Scientific notation what is
0.348 in scientific notation

How do you use the elimination method for this question? explain, because i really want to understand!

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days