One equation in a system of equations is y 5 2··3x 2 5. For which second equation would the system have exactly one solution? Choose all that apply. A y 5 3x 1 5 B y 5 5x 1 2··3C 3y 5 2x 1 4 D 2y 5 3x 1 7 E y 5 2 1 1··3x 2 15 2

Solve the system by the elimination method. 3x - 2y - 7 = 0 5x + y - 3 = 0 to eliminate y, the lcm is 2. which of the following is the resulting equations? 1.3x - 2y - 7 = 0 5x + y - 3 = 0 2.3x - 2y - 7 = 0 -10x - 2y + 6 = 0 3.3x - 2y - 7 = 0 10x + 2y - 6 = 0

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

Average acceleration: i have no idea how to do this.