(1) solve this system using the substitution method: y = 2x – 3; y = (1/2)x - 4 (2) solve this application problem using a system of equations: the owner of jeremy’s garage wants to fill a 55-gallon drum with a 20% winter mixture of antifreeze for is customers. how many gallons of 100% antifreeze should he mix with some 12% antifreeze mixture in order to fill the drum?

The equation y=mx+b is the slope-intercept form of the equation of a line. what is the equation solved for b? y-m=b y-mx=b y/mx=b y/m-x=b

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?

How many square centimeters of wrapping paper will be used to wrap the shoe box?