Explanation:
we find the root of x² + x + 1 has it can't be factorized
Using quadratic formula:
for a² + bx + c = 0
comparing: x² + x + 1
where a = 1, b = 1, c = 1
a. The general equation for a circle centered at with radius is
The described circle has equation
We know the circle passes through the origin. This means that the equation above holds for and . The distance between any point on the circle and its center is the radius, so we can use this fact to determine :
So the circle's equation is
b. If the distance between point B and the center is less than , then B lies inside the circle. If the distance is greater than , it falls outside the circle. Otherwise, if the distance is exactly , then B lies on the circle.
The distance from B to the center is
, so , which means B falls outside the circle.
410/5 = ?
410/5 = 82
82 miles per hour
82*12 = ?
82*12 = 984
Answer: 984 miles in 12 hours
20
5 and 4 have no common factors until they are multiplied by each other. So if you were to convert your existing measurements, you would do the following.
(3/4) x (5/5)
(2/5) x (4/4)
Giving you 15/20 and 8/20
Z would mean 0 considering they would both be the last