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2 years ago

Select the correct answer.

Mathematics

1 answer:

Black_prince [1.1K]2 years ago

4 0

It’s b I think hope this helps you

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Max’s grandmother is 83 years old. Which expression should he use to find his grandmother’s age in months? (12 months = 1 year)

NISA [10]

Answer:

83x12

Step-by-step explanation:

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3 years ago

(7)/(x-3)-(5)/(x+3)

Akimi4 [234]

As I look into the problem with a deeper meaning then math I realize this answer can be not as hard as it appears and it could be hard to answer it

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2 years ago

On each round, Ann and Bob each simultaneously toss a fair coin. Let Xn be the number of heads tossed in the 2n flips which occu

CaHeK987 [17]

Answer:

$P=\frac{2n!}{m!*(2n-m)!}*0.5^{2n}$

Step-by-step explanation:

In a coin toss the probability of tossing a head is 0.5 (50% head/50% tails)

If n is the number of rounds and 2n the number of coins tossed (one for each player), the probability of having m heads tossed is:

$R=\frac{2n!}{m!*(2n-m)!}$

R is the number of cases (combination of coins tossed) that gives a m number of heads. Each case has a probability of $P_{case}=0.5^{2n}$ so:

$P=\frac{2n!}{m!*(2n-m)!}*0.5^{2n}$

<u>For example, to toss 4 heads in 5 rounds: </u>

n=5
2n=10
m=4

$P=\frac{10!}{4!*(10-4)!}*0.5^{10}$

$P=\frac{10*9*8*7*6!}{4!*6!}*0.5^{10}$

$P=\frac{10*9*8*7}{4!}*0.5^{10}$

$P=\frac{10*9*8*7}{4!}*0.5^{10}=0.205$

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2 years ago

A sandwich shop serves 4 ounces of meat and 3 ounces of cheese on each sandwich. After making sandwiches for an hour, the shop o

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Answer:

7 oz, 13 sandwiches, 22.75 oz, and 30.33 oz.

Step-by-step explanation:

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2 years ago

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