Distributive property of multiplication ! Here's how :( 7X50) + (7X3) = unknown unknown = 371
Answer:
Step-by-step explanation:
8r + 9 + 7r + 6 = 90
15r + 15 = 90
15r = 75
r = 5
8(5) + 9 = 40 + 9 = 49
7(5) + 6 = 35 + 6 = 41
2x^2-5xy-y^3 if x=-3, and y=-2
2(-3)^2- 5(-3)(-2) -(-2)^3
=2(9) - 5(6) - (-8)
= 18 - 30 + 8
= -4
Answer:
It's B.
Step-by-step explanation: