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lapo4ka [179]
3 years ago
15

Solve for x, when y = 5. 9x + 2y = 10​

Mathematics
1 answer:
Artist 52 [7]3 years ago
6 0
  • Answer:

<em>x = 0</em>

  • Step-by-step explanation:

<em>Hi there ! </em>

<em>9x + 2y = 10</em>

<em>replace y = 5</em>

<em>9x + 2×5 = 10</em>

<em>9x + 10 = 10</em>

<em>9x = 10 - 10</em>

<em>9x = 0</em>

<em>x = 0 </em>

<em>Good luck !</em>

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Rewrite the expression $6j^2 - 4j 12$ in the form $c(j p)^2 q$, where $c$, $p$, and $q$ are constants. What is $\frac{q}{p}$
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Rewrite the expression  6j^2 - 4j + 12$ in the form $c(j + p)^2 + q$, where $c$, $p$, and $q$ are constants. What is $\frac{q}{p}$

The ratio of \frac{q}{p}  = - 34

How to solve such questions?

Such Questions can be easily solved just by some Algebraic manipulations and simplifications. We just try to make our expression in the form which question asks us. This is the best method to solve such questions as it will definitely lead us to correct answers. One such method is completing the square method.

Completing the square is a method that is used for converting a quadratic expression of the form ax^{2} + bx + c to the vertex form

a(x - h)^{2} + k. The most common application of completing the square is in solving a quadratic equation. This can be done by rearranging the expression obtained after completing the square: a(x + m)^{2} + n, such that the left side is a perfect square trinomial

$6j^2 - 4j +12$

=  $6(j^2 - \frac{2}{3} j )+12$

= $6(j^2 - \frac{2}{3} j  +  \frac{1}{9}  )+\frac{102}{9}                   (Completing Square method)

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Learn more about completing the square method here :

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