Answer:
or 
.
Step-by-step explanation:
Suppose, the first side is a, the second side is b, and the third side is c. So:
→ a = s - 4
→ b = s
→ c = (s - 4) + 3
→ a + b + c = 15
First step, find the value of s
a + b + c = 15
(s - 4) + s + (s - 4) + 3 = 15
3s - 5 = 15
3s = 15 + 5
3s = 20

So, the third side is
c = (s - 3) + 4
c = s + 1
c = 

.
Happy to help :)
Answer:
z=40 degrees
Step-by-step explanation:
a triangle is 180 degrees
<ACB=50 (180-130=50)
50+90=140
180-140=40
B has the steeper slope because the rate of change of values is much higher than A
Answer:
She should earn 225 dollars.
Step-by-step explanation:
I know this because 50 ÷ 4 = 12.5 and 12.5 × 18 = 225.
Answer:
C
Step-by-step explanation: