Ben has a box of marbles. 30 of the marbles are red, 14 are green and 16 are blue. Ben randomly selects a marble from the box, records the color and then replaces the marble in the box. If he selects a marble 30 times, how many times do you predict he will select a blue marble?

I predict he will select the blue marble 8 times

Step-by-step explanation:

In total there are 60 marbles so if they select a marble 30 times, that is half of 30. I just took half of the blue marbles and that would be the theoretical probability

Can I have brainliest plz

answer is a

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."