4x+2y-1 divided by 4y+3

The tangent of an angle is not which of the following? a) ratiob) proportionc) fractiond) opposite over adjacent

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

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76