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myrzilka [38]
3 years ago
11

Solve for x: 9x – 7 = 5x + 21

Mathematics
2 answers:
denis23 [38]3 years ago
8 0

Answer:

x=7

Step-by-step explanation:

add 7 to both sides

9x=5x+28

subtract 5x from both sides

4x=28

divide both sides by 4

x=7

tiny-mole [99]3 years ago
4 0

Answer:

X=7

Step-by-step explanation:

So first you want x on one side so you so subtract 5x from both sides

Then your equation is 4x-7=21

Because you want x by itself, you add 7 to each side because of additive inverse

The equation is now 4x=28

The last step is to divide 4 from each side and that leaves us with 7

x=7

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How many pounds are equal to 3tons
aleksklad [387]

Answer:

6000

Step-by-step explanation:

2000 pounds equals 1 ton

6 0
3 years ago
8% of the employees at a shop work part time. If there are 4 part time employees at the shop, how many employees are there in to
Murljashka [212]

Answer:

50 employees

Step-by-step explanation:

We can set up a proportion which would be

4/x = 8/100

This shows 4 out of x people is the same as 8% of 100.

We divide 100 by 8, and then multiply by 4 to get 50.

We can check this by plugging 50 into the proportion.

4/50 = 0.08

8/100= 0.08

There are 50 total employees at the shop.

4 0
4 years ago
(3x^2)(4x)=12x^3 is 3x^2 a factor of 12x^3
Diano4ka-milaya [45]

Answer:

(3x2 + 1) • (4x - 1)

Step-by-step explanation:

Equation at the end of step  1  :

(((12 • (x3)) -  3x2) +  4x) -  1

Equation at the end of step  2  :

(((22•3x3) -  3x2) +  4x) -  1

Checking for a perfect cube :

12x3-3x2+4x-1  is not a perfect cube

Trying to factor by pulling out :

Factoring:  12x3-3x2+4x-1

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1:  4x-1

Group 2:  12x3-3x2

Pull out from each group separately :

Group 1:   (4x-1) • (1)

Group 2:   (4x-1) • (3x2)

              -------------------

Add up the two groups :

              (4x-1)  •  (3x2+1)

Final result :

(3x2 + 1) • (4x - 1)

6 0
3 years ago
Ray and line segment difference
Ratling [72]

Answer:

A line segment is part of a line that has two endpoints and is finite in length. A ray is a line segment that extends indefinitely in one direction.

Step-by-step explanation:

hope it helps you and give me a brainliest

7 0
2 years ago
Read 2 more answers
There are two factors of -36 such that one factor is 11 less than half of the other factor. Choose all the pairs of these factor
Anna [14]
Last choice

X=4
.5(4)-11=-9
2-11=-9 yes
7 0
3 years ago
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