The sum of the measures of angle X and angle Y is 90. If the measure of angle X is 30 less than twice the measure of angle Y, what is the measure of angle X?

Question

anonymous · Answer

make the equation for this

anonymous · Answer

x + y = 90
x = 2y - 30

campbell_st · Answer

you you have angle y 

then x = 2y - 30

so adding the complementary angles

y + 2y - 30 = 90

collect like terms and solve for y

campbell_st · Answer

when you have y, you can find x

campbell_st · Answer

why just give the answers...

staceyg · Answer

I got y=20 when solved your equation but then that would mean x=10.

campbell_st · Answer

well when you collect like terms you get

3y - 30 = 90

add 30 to both sides gives

3y = 120

divide by 3 to get y

staceyg · Answer

Oh right! I did that wrong. Thanks for the help!

campbell_st · Answer

glad to help... good luck