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2 years ago

The ratio of the measures of the three angles in a triangle is 9:3:6.

Mathematics

1 answer:

Alex2 years ago

5 0

Step-by-step explanation:

this is how you solve it :)

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Select the correct answer from each drop down menu a line passes through point

grandymaker [24]

Answer:

Post questions with content only :)

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3 years ago

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Please help :):):):):):):):......

Gelneren [198K]

13+13=26
9+9=18
18+26=44

Hope this helps :)

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3 years ago

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A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of

disa [49]

Answer:

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

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

Step-by-step explanation:

For this case we assume the following probability distribution:

X 5 6 7 8 9 10

P(X) 0.05 0.15 0.33 0.28 0.12 0.07

First we need to find the expected value (first moment) and the second moment in order to find the variance and then the standard deviation.

In order to calculate the expected value we can use the following formula:

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

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

In order to find the standard deviation we need to find first the second moment, given by :

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

And using the formula we got:

$E(X^2)=(5^2 *0.05)+(6^2 *0.15)+(7^2 *0.33)+(8^2 *0.28)+ (9^2 *0.12 +(10^2 *0.07))=57.46$

Then we can find the variance with the following formula:

$Var(X)=E(X^2)-[E(X)]^2 =57.46-(7.48)^2 =1.5096$

And then the standard deviation would be given by:

$Sd(X)=\sqrt{Var(X)}=\sqrt{1.5096}=1.229$

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3 years ago

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Miss Violet is buying granola bars for her students. She already has 16 granola bars in her desk and needs a total of 100 bars.

masha68 [24]

Answer:

100 - 16 = 84, and 84 divided by 12 is 7. She needs to buy 7 more boxes of granola bars for her students.

Step-by-step explanation:

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2 years ago

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Que expresión representa el teorema de Pitágoras

Likurg_2 [28]

La Respuesta es B. A2+B2=C2

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3 years ago