3 years ago

The sum of x and 9 is divided by 2 that quantity is equal to 3x

Mathematics

1 answer:

nikitadnepr [17]3 years ago

8 0

The sum of x and 9 divided by 2 is equal to 3x

(x + 9)/2 = 3x

Note the equal sign, what you do to one side, you do to the other. First, multiply 2 to both sides

(x + 9)/2(2) = 3x(2)

x + 9 = 6x

Subtract x from both sides

x (-x) + 9 = 6x(-x)

9 = 5x

Isolate the x. Divide 5 from both sides

9/5 = 5x/5

x = 9/5

9/5 is your answer for x

hope this helps

You might be interested in

If your good in math please help me

Feliz [49]

Answer:

350.82

Step-by-step explanation:

To find the surface area, you must add up all of the areas of each shape of the prism in order to get the sum surface area.

The rectangle's area ( $lw$ ):

$7.21*14=100.94$

The triangle's area ( $\frac{1}{2}bh$ ):

$\frac{1}{2} (6)(8)$

$\frac{1}{2} (48)=24$

Now add up all the sides. (3 Rectangles, 2 Triangles.)

$100.94 + 100.94 + 100.94 + 24 + 24$

$=350.82$

The total surface area is 350.82 cm squared.

6 0

3 years ago

A line connecting a vertex of a scalene triangle with the midpoint of the opposite side is the

KatRina [158]

I'm pretty sure it's median

6 0

3 years ago

Help meeeee!!!!!! Please

Over [174]

Answer:

-1/11

Step-by-step explanation:

if this is one of the answer choices.

6 0

3 years ago

A function has the rule y= -2x+11

Anon25 [30]

Input is 4
so y=-2(4)+11
y=-8+11
y=11-8
y=3
Ans
(4,3)

4 0

3 years ago

Read 2 more answers

How to you get the mean in math

nydimaria [60]

The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.

5 0

3 years ago