Given b = 12, c = 15 and a = 60° in triangle abc, use the law of cosines to solve for a. fill in the blank(s) to complete each step. round your answer to the nearest hundredth. a2 = a0 + 152 - 2a1(15) cos a2° a2 = 144 + 225 - 360(a3) a2 = a4 a = a5

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

1. 25pi ft^2 2. 5pi ft^2 3. 10pi ft^2 3. 20pi ft^2

Which equation best represents the line?