I think the answer is a. 42.5
Answer:
Step-by-step explanation:
square of 15 + square of x = square of 21
225 + square of x = 441
441 - 225 = 216
x = 216
The greatest number is 75431
Answer:
The common factor is (x3 – 4)(2x + 5)
Step-by-step explanation:
1. find gcf
2. factor out the gcf
3. use grouping
Answer:
y = -x
Step-by-step explanation: