2 years ago

A train travels 82 kilometers in 2 hours, and then 83 kilometers in 2 hours. What is its average speed?

Mathematics

1 answer:

Sholpan [36]2 years ago

4 0

41.25 kilometers per hour.

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The hourly wage is $7.50. John worked 7 hour. How much did he<br> earn?

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52.5

Step-by-step explanation:

7.50 x 7

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2 years ago

Monica deposits $100 into a savings account that pays a simple interest rate of 4.5%, Paul

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Which expression is a perfect cube?

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Answer:

Only $y^{24}$ is a perfect cube.

Step-by-step explanation:

$x^{8}$ is not a perfect cube because 8 is not a multiple of 3.

Now, $y^{24}$ is a perfect cube since 24 is a multiple of 3.

So, $y^{24}$ can be expressed as

$y^{24} =y^{8+8+8}= y^{8} \times y^{8} \times y^{8}= (y^{8}) ^{3}$

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And also $s^{64}$ is not a perfect cube as 64 is not a multiple of 3.

Therefore, only $y^{24}$ is a perfect cube. (Answer)

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3 years ago

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a piggy bank contains 50 coins of pennies, nickels, dimes, quarters, half-dollars that equal $8.32 how many of each

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where is the rest of the question?

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3 years ago

If s= 7cm and t=24cm what is the length of R?

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R=25
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7^2+24^2c^2
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2 years ago

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