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Mariulka [41]
3 years ago
15

Turn the verbal expression into an algebraic expression:

Mathematics
1 answer:
IgorLugansk [536]3 years ago
8 0

Answer: a - (9xb)

Step-by-step explanation:

"A number diminished"

Diminished means made smaller or less.

So a variable minus.....

"By 9 times a number"

"By" with (including the variable multipled with 9)

"9 times a number" 9 multipled by a variable in parenthesis.

So 9 times a variable.

I hope you got it right :)

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Factor the quadratic equation 0=15x squared + 39 x-18
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Answer:

The factors of given quadratic equation

<em>   </em>x = \frac{9}{15} and x = -2<em />

Step-by-step explanation:

<u><em>Explanation:-</em></u>

<em>Given quadratic equation 15x² +39 x -18 =0</em>

<em> The factors of 270 = 30 × 9</em>

<em>The quadratic equation 15x² +39 x -18 =0</em>

<em>                                    ⇒ 15 x² +30 x-9x -18=0</em>

<em>                                 ⇒ 15x(x+2) -9( x+2) =0</em>

<em>                                ⇒( 15x -9)(x+2) = 0</em>

<em>                       15x - 9=0    and  x+2 =0</em>

<em>                       15 x =9   and  x = -2</em>

<em>                       </em>x = \frac{9}{15} and x = -2<em />

<u><em></em></u>

3 0
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