The true conditional statement, "if 1/2 (m∠abc) = m∠abd, then m∠abc = 2(m∠abd)," illustrates which property of equality?

1. addition property of equality

2. subtraction property of equality

3. multiplication property of equality

4. division property of equality

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

The number of students who ride a school bus is 110% of the number of students who walk. how many students ride the school bus?