The answer is 900
900/90=10. Therefore 90/900=1/10
41-28=13 questions, but you also have to do 41 and 28, so 15 questions
It c) because it 56 out of 100
Answer:
A=132
Step-by-step explanation:
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=3·10+4·10+5·10+1
2·﹣34+2·(3·4)2+2·(3·5)2﹣44+2·(4·5)2﹣54=132
