Identify each expression as equivalent to either 2(3x+7y) or 1/2 (12x+14y) 6x+7y

6x+14y

(2x+3y) + 4(x+y)

(2x4y) + 2 (2x+5y)

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

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.

Which number line correctly shows 0.8 + 0.3?