Acookie recipe calls for a half cup of chocolate chips per 3 dozen cookies. how many cups of chocolate chips should be used for 10 dozen cookies?

To answer this question, you should set up a proportion that demonstrates the ratio of chocolate chips to cookies.

36 and 120 are used because 1 dozen=12.

Cross multiply and solve for x to get the answer.

The answer is cups.

- "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."