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Andrew [12]
3 years ago
11

SOMEONE PLEASE ANSWER THIS ASAP FOR BRAINLIEST!!!!!!

Mathematics
2 answers:
yulyashka [42]3 years ago
5 0
2(5x^2+2x)+2(3x^2)
10x^2+4x+6x^2
16x^2+4x

D is the correct answer.
vredina [299]3 years ago
4 0

Answer:

D

Step-by-step explanation:

The length, in feet, of a rectangular rug is represented by the expression 5x^2 + 2x.. The width, in feet, is represented by the expression 3x^2.

The perimeter of the rectangle is

P=2\text{ lengths}+2\text{ widths}.

Thus, the perimeter is

P=2(5x^2+2x)+2\cdot 3x^2=10x^2+4x+6x^2=16x^2+4x.

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(Brainliest to the person that get its right)
oksian1 [2.3K]
<h3>Answer: Choice B</h3>

c^2-2cd+d^2 = (c-d)^2

We can verify this with the following steps

(c-d)^2 = (c-d)(c-d)

(c-d)^2 = c(c-d) - d(c-d)

(c-d)^2 = c^2-cd-cd+d^2

(c-d)^2 = c^2-2cd+d^2

6 0
2 years ago
Please please help me please please I’m begging you
viktelen [127]

Answer:

D

Step-by-step explanation:

7 0
2 years ago
Write a function using function notation to describe each situation. Find a reasonable domain and range for each function.
sergejj [24]
F(t)= 7.00 x t + 55 A reasonable domain is (0,1,2,3). The range is ($55,$62,$69,$76)
5 0
3 years ago
A rectangular tank with a square​ base, an open​ top, and a volume of 8 comma 7888,788 ft cubedft3 is to be constructed of sheet
Vlad [161]

Answer:

  26 ft square by 13 ft high

Step-by-step explanation:

The tank will have minimum surface area when opposite sides have the same total area as the square bottom. That is, their height is half their width. This makes the tank half a cube. Said cube would have a volume of ...

  2·(8788 ft^3) = (26 ft)^3

The square bottom of the tank is 26 ft square, and its height is 13 ft.

_____

<em>Solution using derivatives</em>

If x is the side length of the square bottom, the height is 8788/x^2 and the area is ...

  x^2 + 4x(8788/x^2) = x^2 +35152/x

The derivative of this is zero when area is minimized:

  2x -35152/x^2 = 0

  x^3 = 17576 = 26^3 . . . . . multiply by x^2/2, add 17576

  x = 26

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As the attached graph shows, a graphing calculator can also provide the solution.

5 0
3 years ago
Y=3xy-1, Solve for y
Ket [755]

Answer:

y = \frac{1}{3x-1}

Step-by-step explanation:

Given

y = 3xy - 1

Collect terms in y on the left side by subtracting 3xy from both sides

y - 3xy = - 1 ← factor out y on the left side

y(1 - 3x) = - 1 ( divide both sides by 1 - 3x

y = \frac{-1}{1-3x} ← multiply numerator/denominator by - 1

y = \frac{1}{3x-1}

3 0
3 years ago
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