3) The weight of father is four times than the weight of his son. If the weight of son is 15 kg, what will be the weight of the father?​

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

(60 points) explain this in detail

What is the approximate value of  x  in the equation below.–3.396–0.7080.3040.955