the sum of all the angles in a triangle are equal to 180
so you can add the 3 given angles together to equal 180:
5y + 2y + 2y = 180
or since all three angles have the same letter, combine the 3 angles to equal 180:
9y = 180
Answer from: Quest
answer: the answer is one
step-by-step explanation:
pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1
Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano