Answer:
D
Step-by-step explanation:
What we have to do is to find the arc tan
x/2 = arc tan (-1)
tan is negative on the 4th and second quadrant
arc tan (-1) = 135 or 315
pi is 180 degrees
so we have;
135 is 3 pi/4
multiplied by the 2
= 6 pi/4 which is 3 pi/2
315 is 7 pi/4 which is same as 7 pi/2 when we multiply by 2
Quick answer: 5.4 pounds for a ball 3" in radius.RemarkYou are expected to do this by calling 4/3*pi = some constant k
Givensr = 2 inches
r1 = 3 inches
RatioSub and solve Begin by cancelling out the ks.
Next substitute for the 2 rs.
Now expand the 2 cubic amounts.
Conclusion Part OneThe ratio of the two weights is 8/27
Part TwoSet up the ratio for 1.6 pounds to x
Cross multiply
8*x = 27 * 1.6 Combine the right side.
8x = 43.2 Divide by 8
x = 43.2 / 8
x = 5.4 pounds.
If you take physics, you will do this quite frequently.
Answer:
The first thing we must do for this case is to define variables.
We have then:
x: number of slices
y: total cost
We write the linear function that relates the variables.
We have then:
Then, we evaluate the number of slices to find the total cost.
-two slices cost:
We substitute x = 2 in the given equation:
Answer:
two slices = 2.2 $
-ten slices cost:
We substitute x = 10 in the given equation:
Answer:
ten slices = 11 $
-half a slice cost:
We substitute x = 1/2 in the given equation:
Answer:
half a slice = 0.55 $
It would be...
(18 +28) divided by two
then take that and multiply it by the height - 5
the 6 in this equation doesn't matter because it is not the height of the shape