Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x? 1 plus-or-minus StartRoot 21 EndRoot i Negative 1 plus-or-minus StartRoot 19 EndRoot i 1 plus-or-minus 2 StartRoot 19 EndRoot i 1 plus-or-minus StartRoot 19 EndRoot

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)