Answer:
6174π
Step-by-step explanation:
The equation for a whole sphere is 4/3 π(r)³
Given the diameter of 42, we can conclude that the radius would be 21
Next, we would plug in these variables and get 4/3 π(21)³
Simplify all of this down and you would get 12348π
Keep in mind that we are working with a hemisphere. That means that we need to take half of 12348π
Divide that by 2 and you get 6174π
Hope this helps! :)
X^2 + y^2 -2y-11=0
x^2 + y^2 -2y=11
x^2 + y^2 -2y + ? = 11 + ?
x^2 + y^2 -2y + 1 = 11 + ?
x^2 + y^2 -2y + 1 = 11 + 1
x^2 + (y-1)^2 = 12
Solution: Circle
Answer:
Step-by-step explanation:
I think that you have yo multiply 2r and 4 because you have multiply them by 2
The correct way to say it is.
These are some of the main reasons plants benefit humans' lives.
Answer:
y = +3/2x + 12
Step-by-step explanation:
get slope
get midpoint
get b
1.
(-7,8) and (-1,4)
get slope
(y₂ - y₁) / (x₂ - x₁)
slope is -2/3
perpendicular slope is the negative reciprocal :
+3/2
y=mx + b
y=+3/2x + b
get midpoint :
(x₁ + x₂)/2, (y₁ + y₂)/2
(-4,6)
get b
y=mx + b
6=+3/2(-4) + b
6= -6+ b
b = 12
y = +3/2x + 12