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sashaice [31]
2 years ago
15

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER. What is the volume

of the figure.
V=____cm^3 (Round to the nearest tenth as needed.)

Mathematics
1 answer:
OverLord2011 [107]2 years ago
4 0

Answer:

V=12.6cm^3

Step-by-step explanation:

<u>Volume of Cone Formula: </u>V=\pi r^2\frac{h}{3}

Given:

Radius=2, Height=3

1. Plug in your given values into the formula

V=\pi 2^2\frac{3}{3}

2. Solve

V=\pi 2^2\frac{3}{3}\\V=\pi 4\frac{3}{3}\\V=\pi 4*1\\V=\pi 4\\V=12.5663706144

Rounded to tenths: 12.6

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A multiple-choice examination has 20 questions, each with five possible answers, only one of which is correct. Suppose that one
kari74 [83]

Answer:

The probability that the student answers at least seventeen questions correctly is 8.03\times 10^{-10}.

Step-by-step explanation:

Let the random variable <em>X</em> represent the number of correctly answered questions.

It is provided all the questions have five options with only one correct option.

Then the probability of selecting the correct option is,

P(X)=p=\frac{1}{5}=0.20

There are <em>n</em> = 20 question in the exam.

It is also provided that a student taking the examination answers each of the questions with an independent random guess.

Then the random variable can be modeled by the Binomial distribution with parameters <em>n</em> = 20 and <em>p</em> = 0.20.

The probability mass function of <em>X</em> is:

P(X=x)={20\choose x}\ 0.20^{x}\ (1-0.20)^{20-x};\ x =0,1,2,3...

Compute the probability that the student answers at least seventeen questions correctly as follows:

P(X\geq 17)=P (X=17)+P (X=18)+P (X=19)+P (X=20)

=\sum\limits^{20}_{x=17}{{20\choose x}\ 0.20^{x}\ (1-0.20)^{20-x}}\\\\=0.00000000077+0.000000000032+0.00000000000084+0.000000000000042\\\\=0.000000000802882\\\\=8.03\times10^{-10}

Thus, the probability that the student answers at least seventeen questions correctly is 8.03\times 10^{-10}.

4 0
3 years ago
What plus 4/3 equals 19/3 in the simplest form?
dangina [55]
15/3 + 4/3 = 19/3

All you have to do is subtract 4/3 from 19/3 to get 15/3
4 0
3 years ago
There are 52 weeks in a year. If Kendra runs 12 miles every week, how many miles will she run in a year?
Bumek [7]
Okay so there are 52 weeks in a year and she runs 12 miles every week so multiply 52 times 12 which equals 624
6 0
3 years ago
Read 2 more answers
Please I really need help<br> Show workings!
maksim [4K]
X= 5

Set them equal to each other

2x-2=x+3
Subtract x to the other side
X-2=3
Add two to the other side
X=5

Hope it helps
5 0
2 years ago
ANSWER IF YOU KNOW!
boyakko [2]
2/3x=(-20)
X=(-20)x 3/2 ( 2/3 actually changes into 3/2(it's reciprocative form)when the number crosses the equal sign)
X=(-10) x 3
X= (-30)

Hope it helps....
7 0
3 years ago
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