Math Flashcards

1
Q

Prime numbers

A

A number that can’t be divided by another number other than 1 and itself.

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2
Q

Composite number

A

A number that can be divided by 1, itself, and at least one other whole number

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3
Q

Factors

A

When a whole numbers has other divisors besides 1 and itself, these others divisors are called factors

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4
Q

N factorial

A

The product of every number between a number and another number multiplied together. The symbol is x!

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5
Q

Reciprocal

A

The number that you multiply by a number to get 1. Or the Inverse of a value or number such as 1/2 to 2/1

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6
Q

Mixed number

A

A number that is made up of a whole number and a fraction

For example 5 1/2

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7
Q

What is angle of elevation and angle of depression?

A

The term angle of elevation denotes the angle from the horizontal upward to an object. An observer’s line of sight would be above the horizontal. The term angle of depression denotes the angle from the horizontal downward to an object. An observer’s line of sight would be below the horizontal.

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8
Q

Sinusoidal

A

they have a wavy shape that repeats periodically. Tan(x) also repeats periodically, but its graph has discontinuities (places where the function is not defined) and vertical asymptotes.

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9
Q

Asymptote

A

ˈasəm(p)ˌtōt/

a line that continually approaches a given curve but does not meet it at any finite distance.

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10
Q

What are amplitude, midline, and period?

A

Amplitude, midline, and period are all terms we use to describe sinusoidal graphs. Amplitude is the height of the wave from the midline, midline is the horizontal line around which the wave oscillates, and period is the length of one complete cycle.

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11
Q

Constant

A

a quantity or parameter that does not change its value whatever the value of the variables, under a given set of conditions.

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12
Q
  1. Use a closed dot for what inequality symbols?
  2. Use an open dot what what inequality symbols?
A
  1. ≤ and ≥
  2. < and >
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13
Q

Inequality

  1. Parentheses indicate?
  2. Brackets indicate?
A
  1. Open
  2. Closed
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14
Q

Write interval notation for

  1. a ≥ 1
  2. 6 > y
A
  1. [1,♾️)
  2. (-♾️, 6)

Always left to right

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15
Q

Follow the same rules to solve an inequality as you do an equation. ___________the inequality symbol if you multiply or divide by______
number.

A
  1. Switch
  2. Negative
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16
Q

What are irrational numbers?

A

a number that cannot be expressed in the form of a fraction or ratio due to having a decimal expansion that is non-terminating and non-recurring at any point

17
Q

What are rational numbers?

A

a number that is not an irrational number, or a number that can be written as a fraction or ratio where both the numerator and denominator are integers, and the denominator is not equal to zero.

Include: fractions and integers

Integers include: whole numbers and natural numbers

18
Q

What are real numbers?

A

rational or irrational numbers

19
Q

The word ”of” always indicates?

A

multiplication in math

20
Q

How to find slope using pair of points?

A
21
Q

Slope formula:

A

m = (y2 - y1) / (x2 - x1)