3 years ago

Which statements are true about the graph?

Mathematics

1 answer:

N76 [4]3 years ago

8 0

Answer: read for answer

Step-by-step explanation:

The graphs shows exponential decay

The graph shows Y equals 2X reflected over the Y axis

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Step-by-step explanation:

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The Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2008. Find the approximate pe

olya-2409 [2.1K]

Answer:

74%

Step-by-step explanation:

We have been given that the Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2008.

We will use percent decrease formula to solve our given problem.

$\text{Percent decrease}=\frac{\text{Initial}-\text{Final}}{\text{Initial}}\times 100\%$

$\text{Percent decrease}=\frac{31-8}{31}\times 100\%$

$\text{Percent decrease}=\frac{23}{31}\times 100\%$

$\text{Percent decrease}=0.741935483\times 100\%$

$\text{Percent decrease}=74.1935483\%$

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Therefore, there is an approximate 74% decrease in cost per minute for the long distance call from 1978 to 2008.

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3 years ago

In the figure, j∥k and m∠2 = 117°. What is the m∠3? Enter your answer in the box. ° Line t diagonally crossing parallel lines j

svetoff [14.1K]

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63 degrees

Step-by-step explanation:

Since the angles are going counter-clockwise, angle 2 and angle 3 are supplementary, meaning that they add up to 180 degrees.

Since angle 2 is 117 degrees, 180 - 117 = 63. Therefore, angle 3 is 63 degrees

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