Math Flashcards

1
Q

The average set of numbers.

A

Mean

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2
Q

The middle number in a set of data

A

Median

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3
Q

The number that occurs most often

A

Mode

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4
Q

The difference between the smallest data value and the largest

A

range

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5
Q

Have exactly 2 factors: 1 and itself

A

prime numbers

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6
Q

Have more than 2 factors

A

composite numbers

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7
Q

can be written as a ratio of 2 integers where the denominator is not 0
REPEATING decimals
0.68, 5, 1.5, 20, 0.686868, 0.123123123

A

rational

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8
Q

Cannot be written as a ratio of 2 integers
square root of 2, pie, square root of 5
NON-REPEATING decimals

A

irrational

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9
Q

Includes 1,2,3,4

A

Natural

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10
Q

Includes 0, 1, 2, 3

A

Whole numbers

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11
Q

x^m/n = n (square root (x))^m

A

nice

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12
Q

slope-intercept form

A

y=mx+b

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13
Q

Standard form

A

ax+by=c

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14
Q

The cost of a ticket and dinner is

A

t+d=

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15
Q

Pat ate 5 candies for every 2 that Marvin ate

A

p/m=5/2

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16
Q

the difference between Sara’s salary and pat’s salary is $100

A

Is-pI=100

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17
Q

Peter is 4 years older than Lauren

A

p=L+4

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18
Q

The discount is 25% off price p

A

d=.25p

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19
Q

What percent is

A

x/100

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20
Q

3 consecutive integers

A

x, x+1, x+2

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21
Q

3 consecutive even integers

A

even x, x+2, x+4

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22
Q

3 consecutive odd integers

A

odd x, x+2, x+4

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23
Q

Review Matrices

A
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24
Q

log25 5=

A

logb a=x
b^x=a
1/2

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25
Corresponding angles are __________. which means must use with
congruent the same parallel lines
26
Alternate angles are ________. which means must use with
congruent are the same parallel lines
27
Interior angles on the same side of a transversal are________. which means____. must use with
supplementary add up to 180 parallel lines
28
Vertical angles are formed when two lines intersect. Vertical Angles are ________. which means must use with
congruent=same parallel lines
29
Review Plane and solid geometry
30
Area of a circle
pie r^2
31
Circumference of a cirlce
2 pie r or pie d
32
Draw a equilateral triangle
equal sides
33
draw a isosceles triangle
two sides equal two angles equal
34
Draw a scalene triangle
none equal
35
Draw a right triangle
right angle
36
Pythagorean theorem
a^2 + b^2 = c^2
37
45-45-90
a=b c=a square root 2
38
30-60-90
b=a square root 3 c=2a
39
Surface area of a cylinder
2 pie r^2 + 2 pie r h
40
Distance formula
square root (x2-x1)^2 + (y2-y1)^2
41
Midpoint formula
(x1+x2)/2 , (y1+y2)/2
42
Slope formula
change in y/change in x (y2-y1) / (x2-x1)
43
Point slope form slope=4 point= (1,3)
y-y1=m(x-x1) y-3=4(x-1)
44
parallel lines have the _______ slope
same y=2/3x-2 y=2/3x+4
45
Perpendicular lines have the _____ ________ slope
negative reciprocal y=3x-4 y= -1/3x+2
46
Find the radius and center of the circle from this equation (x+2)^2 + (y-3)^2 = 49
(x-h)^2 + (y-k)^2 =r^2 (-2, 3) r=7
47
Sine
o/h
48
Cosine
a/h
49
Tangent
o/a
50
cosecant
1/sin or h/o
51
secant
1/cosine or h/a
52
cotangent
1/tangent a/o
53
y=A sin (f(x-h)) + B
A=amplitude f=frequency B= midpoint h=horizontal shift
54
For ax^2+bx +c=0 whats the quadratic formula?
x=(-b+- sqaure root (b^2-4ac))/2a
55
Distance =
rate times time
56
percent change formula
(new-old)/old x 100
57
Arc length formula
angle/360 x 2pie r or AL=r x angleSe
58
Sector area formula
angle/360 x pie r^2 or 1/2 r^2 angle
59
Area of parallelogram
bh
60
Area of trapezoid
1/2(b1+b2)h
61
Area of triangle
1/2 bh
62
area of a cube
6s^2
63
volume of cube
s^3
64
volume of rectangular prism
lwh
65
volume of culinder
pie r^2 h
66
volume of sphere
4/3 pie r^3
67