3 years ago

HELP ASAP How many times will the digit '3' appear if we write all whole numbers from 1 to 99?

Mathematics

2 answers:

Liula [17]3 years ago

8 0

Answer:3,13,23,30,31,32,33,34,35,36,37,38,39,43,53,63,73,83,93

Step-by-step explanation:

You gotta count I did this quick

Alekssandra [29.7K]3 years ago

8 0

The digit ‘3’ will appear 20 times

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yarga [219]

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2 years ago

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Natali [406]

Answer:

yes

Step-by-step explanation:

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3 years ago

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Yuri [45]

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2 years ago

Find the surface area of the part of the sphere x2+y2+z2=81 that lies above the cone z=x2+y2−−−−−−√

TiliK225 [7]

Parameterize the part of the sphere by

$\mathbf s(u,v)=(9\cos u\sin v,9\sin u\sin v,9\cos v)$

with $0\le u\le2\pi$ and $0\le v\le\dfrac\pi4$ . Then

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So the area of $S$ (the part of the sphere above the cone) is given by

$\displaystyle\iint_S\mathrm dS=81\int_{v=0}^{v=\pi/4}\int_{u=0}^{u=2\pi}\sin v\,\mathrm du\,\mathrm dv=81(2\pi)\left(1-\dfrac1{\sqrt2}\right)=(162-81\sqrt2)\pi$

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3 years ago

The volume of the cylinder is 220 cubic centimeters. The height is 7.9 centimeters. Find the radius of the cylinder. Use 3.14 fo

podryga [215]

Volume of cylinder= pi x (radius)2 x height

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3 years ago