3 years ago

Can someone help with functions stats and trig test ? it’s urgent i need to pass

Mathematics

1 answer:

stepan [7]3 years ago

4 0

Answer:

ya i can

Step-by-step explanation:

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Eight More than four times a Number is negative 20

gizmo_the_mogwai [7]

Answer:

If this is what I think it is then your answer is 4x + 8 = -20

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3 years ago

It was reported that 23% of U.S. adult cellphone owners called a friend for advice about a purchase while in a store. If a sampl

leva [86]

Answer:

$P(X=7)$

And using the probability mass function we got:

$P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271$

Step-by-step explanation:

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=15, p=0.23)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find the following probability:

$P(X=7)$

And using the probability mass function we got:

$P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271$

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3 years ago

How to draw a model of 3/10

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Draw a pizza with 10 slices and shade 3 slices

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3 years ago

Three divided by four

muminat

Answer:

0.75

Step-by-step explanation:

3/4=0.75

Hope this helps! :)

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2(-6+2)/4<br><br> I’m really confused.

Luba_88 [7]

Answer: -2

Step-by-step explanation:

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