math midterm 2015 Flashcards Preview

Allie's Flashcardlet > math midterm 2015 > Flashcards

Flashcards in math midterm 2015 Deck (75):
0

Numbers are divided into eight categories. List them

Natural, whole, integer, rational, irrational, real, imaginary, and prime

1

1,2,3,4,...,infinity

Natural

2

Symbol for Natural numbers

N

3

0, 1, 2, 3,…, Infinity

Whole

4

What is the symbol for whole numbers

W

5

-infinity,....., -2, -1, 0, 1, 2,.....Positive infinity

Integer

6

What is the symbol for integer

Z

7

Fractions whose decimals either terminate or repeat
Ex) .25 or .7777777778

Rational

8

What is the symbol for a rational numbers

Q

9

Fractions is decimals do not repeat or terminate

Irrational

10

All numbers except imaginary numbers

Real numbers

11

Numbers containing an ℹ️

Imaginary

12

ℹ️equals the _________ and ℹ️squared equals ___

square root of negative one; -1

13

Number is divisible by one and itself

Prime numbers

14

In the product rule you blank like bases and blank exponents

Multiply; Add

15

In the quotient rule you blank like bases and blank exponents

Divide; Subtract

16

In what rule did you multiply the powers (exponents)

Power rule

17

When you have a negative exponent, what do you do to make it positive

Change floors

18

With a blank, the denominator goes to the hoopy-hoo and the numerator becomes the power

Rational exponents

19

With a zero exponent, anything raised to the zero power is

One

20

What is Valentine's Day and St. Patrick's Day

The square root of two equals 1.4
The square root of three equals 1.7

21

To add and subtract fractions what do you do

Find common denominator and add the numerator

22

To multiply fractions…

You multiply across the numerator and the denominator her and simplify your answer

23

How do you divide fractions

When dividing fractions don't ask why flip the second and multiply

24

What is the acronym for changing improper fractions to mix numbers

MA! (multiply up to the left, add up to the right)

25

How do you change improper fractions to mixed numbers

Divide the numerator by the denominator, put the remainder over the denominator

26

What is the base form of scientific notation

a x 10^n

27

In scientific notation, "a" must be between……

One and nine

28

If the exponent is positive, move the decimal to…

The right

29

Is the exponent is negative, move the decimal to…

The left

30

Change scientific notation to a blank when you can

Decimal

31

Logx y=b means

x^b=y

32

Log32=5 means x^5=32 and solve

x^5=2^5
x=2

33

If a variable is in the exponent, Find blank and set the blank equal

Like bases; exponents

34

A line equals

180°

35

All triangles are

180°

36

Supplementary angles equal

180°

37

Circles equal

360°

38

A right angle equals

90°

39

Complementary angles equal

90°

40

To find the interior angle measure of a polygon use this formula

(n -2) x 180°

41

The "n" in the interior angle measure of a polygon formula represents

The number of sides of a polygon

42

P equals; A equals; C equals; r equals; d equals; h equals; L equals; w equals

P = perimeter; A = area; C = circumference; r = radius; d = diameter; h = height; L = length; w = width

43

Which triangle has two equal sides and two equal angles

Isosceles triangles

44

If two sides of an isosceles triangle are congruent, the two opposite blank are also congruent

Angles

45

Which triangle has three equal sides

Equilateral

46

In an equilateral triangle, all angles equal

60°

47

Only use pythagorean theorem in _____ triangles to find the _________

Right; missing side length

48

What is the Pythagorean theorem formula

a^2 + b^2 = c^2

49

A and B represent blank and form blank

The legs of a triangle; right angle

50

C represents blank which is the side opposite of the blank

Hypotenuse; right angle

51

Three numbers his lengths can form a right angle

Pythagorean triples

52

What are the three most common Pythagorean triples

3–4–5, 5–12–13, 7–24–25

53

What are the two special right triangles

45 – 45 – 90, and 30 – 60 – 90

54

In a 45-45-90 triangle the legs are blank in the hypotenuse is blank

S; S x square root of two

55

In a 30-60-90 triangle, the short leg equals blank, the long leg equals blank, and the hypotenuse equals blank

S; S x square of three; 2S

56

What is the standard form of linear equations

Ax + By = C

57

How do you graph a linear equation

Find the intercepts

58

How do you find the intercepts of linear equations

To solve for the X intercept, plug zero in for y.
To solve for the Y intercept, plug zero in for x.

59

What is the most common form of linear equations

Slope intercept: y = mx + b

60

How do you graph slope intercept

Plot the Y intercept and you slope to find the second point

61

What does m represent in slope intercept

Slope

62

What does B represent and slope intercept

Y intercept

63

What is the formula for slope

M= y2 - y1 divided by x2 - x1

64

What is the midpoint formula

(x2 + x1 / 2, y2 + y1 / 2)

65

What is the distance formula

D = square root of (y2 - y1)^2 + (x2 - x1)^2

66

What is the formula for a parabola

y = x^2

67

What is the equation of a circle

(x - h)^2 + (y - k)^2 = r^2

68

What do H and K represent in the formula of a circle

(H, K) = center of the circle

69

What is the acronym for remembering trig functions

SOHCAHTOA

70

Sin theta =

Opposite over hypotenuse

71

Cos theta =

Adjacent over hypotenuse

72

Tan theta =

Opposite over adjacent

73

What are the Pythagorean identity equation

sin^2 theta + cos^2 theta = 1
tan^2 theta – sec^2 theta = 1
csc^2 theta – cot^2 theta = 1

74

Which is better math or English

English

Decks in Allie's Flashcardlet Class (69):