(12x^2+8x-3)-(11x^2-x+5)

Answers

Answer 1
Answer:

Answer:

x^2+9x -8

Step-by-step explanation:

(12x^2+8x-3)-(11x^2-x+5)

12x^2+8x-3-11x^2+x-5

x^2+9x -8

Answer 2
Answer:

Answer:

x^2 + 9x  - 8

Step-by-step explanation:

Break the brackets out and you will get:

(12x^2+8x-3)-(11x^2-x+5)

= 12x^2 + 8x -3 - 11x^2 - (-x) - (+5)

= 12x^2 + 8x - 3 - 11x^2 + x - 5

=12x^2 - 11x^2 + 8x + x - 5 - 3

= x^2 + 9x  - 8 or x(x+9) -8

You can factorize it even more but it won't factorize much so you can keep it as this equation!

Hope this helped :3


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Terrence and Lee were selling magazines for a charity. In the first week, Terrance sold 30% more than Lee. In the second week, Terrance sold 12 magazines, but Lee did not sell any. If Terrance sold 50% more than Lee by the end of the second week, how many magazines did Lee sell?Choose any model to solve the problem. Show your work to justify your answer.

Answers

Lee sold 60 magazine

Step-by-step explanation:

Terrence and Lee were selling magazines for a charity

  • In the first week, Terrance sold 30% more than Lee
  • In the second week, Terrance sold 12 magazines, but Lee did not sell any
  • Terrance sold 50% more than Lee by the end of the second week

We need to find how many magazines Lee sold

Assume that Lee sold x magazines

∵ Terrance sold 30% more than Lee in the first week

∵ Lee sold x magazines in the first week

- Find 30% of x and add it to x to find how many magazines

  Terrance sold

∵ Terrance sold = 30% × x + x

∴ Terrance sold = (30)/(100) × x + x = 0.3 x + x

∴ Terrance sold = 1.3 x magazines in the first week

∵ Terrance sold 12 magazines in the second week

- Add 1.3 x to 12 to find the number of magazines that Terrence

  sold in the two weeks

∴ Terrence sold 1.3 x + 12 magazines in the two weeks

∵ Lee did not sell any in the next week

∴ Lee sold x magazines in the two weeks

∵ Terrance sold 50% more than Lee by the end of the 2nd week

- Equate 1.3 x + 12 by the sum of x and 50% of x

∴ 1.3 x + 12 = 50% × x + x

∵ 50% × x = (50)/(100) × x = 0.5 x

∴ 1.3 x + 12 = 0.5 x + x

- Add the like terms in the right hand side

1.3 x + 12 = 1.5 x

- Subtract 1.3 x from both sides

∴ 12 = 0.2 x

- Divide both sides by 0.2

60 = x

Lee sold 60 magazine

Learn more:

You can learn more about the percentage in brainly.com/question/12284722

#LearnwithBrainly

Line segment CD has a length of 3 units. It is translated 2 units to the right on a coordinate plane to obtain line segment C'D'. What is the length of C'D'?

Answers

It is still 3 units, because you just moved it.

If you collect 435 cents in nickles. how many nickles do you collect?

Answers

87 nickels because 5 times 87 is going to equal to 435
Easy, you have 435 cents

1 nickle= 5 cents

435/5=87

Thus, you have collected 87 nickles.

Write each expression as the product of two factors   1x3+7x3=

Answers

3+21= 25 is ur answer

Answer:it is 24

Step-by-step explanation:

idk how to explain i used a calculater

What is the initial value of y=55(1-0.02)^t

Answers

Answer:

55

Step-by-step explanation:

Find The area of The rectangle below \ 7 FT 6/10 FT

Answers

Lets first simplify the dimensions of the rectangle
length = 7
breadth = (6)/(10)(3)/(5) = 0.6
The area of rectangle = length * breadth
so, area of rectangle = 7 * 0.6
  
Area of rectangle = 4.2

Hope it helped you.. :D