Triangle rst is the image of a triangle under a dilation centered at the origin with a scale factor of -1/2 which point is the vertex of the pre-image of rst for this dilation?

a: (-2,-1)
b: (-4,-8)
c: (2,-1)
d: (8,4)

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?