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3 years ago

2 friends share 7 cookies equally how many cookies does each person get

Mathematics

1 answer:

tester [92]3 years ago

5 0

3.5 cookies

Friend one: 3 Friend two: 3

One leftover cookie

Split in half give one to each and that makes 3.5

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How do you solve 54767876+11222.9847

natima [27]

Answer:

54779098.9847

Step-by-step explanation:

You add them together

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3 years ago

I dont understand this equation.

amm1812

Where is the question and what is it?

4 0

2 years ago

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A manager at a local company asked his employees how many times they had given blood in the last year. The results of the survey

Lubov Fominskaja [6]

Answer:

$Var(X) = E(X^2) -[E(X)]^2 = 4.97 -(1.61)^2 =2.3779$

And the deviation would be:

$Sd(X) =\sqrt{2.3779}= 1.542 \approx 1.54$

Step-by-step explanation:

For this case we have the following distribution given:

X 0 1 2 3 4 5 6

P(X) 0.3 0.25 0.2 0.12 0.07 0.04 0.02

For this case we need to find first the expected value given by:

$E(X) = \sum_{i=1}^n X_i P(X_I)$

And replacing we got:

$E(X)= 0*0.3 +1*0.25 +2*0.2 +3*0.12 +4*0.07+ 5*0.04 +6*0.02=1.61$

Now we can find the second moment given by:

$E(X^2) =\sum_{i=1}^n X^2_i P(X_i)$

And replacing we got:

$E(X^2)= 0^2*0.3 +1^2*0.25 +2^2*0.2 +3^2*0.12 +4^2*0.07+ 5^2*0.04 +6^2*0.02=4.97$

And the variance would be given by:

$Var(X) = E(X^2) -[E(X)]^2 = 4.97 -(1.61)^2 =2.3779$

And the deviation would be:

$Sd(X) =\sqrt{2.3779}= 1.542 \approx 1.54$

8 0

4 years ago

Sally can paint a room in 4 hours while it takes steve 5 hours to paint the same room. How long would it take them to paint the

sdas [7]

Answer:

I think it's 20/9 hours. so 2.222222... hours.

Step-by-step explanation:

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2 years ago

What would be the value of x in x+5=-3x-9

9966 [12]

-3 because it shows the value right there

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3 years ago

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