Suppose the linear regression line y= -0.3x 11.2 predicts the time, in minutes, it takes you to finish an obstacle course after training for x days.

About how much time would it take you to finish the course after training for

8 days?

8.8 minutes

Step by step explanation:

Assuming you meant "y = -0.3x + 11.2" instead of "y = -0.3x 11.2", here is the (if not just let me know :) )

Since x is the variable that represents the number of days, and 8 is the number of days you will be training, let's plug 8 in for x in the equation:

y = -0.3x + 11.2 -> y = -0.3(8) + 11.2

Solving this, we get:

y = -0.3(8) + 11.2 -> y = -2.4 + 11.2 -> y = 8.8

The variable y equals the time in minutes, so our answer is 8.8.

answer: the two figures are congruent.

step-by-step explanation: they're congruent because figure efgh is reflected across the x and y axis but it was also rotated.

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80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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