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zmey [24]
2 years ago
9

Help me solve this problem ​

Mathematics
2 answers:
noname [10]2 years ago
8 0

Step-by-step explanation:

hereee is your answerr

hope it helps

vesna_86 [32]2 years ago
5 0

Step-by-step explanation:

a=85°. [being corresponding angle]

a+c=180. [being linear pair]

c=180-85

c=95

b=c=95 [being corresponding angle]

b=95

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1. A gambler makes 100 column bets at roulette. The chance of winning on any one play is 12/38. The gambler can either win $ 5 o
lapo4ka [179]

Answer:

a) Expected amount of the gambler's win = $0.209

b) SD = 2.26

c)P (X >1) = P(z >0.35) = 0.36317

Step-by-step explanation:

The probability of winning, p = 12/38 =6/19

Probability of losing, q = 1 -p = 1-6/19

q = 13/19

Win amount = $5

Loss amount = $2

a) Expected total amount of win = ((6/19)*5) - ((13/19)*2)

Expected total amount of win = 1.579 - 1.369

Expected amount of win, E(X) = $0.209

b) Standard Deviation for the total amount of the gambler's win

SD = \sqrt{E(X^{2}) - (E(X))^{2} }

E(X²) = (6/19)*5²  -  (13/19)*2²

E(X²) = 5.158

SD = \sqrt{5.158 - 0.209^2}

SD = 2.26

c)  probability that, in total, the gambler wins at least $1.

P(X >1)

z = \frac{X - \mu}{\sigma}

μ = E(x) = 0.209

z = (1-0.209)/2.26

z = 0.35

P( X >1) = P(z >0.35)

P(z >0.35) = 1 - P(z <0.35)

P(z >0.35) = 1 - 0.63683

P(z >0.35) = 0.36317

5 0
3 years ago
A student is using a map in which the features are distorted and the land size is more accurate near the equator.
Snezhnost [94]
A flat map I think sorry if it’s wrong
8 0
3 years ago
Read 2 more answers
Alice drove 170 miles in 2.5 hours. At this rate, how far will she drive in 4 hours? miles
Elan Coil [88]

Answer:

She will drive 272 miles in 4 hours.

Step-by-step explanation:

4 0
3 years ago
8 + 12n – 4n – 7 Another problem pls dont troll or i will report you :)
loris [4]

Answer:

Step-by-step explanation:

Do u see any similarities between the numbers? Both 12 and -4 have a variable(N). 8 and -7 dont have a variable, so u have to calculate them individually.

One thing to remember is just because there is a minus sign(-) or a plus sign(+) does not mean its addition or subtraction. its the value of the number. the sign to the left of the number is its value. so left of 12 is plus(+), so its a positive. left of 4 is a minus sign(-) so its a negative 4. lastly, left of 7 is minus sign(-), which means its negative 7. now u add.

lets add the variables first:

12n + (-4n) = 8n

add the regular numbers:

8 + (-7) = 1

so its 8n + 1

5 0
3 years ago
64, 57, 50, 43,... 50th term​
tekilochka [14]

Answer:

-279

Step-by-step explanation:

a=64

d=t2-t1=57-64=-7

t50=a+49d=64+49×(-7)

=64-343

=-279

5 0
2 years ago
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