Points, in case you need to ask a question.

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Answer 1

Answer: Is anyone good at 8th grade math? Rational numbers; I need help

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Help, 3+7x=12, what is x?

Answers

So just your normal equation.
We need to isolate x alone.
First lets write out our equation
3 +7x = 12

Lets do this step by step.

first subtract 3 from both sides.
3 + 7x = 12
-3 = -3 it cancels out on the left side and we solve on the right side.
*************
7x = 9

second we divide both sides by 7
7x = 9
÷7 = 7 we got the x alone and we just write 9/7 as our answer.

x = 9/7

Or as a decimal.
9/7 could be 1.28571428571429

Either will work.
x = 9/7
or
x = 1.28571428571429

Have a nice day. :)

Solve the equation. x/2 + 2x/3 =5

Answers

x=30/70 it is simple if you think about it

A 12-foot ladder is leaning against a wall. The bottom of the ladder is 5 feet away from the bottom of the wall. Approximately how high up the wall does the top of the ladder reach?

A.
2.4 feet

B.
7.0 feet

C.
13.0 feet

D.
10.9 feet
i think B not i'm not 100% sure plz help me and would u plz explain how u got the answer thank u :)

Answers

The ladder is the hypotenuse.
One of the legs is 5 feet.
We need to find the height.

a^2 + 5^2 = 12^2
a^2 + 25 = 144
a^2 = 144 - 25
a^2 = 119
a = √119

a ≈ 10.9 feet

The ladder reaches up 10.9 feet.

Answer:

that is correct i took the test 10.9

Step-by-step explanation:

Need help with 3,4 and 6

Answers

Answer:

The graphs are attached.

Combine like terms. 9 + 3x – 9x + 16a. 18x + 3x + 16
b. 19x
c. 25 – 6x
d. 3x + 16

Answers

9 + 3x - 9x + 16
Like terms are terms that have the same variable and powers.

9 and 16 are like terms. They don't have any other variables and can easily be solved.

9 + 16 = 25

3x and -9x are like term. They both have the same variable and powers, x. The coefficients, 3 an d-9, don't have to match as long as the variable and powers are the same.

3x - 9x = -6x

9 + 3x - 9x + 16 ⇒ 25 - 6x Choice C.

3x and -9x are like term. They both have the same variable and powers, x. The coefficients, 3 an d-9, don't have to match as long as the variable and powers are the same.

3x - 9x = -6x

9 + 3x - 9x + 16 ⇒ 25 - 6x Choice C.

Find the area of the polygon with the coordinates (1, 2), (3, 2), (3, 0), and(1,0).
2 sq. units
8 sq. units
4 sq. units
16 sq. units

Answers

Answer:

4 sq. units

Step-by-step explanation:

Since the polygon has 4 vertices, hence the polygon is a quadrilateral with four sides and four angles.

We can see that for this polygon, opposite sides are parallel and equal to each other.

To find the area of the polygon, we have to first get the length of the polygon and then the width of the polygon, hence:

The length is the distance between (1, 2) and (3, 2):

$length=√((3-1)^2+(2-2)^2) =2\ units\n$

The breadth is the distance between (3, 2) and (3, 0):

$length=√((3-3)^2+(0-2)^2) =2\ units\n$

Since length = breadth, hence this is a square.

Area= length * breadth = 2 * 2 = 4 sq. units

Other Questions

If f(2)=pi+7 then f^-1(pi+7)=?

The value of x that satisfies the equation 2/3x + 4 = 3/2(x-4) is?

Product of 5 and the quantity 3 plus z

Will give correct answer the brainliest !!!