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Vika [28.1K]
3 years ago
5

Simplify the expression. (x-4 x² + 7) - (-5x² + 5x - 3)​

Mathematics
2 answers:
maksim [4K]3 years ago
6 0

x^2 - 4x + 10

sorry if there is no explanation but i hope this helps :)

dem82 [27]3 years ago
3 0
Honestly use mathyway to solve problems like these
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Sally has seventy dollars to spend on eight books. After buying them she had thirteen dollars. How much did each book cost?
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7.13 each

Step-by-step explanation:

70 - 13 = 57. Divide 57/8 and get your answer

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Lucy will rent a car for the weekend. She can choose one of two plans. The first plan has an initial fee of $53 and costs an add
Alchen [17]

Answer:

The amount driven would be 275, and the cost for both plans will be 77.75$

Step-by-step explanation:

make both equations

y=0.09x+53

y=0.13x+42

set them equal to each other and solve for x to get the distance

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6 0
2 years ago
Which ordered pair is a solution to the system of equations?
iren2701 [21]

(- 2, - 3) is a solution to the given system of equations.

Answer: Option D

<u>Step-by-step explanation:</u>

Given equation are not presented in proper format. So, let assume the given system of are as below,

         2 x - y = -1

         2 x -4 y = 8

Now, subtract the second equation from the first, we get

          (2 x - y) -(2 x - 4 y) = -1 -8

          3 y = -9  

           y = -3 (obtained this when divide by 3)

Substituting y = - 3 into the first equation, we get

          2 x - (-3) = - 1

          2 x = - 1 + 3

          x = - 2 (obtained when divide by 2)

Now, the answer is (x, y) = (- 2, - 3)

3 0
3 years ago
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