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Usimov [2.4K]
4 years ago
11

Please answer this correctly

Mathematics
2 answers:
AlexFokin [52]4 years ago
8 0

Answer:

the answer is 45 because there are four marbles so it would be a 50/50

quester [9]4 years ago
8 0
Answer: 42 purple marbles

Explanation: there’s an equal amount of purple and green marbles, so if you select a marble 84 times, the best prediction possible would be selecting 42 purple marbles.
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Please help!! I need to know this by today
Fiesta28 [93]
9.42 I think its 9.42

4 0
4 years ago
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
4 years ago
What is the y-intercept of the quadratic function y=x2+5x-25?
Llana [10]

Answer:

y- intercept = - 25

Step-by-step explanation:

To find the y- intercept, let x = 0 in the function

y = 0² + 5(0) - 25 = 0 + 0 - 25 = - 25 ← y- intercept

7 0
3 years ago
Is this a function or not a function <br> (1, 3) (2, 5) ( 3, -4) (4, -3) (5, -1)
Helga [31]
This is a function .................
7 0
3 years ago
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Sydney has piles of 10 stickers sheets. She has 100 sheets in all. How many piles does she have?
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Sydney has 10 piles in all
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4 years ago
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