If a1 =5 and an=-3an-1 then find the value of a5

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

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