Solve for x. Round your answer to the nearest tenth." X 42 15

Plz gelp

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.