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dalvyx [7]
3 years ago
8

You have a can that is in the shape of a cylinder. It has a volume of about 1,728 cubic centimeters. The height of the can is 22

centimeters. What is the approximate length of the radius? Use 3.14 for pi.
Mathematics
1 answer:
IRINA_888 [86]3 years ago
6 0
HI,

Volume of a cylinder: V = π × r² × h

We know: h, V
We search: r

If we transform the formula:
r² = V/(π × h) so r = ✓(V/(π × h))

r² = 1 728 / 3.14 × 22
r² = 1728 / 69,08
r² ≈ 25 cm

So r = ✓25 = 5 cm
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Read 2 more answers
Determine whether each ordered pair is a solution to the inequality x+y>−2.
sweet [91]
<h3>3 Answers:</h3>
  • Choice A.  (10, -1)
  • Choice B.  (-8, 9)
  • Choice D.  (6, -3)

===================================

Explanation:

If we plug the coordinates of point A into the inequality, then we get

x+y > -2

10 + (-1) > -2

9 > -2

That last inequality is a true statement since 9 is to the right of -2 on the number line. That means (10,-1) is a solution. Choice A is one of the answers

Choices B and D are also answers for similar reasons.

Something like choice C is not a solution because

x+y > -2

-1+(-9) > -2

-10 > -2

which is false

You should find that choice E is false as well.

---------------------

If you graphed the inequality and all of the points mentioned (see below), then you can visually confirm the answers. Notice how points A, B and D are in the blue shaded region which is the solution set.

The point E on the boundary does not count as a solution. This is due to the lack of "or equal to" portion of the inequality sign. That visually shows point E is not a solution. Point C isn't a solution either as it's nowhere near the blue shaded region.

4 0
3 years ago
Does anyone have a idea ?
FromTheMoon [43]
Might be c not sure!!
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3 years ago
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