Answer:
12 cm³
Step-by-step explanation:
the volume of the sphere = 4/3 πr³
the volume of the cylinder (h=2r)= πr².2r
= 2πr³
the volume ratio of S : C =
4/3 πr³ : 2 πr³
= 4/3 : 2
= 4 : 6
= 2 : 3
so, the volume of the Sphere =
2/3 × 18 = 12 cm³
To find the value of x, first subtract 3x from both sides to get the variable on one side.
6x-6=3x+10
6x-3x-6=3x-3x+10
3x-6=10
Then add 6 on both sides.
3x-6+6=10+6
3x=16
Divide both sides by 3 to find x.
=
Therefore, x = or 5.3.
I think u would just do the work and add the decimal in
Answer:
(d)
Step-by-step explanation:
Elimination is a good choice of solution method when the coefficient of a variable in one equation is a simple multiple of the coefficient of that same variable in the other equation. This is the case for the system in the last choice. (see attached)
__
We can consider the alternatives:
(a) substitution for y would work well
(b) the solution is given, no solution effort is required
(c) substitution for y would work well
(d) elimination would work well.
3(2x +3y) +(-6x +y) = 3(18) +(12) . . . . . eliminates x (y=6.6)
(2x +3y) -3(-6x +y) = (18) -3(12) . . . . . . eliminates y (x=-0.9)
Answer:
30/2
15 cm per min
Step-by-step explanation: