Which number is 10 times as great as 0.057? *

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

The line containing the midpoints of the legs of right triangle abc where a(-5,5), b(1, 1), and c(3, 4) are the vertices.

Find the value of the variable and the length of each secant segment.