If these two shapes are similar what is the measure of the missing length r? r = _ kilometers​​

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days