Answer: 12.5 (Might be 13... Having half a page is weird)
475/38=12.5
as there are 20 creatures 80% of it is 16 .and 20% is 4 . spiders have 8 legs and flies have 4.so total legs are 16×4+4×8=96.so % of spider legs are (32÷96)100=33.333333333
Answer:
Vertex is (-2.5, - 13.25) and x=(-5±sqrt(53))/2
Step-by-step explanation:
x^2+5x-7
x^2+5x+(2.5)^2-(2.5)^2-7
(x+2.5)^2-13.25. Vertex is (-2.5, - 13.25)
Solution of the functions are x=(-5±sqrt(53))/2