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expeople1 [14]
2 years ago
7

I need help......,.................

Mathematics
2 answers:
Reptile [31]2 years ago
7 0

The answer is B

everyone should know this

Alexxandr [17]2 years ago
4 0

Answer:B

Step-by-step explanation:

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|9-(-1)|= simplify the expression
Hitman42 [59]

Answer:

10

Step-by-step explanation:

Remove parentheses.

|9+1|

Simplify  9+1  to 10.

|10|

simplify

10

7 0
3 years ago
The claim is that the white blood cell counts of adult females are normally​ distributed, with a standard deviation equal to 1.6
loris [4]
The population standard deviation, σ = 1.68, the sample standard deviation, s = 1.95, the sample mean =7.23,  and the sample size, n = 39.The test statistics is given by
T=(n - 1) (s / σ)²
= (39 - 1) (1.95 / 1.68)²
= 38 (1.35)= 51.196
3 0
3 years ago
Binomial Probability
ASHA 777 [7]

Answer:

4.39% theoretical probability of this happening

Step-by-step explanation:

For each coin, there are only two possible outcomes. Either it lands on heads, or it lands on tails. The probability of a coin landing on heads is independent of other coins. So we use the binomial probability distribution to solve this question.

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.

Theoretically, a fair coin

Equally as likely to land on heads or tails, so p = \frac{1}{2} = 0.5

10 coins:

This means that n = 10

What is the theoretical probability of this happening?

This is P(X = 2).

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

P(X = 2) = C_{10,2}.(0.5)^{2}.(0.5)^{8} = 0.0439

4.39% theoretical probability of this happening

6 0
3 years ago
What is the equation of the line?​
Pepsi [2]

The line cuts the X axis at x=3 and is parallel to the Y axis.

Thus the equation of the line is $\boxed{x=3}$

5 0
2 years ago
Read 2 more answers
Find the area of the circle. Round your answer to the nearest hundredth.
soldi70 [24.7K]

Answer:

50.27

Step-by-step explanation:

area of a circle: pi X r^2

r= radius

6 0
3 years ago
Read 2 more answers
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