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3 years ago

Please help with my math work

Mathematics

2 answers:

likoan [24]3 years ago

5 0

Answer:

1:on both lines (x and y)

2: positive

3:i beileve so

4:i have no idea

Step-by-step explanation:

lilavasa [31]3 years ago

3 0

Answer: (1) is D because D is a further distance from the rest so it is an outlier (2) Negative because it starts at the top and goes further down (3) No because there are not a lot of dots in one place (4) scatter plots can show and identify other patterns in data and they are important because they show thing that other graphs don't you should care because they show very important information

Step-by-step explanation: (1)outliers are an observation that lies an abnormal distance from other values in a random sample from a population. (2)Positive slopes go up and Negatives slope fall down. (3) clusters are when a lot of dots are in one place. (4)

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Sherry swam the length of the community pool 4 times. The pool is 32 feet long. What is the total distance Sherry swam, measur

andriy [413]

32 x4 = 128 ft

128 x 12 = 1536

Final Answer: 1,536 inches

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3 years ago

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4 times[9-6 divided by three

djyliett [7]

Answer:

Step-by-step explanation:

9-6/3=9-2=7

4*7=28

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3 years ago

Kasey has three pieces of wood that measure 9 inches, 12 inches, and 21 inches. Can she make a right triangle

Harrizon [31]

Answer: No

Step-by-step explanation:

Add 2 sides together. If the sum of greater than the length of the 3rd side for all 3 options it can form a right triangle if it doesn’t than it can’t:

9 + 12 = 21 which is not greater than the 3rd side length of 21 so this cannot form a right triangle.

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3 years ago

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The function f(x) = 3x − 2 represents the altitude of a hot air balloon, where x is the time in minutes. The function g(x) = x2

cluponka [151]

Answer:

Step-by-step explanation:

If g(x) =x^2 -1, then

f[g(5)] = 3*(5^2-1) -2 =72-2= 70

6 0

3 years ago

About 3% of children in the United States are allergic to peanuts. Choose three children at random and let the random variable X

Charra [1.4K]

Answer:

0.029991 = 2.9991% conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy

Step-by-step explanation:

For each children, there are only two possible outcomes. Either they are allergic to peanuts, or they are not. The probability of a children being allergic to peanut butter is independent of other children. 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.

3% of children in the United States are allergic to peanuts.

So $p = 0.03$

Three children:

So n = 3,

The probabilities are:

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

$P(X = 0) = C_{3,0}.(0.03)^{0}.(0.97)^{3} = 0.912673$

$P(X = 1) = C_{3,1}.(0.03)^{1}.(0.97)^{2} = 0.084681$

$P(X = 2) = C_{3,2}.(0.03)^{2}.(0.97)^{1} = 0.002619$

$P(X = 3) = C_{3,3}.(0.03)^{3}.(0.97)^{0} = 0.000027$

What is the conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy?

This is

$p = \frac{P(X = 2)}{P(X \geq 1)}$

In which

$P(X \geq 1) = 0.084681 + 0.002619 + 0.000027 = 0.087327$

$P(X = 2) = 0.002619$

$p = \frac{0.002619}{0.087327} = 0.03$

0.029991 = 2.9991% conditional probability that exactly two of the children will be allergic to peanuts, given that at least one of the three children suffers from this allergy

8 0

3 years ago