The answer is C that is X=27
view the picture for step by step solution
What is the first step in solving for the solution to this problem? 2(m + 10) = 4(m -15)
1 answer:
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Answer:
9
Step-by-step explanation:
Create a proportion
84 divide by what gives you 12? 7
So divide 63 by 7, and you get 9.
This doesn't work with all of these problems so you can always cross multiply then divide.
12(63) = 756
84(x) = 84x
84x = 756
84x/84 = 756/84
x = 9
Answer:
4.6 hours
Step-by-step explanation:
Let 'S' be the number of study hours, 'C' be the number of class attendance hours and 'G' be his prior GPA. His new GPA is given by:
For C = 4 hours and G = 2.75, the number of study hours required to reach a GPA of 4.0 is:
Sam needs to study 4.6 hours in order to get a 4.0 GPA.