The measures of the angles in triangle ABC are in the ratio of 3 : 7 : 8. Determine the measure of each angle.

20 points as reward

a:30 b:70 c:80

Step-by-step explanation:

triangle= 180*

3:7:8= 180*

7+3+8= 18

180/18= 10

a= 3x10= 30*

b=7x10= 70*

c=8x10= 80*

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

a. is correct