Basic Concepts Flashcards

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1
Q

a is

A

a is negative
a=0
a is positive

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2
Q

|3|=

|-3|=

A

3

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3
Q

The only number that is equal to its opposite is

A

0

a-b=-(a-b)

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4
Q

Sum

A

Addition +
16 is the sum of 12 and 4
16=12+4

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5
Q

Difference

A

Subtraction -

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6
Q

Product

A

Multiplication

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7
Q

Quotient

A

Division

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8
Q

The product and quotient of two positive numbers or two negative numbers are

A

POSITIVE

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9
Q

The product and quotient of a positive number and a negative number are

A

NEGATIVE

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10
Q

The product of an EVEN number of negative factors is

A

POSITIVE

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11
Q

The product of an ODD number of a negative factor is

A

NEGATIVE

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12
Q

The sum of two positive numbers is

A

POSITIVE

6+2=8

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13
Q

The sum of two negative numbers is negative

A

NEGATIVE

(-6)+(-2)=-8

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14
Q

The sum of a positive and a negative number

A

Find the difference of their absolute values and use the sign of the number with the largest absolute value
6+(-2)=4

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15
Q

The sum of ant number and its opposite is 0

A

a+(-a)=0

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16
Q

Subtracting a number is the same ad adding its opposite

A

a-b=a+(-b)

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17
Q

Dividing by a number is the same ad multiplying by its reciprocal

A

a/b=ax(1/b)

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18
Q

Consecutive integers

A

Two or more integers written in a sequence in each integer is 1 more than the preceding integer
22,23,24

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19
Q

Integers

A

….-1,0,1….

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20
Q

Prime number

A

A number that can only be multiplied (divisible) by one and itself and is greater than 2,3,5,7,11,13,17,19,23,29
**DOES NOT INCLUDE 1

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21
Q

Triangle 12,13__

A

5

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22
Q

Special right triangle

3,4,___

A

5

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23
Q

Right triangle 30-60-

A

90

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24
Q

Right triangle

45-45__

A

90

25
Q

Area of a circle

A

A= π × r2.

26
Q

Composite number

A

Positive integer greater than 1 that are not prime

27
Q

0^2

A

0

28
Q

1^2

A

1

29
Q

2^2

A

4

30
Q

3^2

A

9

31
Q

4^2

A

16

32
Q

5^5

A

25

33
Q

6^2

A

36

34
Q

7^2

A

49

35
Q

8^2

A

64

36
Q

9^2

A

81

37
Q

100^2

A

100

38
Q

11^2

A

121

39
Q

12^2

A

144

40
Q

13^2

A

169

41
Q

14^2

A

196

42
Q

15^2

A

225

43
Q

Area of a square

A

A=s^2

44
Q

Median

A

The middle value of an ordered sequence of values

45
Q

When 2 chords intersect inside a circle

A

The segment formed have lengths such that the product of the segment length is the same number for each chord

46
Q

Perimeter of rectangle

A

P=2l+2w

47
Q

Area of rectangle

A

A= l x w

48
Q

Quadratic equation

A

In mathematics, a quadratic equation is a univariate polynomial equation of the second degree. A general quadratic equation can be written in the form
ax^2 + bx + c = 0

49
Q

For any positive numbers

a and b

A

(a + b)^2 > a^2 + b^2

50
Q

Any number a,b,c:

A

a(b+c) = ab +ac

51
Q

60 seconds = ______

A

1 minute

52
Q

60 mins = _____

A

1 hr

53
Q

24 hrs =_____

A

1 day

54
Q

365 days = _____

A

1 year

55
Q

100 years = ____

A

1 century

56
Q

Ex. Isosceles triangle

A

70, 70, 40

57
Q

How do you get rid of SQRT?

--—–

A

SQRT it

( )^2

58
Q

Area of triangle

A

A=bh/2

Base X Height / 2