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drek231 [11]
3 years ago
5

17 which equation has the same solutions as x6x-750?1) (x+3) 213)

Mathematics
1 answer:
Ilya [14]3 years ago
8 0
Hello,

x²+6x-7=0
==>x²+2*3x+3²-9-7=0
==>(x+3)²-16=0

Answer D

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What would the answer be???
Korolek [52]

Answer:

The solution is obtained by adding the two equations.

The solution is: (x, y) = ($ - \frac{2}{3} $, $ - \frac{7}{3} $)

Step-by-step explanation:

We are given two equations with two variables. The strategy is to eliminate one variable and solve for both the variables.

The two equations are:

$ 7x + y = - 7 \hspace{15mm} \hdots (1) $

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Adding both the equations, we get:

$ 7x + 2x + y - y = - 7 + 1 $

$ \implies 9x = - 6 $

$ \implies x = - \frac{2}{3} $

Substituting the value of 'x', we get the value of y.

We substitute in (2). [Can be substituted in any equation].

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$ \imples y = 2\bigg(\frac{-2}{3}\bigg) - 1 $

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$ \implies y = -\frac{7}{3} $

So, we get the corresponding values of x and y which is the solution of the two equations.

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3 years ago
Keira is reviewing her checking account statement from the bank. Her starting balance and transactions are listed.
Tatiana [17]

Answer:

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Read 2 more answers
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