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4 years ago

Can you please help me

Mathematics

1 answer:

finlep [7]4 years ago

3 0

Answer:

x=10

Step-by-step explanation:

8x+10=6x+30

8x-6x=30-10

2x=20

x=10

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A study conducted at a certain high school shows that 72% of its graduates enroll at a college. Find the probability that among

mixas84 [53]

Answer:

$P(X \geq 1) =1-P(X$

And we can use the probability mass function and we got:

$P(X=0)=(4C0)(0.72)^0 (1-0.72)^{4-0}=0.00615$

And replacing we got:

$P(X \geq 1) = 1-0.00615 = 0.99385$

Step-by-step explanation:

Let X the random variable of interest "number of graduates who enroll in college", on this case we now that:

$X \sim Binom(n=4, p=0.72)$

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:

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

We want to find the following probability:

$P(X \geq 1)$

And we can use the complement rule and we got:

$P(X \geq 1) =1-P(X$

And we can use the probability mass function and we got:

$P(X=0)=(4C0)(0.72)^0 (1-0.72)^{4-0}=0.00615$

And replacing we got:

$P(X \geq 1) = 1-0.00615 = 0.99385$

5 0

3 years ago

What’s the slope of -2,2 and 4,-10

uysha [10]

Slope formula: y2-y1/x2-x1
-10-2/4-(-2)
-12/6
-2
The answer is -2

7 0

4 years ago

PLEASE HELP ME PLZ!!!!!!!!! Can you anwser 13, 15, 17, 19, 21!!!!

madreJ [45]

#13 would be 100%.
#15 would be $9.90.
#17 would be 408.
#19 would be 27840.
#21 would be 26.
Sorry for the late reply.

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3 years ago

(6783+2684)+2566-25634+(-38757y678+(678)y678)(6788+5445)-78+(5534(78)+684)67y678a456=?

Whitepunk [10]

−

2259387936

456

678

−

465820407

678

−

13601

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3 years ago

How to solve the proportion

Bezzdna [24]

So you want to cross multiply. then it would be 3x=25 then divide by 3 isolating x. x=25/3

3 0

3 years ago

Read 2 more answers

Can you please help me ​

Can you please help me