Math; Open Sentences

equation

a mathematical sentence whose verb is 'equal' (=)

open sentence

an equation that contains a variable or variables

Zero is _____ a divisor.

never

additive identity

the number 0 (for the real numbers)

multiplicative identity

the number 1 (for the real numbers)

symmetric property

when the sides of an equation are interchanged, an equivalent equation is formed; if a = b, then b = a

Which of the following represents "a number less ten is twenty-two"?

N - 10 = 22

Which of the following represents "the difference between a number and eight is twenty-two"?

N - 8 = 22

Which sentence demonstrates the multiplicative identity?

1/2 · 1 = 1/2

Which of the following represents "the difference between ten and a number is the sum of eight and a number"?

10 - N = 8 + N

x · 1 + x/1 = _____.

2x

Which of the following represents "nine less than three times a number is forty"?

3N - 9 = 40

Which of the following represents "eight more than twice a number is fifty"?

8 + 2N = 50