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ElenaW [278]
3 years ago
7

2x – 3y = 17 –3x + y = –1 solve by elimination

Mathematics
1 answer:
Ad libitum [116K]3 years ago
6 0

Answer:

(-2,-7)

alternatively

x: -2

y: -7

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A = √7 + √c and b = √63 + √d where c and d are positive integers.
mrs_skeptik [129]

Answer:

\displaystyle a:b=\frac{1}{3}

Step-by-step explanation:

<u>Ratios </u>

We are given the following relations:

a=\sqrt{7}+\sqrt{c}\qquad \qquad[1]

b=\sqrt{63}+\sqrt{d}\qquad \qquad[2]

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From [3]:

9c=d

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b=\sqrt{63}+\sqrt{9c}

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b=\sqrt{9*7}+\sqrt{9c}

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Factoring:

b=3(\sqrt{7}+\sqrt{c})

Find the ration a:b:

\displaystyle a:b=\frac{\sqrt{7}+\sqrt{c}}{3(\sqrt{7}+\sqrt{c})}

Simplifying:

\boxed{a:b=\frac{1}{3}}

3 0
3 years ago
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Andreyy89
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m=(4-2)/(2-(-3))
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Therefore the slope is 2/5.
5 0
3 years ago
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