Triangle whose base is 5.05 and height is 2.4

1 answer:

7 0

The area of a triangle could be calculated by multiplying the half base by the height.

Area = 0.5 * 5.05 * 2.4 = 6.06 square units.

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If C = 2m2 + m and D = 2 – 6m + 2m², find an expression that equals 2C - 2D in standard form.

lidiya [134]

C = 2m^2 + m
D = 2 - 6m + 2m^2

2C = 2(2m^2 + m) = 4m^2+2m
2D = 2(2-6m+2m^2) = 4-12m+4m^2

2C - 2D =
4m^2+2m-(4-12m+4m^2) =
4m^2+2m-4+12m-4m^2 =
0m^2 + 14m -4 =
14m - 4

3 0

3 years ago

About 9% of the population has a particular genetic mutation. 900 people are randomly selected. Find the standard deviation for

timama [110]

Answer:

The standard deviation is of 8.586.

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they have a genetic mutation, or they do not. The probability of a person having the mutation 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 standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$