Find the value of k if the length of the tangent from the point (1, 2) to the circle x²+y²+x+y-4 = 0
and 3x² + 3y²-x-y-k = 0 are in the ratio 4:3.

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

14 pointslet x be the seats in the small van and y the seats in the large van. how many seats does the large van have? a company uses two vans to transport worker from a free parking lot to the workplace between 7: 00 and 9: 00a.m. one van has 9 more seats than the other. the smaller van makes two trips every morning while the larger one makes only one trip. the two vans can transport 69 people, maximum.how many seats does the larger van have?

Ten times the square of a non-zero number is eqaul to ninety times the number