Answer: 
Step-by-step explanation:
<h3>
The complete exercise is: "A rectangular yard is 20 ft by 15 ft. The yard is cover with grass except for 8.5 feet square flower garden. How much grass is in the yard?"</h3><h3 />
The area of a rectangle can be calculated with the following formula:
Where "l" is the lenght of the rectangle and "w" is the width.
Based on the data given in the exercise, you can identify tha the length and the width of the rectangular yard are:
Then, you can substitute these values into the formula and then evaluate in order to find the area of the entire yard:
The area of the flower garden which is an square, can be calculated with this formula:
Where "s" is the side length.
In this case you know that:
Then the area of the flower garden is:
<em> </em>Since this is not covered with grass, you need to subtract both areas calculated above in order to find the surface covered with grass in the yard.
This is:
Answer:
Step-by-step explanation:
Given that a soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 inch.
a) sigma = 0.25
Since population std dev is known we can use Z critical value i.e. 2.58
Hence when sigma =0.25
we get n should be atleast = 41.6025 or 42
b) when sigma = 0.3 we get
n >59.390=60
c) Big std deviation requires larger sample size.
Center of the original circle = (-3, 2)
Line x = 2 is a vertical line and a refrection over a vertical line will keep the value of the y-coordinate.
The center of the original circle is five units to the left of the line x = 2 and the center of the image will be five units to the right of the line x = 2.
Hence, the center of the image will be (7, 2)
Therefore, the equation of the image is (x - 7)^2 + (y - 2)^2 = 25
Answer:
c
Step-by-step explanation:
i had this problem before so i know
Answer:
The volume of the right rectangular prism is 12* 8.5 * 4 = 408 content density is 0.25 pounds
Step-by-step explanation:
