Solve using the substitution method. Use a graphing calculator to check your answer. x + y = -5x - y = 7
A. (1, -6)
B. (-1, -5)
C. (0, -5)
D. No solution
Answer: A
Mathematics
You might also like to view...
Factor the expression. Express your answer so that only positive exponents occur. x-3/7 - x-4/7
A. x-4/7(x1/7 - 1) B. x-4/7(x1/7 - x) C. x-4/7(x1/7 + 1) D. x-4/7(x1/7)
Mathematics
Build a variable expression for the given phrase.Three less than 21 times a number
A. 3 - 21x B. 21 - 3x C. 21x - 3 D. 21(x - 3)
Mathematics
Rewrite the given expression using exponential notation.14 ? 14 ? 14
A. 3 ? 14 B. 314 C. 141 D. 143
Mathematics
Determine whether the vectors v and w are parallel.v = 
, w = 
A. Not parallel B. Parallel
Mathematics