Number Types Flashcard

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

Identify the rational numbers in the set: 2.75, √5, -8, √36, e, 2π/3, .7272..., -12345678/987654321.

Back

The rational numbers are 2.75, -8, √36 (which is 6), .7272... (which is 0.7272... repeating), and -12345678/987654321.

Front

How many rational numbers are in the set: 2.75, √5, -8, √36, e, 2π/3, .7272..., -12345678/987654321?

Back

There are 5 rational numbers.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

Which of the following best defines integers? A. A number that can be written as a fraction or decimal B. A number that includes zero, positive whole numbers, negative whole numbers C. A number with a decimal that goes on forever without repeating D. A number that is always greater than zero and can include fractions or decimals

Back

B. A number that includes zero, positive whole numbers, negative whole numbers.

Front

Back

The roots are 7 and -2.

Front

What is the result of the function composition p(q(x)) if p(x) = 3x + 4 and q(x) = 2x^2?

Back

The result is 6x^2 + 4.

Front

What is the definition of a matrix?

Back

A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

Front

What is a 1 x 1 matrix?

Back

A 1 x 1 matrix is a matrix that contains only one element.

Front

Which matrices will result in a 1 x 1 matrix when multiplied?

Back

Matrices D and E.