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BARSIC [14]
3 years ago
10

How would this be done?? Please help! Worked explanation please :)

Mathematics
1 answer:
Nonamiya [84]3 years ago
3 0
Ok so what is do is
the bottom half is the radius

the top half is a little bit m ore tricky
we can do
18=base
15=sides
makes an equilateral traignel
split it up into
base 18/2=9
hypotonuse 15
height=?
9^2+x^2=15^2
81+x^2=225
x^2=144
x=12

height=12
add

radis=15
height=12
15+12=27
27 cm

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Suppose that two teams play a series of games that ends when one of them has won ???? games. Also suppose that each game played
Musya8 [376]

Answer:

(a) E(X) = -2p² + 2p + 2; d²/dp² E(X) at p = 1/2 is less than 0

(b) 6p⁴ - 12p³ + 3p² + 3p + 3; d²/dp² E(X) at p = 1/2 is less than 0

Step-by-step explanation:

(a) when i = 2, the expected number of played games will be:

E(X) = 2[p² + (1-p)²] + 3[2p² (1-p) + 2p(1-p)²] = 2[p²+1-2p+p²] + 3[2p²-2p³+2p(1-2p+p²)] = 2[2p²-2p+1] + 3[2p² - 2p³+2p-4p²+2p³] =  4p²-4p+2-6p²+6p = -2p²+2p+2.

If p = 1/2, then:

d²/dp² E(X) = d/dp (-4p + 2) = -4 which is less than 0. Therefore, the E(X) is maximized.

(b) when i = 3;

E(X) = 3[p³ + (1-p)³] + 4[3p³(1-p) + 3p(1-p)³] + 5[6p³(1-p)² + 6p²(1-p)³]

Simplification and rearrangement lead to:

E(X) = 6p⁴-12p³+3p²+3p+3

if p = 1/2, then:

d²/dp² E(X) at p = 1/2 = d/dp (24p³-36p²+6p+3) = 72p²-72p+6 = 72(1/2)² - 72(1/2) +6 = 18 - 36 +8 = -10

Therefore, E(X) is maximized.

6 0
3 years ago
A dilation is an example of a similarity transformation.
Doss [256]

Answer:

A similarity transformation is a dilation or a composition of rigid motions and dilations. Two geometric figures are similar figures if and only if there is a similarity transformation that maps one of the figures onto the other. Similar figures have the same shape but not necessarily the same size.

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
Simplify the following 3/4+5 -1/2 (show steps)
ella [17]

Answer:

5 1/4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
3.26d+9.75d-2.65= helppppppppppppppp
Crazy boy [7]
I’ll teach you how to solve 3.26d+9.75d-2.65
——————————————-
3.26d+9.75d-2.65
Collect like terms by adding their coefficients:
(3.26+9.75)d-2.65
Add the numbers:
3.26+9.75= 13.01
13.01d-2.65
Your Answer Is 13.01d-2.65
Plz mark me as brainliest if this helped :)
4 0
3 years ago
Guys/girls plz help i need help with this.
lawyer [7]

Answer:

8.83 x 10^-5 grams

Step-by-step explanation:

3.7 x 10^-6 grams of carbon power

0.000092 grams of ammonium carbonate

0.000092 = 9.2 x 10^-5

3.7 x 10^-6 = 0.37 x 10^-5

The difference:

(9.2 x 10^-5  ) - (0.37 x 10^-5)

= (9.2 - 0.37) x 10^-5

= 8.83 x 10^-5

5 0
3 years ago
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