PLS SHOW WORK WILL GIVE BRAINLIEST Gianna buys a book for $12 and a poster for $15. Posters are on sale for 20% off. Sales tax is 9%. Which expression will calculate the cost of Gianna’s purchase?

A. 12 + 15 - 0.80 + 1.09
B. 12 + 15(0.80)(1.09)
C. (12 + 15)(0.80)(1.09)
D. (12 + 15 ● 0.80)(1.09)

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

Abdul is making a map of his neighborhood he knows the following information: his home, the middle school, and high school are all on the same street. his home, the elementry school, and his friends house are on the same street. the angle between the elementary school, middle school, and his home is congruent to the angle between his friends house, the high school, and his home. what theorem can abdul use to determine the two triangles are similar? a- side side side similarity theoremb- angle angle similarity theoremc- corresponding parts of similar triangles are congruentd- pieces of right triangles similarity theorem