Answer: A.
The reason is because if you're adding a negative to a number, it's subtraction, which is in the expression.
Answer:
a = 2
b = 18
a/b = 1/9
Step-by-step explanation:
Answer: 26.5cm2
Step-by-step explanation:
Answer:
Third option: 12x^2+8x+25
Step-by-step explanation:
s1=8x^2
s2=4x^2+15
s3=8x+10
Total perimeter of the pool edge: P
P=s1+s2+s3
Replacing s1, s2 and s3 in the formula above:
P=(8x^2)+(4x^2+15)+(8x+10)
P=8x^2+4x^2+15+8x+10
Adding like terms:
P=12x^2+8x+25
