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masya89 [10]
2 years ago
15

Please help im very confused

Mathematics
1 answer:
joja [24]2 years ago
7 0
Download the app photo math, it will give u all the answers for those and shows the work
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Helppppppppppp plssss
Reptile [31]

Answer:

It is the 3rd choice. It is 4 times as big as the smaller cylinder

Step-by-step explanation:

V = πr2h

r - radius

h - height

π - pi

  • Small cyclinder

= π(3)2(10)

enter into a calucaltor and you get 282.74

  • Big cyclinder

= π(6)2(10)

enter into a calucaltor and you get 1130.97

Divide 1130 by 282 and you get about 4

3 0
3 years ago
An unfair coin with​ Pr[H] = 0.2 is flipped. If the flip results in a​ head, a marble is selected at random from a urn containin
satela [25.4K]
Normally when dealing with coins the probability of getting heads or tails is 0.5 each. However in this case since its an unfair coin, the probability of getting heads is 0.2. 
H - head 
T - tails
R - red marble
pr (H) = 0.2
urn
6 red and 4 blue
pr (T)   = 0.8
urn
3 red and 5 blue

when heads is obtained 
red - 6/10 -0.6
blue - 4/10 - 0.4
therefore when multiplying with 0.2 probability of getting heads
pr (R ∩ H) red - 0.6*0.2 = 0.12

when tails is obtained 
red - 3/8 - 0.375
blue - 5/8 - 0.625
when multiplying with 0.8 probability of getting tails
pr (R ∩ T) red - 0.375 * 0.8 = 0.3

using bayes rule the answer can be found out, 
the following equation is used;
pr (H | R) = pr (R ∩ H) / {pr (R ∩ H) + pr (R ∩ T)}
               = 0.12 / (0.12 + 0.3)
               = 0.12 / 0.42
               = 0.286
the final answer is 0.286
6 0
3 years ago
Please help explain how to do this
ELEN [110]
Parentheses
Exponents
Multiple
Divide
Add
Subtract
4 0
2 years ago
Read 2 more answers
PLEASE HURRY ILL GIVE BRAINLIEST FOR FIRST ANSWER
TEA [102]

Answer:

(b) 17 1/3

Step-by-step explanation:

mixed number

A number is written as a whole number and a fraction

4 0
3 years ago
Select the correct answer.<br><br> Which expression is equivalent to sin^2x-sinx-2/sinx-2?
ladessa [460]

Answer:

A

Step-by-step explanation:

We are given:

\displaystyle \frac{\sin^2(x)-\sin(x)-2}{\sin(x)-2}

To make it simpler and more clear, we can let u = sin(x). So:

\displaystyle \frac{u^2-u-2}{u-2}

Now, it becomes obvious that we can factor, which produces:

\displaystyle =\frac{(u-2)(u+1)}{u-2}

Cancel:

=u+1

And substituting back:

=\sin(x)+1

Hence, our answer is A.

3 0
2 years ago
Read 2 more answers
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