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### 54 Cards in this Set

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 x to the 0 1 x to the 1 x 0 to the x 0 1 to the x 1 x to the -2 1/x2 how do you multiply two exponents with the same base? add the exponents how do you divide two exponents with the same base? subtract the exponents how do you raise one exponent to another? multiply the exponents what do you get when you raise a negative number to an even exponent? a positive number what do you get when you raise a negative number to an odd exponent? a negative number when can you add or subtract roots? when the number under the radical is the same how do you multiply or divide roots? multiply inside and multiply outside rule of divisibilty for 2 any even number rule of divisibility for 3 sum of the digits is divisible by 3 rule of divisiblity for 4 if last two digits are divisible by 4 rule of divisibility for 5 ends in 5 or 0 rule of divisibility for 6 if its even and the sum is divisible by 3 rule of divisibility for 8 last three digits divisible by 8 rule of divisibility for 9 sum of digits is divisible by 9 rule of divisibility for 10 ends in 0 When do you reverse the sign of an inequality? When you multiply or divide by a negative number. expand(x+y)(x-y) x2 - y2 factor x2 - y2 (x+y)(x-y) expand (x+y)2 x2 + 2xy + y2 factor x2 + 2xy + y2 (x+y)2 expand (x-y)2 x2 - 2xy + y2 degrees in a straight line 180 degrees in a parallelogram 360 degrees in a triangle 180 degrees in a circle 360 what is fred's theorem? when a line crosses 2 parallel lines, all big angles are equal, all small angles are equal area of a parallelogram a=bh largest angle of a triangle is... opposite the largest side smallest angle of a triangle is... opposite the smallest side isosolece triangle has... 2 equal sides w/ 2 equal angles equalateral triangle has... 3 equal sides w/ 3 equal angles area of a triangle is... a=1/2bh Third side rule of a triangle is... a-b < c < a+b diameter of a circle d = 2r cirumfrence of a circle c = 2 pie r area of a circle a = pi r2 Mean Average Median Middle # or average of two middle #s Mode # that appears most frequently in a set Range Difference between highest and lowest number Give the 5 sets of pythagorean triples 3,4,5 6,8,10 60,80,100 5,12,13 7,24,25 What are the side relationships in a 30:60:90 triange? 30 - a 60 - a sq.rt. 3 90 - 2a What are the side relationships in a right isosolece triangle? a, a, a sq.rt. 2 What is the approx value of the square root of 2? 1.4 What is the approx. value of the square root of 3? 1.7 coordinates for the x-intercept (x,0) coordinates for the y-intercept (0,y) slope change in y / change in x Unpack y=mx+b y = (slope)x + y-intercept