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3 years ago

If s= the number of stamps that sara has, which mathematical sentence expresses the information?

Mathematics

1 answer:

Monica [59]3 years ago

7 0

S*x!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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What’s 7843 divided by 3

solmaris [256]

Answer:

2614.33333333

Step-by-step explanation:

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Plz help me with this question

solniwko [45]

The answer is 13/25 13 is odd so it can't be evenly divided by anything so it is in its simplest form

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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:

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

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3 years ago

Hmm..... Can someone help me please ? Thanks!

kolezko [41]

I believe it is A. Hope this helps.

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What is the angle in the diagram below?

marishachu [46]

Answer:

148°

Step-by-step explanation:

x = 180 - 32 = 148°

(Supplementary angles)

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