4(2a+P)=c+p+a
express a in terms of c and p

Step-by-step explanation:

   1) 4(2a+p)=c+p+a

   2) Expand: 8a+4p=c+p+a

   3) subract a and 4p: 7a=c-3p

   4) Divide: a=

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.