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3 years ago

The area of the irregular polygon is ____ square units.

Mathematics

1 answer:

Aneli [31]3 years ago

7 0

First, you can section the polygon in the regular shapes.

Now, we can find the area of the bigger polygons. We will multiply 4x3 to get an area of 12 units^2. Then, we do 4x2 to get the area of the smaller polygon. This would be 8 units^2

12+8 is 20

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What is $4,000 / 12 months rounded to the nearest whole number

loris [4]

Answer:

$333

Step-by-step explanation:

4,000 / 12 is about 333.34

Rounding the .34 down to the nearest whole number (0), we end up with about $333.

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3 years ago

Which of the following is NOT a property of a kite?

jonny [76]

The correct answer is <span>C. Diagonals bisect each other

That is not a property of a kite because its diagonals intersect at right angles. Diagonals that bisect each other appear on things such as rectangles. </span>

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3 years ago

Draw 2 different shapes with the perimeter of 16 units

Sergeeva-Olga [200]

First, we must understand that to find the perimeter of an object you must add up the lengths of each side.

Some options are:

A square (4 sides) with sides of 4 units long.
4x4=16

A rectangle (4 sides) that is 6 units long and 2 units wide
6+2+6+2=16

An octagon (8 sides) with sides 2 units long
8x2=16

4 0

3 years ago

Please help !!!!! idk how to do this

vladimir1956 [14]

Answer:

Step-by-step explanation:

When x equals -3, then the first equation is simplified to 9 + 6 + 3 = 18; and the second equation confirms the same answer by showing -6 x -3 = 18

7 0

3 years ago

Students in a statistics class are conducting a survey to estimate the mean number of hours each week that students at their col

Paul [167]

Answer:

The 95% confidence interval for the number of hours students in their college study is between 8.98 hours and 15.42 hours.

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 49 - 1 = 48

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 48 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2.0106

The margin of error is:

M = T*s = 2.0106*1.6 = 3.22

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 12.2 - 3.22 = 8.98 hours.

The upper end of the interval is the sample mean added to M. So it is 12.2 + 3.22 = 15.42 hours.

The 95% confidence interval for the number of hours students in their college study is between 8.98 hours and 15.42 hours.

3 0

3 years ago