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Gnesinka [82]
3 years ago
15

Please answer this correctly

Mathematics
1 answer:
Eva8 [605]3 years ago
5 0

Answer:

Surface Area is 56π cm²

Step-by-step explanation:

The area for a cylinder's surface area is

a=2πrh+2πr²

The cylinder base's radius is 4 cm

The cylinder's height is 3 cm

Putting into the equation:

a=2×π×4×3+2×π×4²

a=2π×4×3+2×π×4²

a=8π×3+2×π×4²

a=24π+2×π×4²

a=24π+2×π×16

a=24π+2π×16

a=24π+32π

a=56π

The surface area of the cylinder is 56π cm².

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Which table shows a no change linear relationship?
Phantasy [73]

Answer:

C

Step-by-step explanation:

Each of the tables is a linear relationship. Linear relationships increase or decrease steadily by adding or subtracting a constant. Table A increases by 5. Table B decreases by 2. Table C doesn't change. Table D increase by 4.

A "no change" means the y values never change. The constant is 0 and is a horizontal line. Table C is the solution.

8 0
3 years ago
Read 2 more answers
A system for tracking ships indicated that a ship lies on a hyperbolic path described by 5x2 - y2 = 20. the process is repeated
zysi [14]
Answer:
The ship is located at (3,5)

Explanation:
In the first test, the equation of the position was:
5x² - y² = 20 ...........> equation I
In the second test, the equation of the position was:
y² - 2x² = 7 ..............> equation II
This equation can be rewritten as:
y² = 2x² + 7 ............> equation III

Since the ship did not move in the duration between the two tests, therefore, the position of the ship is the same in the two tests which means that:
equation I = equation II

To get the position of the ship, we will simply need to solve equation I and equation II simultaneously and get their solution.

Substitute with equation III in equation I to solve for x as follows:
5x²-y² = 20
5x² - (2x²+7) = 20
5x² - 2y² - 7 = 20
3x² = 27
x² = 9
x = <span>± </span>√9

We are given that the ship lies in the first quadrant. This means that both its x and y coordinates are positive. This means that:
x = √9 = 3

Substitute with x in equation III to get y as follows:
y² = 2x² + 7
y² = 2(3)² + 7
y = 18 + 7
y = 25
y = +√25
y = 5

Based on the above, the position of the ship is (3,5).

Hope this helps :)
8 0
3 years ago
Hii please help me!!!!!
inysia [295]
It should be eight if I remember correctly
3 0
2 years ago
Read 2 more answers
Mary purchased a new drawing box. The height, width and length of the box are respectively 12 cm, 6 cm, 3 cm. She wants to fill
Volgvan
12 x 6 x 3 = 216
Volume = 216 cm cubed

216/0.03 = 7200
Answer = 7200 pencils

Hope it helped :)
6 0
3 years ago
D.<br> Question 2<br> - 3x + 7 (-6 - 50)<br> c=7<br> x = -9
Reil [10]

Answer:

-365

Step-by-step explanation:

-3x+7(-6-50)

  1. -3(-9)+7(-6-50)
  2. 27+7(-6-50)
  3. 27-42-350
  4. -15-350
  5. =-365
5 0
2 years ago
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