3 years ago

NEED HELP ASAP (Screenshot)

1 answer:

DIA [1.3K]3 years ago

3 0

i think it is x plus 2

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pishuonlain [190]

X is -17
$- 30 =5(x + 11) \\ - 30 = 5x + 55 \\ 5x = - 30 - 55 = - 85$
$x = \frac{ - 85}{5} = - 17$

good luck

4 0

3 years ago

Paraphin [41]

The zeros for the given equation are A. $x = {2 \pm \sqrt{13}}.$

Step-by-step explanation:

Step 1:

To solve for x in a polynomial equation, we use the formula

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}.$

Here a is the coefficient of $x^{2}$ , b is the coefficient of $x$ and c is the coefficient of the constant term.

In the given equation, $a = 1, b = -4, c = -9$ .

Step 2:

Substituting the values of a, b, and c in the equation, we get

$x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a} =\frac{-(-4) \pm \sqrt{(-4)^{2}-4 (1)(-9)}}{2 (1)} = \frac{4 \pm \sqrt{(16+36}}{2 }.$

$\frac{4 \pm \sqrt{(16+36}}{2 } = \frac{4 \pm \sqrt{(52}}{2 } = \frac{4 \pm2 \sqrt{(13}}{2 }= {2 \pm \sqrt{13}}.$

So the answer is option A. $x = {2 \pm \sqrt{13}}.$

3 0

4 years ago

hammer [34]

The story is telling who goes to the beach and at what time

8 0

4 years ago

Lapatulllka [165]

Answer:

$(3x-5-7x^{2} )-(-2+6x^{2} -5x)$

$step\:1: 3x-5-7x^{2} +2-6x^{2} +5x$

$step\:2:(-7x^{2} -6x^{2} )+(3x+5x)+[(-5+2)]$

$step\:3:-13x^{2} +8x-3$

<u>OAmalOHopeO</u>

7 0

3 years ago

aksik [14]

I hope this helps you

8 0

3 years ago