What rule would result in the displayed transformation? A: Rule: (x, y)=>(-x, y)
B: Rule: (x, y)=>(x, y-2)
C: Rule: (x, y)=>(x+1,y+5)
D: Rule: (x, y)=>(x,-y)
E: Rule: (x, y)=>(-x-4,y)
F Rule: (x, y)=>(x,-y-2)
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Find the value of the cosine for angle a

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.