5 POINTS PLEASE HELP

1 answer:

7 0

Stacy wanted to share some pictures she had taken on her trip to the Grand Canyon with her friend Laura. She put them in 7 stacks to keep them in order. Each stack had 6 pictures. How many pictures did Stacy have to show Laura?

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A woman drives an SUV that gets 11 mi/gal (mpg). Her husband drives a hybrid that gets 60 mpg. Every week, they travel the same

blondinia [14]

Suppose s and h are the mileage numbers for the SUV and Hybrid, respectively. Then if each vehicle drives 1 mile, the total gas consumption is
.. 1/s +1/h
Then the combined mileage is
.. 2/(1/s +1/h) = 2sh/(s+h)

Option 1: s=12, h=60
.. mpg = 2*12*60/(12+60) = 20

Option 2: s=11, h=75
.. mpg = 2*11*75/(11 +75) = 1650/86 ≈ 19.2

In summary,
.. Option 1: 20.0 mpg
.. Option 2: 19.2 mpg

_____
It usually works out best to increase the efficiency of the least-efficient contributor, as here.

6 0

3 years ago

Khan uses 78ft of fence for a pen and the length is 25ft. What is the width

mariarad [96]

Answer:

The width is 14ft

Step-by-step explanation:

Given

$Fence = 78$