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3 years ago

(2x+5) ^3 in standard form

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

3 0

Answer:

8x^3+60x^2+150x+125

Step-by-step explanation:

(2x+5)^3=(2x+5)(2x+5)^2 =

(2x+5)(4x^2 +2*2x*5+25)=

(2x+5)(4x^2 +20x+25)=

(2x*4x^2 +2x*20x+2x*25+5*4x^2+5*20x+5*25)=

8x^3+40x^2+50x+20x^2 +100x+125=

8x^3+60x^2+150x+125

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Sergio039 [100]

Answer:

1/9 quart in each glass

Step-by-step explanation:

2/3) / 6

(2/3) * (1/6) = 2/18 = 1/9 quart in each glass

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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:

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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 do you write 70% as a fraction in simplest form ?

alexdok [17]

70% equals to 70/100 in fraction form.
But, you need to write it in simplest form. so, divide both of them from 10 'cause they both can divide completely by it.
70/100 = 7/10
so, your answer is 7/10

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3 years ago

HSHILL

AveGali [126]

Answer:

Step-by-step explanation:

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3 years ago

2(x+1)+3x=37 *what is x??

irina1246 [14]

2(x+1)+3x=37

simplifythe left side:

2x +2 +3x = 37

Combine like terms:

5x +2 = 37

Subtract 2 from both sides:

5x = 35

Divide both sides by 5:

x = 7

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3 years ago

Read 2 more answers