3 years ago

6. What is the measure of x? B (4x - 1) (2x9) ) 88" (3x +19) 110° E A-45 B.5 C.5 D. 35

Mathematics

1 answer:

Helga [31]3 years ago

8 0

It would be D :) here’s a picture of how i did it

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How to factor x^2-2x-15

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Step-by-step explanation:

Given

x² - 2x - 15

Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (- 2)

The factors are - 5 and + 3, since

- 5 × 3 = - 15 and - 5 + 3 = - 2, thus

(x - 5)(x + 3) ← in factored form

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Alex17521 [72]

$\left[\begin{array}{ccc}ax+by=r\\\\-bx+cy=s\end{array}\right]$

Isolate x for $ax+by=r$

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Subsititute $x= \frac{r-by}{a}$

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Isolate r for : $-b \frac{r-by}{a}+cy=s$

$r=- \frac{as-acy-b^2y}{b} ; a \neq 0;b \neq 0$

For x : $\frac{r-by}{a}$

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$r= -\frac{as-acy-b^2y}{b}$ and <span> $x = \frac{cy-s}{b}$
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3 years ago

6. What is the measure of x? B (4x - 1) (2x9) ) 88" (3x +19) 110° E A-45 B.5 C.5 D. 35​

6. What is the measure of x? B (4x - 1) (2x9) ) 88" (3x +19) 110° E A-45 B.5 C.5 D. 35