Ask question

Ask question

All categories

3 years ago

10

Can someone please help me with this problem? It involves quadratic formula and the answer is (-2,-3) but anytime I try to get t

hat answer I get any answer but that

1 answer:

Anvisha [2.4K]3 years ago

3 0

Answer:

See explanation

Step-by-step explanation:

$2x^2+10x+12=0$

$x=\dfrac{-10\pm\sqrt{100-96}}{4}=\dfrac{-10\pm 2}{4}=\dfrac{-8}{4},\dfrac{-12}{4}=-2,-3$

Hope this helps!

You might be interested in

Which of these equations has a graph that is tangent to the x-axis at one of its intercepts? Choose all the polynomials that hav

Alika [10]

I think y=x2+6x+9 hope this helps

3 0

3 years ago

Read 2 more answers

Find the missing side each triangle.round your answers to the nearest tenth if necessary

Vladimir [108]

Yo just do a squared plus b squared plus c squared

4 0

3 years ago

Which set of points does not represent a function

Maurinko [17]

If it is a bunch of dots on a graph, then the answer will be the one that has two sets of dots on the same vertical line (the y axis). so if there are two dots right above and below eachother, that graph is the correct answer.

8 0

3 years ago

I need the Combination( probability) of this problem.

coldgirl [10]

Check attached image file.

8 0

3 years ago

Pls help me in these two little exercises about the slope.

den301095 [7]

Answer:

3) $y=\dfrac35x+\dfrac25$

4) a) $y=-2x+7$

b) $y=\dfrac12x+\dfrac92$

Step-by-step explanation:

<u>Exercise 3</u>

$-3x + 5y = 2$

$\implies 5y = 3x + 2$

$\implies y=\dfrac35x+\dfrac25$

<u>Exercise 4</u>

a) If L2 is parallel to L1, it has the same slope (gradient) ⇒ $m = -2$

If L2 passes through point (3, 1):

$y-y_1=m(x-x_1)$

$\implies y-1=-2(x-3)$

$\implies y=-2x+7$

So L2 = L1

b) If L3 is perpendicular to L1, then the slope of L3 is the negative reciprocals of the slope of L1 ⇒ $m = \dfrac12$

If L3 passes through point (-5, 2):

$y-y_1=m(x-x_1)$

$\implies y-2=\dfrac12(x+5)$

$\implies y=\dfrac12x+\dfrac92$

4 0

3 years ago

Read 2 more answers