3 years ago

Can anyone help me on this question? Plese asap

Mathematics

1 answer:

dmitriy555 [2]3 years ago

4 0

It’s the letter of c

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54x^3 +250y^3<br> in the sum of cubes<br> please helpppp

Slav-nsk [51]

Answer:

What is exactly the question?

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3 years ago

How do you write 608,000 in scientific notation

baherus [9]

6.08*10^5
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3 years ago

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Need help with me question

Irina-Kira [14]

Answer:

x = -6 x=5

Step-by-step explanation:

x^2 +x -30 =0

Factor

What two numbers multiply to -30 and add to 1

6 * -5 = -30

6-5 =1

(x+6) (x-5) =0

Using the zero product property

x+6 =0 x-5=0

x+6-6=0-6 x-5+5=0+5

x = -6 x=5

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3 years ago

suppose for your cookout you need to make 100 hamburgers. you know that 2 pounds will make 9 hamburgers. how many pounds will yo

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3 years ago

Given the following discrete uniform probability distribution, find the expected value and standard deviation of the random vari

katovenus [111]

The expected value is

$E[X]=\displaystyle\sum_xx\,P(X=x)=\frac1{11}\sum_{x=0}^{10}x=\dfrac{0+1+\cdots+9+10}{11}=\dfrac{55}{11}=\boxed{5}$

The standard deviation is the square root of the variance, which is

$V[X]=E[(X-E[X])^2]=E[X^2]-E[X]^2$

where

$E[X^2]=\displaystyle\sum_xx^2\,P(X=x)=\frac1{11}\sum_{x=0}^{10}x^2=\dfrac{0^2+1^2+\cdots+9^2+10^2}{11}=\dfrac{385}{11}=35$

so that

$V[X]=35-5^2=10$

making the standard deviation

$\sqrt{V[X]}=\sqrt{10}\approx\boxed{3.16}$

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3 years ago