Answer:An arithmetic sequence is a sequence with the difference between two consecutive terms constant. The difference is called the common difference. A geometric sequence is a sequence with the ratio between two consecutive terms constant. This ratio is called the common ratio.
Step-by-step explanation:
An arithmetic sequence is a sequence with the difference between two consecutive terms constant. The difference is called the common difference. A geometric sequence is a sequence with the ratio between two consecutive terms constant. This ratio is called the common ratio.
A - area of a trapezoid; a, b - two bases. A = h * ( a + b ) / 2 / * 2 ( we have to multiply both sides by 2 ) 2 A = h *( a + b ) 2 A = h a + h b h b = 2 A - h a b = ( 2 A - h a ) / h b = 2 A/h - a Answer: D )
