Which of the following expressions has a positive value? A. (13 - 9 - 8) x 3
B.(13 - 9 - 8) X (-3)
C. -(-19) (-15)
D. (9 - 16 + 8) +(-3)

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

The sum of two numbers is 86, and their difference is 20. find the two numbers

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?