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aleksandrvk [35]
3 years ago
10

Simplify and solve this equation: 4m + 9 + 5m – 12 = 42.

Mathematics
2 answers:
Anton [14]3 years ago
8 0
So first separate the expressions and numbers so it will be easier to solve. expressions on the left and numbers on the right or vice versa. (be carefull with the addition and subtraction signs)
4m+9+5m-12=42
5m+4m=42+12-9
9m=45
m=5

Therefore the answer is C. m=5
FinnZ [79.3K]3 years ago
5 0
4m + 9 + 5m - 12 = 42
9m + 9 -12 = 42
9m -3 = 42
9m = 42 + 3 
9m = 45 
m= 45/9
m= 5
Answer is C. 
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Step-by-step explanation:

if there is no mistake in the problem description, I read the following function :

C(x) = y = 0.3x² - 1.2x + 2

I don't know if you learned this already, but to find the extreme values of a function you need to build the first derivative of the function y' and find its solutions for y'=0.

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5 0
2 years ago
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Pls answer asap! i need help :c
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