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IRINA_888 [86]
3 years ago
6

How do I use substitution to solve

Mathematics
2 answers:
nekit [7.7K]3 years ago
4 0
<span>The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.</span>
Olin [163]3 years ago
3 0
We can substitute y in the second equation with the first equation since y = y. Thesolution<span> of the linear </span>system<span> is (1, 6). You can </span>use<span> the </span>substitution<span> method even if both equations of the linear </span>system<span> are in standard form. Just begin by </span>solving<span> one of the equations for one of its variables.</span>
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For this case, what you should do is calculate the surface area of the figure.
 We have then:
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 A1 = (1/2) * (7) * (12)
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 Substituting values:
 A = 2 (42) + 2 (12.5) + (7)
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 Answer:
 
the amount of cardboard needed to make a box for a single slice of pizza is:
 
A = 116 in ^ 2
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