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2 years ago

Can somebody help me with this problem

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

3 0

Break the shape into 2 along the perforated line. now you have two rectangular prisms. find the volume of each and add them together to get your answer.

Rectangular prism: length*width*height
RP1) 10*8*14=1120
RP2) 10*10*8=800
total: 1920

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Which point on the scatter plot is an outlier?

dlinn [17]

Answer:

The point 9,50

Step-by-step explanation:

All the other ones are within a reasonable distance of each other.

7 0

1 year ago

Find the variance of the following data. Round your answer to one decimal place. x 1 2 3 4 5 P(X=x) 0.3 0.2 0.2 0.1 0.2

Reptile [31]

The variance of a distribution is the square of the standard deviation

The variance of the data is 2.2

<h3>How to calculate the variance</h3>

Start by calculating the expected value using:

$E(x) = \sum x* P(x)$

So, we have:

$E(x) = 1 * 0.3 + 2* 0.2 +3 * 0.2 + 4 * 0.1 + 5 * 0.2$

This gives

$E(x) = 2.7$

Next, calculate E(x^2) using:

$E(x^2) = \sum x^2* P(x)$

So, we have:

$E(x^2) = 1^2 * 0.3 + 2^2* 0.2 +3^2 * 0.2 + 4^2 * 0.1 + 5^2 * 0.2$

$E(x^2) = 9.5$

The variance is then calculated as:

$Var(x) = E(x^2) - (E(x))^2$

So, we have:

$Var(x) = 9.5 - 2.7^2$

$Var(x) = 2.21$

Approximate

$Var(x) = 2.2$

Hence, the variance of the data is 2.2

Read more about variance at:

brainly.com/question/15858152

4 0

1 year ago

The sides of a whiteboard are 2 feet by 4 inches. How many 2 inch by 2 inch Post-it notes will be needed to cover the entire whi

weeeeeb [17]

Answer:

Step-by-step explanation:

the area of white board = (2×12) ×4 = 96 sq in.

the area of post-it = 2×2 = 4 sq in

so, numbers of post-it = 96/4 = 24

5 0

2 years ago

Help on this one please??

xenn [34]

Answer:

C = ~50 deg

Step-by-step explanation:

Apply the cosine theorem:

cos(C) = (CA^2 + CB^2 - AB^2)/(2*CA*CB)

= (7.5^2 + 6.5^2 - 6^2)/(2*7.5*6.5)

= 0.6410

=> C = ~50 deg

Hope this helps!

7 0

2 years ago

I need to know this plz answer quick thanks - dely

Tpy6a [65]

120/12=x
120/12=10
Then answer to this problem is B

7 0

3 years ago