Answer:
Given:
Radius of large sphere: R1
Volume of sphere: V1
Radius of small sphere: R2
Volume of sphere: V2
R1=2R2
We know that:
Volume of a sphere: 4/3πR^3
Volume of large sphere: 4/3πR1^3
Now we know that R1=2R2(given)
Thus volume of large sphere(V1) 32/3πR2^3.
Volume of small sphere(V2): 4/3πR2^3.
Ratio of volume of large sphere to small sphere is 8:1.
Step-by-step explanation:
To solve, start with this equation

So, 8 times 3 gives you how long they spent on art and 8 times 4 gives you how long they spent on science. So they spent...

and...
63(x-5)
difference= subtraction
do you subtract x by 5, then multiply it by 63
An = -2n(n + 3)
a(15) = -2(15)(15 + 3) = -30(18) = -540
Let e be the minimum number of workers needed.
e(100-3)/100≥215
97e/100≥215
97e≥21500
e≥21500/97
e≥221.6
Since the number of employees must be an integer...
e≥222
So the minimum number of employees needed is 222.