On a coordinate plane, vector v has a magnitude of 6 miles per hour in a northwesterly direction. What are the magnitude and direction of 2(−v)? A 12 miles per hour in a northwesterly direction B 8 miles per hour in a southeasterly direction C 12 miles per hour in a southeasterly direction D 8 miles per hour in a northwesterly direction

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?

Parallelogram rstu is a rhombus. m∠r = 120° what is m∠t = 120 (what is m∠rsu? )