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2 years ago

The temperature was 78°F at 3 P.M. Each hour for

Mathematics

1 answer:

polet [3.4K]2 years ago

6 0

Answer:

66 °F

Step-by-step explanation:

At 4 P.M., the temperature had decreased by 3° from the temperature at 3 P.M., so was ...

4 P.M. temp = 78 °F -3° = 75 °F

This was repeated until 7 P.M.

5 P.M. temp = 75 °F -3° = 72 °F

6 P.M. temp = 72 °F -3° = 69 °F

7 P.M. temp = 69 °F -3° = 66 °F

The temperature at 7 P.M. was 66 °F.

Of course the repeated subtraction can be simplified using multiplication. The subtraction of 3° four times is equivalent to the subtraction of . . .

(3°)(4) = 12°

That is, the temperature at 7 P.M. is ...

78 °F -3°×4 = 78 °F -12° = 66 °F

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Andreyy89

Answer:

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1 year ago

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Artemon [7]

Answer:

Let p be the population at t be the number of years since 2011. Then, $p=2000-50t$

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Step-by-step explanation:

Given: The population at Bishop High School students in 2011 =2000

Also, Every year the population decreases by 50 students which implies the rate of decrease in population is constant.

So, the function is a linear function.

Let p be the population at t be the number of years since 2011.

Then, $p=2000-50t$

So at t=0, p=2000

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3 years ago

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Answer:

x = 6

Step-by-step explanation:

54/6 is 9. This is the only correct one.

Hope it helps!

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