body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

Glencoe Math: Course 2, Volume 2

GM

Glencoe Math: Course 2, Volume 2 View details

1. Probability of Simple Events

Finish the assignment

Continue to next subchapter

Exercise 4 Page 715

Use the Probability Formula.

Fraction: 5/8
Decimal: 0.625
Percent: 62.5 %

Practice makes perfect

When calculating probability, we are comparing the number of favorable outcomes to the number of possible outcomes. To calculate the probability that a spun color is not green we will use the Probability Formula. P=Favorable Outcomes/Possible Outcomes Let's take a look at the spinner.

The spinner has 8 sections, so the number of possible outcomes is 8. Out of these, 5 sections are not green, which is the number of favorable outcomes. Now we have enough information to calculate P(not green).

P=Favorable Outcomes/Possible Outcomes

SubstituteValues

Substitute values

P(blue)=5/8

The probability of spinning a section that is not green is 58. Next, we can rewrite the fraction as a decimal and as a percent.

As a Decimal

To write a fraction as a decimal, we divide the numerator by the denominator.

division

We found that 58 expressed as a decimal is 0.625.

As a Percent

To write a fraction as a percent, we first find an equivalent fraction with a denominator of 100. 5/8=p/100 Let's solve the equation for p.

5/8 = p/100

LHS * 100=RHS* 100

5/8* 100 =p/100* 100

FracMultDenomToNumber

a/100* 100 = a

5/8* 100 = p

Write as a decimal

0.625* 100 = p

Multiply

62.5 = p

Rearrange equation

p = 62.5

The fraction written as a percent is 62.5 %.

Subchapter links

Guided Practice p.714

Independent Practice p.715-716

H.O.T. Problems p.716

Standardized Test Practice p.716-718

Extra Practice p.717

Common Core Review p.718