I’m so slow at math so please help

x=20. if trianngles are similar

Step-by-step explanation:

the side is 11 in one picture, and then 55 in the next., multiplied by 5.

4*5 is 20, and thus x=20

a. Use the mean value theorem. 16 falls between 12 and 20, so

(Don't forget your units - 5 m/min^2)

b. gives the Johanna's velocity at time . The magnitude of her velocity, or speed, is . Integrating this would tell us the total distance she has traveled whilst jogging.

The Riemann sum approximates the integral as

If you're not sure how this is derived: we're given 5 sample points, so we can cut the interval [0, 40] into 4 subintervals. The lengths of each subinterval are 12, 8, 4, and 16 (the distances between each sample point), and the height of the rectangle approximating the area under the plot of is determined by the value of at each sample point, 200, 240, |-220| = 220, and 150.

c. Bob's velocity is given by , so his acceleration is given by . We have

and at his acceleration is m/min^2.

d. Bob's average velocity over [0, 10] is given by the difference quotient,

m/min