Let F(x, y,z) = (x−z)i+ 0j+xk. Evaluate ∫CF·dr, where C is the half circle of x^2+z^2= 1 (on the xz-plane), beginning at (1,0,0) to (0,0,1) to (−1,0,0).

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

What is the slope of the line shown below?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?