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Alexandra [31]
3 years ago
14

Simplify the expression and explain each step

Mathematics
1 answer:
zhuklara [117]3 years ago
4 0

(3x +2)-2

-2(3x) -2( +2)   Distribute the -2

-6x  - 4


20B  - 16

 /4           divide out a greatest common factor

4(5b - 4)

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4 years ago
Use the substitution method to solve the system of equations below.
Serhud [2]

Answer:

  • x = -1
  • y = -3

Step-by-step explanation:

Since you have an expression for y, it is convenient to use it.

  -2x + 8(3x) = -22 . . . . . substitute 3x for y in the second equation

  22x = -22 . . . . . simplify

  x = -1 . . . . . . . . . .divide by 22

Substituting this value into the expression for y:

  y = 3(-1) = -3

The solution is (x, y) = (-1, -3).

4 0
4 years ago
-x + 7 = 9 - x <br> pls help w
ikadub [295]

Answer:

no solution

Step-by-step explanation:

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6 0
3 years ago
X2-3xy-5xy-7y2+4x2+8y2
Zepler [3.9K]

For this case we must simplify the following expression:

x ^ 2-3xy-5xy-7y ^ 2 + 4x ^ 2 + 8y ^ 2

We must add similar terms taking into account that:

  • Equal signs are added and the same sign is placed.
  • Different signs are subtracted and the major sign is placed.

(x ^ 2 + 4x ^ 2) + (- 3xy-5xy) + (- 7y ^ 2 + 8y ^ 2) =\\5x ^ 2-8xy + y ^ 2

Thus, the simplified expression is:

5x ^ 2-8xy + y ^ 2

Answer:

5x ^ 2-8xy + y ^ 2

4 0
4 years ago
Some jobs pay a commission plus a bonus at the end of the year. The
RSB [31]

Answer:

a) If Sales = $6412454, then Gross Pay = $471315.369.

If Sales = $412454, then Gross Pay = $30315.369.

b) If Sales = $316250, then Gross Pay = $23244.375.

Step-by-step explanation:

This is a simple question. Madelyn earns a commission plus a bonus from her job. The commission is 7% of sales and the bonus is 5% of the commission. Therefore:

a) If her sales are $6412454, then her gross pay will include:

Gross Pay = $6412454 * 7% + ($6412454 * 7%) * 5%.

Gross Pay = $448871.78 + $22443.589 .

Gross Pay = $471315.369.

I assume there is a typo in the question, so just in case, I will also calculate the gross pay for her sales equaling $412454.

Gross Pay = $412454 * 7% + ($412454 * 7%) * 5%.

Gross Pay = $28871.78 + $1443.589 .

Gross Pay = $30315.369.

b) If her sales are $316250, then her gross pay will include:

Gross Pay = $316250 * 7% + ($316250 * 7%) * 5%.

Gross Pay = $22137.5 + $1106.875  .

Gross Pay = $23244.375.

To summarize:

If Sales = $6412454, then Gross Pay = $471315.369!!!

If Sales = $412454, then Gross Pay = $30315.369!!!

If Sales = $316250, then Gross Pay = $23244.375!!!

8 0
3 years ago
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