1) a student uses the substitution method to solve the system of equations below algebraically.

2x - y = 5
3x + 2y = -3

which equivalent equation could be used?

(a) 3x + 2(2x - 5) = -3
(b) + 2(5 - 2x) = -3
(c) 3(y + 5/2) + 2y = -3
(d) 3(5/2 - y) + 2y = -3

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

Select all expressions that are equivalent to 2(3x + 7y). question 1 options: 6x + 14y 6x + 7y 1(6x + 14y)

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.