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yan [13]
3 years ago
15

starting at home, nadia traveled uphill to the grocery store for 30 minutes at just 4 mph. she then traveled back home along the

same path downhill at a speed of 12 mph.what is her average speed for the entire trip from home to the grocery store and back?
Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0

Answer:

Distance from home to store = 4 * 0.5 = 2 miles.

Time taken to return home = (2/12) * 60 =10 minutes.

Total distance traveled = 2 * 2 = 4 miles.

Total time taken = 30 + 10 = 40 minutes.

Average speed for entire trip = total distance / total time in hours.

Step-by-step explanation:

ankoles [38]3 years ago
3 0
Distance from home to store = 4 * 0.5 = 2 miles.
Time taken to return home = (2/12) * 60 =10 minutes.
Total distance traveled = 2 * 2 = 4 miles.
Total time taken = 30 + 10 = 40 minutes.
Average speed for entire trip = total distance / total time in hours.
Average\ speed=\frac{4}{\frac{40}{60}}=\frac{4\times60}{60}=6\ mph
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A truck is being filled with cube-shaped packages that have side lengths of 1/4 foot. The part of the truck that is being filled
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Answer:

24000 pieces.      

Step-by-step explanation:

Given:

Side lengths of cube = \frac{1}{4} \ foot

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Question asked:

What is the greatest number of packages that can fit in the truck?

Solution:

First of all we will find volume of cube, then volume of rectangular prism and then simply divide the volume of prism by volume of cube to find the greatest number of packages that can fit in the truck.

Volume\ of\ cube =a^{3}

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The greatest number of packages that can fit in the truck = Volume of prism divided by volume of cube

The greatest number of packages that can fit in the truck = \frac{375}{\frac{1}{64} } =375\times64=24000\ pieces\ of\ cube

Thus, the greatest number of packages that can fit in the truck is 24000 pieces.                                

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