Because the triangles are similar
ac/pr=bc/qr
8/pr=10/4
10*pr=8*4
10pr=32
pr=32/10
pr=3,2
He is wrong because as long as they have the same terms/ variables behind the number it doesn’t matter about if it is positive or negative
A circular pool with a diameter of 18 ft will have a uniform
4 ft concrete walkway poured around it. If the concrete cost $4.25 a square
foot, how much will it cost for the concrete?
This can be solve be solving the area of walkway
Area of walkway is equal to = (pi)( 9 ft +4) ^2– (pi)(9ft)^2
= 276.46 sq ft
Cost = 276.46 sq ft * ($4.25 a square foot) = $1174.70
Answer: I’m not sure, but I think it is solid C.
Step-by-step explanation: Please, make sure you have some knowledge when you answer this question. My answer is an educated guess. I do not want to be responsible for your wrong answers.