18sqrt(x)
I'm assuming that 3(sqrt(x))5 is equal to 15sqrt(x). If that is the case, just perform the multiplication within each term and treat the sqrt(x) as a variable when you add the all together. It is okay because they are like terms.
ANSWER:
We have to find new side-lengths of PQR triangle.
Original sides are.

After multiplying by 2.5 we get

These are the new sides of the P'Q'R' triangle.
Answer:56
Step-by-step explanation:
50 - 23 + 29 = 56
The answer is 45 degrease