-0.6 ÷ 3/4
1. 0.8
2. -0.8
3. -0.15
4. 0.15​

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

If 25% of y is 30, what is 60% of y?

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.