Answer:
5
Step-by-step explanation:
58+78=131
180-131=49
10(5)-1
=5
An isosceles triangle is a triangle that has two sides of equal length.
So, you have sides of 7,7,4 in which perimeter is 18
or you have sides of 4,4,7 in which perimeter is 15.
Multiply 60 by .75, which gives you 45 Points. The answer is B.