20. The middle school track team consists of 7th and 8th graders. There are 79 seventh graders
which is 47% of the team. How many 8th graders are on the team?
89
79
82
16

Option A (89)

Step-by-step explanation:

Number of 7th graders :

Let x represent the total number of the team.

The expression will then be:

47% of x = 79

47 / 100 * x = 79

47x / 100 = 79

Cross Multiply.

47x = 79 * 100

x = 7900/47

x = 168.08

x = 168 (approximately)

Therefore, it means we have a total of 168 team members.

Numbers of 8th graders:

Total number of team members minus number of 7th graders

8th graders = 168 - 79

8th graders = 89

There are 89 8th graders on the team

y=mx+b

step-by-step explanation:

m slope

b y-intercept

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )