All categories

3 years ago

Please!!!! Please Help!!!!! 30 Points!!!!!

Mathematics

2 answers:

CaHeK987 [17]3 years ago

5 0

Answer:

9,951.04

Step-by-step explanation:

First you find the area of the rectangle:

44x88=3,872

Then you add the area of the two semi circles:

A=1/2(pi)(r^2)

A= 3,039.52

Multiply the area above by 2 since there are two semi circles and they are the same size.

Ainat [17]3 years ago

3 0

I don’t know, sorry
______________

You might be interested in

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

What is the domain of the function f(x)= ln(x^2-4)?<br> Please show your work.

snow_lady [41]

F(x) = ㏑(x² - 4)

Domain: {-2 ≤ x ≤ 2}, or [-2, 2]

6 0

3 years ago

Read 2 more answers

Solve system by elimination <br> 8x-8y=-16<br> -8x-7y=-29

Gnesinka [82]

Add these together.
You get -15y=-45
So y=3

Now plug in to first equation.
8x-8(3)=-16
8x-24=-16
8x=8 so x=1

Check both values in second equation.
-8(1)-7(3)=
-8-21=-29

It works...so x=1, y=3

6 0

3 years ago

If the following continuous or discrete : the total cost form buying gas at $2.75 per gallon

zimovet [89]

I wanna points hahahahaha

8 0

3 years ago

In the diagram below, determine the value of $x$: [asy] size(6.5cm); pair cis(real magni, real argu) { return (magni*cos(argu*pi

Inessa05 [86]

Answer:

55 degrees

I answered the question on AoPS and it said it was correct.

6 0

3 years ago