Question

Twice a number (x) is less then 10

Answer 1

If you're looking for the equation, it's 2x<10.

Twice x would be 2 * x, because it's x two times, which would be said as 2x. 

Less then 10 would be <10, because the sign (<) is the less than sign and 10 follows it. 

So it would be 2x < 10.