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3 years ago

What does biodiversity indicate about an ecosystem?

Mathematics

1 answer:

faust18 [17]3 years ago

8 0

answer: Biodiversity is a measurement of how many different types of organisms are found in an ecosystem

Step-by-step explanation:

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3x+2y=15 4x-5y=-3 What is the following system of equations

laila [671]

Answer:

x=3,y=3

Step-by-step explanation:

8 0

3 years ago

Suppose that the probability that a person will develop hypertension over a life time is 60%. Of 13 graduating students from the

Savatey [412]

Answer:

The mean number of the students who develop hypertension over a life time is 7.8.

Step-by-step explanation:

For each person, there are only two possible outcomes, either they will develop hypertension, or they will not. The probability of a person developing hypertension is independent of any other person, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$E(X) = np$

Suppose that the probability that a person will develop hypertension over a life time is 60%.

This means that $p = 0.6$

13 graduating students from the same college are selected at random.

This means that $n = 13$

Find the mean number of the students who develop hypertension over a life time

$E(X) = np = 13*0.6 = 7.8$

The mean number of the students who develop hypertension over a life time is 7.8.

5 0

3 years ago

Marvin has read 8% of the novel he started reading last Saturday. Which decimal is equivalent to the percentage of the novel Mar

timama [110]

Answer:

0.8 or 0.08 i believe

Step-by-step explanation:

hope this helps!

8 0

3 years ago

Let the base of a solid be the first quadrant region bounded by y=1-((x^2)/4), the x- axis and the y-axis. Suppose that cross se

barxatty [35]

Answer:

bjttkkhdvehakasgsgsbdhdndns thats the answer pick me brainliest

4 0

3 years ago

If you were to flip a coin 10 times, what is the probability that it will land on heads exactly 7 out of 10 times?

bezimeni [28]

Answer:

The probability of flipping a coin 10 times and it landing on heads exactly seven times is about 0.1172 or 11.72%.

Step-by-step explanation:

We can use basic binomial distribution, which is given by the formula:

$\displaystyle P(x) = {n \choose x}p^xq^{n-x}$

Where n represent the number of trials, x represent the number of successes desired, p represent the chance of success, and q represent the chance of failure.

Since we are flipping a coin 10 times, we are conducting 10 trials. So, n = 10.

We want to probability that it lands on heads exactly 7 out of 10 times. So, the number of desired successes x is 7.

The probability of success p is 1/2.

And the probability of failure q is also 1/2.

Substituting:

$\displaystyle P(7)={10 \choose 7}\left(\frac{1}{2}\right)^7\left(\frac{1}{2}\right)^3=120\left(\frac{1}{2}\right)^{10}=\frac{120}{1024}=\frac{15}{128}\approx0.1172$

The probability of flipping a coin 10 times and it landing on heads exactly seven times is about 0.1172 or 11.72%.

8 0

3 years ago