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notsponge [240]
3 years ago
7

Nine times the sum of a number and two is forty five. What is the number?

Mathematics
1 answer:
kondaur [170]3 years ago
6 0

Answer:

3

Step-by-step explanation:

9 x (N + 2)   = 45

9N + 18       = 45

9N              = 27  

N                 = 3  

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3(5x+2)=2(3x-6)<br> help i need to show work and I have no idea how to do this
tester [92]

Answer: its −2

Step-by-step explanation:

3*(5*x+2)-(2*(3*x-6))=0  

Step by step solution :

STEP

1

:

STEP

2

:

Pulling out like terms

2.1     Pull out like factors :

  3x - 6  =   3 • (x - 2)  

Equation at the end of step

2

:

 (3 • (5x + 2)) -  6 • (x - 2)  = 0  

STEP

3

:

Equation at the end of step 3

 3 • (5x + 2) -  6 • (x - 2)  = 0  

STEP

4

:

STEP

5

:

Pulling out like terms

5.1     Pull out like factors :

  9x + 18  =   9 • (x + 2)  

Equation at the end of step

5

:

 9 • (x + 2)  = 0  

STEP

6

:

Equations which are never true

6.1      Solve :    9   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation:

6.2      Solve  :    x+2 = 0  

Subtract  2  from both sides of the equation :  

                     x = -2

One solution was found :

x = -2

8 0
4 years ago
Read 2 more answers
Simplify. Write the expression using only positive exponents.<br> 7g⁻²/g⁴
Arte-miy333 [17]
Negative exponent will go down to become positive
7/g²g⁴=7/g⁶
6 0
4 years ago
If f(x) = 3x 2 - x, find f(-2). <br> A: 10<br> B: 14<br> C: 38
AleksAgata [21]

Answer:

A

Step-by-step explanation:

3 times -2 is -6

-6 times 2 is -12

-12- (-2) is 10

4 0
3 years ago
What is the solution to the equation?
12345 [234]
2q+18=-5q-3
2q+5q=-3-18
7q=-21
q=-3
6 0
3 years ago
PLEASE anyone I need help​
Reptile [31]

Answer:

1 34

2 45

3 23

Step-by-step explanation:

8 0
3 years ago
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