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ArbitrLikvidat [17]
2 years ago
6

3y + 2x - 10 = 0 find m​

Mathematics
1 answer:
Hitman42 [59]2 years ago
6 0

Step-by-step explanation:

3y + 2x - 10 = 0

in standard form

2x + 3y -10=0

||

as (ax + by - c = 0)

m = -a/b

= -2/3

or

3y + 2x - 10 = 0

make y subject

y = -2/3x + 10/3

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Which equation is equivalent to √x^2+81 = x+10
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Keywords:

<em>equation, operations, equivalent, binomial, square root </em>

For this case we have an equation in which we must apply operations to rewrite it in an equivalent way. We must start by raising both sides of the equation to the square. Thus, we eliminate the square root of the left side of equality and finally solve the binomial of the right side of equality.

So we have:

\sqrt {x ^ 2 + 81} = x + 10\\(\sqrt {x ^ 2 + 81}) ^ 2 = (x + 10) ^ 2\\x ^ 2 + 81 = (x + 10) ^ 2

By definition:(a + b) ^ 2 = a ^ 2 + 2ab + b ^ 2

x ^ 2 + 81 = x ^ 2 + 2 (x) (10) + (10) ^ 2\\x ^ 2 + 81 = x ^ 2 + 20x +100

Thus, x ^ 2 + 81 = x ^ 2 + 20x +100 is equivalent to \sqrt {x ^ 2 + 81} = x + 10

Answer:

x ^ 2 + 81 = x ^ 2 + 20x +100

Option D

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