All categories

2 years ago

Solve the equation 4x^2 + 24x + 13 = 2x^2+ 6x to the nearest tenth.

Mathematics

1 answer:

Licemer1 [7]2 years ago

6 0

Answer:

-0.8 and -8.2

Step-by-step explanation:

To solve a quadratic you first need to have one side of the equation equal to zero (because x-intercepts are when y is zero).

4x^2 + 24x + 13 = 2x^2 + 6x

2x^2 + 18x + 13 = 0

Then you can use the quadratic formula to solve for x. You will then come to

-18 ± sqrt(220) / 4

This will simplify out (rounding to the nearest tenth) to -0.8 and -8.2

You might be interested in

What is the Coefficient in<br> 1/4 N + 15

olga_2 [115]

Answer:

1/4 N + 15

the coefficient is "n" it is a letter variable associated with a term

Step-by-step explanation:

7 0

2 years ago

Y= - x+2 Y=3x-4<br> Estimate the solution to the system of equations

IrinaVladis [17]

Answer:

$x=\frac{3}{2}\\ y=\frac{1}{2}$

Step-by-step explanation:

$y=-x+2\\y=3x-4$

Let's solve one of them for x.

$y=3x-4$

Add 4

$y+4=3x$

Divide by 3.

$x=\frac{y+4}{3}$

Now, plug the value of y in the formula, or you can plug the value of x in the other equation. I'll take this one.

$x=\frac{y+4}{3}$

$x=\frac{(-x+2)+4}{3}$

$x=\frac{-x+2+4}{3}$

$x=\frac{-x+6}{3}$

Multiply by 3 to get rid of the denominator.

$3x=-x+6$

add x

$3x+x=6$

Combine like terms;

$4x=6$

Divide by 4.

$x=\frac{6}{4}$

Simplify.

$x=\frac{3}{2}$

Now that you found the value of x, replace it in any of the equations to find y.

$y=-x+2\\y=-(\frac{3}{2})+2\\ y=-\frac{3}{2}+2$

$y=\frac{-3+2*2}{2} \\y=\frac{-3+4}{2} \\y=\frac{1}{2}$

Proof:

$y=3x-4\\\frac{1}{2}=3(\frac{3}{2})-4\\\frac{1}{2}=(\frac{9}{2})-4$

$\frac{1}{2}=\frac{9-4*2}{2}$

$\frac{1}{2}=\frac{9-8}{2}$

$\frac{1}{2}=\frac{1}{2}$

8 0

3 years ago

Im leaving brainly first to this question gets brainliest i giving away all my points so i have only have one question

ehidna [41]

Answer:

gta v

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

17-1.2+ show me how you get the answer 15.8

SashulF [63]

First do 17 - 1 to get 16. Then subtract 0.2 from 16.0 to get 15.8.

3 0

3 years ago

Each participant in a charity lottery is given a unique number. The winner is chosen by picking one number from a bag of red bal

max2010maxim [7]

35 ceremonies for at least come around

3 0

3 years ago

Read 2 more answers