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Setler79 [48]
3 years ago
15

Am I on the right track? Or am I doing something wrong?

Mathematics
1 answer:
galben [10]3 years ago
6 0
It looks good to me
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Find x<br><br> 9x+3+5x-2+11x-21=180
Bess [88]

Answer:

x = 8

Step-by-step explanation:

Simplifying

(9x + 3) + (5x + -2) + (11x + -21) = 180

Reorder the terms:

(3 + 9x) + (5x + -2) + (11x + -21) = 180

Remove parenthesis around (3 + 9x)

3 + 9x + (5x + -2) + (11x + -21) = 180

Reorder the terms:

3 + 9x + (-2 + 5x) + (11x + -21) = 180

Remove parenthesis around (-2 + 5x)

3 + 9x + -2 + 5x + (11x + -21) = 180

Reorder the terms:

3 + 9x + -2 + 5x + (-21 + 11x) = 180

Remove parenthesis around (-21 + 11x)

3 + 9x + -2 + 5x + -21 + 11x = 180

Reorder the terms:

3 + -2 + -21 + 9x + 5x + 11x = 180

Combine like terms: 3 + -2 = 1

1 + -21 + 9x + 5x + 11x = 180

Combine like terms: 1 + -21 = -20

-20 + 9x + 5x + 11x = 180

Combine like terms: 9x + 5x = 14x

-20 + 14x + 11x = 180

Combine like terms: 14x + 11x = 25x

-20 + 25x = 180

Solving

-20 + 25x = 180

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '20' to each side of the equation.

-20 + 20 + 25x = 180 + 20

Combine like terms: -20 + 20 = 0

0 + 25x = 180 + 20

25x = 180 + 20

Combine like terms: 180 + 20 = 200

25x = 200

Divide each side by '25'.

x = 8

8 0
2 years ago
Read 2 more answers
Javier works in a photo lab and needs to make a reduced copy of a photograph that is 8 inches long. The customer wants the copy
Volgvan
So, there's total 8 inches and the customer wants to make 4.5 inches long.
Each time he press the reduce button is 12%. He pressed 5 times, so.

12 x 5 = 60%
60% of the 8 = is 4.8 inches

So the conclusion is that his boss is wrong.
4 0
3 years ago
2 Juste ou non ?
Dennis_Churaev [7]

Answer:

Son résultat est faux parce que son numéro est peut-être mal numéroté ou parce qu'il utilise une solution différente.

Step-by-step explanation: S'il vous plait brainliest!

4 0
3 years ago
Read 2 more answers
the dataset below represents the heights of trees(in inches) 13, 82, 83, 95, 92, 98, 96. How many outliers are in this data set?
goldfiish [28.3K]

Answer:

3

Step-by-step explanation:

There are 3 outliers. 13, 82, 83. These outliers are marginally off by the rest of the set.

6 0
2 years ago
the doghouse shown has a floor but no windows find the total surface area of the doghouse including the door
ehidna [41]
66 ft squared.
Hope this helps you:)
8 0
3 years ago
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