Solve for x: two fifths(x − 2) = 4x. x = two ninths x = −2 x = negative two ninths x = negative nine halves

Which math sentence can be used to determine if the triangle is a right triangle?

Can someone me out here and the tell me the greatest common factor

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