Answer:
x + y = 5
Step-by-step explanation:

Answer:
39 + 5d
Step-by-step explanation:
First multiply 5 by 9 and 5 by d then subtract 6 from 45 (which you get from multiplying 5 by 9) and you get 39 and multiply 5 by d so you get 39 + 5d
Answer:
8
Step-by-step explanation:
Substitute x = 1 and y = 3 into the expression
(y - x)³
= (3 - 1)³
= 2³
= 8
Answer:
7.84
Step-by-step explanation:
Switch to fractions and keep change flip.