What is 3,920,000,000,000 in scientific notation? 3.92×10103.92×10^10 3.92×10123.92×10^12 3.92×10−103.92×10^−10 3.92×10^−12

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

Which one ? is the answer and how to find this answer

Write the pair of fractions as a pair of fractions with a common denominator