21/40 = 0.525
0.525 = <em>52.5%</em>
In standard form it would be y= 5x - 4
Idk u need to figure it out yourself instead of asking other people
The area is 81*pi-162. Look at the triangle formed by the chord and the two radii connected to the endpoints of the chord. Since 18^2+18^2=(18*\sqrt2)^2, this is an isosceles right triangle by Pythagorean theorem. The area of the quarter circle containing the region we look for is pi*18^2/4=81*pi. The area of the right triangle is 18*18/2=162. The difference between these two areas, or 81*pi-162, is the area of the smaller region.
Answer:
An expansion is characterized by increasing employment, economic growth, and upward pressure on prices.
