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Archy [21]
2 years ago
14

Y dont know the answer, can you please help me?

Mathematics
1 answer:
sukhopar [10]2 years ago
3 0

Answer:

it is a

Step-by-step explanation:

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What is the volume of this sphere?
Darina [25.2K]

Answer:

523.59 or 523.60

Step-by-step explanation:

Volume for a sphere: 4/3πr^3 (4÷3x π x r ^ 3)

(r is radius, V is volume)

V= 4/3 x π x r^3

The diameter is 10, so the radius is 5...

V= 4/3 x π x 5^3

V= 4/3 x π x 125

CALCULATER: 4 ÷ 3 x π x 125

Answer 523.59  (523.60 rounded)

6 0
3 years ago
(4 pts) If a rock is thrown vertically upward from the surface of Mars with an initial velocity of 15m/sec
Yuliya22 [10]

Answer:

Step-by-step explanation:

I see you're in college math, so we'll solve this with calculus, since it's the easiest way anyway.

The position equation is

s(t)=-1.86t^2+15t  That equation will give us the height of the rock at ANY TIME during its travels. I could find the height at 2 seconds by plugging in a 2 for t; I could find the height at 12 seconds by plugging in a 12 for t, etc.

The first derivative of position is velocity:

v(t) = -3.72t + 15 and you stated that the rock will be at its max height when the velocity is 0, so we plug in a 0 for v(t):

0 = -3.72t + 15 and solve for t:\

-15 = -3.72t so

t = 4.03 seconds. This is how long it takes to get to its max height. Knowing that, we can plug 4.03 seconds into the position equation to find the height at 4.03 seconds:

s(4.03) = -1.86(4.03)² + 15(4.03) so

s(4.03) = 30.2 meters.

Calculus is amazing. Much easier than most methods to solve problems like this.

7 0
2 years ago
What is the vertex of the parabola?<br><br> A. (-1,0)<br> B. (0,-3)<br> C. (1,-4)<br> D. (3,0)
-BARSIC- [3]
The vertex of a parabola is its highest or lowest point. Here, it is the lowest point, which happens right at the bottom of the U-shape—at (1, –4). Therefore, the answer is C.
5 0
3 years ago
PLEASE HELP! It's due soon!
Brrunno [24]

Answer:

Max height=50 feet after 1 second

It will take 3.5 seconds for the ball hit the ground.

Step-by-step explanation:

Please see attached file for details

7 0
2 years ago
Absolute value of -4 1/2
iragen [17]

Answer: 4 1/2

Step-by-step explanation:

4 0
3 years ago
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