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Mrac [35]
3 years ago
15

For the following system, use the second equation to make a substitution for x in the first equation.

Mathematics
2 answers:
LenaWriter [7]3 years ago
5 0

Answer:

Replace x  with  0  and simplify.x,x+5y- 10=0, x = 2 y − 8

Step-by-step explanation:


Gennadij [26K]3 years ago
3 0

Answer:

The resulting equation is 2y-8 + 5y - 10 = 0

Step-by-step explanation:

For the following system, use the second equation to make a substitution for x in the first equation.

x + 5y - 10 = 0 first equation

x = 2y - 8  second equation

Now substitute the second equation in first equation

Replace x with 2y-8 in first equation

x + 5y - 10 = 0

2y-8 + 5y - 10 = 0

The resulting equation is 2y-8 + 5y - 10 = 0

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Varvara68 [4.7K]

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x = -3

Step-by-step explanation:

Step 1: Simplify signs

3x + 7 = -2

Step 2: Subtract 7 on both sides

3x = -9

Step 3: Divide both sides by 3

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kifflom [539]

we'd do the same as before on this one as well.

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Step-by-step explanation:

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ludmilkaskok [199]

total bill before any discounts $13.

she is a student, so she gets 20% off.

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so she's really getting 20% + 5% off, namely 25% off her bill.

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{25\% of 13}}{\left( \cfrac{25}{100} \right)13\implies 3.25}~\hfill \stackrel{\textit{bill with all discounts}}{13-3.25\implies 9.75}

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