4. let f r-z defined by f(x)= 5 |. show that f is not one-to-one by exhibiting a counterexample. 5 pts. counterexample: let y -2 the tt 2 such that 5 2 10 shows that 5 all evel intqeus renot to-one one note 1.2, 1. 3 er and 12/3 -5 you shad fat f2) = f(l3 c(t001'1331) let f: r-r defined by f(z) = x2 - 2. show that f is not onto by exhibiting a counterexample. [you cannot use the reason that the codomain the range]. note 5. 5 pts. counterexample: 36e r, he codma 2 bat fz)= x ryou shw fhat kr, dhe domain

i you goofed up when writing this, because hnot is not a word minusf is not either. i cannot answer   because of that.

step-by-step explanation:

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.

h= 12 inches

step-by-step explanation:

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.