Well, if the radius is 10, then the circumference is $\frac{2*10*22}7=\frac{440}7$
What's the unit? Either way, 22 rev. per minute means each minute you go by $22*\frac{440}7=\frac{9680}7$ units per second. Now you got the linear speed, just find out the time by dividing the distance by the speed!
So, what's the unit for the radius?

5 0

3 years ago

A block of copper weighs 2160g and has a volume of 240cm cubed. what is the density of the copper?

mrs_skeptik [129]

(Mass) 2160g (Divided by) / (Volume) 240cm (Equals) = 9 (Density)

3 0

2 years ago

Find the equation of a line that intersects with y=2x-1 on the y-axis and is parallel to y=-x.

brilliants [131]

First you multiply2x1 which is 2so now you know that y=2 right then you multiply 2 x 3=6 6=x for the last you wright YxX = 2 x 6=12.Hope I helped) this is your answer

8 0

3 years ago