9. Given the true statement: "If you did not forget your pencil, then you will not borrow one of mine." Which statement must also be true? (1 Point)

1.If you forget your pencil, then you will borrow one of mine.

2. If you borrow one of my pencils, then you did not forget your pencil.

3.If you didn't borrow one of my pencils, then you forgot your pencil.

4. If you borrow one of my pencils, then you forgot your pencil

However, the idea of real-life people living in what would become the united states for thousands of years before columbus ever left spain never dawned on me. what would be the best way to revise this sentence for greater clarity? a) however, the fact that columbus left spain thousands of years after people settled what would become the united states never dawned on me. b) it never dawned on me, however, the idea of real-life people living in what would become the united states for thousands of years before columbus ever left spain. c) however, the fact that people were already living in what would become the united states for thousands of years before columbus ever left spain never dawned on me. d) however, the idea never dawned on me that long before columbus ever left spain, real-life people lived for thousands of years in what would become the united states.

Read the excerpt from "death by black hole."albert einstein's general theory of relativity, published in 1916, provides the insight to understand the bizarre structureof space and time in a high-gravity environment. later research by the american physicist john a. wheeler, and others, to formulate a vocabulary as well as the mathematical tools to describe and predict what a black hole will do toits surroundings. read the excerpt from "man listening to disc."and i bow deeply to thelonious monkfor figuring out a wayto motorize or whatever-his huge pianoso he could be with us today. these excerpts are similar because both texts

How does tiresias prophecy affect the plot of the story ?