OPEN SENTENCES

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

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

8 + 2N = 50

Which of the following represents "eight times the difference of a number and seventeen is thirty"?

8(N - 17) = 30

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

Zero is _____ a divisor.

never

Over the past ten years, the town's population doubled in size. The population is currently 12,000. What was the population ten years ago?Which of the following represents the given word problem if "P" represents the population ten years ago?

2P = 12,000

x · 1 + x/1 = _____.

2x

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

3N - 9 = 40

1.additive identity 2.equation 3.multiplicative identity 4.open sentence 5.symmetric property

4 an equation that contains a variable or variables 2 a mathematical sentence whose verb is 'equal' (=) 1 the number 0 (for the real numbers) 3 the number 1 (for the real numbers) 5 when the sides of an equation are interchanged, an equivalent equation is formed; if a = b, then b = a

Which of the following represents "four times the square of a number is thirty-six"?

4x2 = 36

Which of the following represents "five times the sum of a number and fifteen is fifty"?

5(N + 15) = 50

When Jose took the test over, he increased his score by 15 percentage points. Jose raised his score to an 83% on the test.Which of the following equations represents the word problem if "x" represents Jose's score on the first test?

x + 15 = 83

Which of the following represents "the square of the sum of a number and 4 is 36"?

x2 + 42 = 36