The figure shows trapezium ABCD. If the ratio of the area of ABCD to that of AABD is 4:7, find BC:AD

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

Which of the following equations are equivalent to -2m - 5m - 8 = 3 + (-7) + m? -15m = -4m -7m - 8 = m - 4 -3m - 8 = 4 - m m - 4 = -7m - 8 -8 - 7m = -4 + m -8 - 3m = 4 - m