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ELEN [110]
3 years ago
7

Please help me with this ​

Mathematics
2 answers:
Ahat [919]3 years ago
8 0
B, x=1

Explanation
14+7=21

dezoksy [38]3 years ago
3 0

Answer:

x=1

Step-by-step explanation:

given

21=14+7x

our objective is to get the variable (x) by itself

To do so we use inverse operations

so to get rid of the 14 we subtract 14 but whatever you do to one side you have to do to the other so we subtract each side by 14

14-14 cancels out

21-14=7

now we have

7x=7

now we want to get rid of the 7

to do so we divide by 7 but remember whatever we do to one side we have to do to the other side so we divide each side by 7

7/7 cancels out

7/7=1

we're left with x=1

hope this helps!

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Jillian bought a sweater for $ 8 less than half of its original price. She paid $ 18 for the sweater. How much is the original p
just olya [345]
Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

Let the original price = x

To begin with, we will convert the word problem into an equation as displayed below:

( x / 2 ) - 8 = 18

Now, to find the original price we will simply make ( x ) the subject and solve accordingly as displayed below:

( x / 2 ) - 8 = 18
( x / 2 ) = 18 + 8
( x / 2 ) = 24
x = 24 × 2
x = $48

CHECKING THE ANSWER:

In order to check if the answer is correct, simply substitute the value of x into the original equation and solve. If the left-hand and right-hand side are equivalent, then the answer is correct as displayed below:

( x / 2 ) - 8 = 18
( 48 / 2 ) - 8 = 18
24 - 8 = 18
18 = 18

Therefore, the answer is:

x = $48
4 0
3 years ago
The measure of an angle is 144.5 degrees what measure of it supplementary angle?<br><br>​
kobusy [5.1K]

Answer:

180-144.5= 35.5

Explanation:

Supplementary means two angles add up to 180 degrees.

so 180-144.5= 35.5

Hope it helps you.

7 0
3 years ago
Which expression is equivalent to 3(7x – 5)?
Mamont248 [21]

Answer:

21x - 15

Step-by-step explanation:

if this answer helped u and u liked it, pls mark as brainliest! thx!

3 0
3 years ago
Distribute <br>(x-6)(x-7)<br><br>a) x^2-13x-15<br>b) x^2-13x+42<br>c) x^2+x+42<br>d) x^2+x-15​
Sidana [21]

Answer:

B. x² - 13x + 42

Step-by-step explanation:

7 0
2 years ago
Which expression has a positive value?
Leokris [45]

Answer:

im pretty sure C. 3(-64-8) + 25 will give you a positive value

3 0
3 years ago
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