Name the following segment or point. Given: L, M, N are midpoints altitude to bc

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

4+(2+x) can you me solve this problem

Type the correct answer in each box. use numerals instead of words. if necessary, use / fir the fraction bar(s). the graph represents the piecewise function: h