Find the solution to the following system of equations using the substitution method: -3x-5y=-5 and 5x+2y=21

There is a line with slope 1/a going through the point (a, a²). find the equation of the line perpendicular to this line at this point. (don’t let this problem intimidate you! solve the problem as you would if i’d given you specific values. just use variables instead.)

In a 45-45-90 right triangle, what is the ratio of the length of one leg to the length of the other leg? а . 1: 2 в. 2: 1 с. 2: 1 d. 1: 1

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x