Question

Given m∠A = 9x + 1, m∠B=3x and m∠C = 11x - 5, find m∠A, m∠B and m∠C.

Answer 1

is this in a triangle?

Answer 2

yes

Answer 3

you know that the angles of triangle add up to 180degrees

Answer 4

ya

Answer 5

so, the sum of m∠A, m∠B and m∠C. = 180, because there is only \[x\] involved we can sum all the angle formulae that is A+B+C=180

Answer 6

\[(9x+1) + 3x + (11x-5)=180\]

Answer 7

combine like terms..solve for x

Answer 8

ok thanks

Answer 9

i'll be here if you want to check

Answer 10

is the answer 8

Answer 11

\[23x-4=180\] \[x=(180+4)/23\]\[x=184/23\] \[x=8\]

Answer 12

yes!

Answer 13

so now, put x back in to each equation, what is angle A? B? C?

Answer 14

A=73, B=24, C=83

Answer 15

i figured it out thanks