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Zolol [24]
2 years ago
15

Write a simplified polynomial expression in standard form to represent the area of the rectangle below. X-4 5x + 2

Mathematics
1 answer:
Rus_ich [418]2 years ago
4 0

Answer:

5x^2-18x-8

Step-by-step explanation:

just (x-4)(5x+2)

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Algebraically find the inverse of a function​
Savatey [412]

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Answer:

  1)  f⁻¹(x) = 6 ± 2√(x -1)

  3)  y = (x +4)² -2

  5)  y = (x -4)³ -4

Step-by-step explanation:

In general, swap x and y, then solve for y. Quadratics, as in the first problem, do not have an inverse function: the inverse relation is double-valued, unless the domain is restricted. Here, we're just going to consider these to be "solve for ..." problems, without too much concern for domain or range.

__

1) x = f(y)

  x = (1/4)(y -6)² +1

  4(x -1) = (y-6)² . . . . . . subtract 1, multiply by 4

  ±2√(x -1) = y -6 . . . . square root

  y = 6 ± 2√(x -1) . . . . inverse relation

  f⁻¹(x) = 6 ± 2√(x -1) . . . . in functional form

__

3) x = √(y +2) -4

  x +4 = √(y +2) . . . . add 4

  (x +4)² = y +2 . . . . square both sides

  y = (x +4)² -2 . . . . . subtract 2

__

5) x = ∛(y +4) +4

  x -4 = ∛(y +4) . . . . . subtract 4

  (x -4)³ = y +4 . . . . . cube both sides

  y = (x -4)³ -4 . . . . . . subtract 4

6 0
3 years ago
What is the value of 5k + m when k = -3 and m = -<br> -9?<br> A. -60<br> B. -30<br> C.-24<br> D. -6
sladkih [1.3K]

Answer:

C. -24

Step-by-step explanation:

5k + m \\ k =  - 3 \\ m =  - 9

Plug in values into the given equation

5( - 3) + ( - 9) \\  - 15 - 9 \\  =  - 24

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Each person will get 5.33 pound of turkey.
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I am in middle school
Verizon [17]

Answer:

nice

Step-by-step explanation:

7 0
2 years ago
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Help me please. solve for f (-2)​
Naddika [18.5K]

Answer:

9

Step-by-step explanation:

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2 years ago
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