Again, please help? I’ll help u with ur work too :)

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

Tom drove 206 miles in 3.9 hours. estimate his average speed.

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?