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maksim [4K]
3 years ago
13

4(5n-7)=10n+2 9(x+3)=4x-3

Mathematics
1 answer:
lys-0071 [83]3 years ago
8 0
4(5n-7) = 10n+2\\20n-28=10n+2\\20n=10n+30\\10n=30\\n=3\\\\\\9(x+3)=4x-3\\9x+27=4x-3\\9x=4x-30\\5x=-30\\x=-6
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16.5 degrees below the starting temp, whatever that is. If its 0, then -16.5 degrees.

The first equation would be (.5)5-11=-8.5, because the metal has been cooling for 5 hours.

The device that 'aids' in the cooling would be -5-3=-8, because it is a separate variable that cools the metal, so the amount the device cools is independent of the natural cooling amount, and the equation is independent of the natural cooling equation.
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3 years ago
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A the front of her check only

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It's actually easier than it seems. if the tax is paid in equal payments every month and the total throughout a year (12 months) is $2,820, you have to find out how much they pay every month
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8 0
3 years ago
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Maru [420]

Answer:

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Step-by-step explanation:

Given the graphs of f(x) and g(x). we have to compare the slops of these two.

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As \frac{1}{2}

This shows that the

The slope of g(x) is less than the slope of f(x).

8 0
3 years ago
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Round 81.139 to the nearest tenth
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<em>If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up (+1).</em>


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