Find the solutions to the system of equations by the addition method. +  = 4 - 2y = 21

A. (-6, -8)
B. (-6, 8)
C. (6, 8)
D. (6, -8)


Answer: D

Mathematics

You might also like to view...

Find the first 4 terms of the recursively defined sequence.a1 = -1, an + 1 = 2 ? an

A. -2, -4, -8, -16 B. 0, 5, -5, 0 C. -1, -2, -4, -8 D. -1, -5, 0, 5

Mathematics

Solve the problem.The lifespan for a pair of walking shoes is normally distributed with a mean of  steps and standard deviation of  steps. If a manufacture produces 6000 pairs of these shoes, how many can be expected to last for at least 732,800 steps?

A. ? 1391 pairs B. ? 1313 pairs C. ? 1205 pairs D. ? 1271 pairs

Mathematics

Solve the equation and check your solution.4.8 = x + 1.2

A. 4.00 B. -3.6 C. 3.6 D. 6.0

Mathematics

Provide an appropriate response.Why could (-5, -4) not be a solution of the system that is graphed?

What will be an ideal response?

Mathematics