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topjm [15]
3 years ago
11

Find the next three numbers in this sequence. 20, 15, 10, . . .

Mathematics
1 answer:
Tamiku [17]3 years ago
4 0
The rule is minus 5.
So 20, 15, 10, 5, 0, -5

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Find f(2) for the function f(x) = |7x |
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▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

let's find f (2) :

  • |7x|

  • |7 \times 2|

  • |14|

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8 0
3 years ago
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The area of your new rectangular backyard is 3 1/8 square kilometers.The width of the new yard is 1/2 kilometers.What the length
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The length of each side of a cube is x + 1 inches. What is the volume of the cube in cubic inches?
castortr0y [4]

Answer:

V = x³ + 3x² + 3x + 1 in³

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   = (x + 1)(x + 1)(x + 1) ← expand second pair using FOIL

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   = x³ + 2x² + x + x² + 2x + 1 ← collect like terms

   = x³ + 3x² + 3x + 1

3 0
3 years ago
Hi guys can you help me factor these two equations?
mojhsa [17]
Problem # 1

Not Factored: (5x^2 - 13x - 6)
Factored: (5x + 2 )(x - 3)

There is no real "work" to be shown for this, you can see that
1) Seperating 5x^2 into 5x and x will get you the equation in the form:
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2) To complete this factor you need to guess which two numbers will add together to give you - 13x and multiply to form -6 (from the original unfactored equation). The numbers that will do this are 2 and 3

3) You can plug in negative or positives of those numbers to make sure they give you the exact results you need.

For example testing -2 and 3 you will get: (5x - 2) (x + 3 ) = 5(x^2) - 2x + 15x - 6 = 5x^2 +13x - 6.  This is NOT the same as the unfactored equation. So you know -2 and 3 is the wrong choice. Choosing 2 and -3 will give you the answer instead.

As i said, there's no actual "work" to show this, you have to make guesses and try to factor it.

-------------------------------------------------------------------------------------------------
Problem # 2

Not Factored: 4x^4 - 28x^3 + 48x^2
Factored: 4x^2 (x^2 - 7x + 12) =
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To solve this, you factor out the 4x^2 from the entire equation. Then you can further factor the quadratic equation by seperating x^2 into (x    )(x    ) and guessing for which numbers will add to -7x and multiply to 12
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3 years ago
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Mariulka [41]

Answer:

D. 5x - 1

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