The sum of three consecutive even numbers is 78. what is the first number

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

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

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?