This is for middle school 9th grade please help me :)

Mathematics

1 answer:

saw5 [17]2 years ago

4 0

Answer:

1 because it goes up 3 over 3 3/3=1

Step-by-step explanation:

You might be interested in

Solve for x.

Ivahew [28]

ANSWER

$x=\frac{2-\sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

We have

$3x^2-4x-2=0$

Since we cannot factor easily, we complete the square.

Adding 2 to both sides give,

$3x^2-4x=2$

Dividing through by 3 gives

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

Adding $(-\frac{2}{3})^2$ to both sides gives

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

The expression on the Left Hand side is a perfect square.

$(x-\frac{2}{3})^2= \frac{2}{3}+\frac{4}{9}$

$\Rightarrow (x-\frac{2}{3})^2= \frac{10}{9}$

$\Rightarrow (x-\frac{2}{3})=\pm \sqrt{\frac{10}{9}}$

$\Rightarrow (x)=\frac{2}{3} \pm {\frac{\sqrt{10}}{3}$

Splitting the plus or minus sign gives

$x=\frac{2- \sqrt{10}} {3}$

or

$x=\frac{\sqrt{10}+2} {3}$

3 0

2 years ago

Read 2 more answers

How many solutions does y=(2-7)^2

vladimir1956 [14]

I believe the equation y=(2-7)^2 has 1 solution which is y=25

3 0

2 years ago

Solve -8 = 2y – 2. Show your work and how to check your solution.

Mashcka [7]

Answer: y = -3

Explanation:

-8 = 2y - 2
-2y = -2 + 8
y = 6/-2
y = -3

4 0