Front Side of Flash Card..two integers 41 lies between… *to find an answer… Back Side of Flash...
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Transcript of Front Side of Flash Card..two integers 41 lies between… *to find an answer… Back Side of Flash...
Front Side of Flash Card
..two integers √41 lies between…
*to find an answer…
Back Side of Flash Card
•Choose a perfect square SMALLER and BIGGER than 41
•The square root of both #’s is the answer
Front Side of Flash Card
Decimal to Percent
Percent to Decimal
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•DP : move decimal 2 spaces RIGHT
•PD : move decimal 2 spaces LEFT
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Probability of multiple coin flips
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•Multiply probabilities each coin flip
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Increase by a scale factor #
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•Means you multiply original value by factor #
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Parallel Slopes
Perpendicular Slopes
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•Both lines have the same slope.
•Both slopes are the OPPOSITE RECIPROCAL of each other
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What is the best test-taking strategy?
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•TAKE YOUR TIME, GO SLOWLY, AND DON’T OVER-THINK THE PROBLEM!!1!
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Calculating % commission of a price (total commission)
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•Convert % to decimal
•Multiply that by the price
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Properties of parallelograms
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•2 parallel sides with the same length
•2 other sides that have the same length (usually at an angle)
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Calculating the y-intercept
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•Plug in 0 for x and then solve for y.
•Answer: ( 0 , )
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What is the equation of a line when given point and slope?
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•Use the point-slope formula:
•Plug in values and solve for y.
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Graph y=x^2
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•x^2 is a parabola facing upwards•Positive coefficient
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Graph y = -x^2
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•-x^2 is a parabola facing downwards•Negative coefficient
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Graph y = -x^3
Cubic Function
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•S-shaped graph•Looks like negative slope
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Graph y = x^3
Cubic Function
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•S-shaped graph•Looks like positive slope
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…vehicle traveling at a certain speed……distance against the wind, and greater distance with the wind…
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•Use rt=d formula•Wind will be added and subtracted from original speed
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Polygon Similarity
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•Polygons need to have the same angles
•Segment lengths must be in proportion to each other
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Polygon Congruence
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•Polygons need to have the same angles
•Segment lengths need to be the same
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Calc. missing length of a triangle:
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•Pythagorean Theorem
•Triangle needs to have 90* box•Hypotenuse (c) opposite 90* box
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Solving SYSTEMS of linear equations
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•Plug in x and y values to both equations.•Correct answer when both sides equal 5 = 5
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Negative exponents… what do you do??
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•Reciprocal the number •Make the exponent positive•Simplify
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Order of Operations
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•Follow PEMDAS
•Simplify MD and AS from left right
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Adding multiple fractions
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•Make common denominators first•Add fractions and simplify
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Positive slopes and correlations
Negative slopes and correlations
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Positive Right side facing upwards
Negative
Right side facing downwards
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Multiplying same base exponents
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•Add exponents
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Dividing same base exponents
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•Subtract exponents•Upstairs guy minus downstairs guy•Reciprocal any negative exponents
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Exponents outside the parenthesis
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•Exponents multiply•Coefficients and some variables have an invisible 1 exp.
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Mean
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•Average•Add up all data points and divide by # of points
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Median
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•Line up all data points (smallest to largest)•Pick the guy in the middle (find the mean if there are 2 in the middle)
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ModeModal
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•# in a data set that you see most often•{1, 2, 2, 3, 2} mode=2
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Absolute value equation
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•Should have 2 answers•{ # , # }
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Dependent events
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•Something can only happen if something else happens
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Independent events
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•Something happening has no effect on something else happening
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Sci. Standard Notat.
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•Positive Exponent: MOVE DECIMAL RIGHT
•Negative Exponent: MOVE DECIMAL LEFT
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Standard Sci. Notat.
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•Little number (decimal): MOVE DECIMAL RIGHT
•Big number (#>1): MOVE DECIMAL LEFT
•Only 1 digit up front!
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Area Formulas
Back Side of Flash Card
•Include all of your geometry flash cards.