Find the sum or difference. Write the answer in standard form.(-1 + 9i) - (6 + 5i) - (-3 + 7i)
A. -10 + 11i
B. -4 + 21i
C. -4 - 3i
D. 2 + 21i
Answer: C
Mathematics
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Find all natural number factors of the number.13
A. 1, 2, 3, 4, 6, 13 B. 1, 2, 6, 13 C. 1, 2, 4, 4, 6, 13 D. 1, 13
Mathematics
Solve by the substitution method.x + 6y = 505x + 5y = 50
A. (-2, 9) B. (1, 9) C. No solution D. (2, 8)
Mathematics
Use the quadratic formula to find any x-intercepts on the graph of the equation.y = 2x2 + 12x + 3
A. 
B. 
C. 
D. None
Mathematics
Solve.A community garden contains 35 rectangular plots each measuring 6 yd by 10 yd. What is the total area available for gardening?
A. 1120 yd2 B. 2100 yd2 C. 60 yd2 D. 2135 yd2
Mathematics