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2 years ago

I need help solving for x

Mathematics

1 answer:

love history [14]2 years ago

5 0

X=110. it doesn’t look right since it appears to be an acute angle, but if you solve it, it’s right.

hope this helps:)

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Por favor denme una ecuación a esta pregunta:

Katena32 [7]

Answer:

x + 13 = 25

Step-by-step explanation:

Se puede representar "un número" con x.

"Adiciona" significa +.

x + 13

"El resultado" significa =.

x + 13 = 25

7 0

3 years ago

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

3 years ago

Sin A = 90-Cos A. And Cos A = 90-Sin A.

ruslelena [56]

Sorry, wt does it mean by angle A has sin 54

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3 years ago

Find the domain of f(x) = x+5/ 2-x

lions [1.4K]

I don’t know I am stuck on thisss

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2 years ago

Find an<br> angle 0 coterminal to -301°, where 0°

Zielflug [23.3K]

Answer:

what do you mean?!??!!!!

6 0

3 years ago

Read 2 more answers

I need help solving for x​

I need help solving for x