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Komok [63]
3 years ago
5

[2 -6] - [-2 4] please help

Mathematics
2 answers:
sveticcg [70]3 years ago
6 0

Answer:

\Huge \boxed{20}

Step-by-step explanation:

This question is about order of operations. It stands for parenthesis, exponent, multiply, divide, add, and subtract from left to right.

First thing you do is parenthesis.

\displaystyle [2-6]=-4

\displaystyle -4-[-24]

Then, add and subtract numbers from left to right to find the answer.

\displaystyle -4-[-24]

\displaystyle -4-[-24]=-4+24=20

20, which is our answer.

Hope this helps!

Vladimir [108]3 years ago
5 0

The answer is 20. The explanation is shown in the picture.

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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
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Answer:

There is a 27.62% probability that exactly 2 of the U.S. residents have blood type AB.

Step-by-step explanation:

For each U.S. resident, there are only two outcomes possible. Either they have blood type AB, or they do not. This means that we can solve this problem using binomial probability distribution concepts.

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}.\pi^{x}.(1-\pi)^{n-x}

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

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And \pi is the probability of X happening.

In this problem, we have that:

50 U.S residents are sampled, so n = 50

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This is P(X = 2). So:

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

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There is a 27.62% probability that exactly 2 of the U.S. residents have blood type AB.

5 0
3 years ago
What is the prime factorization of 50? 2 x 5 2 x 25 2 x 5 x 5 2 x 2 x 5
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Answer:

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hope it helps

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4 years ago
I am having a test tomorrow about this can someone help me explain it?​
Amiraneli [1.4K]

Answer:

the answer would be 217 [degrees]

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145+72=217

7 0
3 years ago
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