Alex makes some sandwiches using 6 pieces of bread and 9 slices of cheese. He makes more sandwiches for his friends, using a total of 16 pieces of bread. How many slices of cheese will he need?

x=30

step-by-step explanation:

- "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."

answer: 819.89 miles across america

step-by-step explanation:

21

jk it's 20

step-by-step explanation: