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erik [133]
3 years ago
13

What is the volume of a sphere with a radius of nine units

Mathematics
2 answers:
kow [346]3 years ago
6 0

The correct answer is 972π units^3

vagabundo [1.1K]3 years ago
3 0

The volume formula for a sphere is V=\frac{4}{3}\pi  r^3. If the radius is 9 units, we make the replacement accordingly. V=\frac{4}{3}\pi  (9)^3. 9 cubed is 729, so the formula now is V=\frac{4}{3}\pi  (729). Multiplying 729 by 4 and then dividing by 3 gives us the volume, in terms of pi, to be V=972\pi units^3

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Adam proposes that his mother changes his allowance according to the
olga2289 [7]

Answer:

a.) $3.20

b.) $102.40

$3,276.80

Step-by-step explanation:

0.2 times 2 five times is 3.2

0.2 times 2 ten times is 102.4

0.2 times 2 fifteen times is 3,276.8

7 0
3 years ago
1. Solve the given quadratic equations by extracting square roots. Provide an extra sheet for your solutions.​
kirill [66]

An

Step-by-step explanation:

6 0
3 years ago
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A baseball player comes up to bat 3 times during a league game. He either gets a hit or gets an out. How many different combinat
Stella [2.4K]

Answer:

8 different combinations are possible.

Step-by-step explanation:

Here, we have 2 different combinations for each time.

And the player comes out to bat 3 times.

So, total number of combinations are:

2^{3} i.e. a total of 8 number of times.

Let a hit is termed as 'H' and an out is termed as 'O'.

Total combinations are:

{HHH, HHO, HOH, HOO, OHH, OHO, OOH, OOO}

Kindly have a look at the tree diagram attached in the answer area.

In starting, there are 2 combinations possible, i.e. 'O' and 'H'.

After 'O' , 2 possible i.e. 'O' and 'H'.

After 'H' , 2 possible i.e. 'O' and 'H'.

and so on....

8 0
3 years ago
Penny Weights, use the weights of the post 1983 pennies to construct a 98% confidence interval estimate of the standard deviatio
Ronch [10]

Answer:

c. 0.1391 < Ï < 0.2311

Step-by-step explanation:

The formula for Confidence Interval is given as:

Mean ± z × Standard deviation/√n

Z score for 98% confidence interval = 2.326

Mean = Significance level = 100% - 98%

= 2% = 0.02

Standard deviation = S=0.0165

n= 37

Hence,

Confidence Interval =

0.02 ± 2.326 × 0.0165/√37

0.02 ± 0.0063094687

Confidence Interval

0.02 - 0.0063094687

= 0.1391

0.02 ± 0.0063094687

= 0.2311

Hence, the Confidence Interval = (0.1391, 0.2311)

= c. 0.1391 < Ï < 0.2311

7 0
3 years ago
Complete the square for 5x^2+10x-16.
Lelechka [254]
Answer = 5(x+1)^2 -21

5 {x^2 + 2x } - 16

5 {(x+1)^2 -1 } - 16
5(x+1)^2 -5 - 16

5(x+1)^2 -21
7 0
3 years ago
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