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Misha Larkins [42]
2 years ago
9

Please answer fasttt

Mathematics
1 answer:
-BARSIC- [3]2 years ago
4 0

Answer:

7.5 lb/cu ft

Step-by-step explanation:

75 lb / 10 cu ft = 7.5 lb/cu ft

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The radius of the base of the cylinder is 2x cm and the height of the cylinder is h cm.
valentina_108 [34]

Answer:

h = 9x

Step-by-step explanation:

Given: i. for the cylinder, base radius = 2x cm, height = h cm

           ii. for the sphere, radius = 3x cm

           iii.  volume of the cylinder = volume of the sphere

volume of a cylinder is given as;

volume = \frac{1}{3}\pir^{2}h

where: r is its base radius and h the height

volume of the given cylinder = \frac{1}{3}\pi x (2x)^{2} x h

                                              = \frac{1}{3}\pi x 4x^{2} x h

                                              = \frac{4}{3}\pix^{2} h

volume of a sphere = \frac{4}{3}\pir^{3}

where r is the radius.

volume of the given sphere =  \frac{4}{3}\pi x (3x)^{3}

                                         =  \frac{4}{3}\pi x 9 x^{3}

                                         = 12\pix^{3}

Since,

volume of the cylinder = volume of the sphere

Then we have;

\frac{4}{3}\pix^{2} h = 12\pix^{3}

4\pix^{2} h = 36\pix^{3}

subtract x^{2} from both sides

4\pih = 36\pix

divide both sides by 4\pi

h = \frac{36\pi x}{4\pi }

  = 9x

h = 9x

5 0
3 years ago
Which is a true statement about any two congruent chords in a circle? A.They are parallel. B.They are perpendicular. C.They form
Tom [10]
Its D. they are equidistant from the center of the circle , just took the test and that was the answer on apex
7 0
3 years ago
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What’s four plus four minus thirty two
Tanya [424]

The answer is 4+4-32=-24

8 0
3 years ago
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What are the answers
gulaghasi [49]

Answer and Step-by-step explanation:

7. 70 - 180 = 110

8.  39 - 180 = 141

9. 81 - 180 = 99

10. 81 - 180 = 99

11. 115 - 180 = 65

12.  41+36 = 77 - 180 = 103

x = answer

4 0
2 years ago
-9s - 8 = -4s + 8 - 3s
Olenka [21]
I wont solve this because Im to lazy, but I do recommend some of these sites to help you with your problem. MathPapa Algebra Calculator and PhotoMath. Hope this helps.
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