Square root 2 • square root 3 • square root 8

SIZIF [17.4K]

That would be simplified into

1.41 • 1.73 • 2.82 = 6.9

i don’t know what the choices are bc you didn’t put them but hopefully this does someone some good <3

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3 years ago

Convert 7-6ths into a mixed number

AlexFokin [52]

11/1.
Hope this helps,
and I hope you have a productive day!

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3 years ago

A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimat

Contact [7]

Answer: a. n= 1068

b. n= 164

Step-by-step explanation:

The formula to find the sample size :

$n=p(1-p)(\dfrac{z^{*}}{E})^2$

, where p=prior population proportion , z* = critical z-value and E = Margin of error.

Here , let p=proportion of computers that use a new operating system.

Given : Confidence level = 95%

i.e. z* = 1.96 [by z-table]

Margin of error : E = 3% =0.03

a. If p is unknown , then we assume p=0.5

Then, $n=(0.5)(1-0.5)(\dfrac{1.96}{0.03})^2=1067.11111\approx1068$

i.e. n= 1068

b. p=0.96

Then, $n=(0.96)(1-0.96)(\dfrac{1.96}{0.03})^2=163.908266667\approx164$

i.e. n= 164.

6 0

3 years ago

How to determine the volume of a cup?

snow_lady [41]

Answer:

1 to 8 in cups or 1 to 16 in table spoons

Step-by-step explanation:

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3 years ago

What is 5(-2/3)? And how did you get it?

babunello [35]

Multiply 5 and -2. Then divide by 3.

-10/3 = -3.33333333

This can be rounded to -3.3

Hope this helps!

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3 years ago