Exercise 10 Page 773

When calculating a probability, we are comparing the number of favorable outcomes to the number of possible outcomes. To calculate the probability of a spinner landing on a blue section in the given spinner we will use the Probability Formula. P=Favorable Outcomes/Possible Outcomes Now we can look at the spinner and find the number of possible outcomes.

On the spinner there are 1 green, 2 red, and 3 blue parts. The sum of these values is the number of possible outcomes. 1+2+3= 6 Out of these, 3 are blue, which is the number of favorable outcomes. Now we have enough information to calculate P(blue).

P=Favorable Outcomes/Possible Outcomes

SubstituteValues

Substitute values

P(blue)=3/6

ReduceFrac

a/b=.a /3./.b /3.

P(blue)=1/2

The probability of the spinner landing on a blue part is 12, which can also be written as 1:2.