If you put 3/7 as a decimal what is the 351st number of the decimal

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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

Is the power produced directly proportional to the wind speed, give reasons for your answer?