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Finger [1]
3 years ago
8

Find the value of x. (13x+12) 129 X= PLSS HELP

Mathematics
2 answers:
Dmitriy789 [7]3 years ago
5 0
X=9. because if you subtract 12 from 129 you get 117 and then divide 117/13 and you get 9
marshall27 [118]3 years ago
3 0

Answer:

The value of x would equal 9

Step-by-step explanation:

129 - 12 = 117

117/13 = 9

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Ethan went to the store and purchased a new DVD player and some movies fro $532. Th cost of the movies was 3 times as much as th
Juliette [100K]
The equation is provided below:

x = cost of DVD player
3x = cost of the movies
$532 = total amount purchased for the DVD player and the movies

$532 = x + 3x
$532 = 4x
$532 / 4 = 4x / 4
$133 = x (cost of the DVD player)

$133 * 3 = $399 (cost of the movies)

To check if the equation is correct:

$532 = $133 + ( 3 * $133)
$532 = $133 + $399
$532 = $532

The correct answer for the cost of the movies will be $399.
3 0
3 years ago
What is the value of 4x - 7 when x=4?<br><br> 1<br> 9<br> 16<br> 23
marshall27 [118]

Answer:

9

Step-by-step explanation:

4x - 7;x = 4

"P" in PEMDAS is parentheses which is done first.

4(4) - 7 \\ 16 - 7

"S" is substraction done next.

16 - 7 = 9

7 0
4 years ago
Read 2 more answers
How do you divide in a mathematical equation that would be done at school
Valentin [98]

Answer:

Like if 40 Divided by 2 = 20

Step-by-step explanation:

You take 40 and put it into a little box and the put the 2 on the outside it splits it into 2 portions basically.

3 0
3 years ago
How do you Simply 76 over 3
never [62]
76 over 3 is the same thing as 76 divided by 3. I like to use long division to do it. The quotient will be the whole number, the remainder will be the numerator, and 3 is till the denominator.
The answer is 25 1/3.(25 is the whole number) 
8 0
3 years ago
The length of the side of a regular octagon is 2.5y - 3 units. The perimeter of the octagon is _
lidiya [134]

Answer:

Step-by-step explanation:

1 side = 2.5y - 3

8 sides = 8(2.5y - 3)

8 sides = 20y - 24

Perimeter = 20y - 24

8 0
3 years ago
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