Answer:
about 173⁰
Step-by-step explanation:
because it's very close to 180⁰ but isnt it, I'd say between 170 and 180
173 to be safe
Answer: 45.03%
To find the answer for this problem, you first need to find the z-score for a value of 19.25.
The z-score is the number of standard deviations from the mean.
Here is the work for our z-score:
19.25 - 20 = -0.75 / 6 = -0.125
Now, you just have to use a standard normal distribution table and look up the probability for a z-score of -0.125. I used the average of the probability for z-scores of -0.12 and -0.13 to get 45.03%.
Set up an equation to represent the areas of the shapes in the table:
(area of rectangle) - 2(area of circle)
There is a 2 in front of the area of the circle, since there are two identical circles punched out of the rectangle.
First, find the area of the rectangle. The area of the rectangle is given by the following formula:
length * width
You already have your two values for length and width. Plug those values into the formula:
236 is the area of the rectangle.
Now we'll find the area of the circle.
The diameter of the circle is 2. The radius is one half of the diameter, so the radius is 1.
The area of a circle is found with the following formula:
pi is equal to 3.14, so replace the pi symbol with the 3.14. Then, plug your radius into the equation.
The area of the circles is 3.14.
Plug your areas into the first equation above.
The approximate area of the cardboard is
229.72.
Answer: 1 and 4
Step-by-step explanation: just did it