1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sladkih [1.3K]
3 years ago
5

X minus 12 is 30 what’s the answer

Mathematics
2 answers:
dmitriy555 [2]3 years ago
4 0
<h2> X - 12 = 30</h2><h2 />

To solve for <em>x</em> in this equation, we want to get <em>x</em> by itself on the left side of the equation. Since 12 is being subtracted from <em>x</em>, to get <em>x</em> by itself, we need to add 12 to the left side of the equation. If we add 12 to the left side, we must also add 12 to the right side.

On the left side, -12 and +12 cancel each other out so we are simply left with <em>x</em>. On the right side, 30 + 12 is 42 so we have <em>x = 42</em>.

It's important to understand that we can check our answer by substituting 42 back into the original equation.

So we have (42) - 12 = 30.

42 - 12 is 30 so we have 30 = 30 which is a true statement so our answer, <em>x = 42</em>, is correct.

Helen [10]3 years ago
3 0

Answer:

x=42

Step-by-step explanation:

x-12=30

x=30+12

x=42

You might be interested in
It takes 4 hours and 15 minutes to fly from Orlando, Florida, to Boston, Massachusetts. The distance between the two cities is 1
3241004551 [841]

Answer:

262.12mph and 419kph

Step-by-step explanation:

Given: It takes 4 hours and 15 minutes to fly from Orlando, Florida, to Boston, Massachusetts. The distance between the two cities is 1114 miles

To Find: the average speend of the plane in miles per hour, If every mile is approximately 1.6 kilometers, the speed of the airplane in kilometers per hour

Solution:

Distance between Orlando,Florida and Boston, Massachusetts=1114 \text{miles}

Time taken to cover the distance =4\text{hours} and 15\text{minutes}

We know that,

\text{Average Speed}=\frac{\text{Total Distance}}{\text{Total time}}

                                          =\frac{1114}{\frac{17}{4}}

                                          =\frac{1114\times4}{17}

                                          =262.12 \text{mph}

It is given that,

1\text{mile}=1.6\text{kilometer}

therefore,

1\text{mph}=1.6\text{kph}

Speed Of plane in Kilometers per hours =\text{speed in mph}\times1.6

                                                                   419.4\text{kph}

Speed of in miles per hour  is 262.12 \text{mph} and Speed in kilometer per hour  419.4\text{kph}

3 0
4 years ago
Miss Stoner purchase a new computer for $1,150 at the Apple store if sales tax is 7.5% what is the total of her purchase
Thepotemich [5.8K]

Answer:

$1236.25

Step-by-step explanation:

We can convert the percentage to 0.075 to make it easier. Then, multiply 1150 by 1.075 to get 1236.25. We add the one because we need to include the initial $1150.

4 0
3 years ago
Please help my sister is being super mean and my parents are working please help
kipiarov [429]

Answer:

2nd option on the top right

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Ralph is 3 times as old as Sarah. in six years, Ralph will be only twice as old is Sarah will be then. find Ralphs age now.
Phantasy [73]
First, we start with the equation that the problem told us, which is:

R + 6 = 2 * (x + 6)

Then, we distribute the two:

R + 6 = 2x + 12

Now, we put R on its own side.

R = 2x +6

So, the answer must be C, 2x + 6
8 0
3 years ago
Read 2 more answers
Please please help............
maksim [4K]
Part A Simplify:

Answer is - 12b + 6c + 18



Part B

Answer is (D)

Factor/simplify
- 12b + 6c + 18

6(- 2b + c + 3)
= (6)(- 2b + c + 3)
= (6)(- 2b ) + (6)(c) + (6)(3)
= - 12b + 6c + 18

therefore,- 12b + 6c + 18; Factored in GCF is 6(-2b + c + 3)





- 12b + 6c + 18
reorder the terms
18 + 12b + 6c

Factor out the GCF " 6"
6(3 + 2b + c)


Final Result:
6(3 + 2b + c)



Hope this helps
6 0
4 years ago
Other questions:
  • What is 28- 12.5% decrease???
    9·1 answer
  • What is the inequality
    14·1 answer
  • Which two numbers differ by 46
    14·1 answer
  • PLEASE HELP 30 POINTS TO WHOEVER HELPS I NEED IT QUICK PLEASE HELP
    14·2 answers
  • A school janitor has mopped
    7·2 answers
  • A copy machine makes 133 copies in 4 minutes and 45seconds.how many copies does it make per minute ?
    9·1 answer
  • Solve for x. Round your answer to the nearest tenth.<br> 42<br> 37<br> X=<br> units
    14·1 answer
  • Two-thirds of a class are boys. If there are 12 boys, then<br> how many girls are in the class?
    11·1 answer
  • I need help with number 13, 14, 15 and 16 please
    8·1 answer
  • Which composition of similarity transformations maps polygon ABCD to polygon A’B’C’D’
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!