If roots of the equation a/x-a+b/x-b=1 are numerically equal and opposite sign then
​

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

If you answer 2+2 you will get over 80 points

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)