3 years ago

Which equation represents exponential decay?

Mathematics

1 answer:

malfutka [58]3 years ago

5 0

Answer:

Step-by-step explanation:

Decay is getting smaller, and c is the only one where B will reduce the size of something.

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A small aircraft flies a 2160-mi round trip in a 45 mi/h wind. Find the average rate of speed for the trip if the aircraft can f

jok3333 [9.3K]

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Answer:

216 mi/h

Step-by-step explanation:

The time for the trip with the wind is ...

(1080 mi)/(225 +45 mi/h) = 4 h

The time for the trip against the wind is ...

(1080 mi)/(225 -45 mi/h) = 6 h

The average speed for the entire round trip is ...

(2160 mi)/(4 +6 h) = 216 mi/h

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3 years ago

Question 2

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Answer:

12x + 20

Step-by-step explanation:

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2 years ago

It takes Nate five hours to paint a wall, and it takes Jill seven hours to paint the same wall. About how many hours will it wil

Alexxx [7]

Let's use the relation:

$\mathsf{\dfrac{1}{x} = \dfrac{1}{5} + \dfrac{1}{7}}\\ \\ \\ \mathsf{\dfrac{1}{x} = \dfrac{7+5}{35}}\\ \\ \\ \mathsf{\dfrac{1}{x} = \dfrac{12}{35}}\\ \\ \\ \mathsf{x = \dfrac{35}{12}}\\ \\ \\ \boxed{\mathsf{x\approx 2.92 \ h}}$

It would take about 3 hours to complete the work.

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3 years ago

What’s 3/5y+(-6/5y)=

sladkih [1.3K]

Answer:

-3y/5

Step-by-step explanation:

3/5y+(-6/5y)=

Since the denominator is the same, we can add the numerators

3y - 6y

----------------

-3y/5

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Bingel [31]

Answer:

3 1/2

Step-by-step explanation:

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