Answer:
x represents the number of shirts he bought
Answer:
I got the answer 390 no sure if it's true
Answer:
x = 4
-4x+21 => 5
Step-by-step explanation:
The given triangle in the picture is isosceles triangle which means that two sides of the triangle are equal.
So,

Now
Putting all the values in equation for perimeter

Putting x = 4 in side 1

Hence,
x = 4
-4x+21 => 5
Answer:0 3/4
Step-by-step explanation: