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2 years ago

Help pleaseeeee tysm

Mathematics

1 answer:

Leviafan [203]2 years ago

6 0

Answer: Either Rohmbus or Parallelogram...

Step-by-step explanation: Your picture is a bit small, sry

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7. A sphere and a circular cylinder have the same radius, r, and the height of the cylinder is 2r. a. What is the ratio of the v

Nastasia [14]

Answer: (a) 2 : 3

(b) 4 :1

Step-by-step explanation:

$\\$ The Volume of a sphere is given as

$\frac{4}{3}$ $\pi$ $r^{3}$ and the volume of a cylinder is given as $\pi$ $r^{2}$ h

$\\$ The ration of their volume is the same as Volume of Sphere : Volume of Cylinder , which gives

$\\$ $\frac{4}{3}$ $\pi$ $r^{3}$ : $\pi$ $r^{2}$ h

$\\$ recall that they have the same radius and the height of the cylinder is 2r , taking this into consideration, we have

$\\$ $\frac{4}{3}$ $\pi$ $r^{3}$ : $\pi$ $r^{2}$ (2r)

$\\$ which gives 4 : 6 = 2 :3

$\\$ (b) The area of a sphere is 4 $\pi$ $r^{2}$ and the surface area of the circular cylinder is $\pi$ $r^{2}$

$\\$ The ratio then gives

$\\$ 4 $\pi$ $r^{2}$ : $\pi$ $r^{2}$ ,which gives

$\\$ 4 : 1

4 0

3 years ago

Find the product of z1 and z2, where z1 = 2(cos 70° + i sin 70°) and z2 = 4(cos 200° + i sin 200°)

vazorg [7]

Answer:

-8i

Step-by-step explanation:

To multiply numbers is polar form

z1 = r1 ( cos theta 1 + i sin theta 1)

z2 = r2 ( cos theta 2 + i sin theta 2)

z1*z2 = r1*r2 (cos (theta1+theta2) + i sin (theta1+theta2)

z1 = 2(cos 70° + i sin 70°)

z2 = 4(cos 200+ i sin 200)

z1z2 = 2*4 (cos (70+200) + i sin (70+200)

z1z2 = 8 (cos(270) + i sin (270))

= 8 (0 + i (-1))

=-8i

5 0

4 years ago

Read 2 more answers

You have 30,016 grams of radioactive kind of

Ostrovityanka [42]

Answer:

15,008 grams

Step-by-step explanation:

You have 30,016 grams of radioactive kind of rubidium. How much will be left after 54 minutes if its half-life is 18 minutes? 15,008 grams.

4 0

3 years ago

Apply the distributive property to factor out the greatest common factor. 56+32=56+32=56, plus, 32, equals

sattari [20]

Answer:

8(7 + 4) = 88

Step-by-step explanation:

56:

1 x 56

2 x 28

4 x 14

7 x 8

32:

1 x 32

2 x 16

4 x 8

7 0

4 years ago

What is the best estimate for the volume of the pyramid?

professor190 [17]

V=1/3Bh
=1/3(230*230)(138)=2433400

The best estimate for the volume of the pyramid is 2,433,400 m3

7 0

3 years ago