Use the following similar triangles (abc ~ def). if ac= 18 when df=19 and ab=15, what is de? solve mathematically. round your answer to the nearest tenth.

Ihonestly don’t understand this at all

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Yahir designs bracelets. he uses between 9 and 15 red and yellow beads in the ratio of 2 red bead to 5 yellow beads. drag the beads into the container to meet these requirements