GRE Math Fundamentals
Terms
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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