PSAT prep

vocab, grammar rules, formulas, etc

lucid

clear, easy to understand

astute

clever, perceptive

benevolent

kind, with good intentions

cynical

distrustful of others’ motives

ambiguous

unclear, having multiple meanings

collective nouns

use singular verb - neither of the students is ready for the test

each/neither/every

singular - each student is ready

parallel structure

keep verb forms consistent - runnING, swimmING, bikING

slope formula (2 points)

m = y2-y1/x2-x1

percent change

new - old/old * 100

mean

average - add all and subtract by the total amt of numbers

median

the number in the middle - if two are in the middle, take the average of the 2

mode

the number that appears the most in the sequence

range

maximum # - minimum #

how to tell if a triangle is right

if the squares of a and b are equal to the square of c, it is right

find radius from circumference

plug in circumference, divide 2 pi from both sides

most concise answer rule

shortest, grammatically correct is best

by the time we arrived, the movie _ started.

had

neither of the teams ____ playing

is

ambivalent

mixed feelings about something or someone

who vs whom

who = subject; whom = objec

the modifier must…

match the subject

which equation has no solution?

when both sides equal but constants differ (2x-5=2x+3)