Answer:
Step-by-step explanation:
2+4
X +4
B.
2 4
3 х
WIN WIN
C.
3.2
3x
D.
2 6
3 x
Answer:
10%
Step-by-step explanation:
- Set up a proportion:
- Cross multiply, then divide: 6 × 100 = 600, 600 ÷ 60 = 10
- 10/100 = 10%
I hope this helps!
Answer:
32
/3 cm³
Step-by-step explanation:
If the diameter is 4 cm, then the radius is 2 cm.
Use the sphere volume formula:
V = 4/3
r³
Plug in the radius and solve:
V = 4/3
(2)³
V = 4/3
(8)
V = 32
/3
So, the volume of the sphere is 32
/3 cm³
Answer: 60
Step-by-step explanation:
Ok, here we go. Pay attention. The formula for the arc length is

. That means that to use that formula we have to find the derivative of the function and square it. Our function is y = 4x-5, so y'=4. Our formula now, filled in accordingly, is

(that 1 is supposed to be negative; not sure if it is til I post the final answer). After the simplification we have the integral from -1 to 2 of

. Integrating that we have

from -1 to 2.

gives us

. Now we need to do the distance formula with this. But we need 2 coordinates for that. Our bounds are x=-1 and x=2. We will fill those x values in to the function and solve for y. When x = -1, y=4(-1)-5 and y = -9. So the point is (-1, -9). Doing the same with x = 2, y=4(2)-5 and y = 3. So the point is (2, 3). Use those in the distance formula accordingly:

which simplifies to

. The square root of 153 can be simplified into the square root of 9*17. Pulling out the perfect square of 9 as a 3 leaves us with

. And there you go!