All categories

3 years ago

-4r-11=4r+21 pls help

Mathematics

2 answers:

Masja [62]3 years ago

8 0

-4r-11=4r+21

Move 4r to the other side

Sign changes from +4r to -4r

-4r-4r-11=4r-4r+21

-4r-4r-11=21

-8r-11=21

Move -11 to the other side

Sign changes from -11 to +11

-8r-11+11=21+11

-8r=21+11

-8r=32

Divide both sides by -8

-8r/-8=32/-8

Answer: r=-4

gizmo_the_mogwai [7]3 years ago

4 0

Answer:

r=-4

Step-by-step explanation:

-4r-11=4r+21

Subract 4r from each side.

-4r-4r-11=21

-8r-11=21

Add 11 to each side.

-8r=21+11

-8r=32

Divide both sides by -8.

r= $\frac{32}{-8}$

r=-4

You might be interested in

What are the solution(s) to the quadratic equation 9x2 = 4?

Lunna [17]

Multiply 9 by 2

18 = 4

Then subtract 4 from both sides

18 - 4 = 0 will become

14 = 0

Since 14 ≠ 0, there are no solutions

3 0

4 years ago

How is 3×3×3×3×3×3×3 written in exponential form

Julli [10]

Answer:

Step-by-step explanation:

3 * 3 * 3 * 3 * 3 * 3 * 3 = $3^{7}$

7 0

3 years ago

Read 2 more answers

The table below displays the purchases that Graphic DesignWorks made from

Maurinko [17]

Answer:

a.

Step-by-step explanation:

please make me a happy with brainleist answer

7 0

3 years ago

Read 2 more answers

-1 3/5 divided by -2/3 written as mixed number

blondinia [14]

First, you must change all of this into improper fractions, like shown below.
$- \frac{8}{5}\div - \frac{2}{3} =$
Now you must change the sign.
$- \frac{8}{5}* - \frac{2}{3} =$
Then we must reciprocalize 2/3.
$- \frac{8}{5}* - \frac{3}{2} =$
Now we multiply, to get 2 4/10.

8 0

3 years ago

There are five marbles in

zlopas [31]

Answer:

Step-by-step explanation:

2 to 5 or 2:5

2 to 3 or 2:3

8 0

3 years ago

-4r-11=4r+21 pls help ​

-4r-11=4r+21 pls help