To answer this, we need to start with the standard equation for an ellipse:
(x^2/a^2)+(y^2/b^2)=1
Where a is one half of one axis, and b is one half of the other.
The problem states that one axis is 1057 ft, and the other is 880 ft, so divide these values by 2 and square them. This results in:
(x^2/279,312.25)+(y^2/193,600)=1
For verification, if you have a graphing calculator, solve for y, set the size of the window so it should perfectly fit the ellipse, and check (it does)
The height of the umbrella would be 8 feet. Going by the 45, 45, 90° rule, the legs would be equal sizes which would make the height 8 feet.
Answer:
Step-by-step explanation:
Given is a pentagon. It has 5 sides
Answer:
9/16 10/16 11/16 12/16 13/16
Step-by-step explanation:
Answer:
P = 95%
Step-by-step explanation:
The average is:
The standard deviation is:
.
We want the probability that the red light lasts between 2.5 minutes and 3.5 minutes
This is:
Now we must transform these values to those of a standard normal distribution to facilitate calculation by using the probability tables.
This is:
---------- (By the symmetry of the standard normal distribution)
When you search for the normal standard table, you get the following value:
