Hello! The solution to this equation does work, because 5 * 3 is 15. When you subtract a negative, you’re actually adding. 15 + 6 is 21. 3 is x and -6 is y. When the values are plugged into the equation, they work.
Answer:
Step-by-step explanation:
Associative property
Perfect squares are unlike the square roots above, because, when simplified, they become whole numbers.
For example:
√4 = 2
√16 = 4
√64 = 8
etc
hope this helps
Answer:
x = -7
Step-by-step explanation:
4(1 - x) + 2x = -3 (x + 1)
4 - 4x + 2x = - 3x - 3
- 4x + 2x + 3x = - 3 - 4
x = -7
Answer: 30 mph
Step-by-step explanation: Divide 158,400 by 5280(the amount of feet in a mile) to get your answer.