Answer:
15lb
Step-by-step explanation:
1lb=453.59
Http://mathsfirst.massey.ac.nz/Algebra/SystemsofLinEq/EMeth.htm this website explains it well
Answer:
See explanation
Step-by-step explanation:
The surface area of the solid generated by revolving the region bounded by the graphs can be calculated using formula

If
then

and

Therefore,

Apply substitution

Then

Now

Hence,

Answer:
55
Step-by-step explanation:
here's the working out i did
Answer:
The answer is 170
Step-by-step explanation:
Because 8 + 9 = 17, if we multiply all of these values by ten or add a zero to the end of each number, we should get
80 + 90 = 170