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3 years ago

Select all equations with infinitely many solutions..

1 answer:

8 0

B. 1/2(6x-12) = 3x -6 = 3(x-2)
D. 12x -18 + 2 = -16+12x
12x -16 = -16+ 12x

B and D are the answers
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F(x) = x^2 + 4x + 20 find the real roots. take your time if you want :)

s344n2d4d5 [400]

Answer:

No real roots

$x = -2 + 4i, x = -2 - 4i$

Step-by-step explanation:

Hello!

We can solve the quadratic by using the Quadratic Formula.

Standard form of a Quadratic: $ax^2 + bx + c = 0$

Quadratic Equation: $x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$

Given our Equation: $f(x) = x^2 + 4x + 20$

a = 1
b = 4
c = 20

Set the equation to 0 and solve using the formula.

<h3>Solve</h3>

$x = \frac{-b\pm\sqrt{b^2 - 4ac}}{2a}$
$x = \frac{-4\pm\sqrt{4^2 - 4(1)(20)}}{2(1)}$
$x = \frac{-4\pm\sqrt{16 - 80}}{2}$
$x = \frac{-4\pm\sqrt{-64}}{2}$
$x = \frac{-4\pm8i}{2}$
$x = -2 + 4i, x = -2 - 4i$

There are no real roots to the quadratic.

8 0

2 years ago

What value of a and b make the soulution of the equation x=2

lana [24]

Answer:

a=-9 b=-5

Step-by-step explanation:

a(3-x) = - 2x+b

a3 - ax = - 2x+b

a3 - 2a = - 4+b

If you take a=-9

-27+18=-4+b

b= -5

6 0

3 years ago

What is the standard deviation of this data?

earnstyle [38]

The answer is 23.2 I just entered the data into an online standard deviation calculator.

6 0

3 years ago

Is the graphed function linear?

OLEGan [10]

Answer:

No, because the curve indicates that the rate of

change is not constant.

Im 99.9 sure

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Help me out with this equation would be very helpful

Lisa [10]

Answer:

I think its C

Step-by-step explanation:

I could be wrong

3 0

3 years ago