Suppose y varies directly with x. if x is -7 when y is 3, what is x when y is -5?

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?