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tangare [24]
3 years ago
8

Find the sum of 2x2 3x - 4, 8 - 3x, and -5x2 2. -3x2 - 2 -7x2 - 2 -3x2 6 -7x2 - 6x - 2

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0
-3x to the second power - 2

I believe this is your answer. 
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A spherical balloon has a 34-in. diameter when it is fully inflated. Half of the air is let out of the balloon. Assume that the
jeka57 [31]

Answer:

a. 20,579.52 cubic inches

b.10,289.76  cubic inches.

c. 13.49 inches

Step-by-step explanation:

Hi, to answer this question we have to calculate the volume of a sphere:

Volume of a sphere: 4/3 π r³

Since diameter (d) = 2 radius (r)

Replacing with the value given:

34 =2r

34/2=r

r= 17 in

Back with the volume formula:

V = 4/3 π r³

V =4/3 π (17)³

V = 20,579.52 cubic inches

The volume of the half-inflated balloon is equal to the volume of the sphere divided by 2.

20,579.52/2 = 10,289.76  cubic inches.

To find the radius of the half-inflated balloon we have to apply again the volume formula and substitute v=10,289.76

10,289.76= 4/3 π r³

Solving for r

10,289.76/ (4/3 π)= r³

2,456.5 = r³

∛2,456.5 = r

r = 13.49 inches

7 0
3 years ago
Kyla has the number of cherries that Denise has. If Kyla has 46 cherries, how many cherries do they have altogether?​
pogonyaev

Answer:

92

Step-by-step explanation:

46 + 46 = 92

5 0
2 years ago
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F(x) -2x + 5; g(x) =3x²
Julli [10]
The answer is c because you have the right mathmatics
4 0
3 years ago
Factor the expression.<br> 20b + 35 =<br> (Factor completely.)
Airida [17]

Answer:

I think it would be 5(4b+7)

Step-by-step explanation:

I divided both terms by 5.

6 0
2 years ago
Which of the following is a closed statement? Question 16 options: A) z is a positive number. B) x is an odd number. C) 30 is an
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Answer:

Step-by-step explanation:B) x es un número impar

3 0
3 years ago
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