You have to input the 5 into the x place. so it would be y=3(5) and you get the answer y=15
<span>
four and fifty-one hundredths</span>
Answer:
Step-by-step explanation:
I think that x may equal to -3. Because the sum of a triangle is always 180. 55+54=109 and 180-109=71 and -3+74=71
Answer:

Step-by-step explanation:
we know that
An isosceles triangle has two equal sides and two equal angles
so
The perimeter of triangle is equal to

Eliminate parenthesis

Combine like terms
