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ruslelena [56]
2 years ago
8

90 students like watching television

Mathematics
1 answer:
arsen [322]2 years ago
8 0
90 and don’t feel bad
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Can someone solve this for me???
kolezko [41]

Answer:

Part A: x^2 + 5x  - 8

Part B: 5x^3 + 3x^2 - 6x + 5

Step-by-step explanation:

Part A:

To find the total of side 1 and 2, add the two expressions which represent each side. Combine like terms to simplify.

3x^2 − 2x − 5 + (7x - 2x^2 − 3)

3x^2 - 2x^2 -2x + 7x -5 + -3

x^2 + 5x  - 8

Part B:

To solve for the third side of a triangle using its perimeter, subtract the lengths of two of its sides from its perimeter. The perimeter is 5x^3 + 4x^2 − x − 3. Subtract 3x^2 − 2x − 5  and 7x - 2x^2 − 3. The remaining expression is the third side. Combine like terms to simplify.

5x^3 + 4x^2 − x − 3 - (3x^2 − 2x − 5) - (7x - 2x^2 − 3)

5x^3 + 4x^2 - x - 3 - 3x^2 + 2x + 5 - 7x + 2x^2 + 3

5x^3 + (4x^2 -3x^2 + 2x^2) + (-x + 2x - 7x) + (-3 + 5 + 3)

5x^3 + 3x^2 - 6x + 5

4 0
3 years ago
Joey practices the guitar every 11th day and the trombone every 3rd day. Joey practiced both the guitar and the trombone today.
densk [106]

11 = 11*1

3=3*1

least common multiple = 3*11*1 = 33

33 days from today he will practice the guitar and the trombone

6 0
3 years ago
Brainiest to whoever correct
LuckyWell [14K]

Answer: 2nd one.

Step-by-step explanation:

7 0
2 years ago
What is the answers to this
mash [69]
Answers to what exactly?
3 0
3 years ago
May someone help me on this please
harkovskaia [24]
I did the math and it said it was 60$

my mother has a degree in math and was top in her class

I asked her how to do it and she showed me how to, and I got 60$

sorry if its wrong
4 0
3 years ago
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