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Bezzdna [24]
3 years ago
14

A bowl shaped like a sphere has a radius of 15 cm. Which is closest to the amount of air needed to fill the ball?

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
6 0
The formula for a sphere is 4/3*pi*r^3 so we replace 15 with 5 since 15 is the radius and after multiplying everything you get 14,137.17 which can be rounded the 14,130 which is B
SIZIF [17.4K]3 years ago
4 0
I believe it is D not quite sure 
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2. A 10 Mg truck hauls a 20 Mg trailer. If the unit starts from rest on a level road with a
yanalaym [24]

Answer:

<em>The acceleration on the unit is 0.667 m/s^2</em>

<em>The tension on the draw-bar is 13.34 kN</em>

Step-by-step explanation:

The mass of the truck = 10 Mg = 10 x 10^3 kg

The mass of the trailer = 20 Mg = 20 x 10^3 kg

Tractive force from the truck = 20 kN = 20 x 10^3 N

The total mass of the unit = 10 Mg + 20 Mg = 30 Mg = 30 x 10^3 kg

The tractive force on the unit will produce an acceleration that is given as

F = ma

where

F is the tractive = 20 x 10^3 N

m is the mass of the unit = 30 x 10^3 kg

a is the acceleration of the unit = ?

substituting into the equation

20 x 10^3 = 30 x 10^3 x a

a = (20 x 10^3)/(30 x 10^3) = <em>0.667 m/s^2</em>

the tension on the draw-bar T is gotten from considering only the mass that is pulled by the draw-bar which is 20 Mg

The acceleration on the unit = 0.667 m/s^2

The drawn mass = 20 Mg = 20 x 10^3 kg

The tension on the draw bar = ma = 20 x 10^3 x 0.667 = 13340 N

= <em>13.34 kN</em>

8 0
3 years ago
What happens when the median is between two numbers?
Wewaii [24]
If you mean when 2 numbers are left. then you would, add the numbers together and then divide them by 2

hope i helped


6 0
2 years ago
Find the surface area of the prism.
8_murik_8 [283]

Answer:

148^2

Step-by-step explanation:

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6 0
2 years ago
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insens350 [35]

Answer:

Step-by-step explanation:

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3 years ago
How do you write 7 29/80 (mixed number) to a decimal?
Finger [1]
A fraction can be viewed as a division problem, and a mixed number can be viewed as an addition problem. So,
7 29/80 can be read as:

7+29÷80

Follow the order of operations and you'll have your decimal.

7+29÷80
7+0.3625
7.3625
6 0
3 years ago
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