Cuáles son las soluciones de la ecuación trigonométrica sen 2x + sen x = 0 para π≤ x ≤3π2​

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.