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olga55 [171]
2 years ago
6

A spherical balloon has a ​-in. diameter when it is fully inflated. Half of the air is let out of the balloon. Assume that the b

alloon remains a sphere.
a. Find the volume of the​ fully-inflated balloon.
b. Find the volume of the​ half-inflated balloon.
c. What is the radius of the​ half-inflated balloon?
Mathematics
1 answer:
4vir4ik [10]2 years ago
5 0

\frac{256}{3}  Pi

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Helpppppppppppppppppppppppppppppp
Maurinko [17]
The best way to do this is to set up a proportion

420          x
------  = ------
600        100

then cross multiply and divide

420 times 100 = 42000/600=70

the correct answer is C. 70 people

I hope I've helped!
8 0
3 years ago
Plzz helpp I’ll mark brainiest
Andru [333]
Answer is year 3
Ben 19
Amy 22
3 0
2 years ago
Read 2 more answers
What is the length of BC?
Alekssandra [29.7K]

Answer:

2.1

Step-by-step explanation:

This involves trigonometry. Since we need to find the value of a, we need to find a trig equation with a as the numerator. Luckily, we have one, tan. So, tan(20) is equal to a/6, right. So, using a calculator, tan(20) is approximately equal to 0.363. This times 6 should equal a. This is approximately around 2.1. Thus our answer is 2.1

6 0
2 years ago
Help please?!
Furkat [3]
Well from what i know here's what i would put........
-4 * -2 = 8 - 2 = 6
-4 * -1 = 4 - 2 = 2
-4 * 0 = 0 - 2 = -2
so it does represent a function......I really hope that helped!!

8 0
3 years ago
What is the length of AB?
Dovator [93]

Answer:

AB = 5

Step-by-step explanation:

The side opposite the 30 degree angle will have the shortest length. The side opposite the 60 degree angle will be  √3  times as long, and the side opposite the 90 degree angle will be twice as long.

In this case we just divide 10 by 2

4 0
2 years ago
Read 2 more answers
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