Maths watch Question
need help with all questions Please and thank you

Part (a)

Explanation:

Let x be the missing value that goes in the box.

This x value adds with the other probabilities to get 0.35+0.4+0.1+x which simplifies to 0.85+x

Set this equal to 1 and solve for x and you should get x = 0.15

Part (b)

Explanation:

Add the probabilities for cat and hamster getting 0.35+0.1 = 0.45

Part (c)

Explanation:

Because the two events are independent, we can multiply the probability of getting a dog with itself, so,

0.4*0.4 = 0.16

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation:

b

step-by-step explanation:

b