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alekssr [168]
4 years ago
8

A system of equations is shown below: n = 3m + 5 n − 2m = 3 What is the solution, in the form (m, n), to the system of equations

?
a. (2,11)
b. (1,8)
c. (-2,-1)
d. (-3,-4)
Mathematics
1 answer:
marshall27 [118]4 years ago
4 0
n=3m+5 \\
n-2m=3 \\ \\
\hbox{substitute 3m+5 for n in the second equation:} \\
3m+5-2m=3 \\
m+5=3 \\
m=3-5 \\
m=-2 \\ \\
n=3m+5 \\
n=3 \times (-2)+5 \\
n=-6+5 \\
n=-1 \\ \\
(m,n)=(-2,-1)

The answer is C.
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qwelly [4]
<h3>Answer:</h3>

\large\boxed{\$1.17}

<h3>Step-by-step explanation:</h3>

In this question, we're trying to find how much Hermione spent on plums.

We know that:

  • Hermione bought 9/10 of a pound of plums
  • Plums cost $1.30 <em>per pound</em>

With the information above, we can solve the question.

Since we know that plums cost $1.30 per pound and Hermione bought 9/10 of a pound, we would multiply 1.30 by 0.90 in order to get the price Hermione bought the plums for. Hermione is pretty much paying 90% of the cost of a pound.

1.30*0.90=1.17

When you multiply, you should get 1.17

This means that Hermione spent $1.17 on 9/10 pound of plums.

<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
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3 years ago
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the answer is -1.5x+7
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3 years ago
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