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Precal unit 1
covers precalc unit 1
| Question | Answer |
|---|---|
| How to convert square yard to square feet? | 1 yd^2 to ft^2 3 ft per yard 3 ft by 3 ft is one square yard __ __ __ |__|__|__| |__|__|__| a 3 by 3 square is 9 ft. 1 yard^2= 9 ft^2 |__|__|__| |
| How many seconds in a day? | 1 day= 24 hours= 24 hours * 60 min * 60 sec ...................day.............1...day........1...Hr.......1..min |
| "p%" means? | P/100 |
| Percent | a whole or unit amount (sometimes implicit) |
| Percent of a number AKA p% of X | (P/100)* x |
| does it matter what order you multiply percents? | No |
| New cost= original cost-discount | used for finding discounts |
| Exponential decay model | (1-p/100)^2*original number being measured |
| If we take P% of an amount... | new amount= (percent as fraction)*(original amount) |
| If we increase original amount by p% then... | new amount= (1+ perfect as a fraction) * (original amount) |
| If we decrease an original amount by p% then... | new amount= (1- percent as a fraction) * (original amount) |
| "What percent of this amount is this other amount?" | partial amount =percent whole amount___100 also shown as percent= (partial amount/whole) * 100 |
| Cartesian Coordianate system is defined as | a coordinate system that specifies each point uniquely in a place by pair of numerical coordinates, which are the assigned distances to the point from two fixed perpendicular lines |
| Origin definition | the point where the two reference likes known as horizontal and vertical axis meet. |
| Horizontal line | x axis |
| Vertical line | y axis |
| Coordinate plane | the plane based on the x-axis and y-axis |
| Quadrant 1 | X= + y= + |
| Quadrant 2 | X= - y= + |
| Quadrant 3 | X= - y= - |
| Quadrant 4 | X= + y= - |
| A relation is... | a collection of ordered pairs. R={(x,y),(z,o),(5,4)} values are not interchangeable. (x,y) is in R but (y,x) is not |
| Input | X |
| Output | Y |
| Greater Than | > |
| Less Than | < |
Created by:
LemonGoon