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olasank [31]
3 years ago
9

Please help! Help is appreciated! :)

Mathematics
1 answer:
-Dominant- [34]3 years ago
4 0
Your answer to the question is A
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Please help!! giving brainliest !!!
ryzh [129]

Answer:

vertical angle theorem

Step-by-step explanation:

angles that are opposite of  each other and formed by two intersecting straight lines, are congruent.

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2 years ago
Find the area of the regular
ICE Princess25 [194]

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A ≈ 172.05

Step-by-step explanation:

i used the google calculator

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3 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
3 years ago
|f−6|=|f+8|<br><br><br><br><br><br> please help
soldi70 [24.7K]

Answer:f=-1

Step-by-step explanation:

6 0
3 years ago
Please help me this is important​
ANTONII [103]

Step-by-step explanation:

the answer is:

180-48= 132°

7 0
3 years ago
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