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Elan Coil [88]
2 years ago
7

Use the distributive property to simplify this expression -2x(3x + x-5)

Mathematics
2 answers:
kvasek [131]2 years ago
8 0

Answer:

− 8 x ^2  +  10 x

Step-by-step explanation:

Vedmedyk [2.9K]2 years ago
3 0
-6x-2x+10x
8x+10x
18x.
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You babysit for 3 hours. You receive $24. what is your hourly wage
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Step-by-step explanation:

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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)}

About 9% of the population has a particular genetic mutation.

This means that p = 0.09

900 people are randomly selected.

This means that n = 900

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\sqrt{V(X)} = \sqrt{900*0.09*0.91} = 8.586

The standard deviation is of 8.586.

3 0
3 years ago
What is the ratio 12/21 equivalent to
Amiraneli [1.4K]
4/7, because both the numerator and denominator can be divisible by 3.
7 0
3 years ago
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Make s the subject, v squared = u squared + 2as
tatiyna

v² = u²+2as

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I have a math project i need help with!?!?
Vlada [557]
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