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stealth61 [152]
2 years ago
12

Pls help! will give brainliest to whoever answers first correctly! (70 points)

Mathematics
2 answers:
Nookie1986 [14]2 years ago
8 0

Answer:

#1

Step-by-step explanation:

I am just guessing but its probably #1

n200080 [17]2 years ago
3 0

Answer:

the answer is the 1st one

Step-by-step explanation:

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Find the solution to the system of equations x + y = 9 and x - y = -1.
Galina-37 [17]

Answer:

(4, 5 )

Step-by-step explanation:

x + y = 9 → (1)

x - y = - 1 → (2)

adding the 2 equations term by term will eliminate y

2x + 0 = 8

2x = 8 ( divide both sides by 2 )

x = 4

substitute x = 4 into either of the 2 equations and solve for y

substituting into (1)

4 + y = 9 ( subtract 4 from both sides )

y = 5

solution is (4, 5 )

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2 years ago
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slega [8]

Answer:

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Step-by-step explanation:

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motikmotik
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2 years ago
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Does anyone mind helping me with this? It seems simple enough.
Yanka [14]

Answer:

x = 4

Step-by-step explanation:

It is given that \sqrt{(x - 3)} = \sqrt{x} + 3, and we have to solve the given equation for x.

Now, we have \sqrt{(x - 3)} = \sqrt{x} + 3

Squaring both sides we get  

[\sqrt{(x - 3)}] ^{2} = [\sqrt{x} + 3]^{2}

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⇒ 6√x = - 12

⇒ √x = -2

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⇒x = 4 (Answer)

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