Which equation can be used to solve for x in the following diagram? 80°
2°
Choose 1
3r + 80 + 2 = 90
80 - 32 - 2= = 90
3= + 80 + 2 = 180
3 + 2 = 80

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Acircle has a circumference of 7.850 units. what is its radius?

Atorch and a battery cost 2.50 altogether. the torch costs 1.50 more than the battery. what fraction of the total price is the torch? give your answer in its simplest form.