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insens350 [35]
2 years ago
12

What must be on the blank to make statement true.. (3x+_)(xx-4)=3x²-11x-4?

Mathematics
1 answer:
faust18 [17]2 years ago
5 0

Answer:

(3x+4)(x-4) is your answer

Step-by-step explanation:

3x²-11x-4

=3x²-12x+x-4

=3x(x-4)+1(x-4)

=(x-4)(3x+4)

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A cube has a volume of 216cm/3.what is the area of the base of the cube
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Step-by-step explanation:

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We can start by finding the cube root of 216, which is 6. This is the length of each side of the cube.

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to build the garden of your dreams you need 11 m^3 of coil containing 46% clay. you have two types of soil you can combine to ac
aivan3 [116]

Answer: 9m^3 of soil with 50% clay and 2m^3 of soil with 28% clay is required

Step-by-step explanation:

Let x represent the quantity of the soil containing 50% clay that you would use.

Let y represent the quantity of the soil containing 28% clay that you would use.

To build the garden of your dreams you need 11 m^3 of soil.

x + y = 11 - - - - - - - - -1

Since the soil must contain 46% clay, the total amount of clay required is 46/100 × 11 = 5.06 m^3.

you have two types of soil you can combine to achieve this: soil with 50% clay and soil with 28% clay. This means that the quantity of both soils required to achieve 5.06 m^3 will be

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Substituting x = 11 - y into equation 1, it becomes

0.5(11 - y) + 0.28y = 5.06

5.5 - 0.5y + 0.28y = 5.06

- 0.5y + 0.28y = 5.06 - 5.5

- 0.22y = - 0.44

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Substituting y = 2 into x = 11 - y, it becomes

x = 11 - 2 = 9

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Answer:

Step-by-step explanation:

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