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Hitman42 [59]
4 years ago
6

How solve this x+y=5 X-y=7

Mathematics
1 answer:
Misha Larkins [42]4 years ago
6 0
elimination\ methode\\\\\underline{+\left\{\begin{array}{ccc}x+y=5\\x-y=7\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ 2x=12\ \ \ \ \ |divide\ both\ sides\ by\ 2\\.\ \ \ \ \ \ \ \boxed{x=6}\\\\subtitute\ the\ value\ of\ x\ to\ the\ first\ equation:\\\\6+y=5\ \ \ \ |subtract\ 6\ from\ both\ sides\\\boxed{y=-1}\\\\Answer:\boxed{\left\{\begin{array}{ccc}x=6\\y=-1\end{array}\right}
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Harman [31]

Answer:

0.15

Step-by-step explanation:

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3 years ago
What is the volume of a cone-shaped popcorn cup that is 8 inches tall and 6 inches across at the base?
Alina [70]

The volume of cone shaped popcorn cup is 75.36 cubic inches.

According to the given question.

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2 years ago
Help please! math assignment
MArishka [77]

Answer:

The left side   5

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The slanted side  11

Step-by-step explanation:

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Combine like terms

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4 0
3 years ago
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therefore:
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3 years ago
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3 years ago
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