Answer:
y = 0
Step-by-step explanation:
Simplifying
0.1y = 15y
Solving
0.1y = 15y
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-15y' to each side of the equation.
0.1y + -15y = 15y + -15y
Combine like terms: 0.1y + -15y = -14.9y
-14.9y = 15y + -15y
Combine like terms: 15y + -15y = 0
-14.9y = 0
Divide each side by '-14.9'.
y = 0
Simplifying
y = 0
Answer:
17.8
Step-by-step explanation:
18 = 17.8 + 0.2
It would take 21 months for her to have exactly 1250
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.