A12-ft. ladder is leaning against a wall and makes a 77 angle with the ground. how high does the ladder reach up the wall?

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

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. what distance from city a is the point where the truck and the car will meet?

Factor the polynomial expression x6 – x3 – 20