A hexagon graphed on a coordinate plane underwent a rotation about the origin, a reflection across the x-axis, a translation up, and a dilation with its center at one of the hexagon's vertices to produce another hexagon. Which of these statements is true about the original hexagon and the new hexagon?
A
They are similar
They may or may not be similar, depending on the scale factor of the dilation
с
They may or may not be similar, depending on the number of degrees rotated.
D
They are not similar

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94