Two numbers aand b are such that rhe sum of 5% of a and 4% of b is 2/3 of the sum of 6% a and 8% of b find the ratio of a and b

Which statement best describes the polynomial

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x