Bob drove from home to work at 75 mph. After work the traffic was heavier, and he drove home at 40 mph. His driving time to and from work was 1 hour and 9 minutes. How far does he live from his job?

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Avg speed for the round trip = 2*75*40/(75+40) = 6000/115 = 1200/23 mi/hr

RT distance = 1200/23 * 69 minutes * 1 hr/60 mins =

= 60 miles

30 miles each way

Step-by-step explanation:

4 0

3 years ago

Weekly demand for milk at a small grocery store is normally distributed with a mean of 251 gallons per week and standard deviati

slavikrds [6]

Solution

Given

mean = 251

standard deviation = 33

(a)

$\begin{gathered} P(Z$

Hence, X = 300

7 0

1 year ago

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Joey has a beach ball with a radius of 20 cm. What volume of air will it hold when fully inflated? [Round to nearest tenth.]

nadya68 [22]

It would be D. because the volume of a sphere is 4/2 x pi x radius^3.

4 0

2 years ago

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Can someone explain this step by step? I'm very confused on how to solve it. Thanks!

Rashid [163]

Answer:

x = -8

Step-by-step explanation:

I will show each step algebraically. If you need further explanation, feel free to ask questions :)

$\frac{x}{2} +7=3\\$ Rewrite

$\frac{x}{2} =-4$ Subtract 7

$x =-8$ Multiply by reciprocal (2/1)

I hope this helps!

3 0

2 years ago

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