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makvit [3.9K]
2 years ago
11

The graph shows the distance Arlene ran on Saturday preparing for a marathon. What is the rate of change and what does it repres

ent?

Mathematics
1 answer:
andreev551 [17]2 years ago
3 0

Answer:

Rate of change = 6 miles per hour

Step-by-step explanation:

Rate of change of the line is represented by the slope of the line.

Formula to get the rate of change is,

m = \frac{\triangle y}{\triangle x}

From the graph attached,

Given straight line is passing through two points (2, 12) and (4, 24).

Rate of change = \frac{y_2-y_2}{x_2-x_1}

                          = \frac{24-12}{4-2}

                          = 6

Rate of change of the line = 6 miles per hour

Therefore, rate of change of the graph will define the speed of Arlene.

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Answer: approximately 49 feets

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The diagram of the tree is shown in the attached photo. The tree fell with its tip forming an angle of 36 degrees with the ground. It forms a right angle triangle,ABC. Angle C is gotten by subtracting the sum of angle A and angle B from 180(sum of angles in a triangle is 180 degrees).

To determine the height of the tree, we will apply trigonometric ratio

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Opposite = x feets

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x = 25tan36

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x = 18.1625

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y^2 = 25^2 + 18.1625^2

y^2 = 625 + 329.88

y^2 = 954.88

y = √954.88 = 30.9 meters

Height of the tree before falling was

18.1625+30.9 = 49.0625

The height of the tree was approximately 49 feets

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