2x + 4x - 21 = 0
6x - 21 = 0
6x = 21
x=3.5
First off you need to multiply 6 by 3 for how many miles she went and then divide the leftover total by two (For the last two hours) to realize she needs to run 4.1 mph.
Hope this helped :)
Answer:
y = 42
Step-by-step explanation:
18 - y = -24
18 + 24 - y = 0
18 + 24 = y
18 + 24 = 42
i think
Answer:
7x7 + 49 so 7+7+7+7+7+7+7
Step-by-step explanation: