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Leni [432]
3 years ago
6

Is due today !! need help (show work/explanation)

Mathematics
2 answers:
Lady_Fox [76]3 years ago
7 0

Answer:

Step-by-step explanation:

radius=diameter/2

=8/2

=4 m

volume of a cylinder =πr^2h

=3.14*(4)^2*13

=40.82*16

=653.12 m^3

alina1380 [7]3 years ago
5 0
653. 12^3
blahblahblag
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Solve 7x − 2(x + 1) = 6x + 14. (5 points)<br><br> −12<br><br> 12<br><br> −16<br><br> 16
anygoal [31]

Answer:

C

X=-16

Step-by-step explanation:

5 0
3 years ago
Please help my small brain understand this:
antoniya [11.8K]

Answer

45 dolloar

Step-by-step explanation:

3 0
3 years ago
A piece of wire 11 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral tria
forsale [732]

Answer:

11 meters

Step-by-step explanation:

First, we can say that the square has a side length of x. The perimeter of the square is 4x, and that is how much wire goes into the square. To maximize the area, we should use all the wire possible, so the remaining wire goes into the triangle, or (11-4x).

The area of the square is x², and the area of an equilateral triangle with side length a is (√3/4)a². Next, 11-4x is equal to the perimeter of the triangle, and since it is equilateral, each side has (11-4x)/3 length. Plugging that in for a, we get the area of the equilateral triangle is

(√3/4)((11-4x)/3)²

= (√3/4)(11/3 - 4x/3)²

= (√3/4)(121/9  - 88x/9 + 16x²/9)

= (16√3/36)x² - (88√3/36)x + (121√3/36)

The total area is then

(16√3/36)x² - (88√3/36)x + (121√3/36) + x²

= (16√3/36 + 1)x² -  (88√3/36)x + (121√3/36)

Because the coefficient for x² is positive, the parabola would open up and the derivative of the parabola would be the local minimum. Therefore, to find the maximum area, we need to go to the absolute minimum/maximum points of x (x=0 or x=2.75)

When x=0, each side of the triangle is 11/3 meters long and its area is

(√3/4)a² ≈ 5.82

When x=2.75, each side of the square is 2.75 meters long and its area is

2.75² = 7.5625

Therefore, a maximum is reached when x=2.75, or the wire used for the square is 2.75 * 4 = 11 meters

3 0
3 years ago
What is the equation of a line with points (16,-4) and (-32-10) Oy - 4= 1 (x - 16) Oy+4= 1 (x – 16) Oy - 10 = 3 (x – 32) O y + 1
stira [4]

Answer:

  • D. y + 10 = 1/8* (x + 32)

Step-by-step explanation:

Use the given points to work out the equation of the line.

<u>Find the slope:</u>

  • m = (- 10 - (-4)) / (- 32 - 16) = - 6 / - 48 = 1/8

<u>Use (-32, - 10) and point- slope form:</u>

  • y - (- 10) = 1/8*(x - (-32))
  • y + 10 = 1/8* (x + 32)

Correct choice is D

8 0
3 years ago
Read 2 more answers
Help help help its baby work
Olenka [21]

Answer:

the volume of the larger cube is 512

Step-by-step explanation:

we plug in the value of the side into the equation

so we get

8 x 8 x 8= 512

hope this helps <3

6 0
3 years ago
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