I NEED HELP. NO LINKS!

Mathematics

2 answers:

koban [17]3 years ago

8 0

Answer:

1. First we need to make up a number that represents s so let's go with 7.

S=7

M=140

2. Alex had 20 dollars worth of cash and his brother had 10 he withdrew money from his bank account and now has 20 dollars.

Step-by-step explanation:

When we have 7 we need to multiply by 20 because each student gives 20 dollars.

7x20=140 there for the m is 140

Kruka [31]3 years ago

3 0

What he or she said I got the same thing

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3 years ago

Use cylindrical coordinates. Find the volume of the solid that lies within both the cylinder x2 y2

Sedaia [141]

Answer:

hello your question is incomplete here is the complete question

Use cylindrical coordinates Find the volume of the solid that lies within both the cylinder x^2 + y^2=16 and the sphere x^2 + y^2 + Z^2= 81

Answer : $\frac{4 \pi }{3} [729 - 65\sqrt{65} ]$

Step-by-step explanation:

The given data

cylinder = x^2 + y^2 = 16

sphere = x^2 + y^2 +z^2 = 81

from the given data the solid is symmetric around the xy plane hence we will calculate half the solid volume above the plane then multiply the sesult by 2

Note : we are restricting our attention to the cylinder x^2 + y^2 = 16 and also finding the volume inside the sphere which gives bound on the z-coordinate as well

the r parameter goes from 0 to 4

ATTACHED IS THE REMAINING PART OF THE SOLUTION

showing the integration