Is (3,-2) a solution to the system below? How do you know?
1 answer:
Step-by-step explanation:
you know by using the x and y coordinates of the point in the equations and see, if both equations are still true.
if yes, it was a solution, and if just only one is false, then it was not a solution.
(3, -2) in
y + 4x = 10
5x - y = 13
so,
-2 + 4×3 = 10
-2 + 12 = 10
10 = 10 true
5×3 - (-2) = 13
15 + 2 = 13
17 = 13 false
so, it was NOT a solution.
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Answer:
Hmm...A would be 1 and B would be 3x.
Step-by-step explanation:
Hi,
First calculate how much chocolate for 1 dollar.
\frac{2}{3} = 0.67 \\ 0.67 \div 5 = 0.134
Then multiply by four to get amount of chocolate for four dollars.
0.134 \times 4 = 0.536
Answer: 0.536
Hope this helps.
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Answer:
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Step-by-step explanation:
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