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Pepsi [2]
2 years ago
7

If f ( x ) = 3x 2 - 6x + 2 and g ( x ) = 2x 2 + 2x - 11, then find f ( x ) + g ( x ).

Mathematics
1 answer:
nikitadnepr [17]2 years ago
6 0

Answer:

5x^{2} -4x-9

Step-by-step explanation:

f(x)+g(x)

(3x^{2} -6x+2) + (2x^{2} +2x-11)\\3x^{2} -6x+2 + 2x^{2} +2x-11\\
combine like terms --
5x^{2} -4x-9

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There are many toys in a kindergarten. The ratio of the number of dolls to the number of balls to the number of cars is 7:8:5. I
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Answer:

Number of Dolls = 28.

Number of Balls = 32.

Number of Cars = 20.

Step-by-step explanation:

Given the ratio of the number of dolls to the number of balls to the number of cars is 7 : 8 : 5.

Suppose the highest common factor of the three numbers be 'X'.

Then, Number of Dolls = 7x

Number of Balls = 8x

Number of Cars = 5x

Given the total number of dolls, balls, and cars is 80.

It means 7x + 8x + 5x = 80.

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8 0
3 years ago
tyler has a rectangular garden measuring 12m by 20 m that he wants to split diagonally from corner to corner using a fence. how
adelina 88 [10]

Answer:

23.3

(or 4\sqrt{34} (let me know if you wanted this one and is you want it explained) lol)

Step-by-step explanation:

To find the length of the fence, use the Pythagorean theorem because, if you cut a rectangle diagonally, you will create two right triangles, and this formula only works with right triangles:

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Insert values:

12^{2} +20^{2} =c^{2}

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Evaluate exponents

144+400=c^2

Simplify addition

544=c^2

Find the square root of both

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The fence needs to be approximately 23.3 m.

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Answer:

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Step-by-step explanation:

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