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Airida [17]
3 years ago
9

Solve for x:

class="latex-formula">
Mathematics
2 answers:
iVinArrow [24]3 years ago
8 0

Answer:

x = 4/(11y)

Step-by-step explanation:

22yx = 8

Solve for x so divide each side by 22y

22xy/22y = 8/22y

x = 4/(11y)

Inessa [10]3 years ago
8 0
The answer is x=4/(y)
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Blood type AB is the rarest blood type, occurring in only 4% of the population in the United States. In Australia, only 1.5% of
Umnica [9.8K]

Answer:

a. X is a binomial random variable with n = 50 and p = 0.04

b. Y is a binomial random variable with n = 40 and p = 0.015

Step-by-step explanation:

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

X: the number of US residents (out of 50) with blood type AB.

Blood type AB is the rarest blood type, occurring in only 4% of the population in the United States

This means that p = 0.04, n = 50

Y: the number of Australians (out of 40) with blood type AB.

In Australia, only 1.5% of the population has blood type AB.

This means that p = 0.015, n = 40

Z: the total number of individuals (out of 90) with blood type AB.

Here

n = 90, p = 0.04*\frac{50}{90} + 0.015*\frac{40}{90} = 0.0289

Which of the following is true about the random variables X, Y, and Z?

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3 years ago
Un automóvil corre a 120 kilómetros por hora y otro a 80 kilómUetros por hora; si deben recorrer 960 kilómetros, ¿con cuántas ho
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Answer:

4 hours

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For car 2, the time taken is:

t_2=\frac{960}{80}=12 h

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Gregory runs at a steady pace on his treadmill. In two hours he runs 12 miles.
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So it means every 30 minutes he runs 6 miles

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Element X decays radioactively with a half life of 6 minutes. If there are 480 grams of Element X, how long, to the nearest tent
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Answer:

I calculated 22.9 minutes

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2 years ago
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How to multiply 3 digit numbers by 3 digits and up
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Example:

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7 0
3 years ago
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