Elliot has a total of 26 books. he has 12 more fiction books than nonfiction books. let x represent the number of fiction books. which equation represents the situation?

x =fiction books

non fictions books = fiction books -12

non fiction = x-12

total books =26

total books = fiction + non fiction

26 = x + x-12

combine like terms

26 = 2x-12

add 12 to each side

38 = 2x

divide each side by 2

19 =x

Elliot has 19 fiction books

19-12 =7

Elliot has 7 non fiction books

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.