7.

Which statement is NOT true?

If x2 = 1, then x = 1.

x2 = 1 if and only if x = 1 or x = - 1.

If x = - 1, then x2 = 1

If x = 1, then x2 = 1 ...

A train travels 90 km in 2 1/4 hours. what is its average speed in kilometers

On a newly developed IQ test, an individual scores at the 110 level on the first half of the test, and 150 on the second half of the test. What does this test appear to lack

A bag contains 5 red balls, 3 green balls, and 2 yellow balls. Find the sum of the probability of drawing a red ball, replacing it, drawing a green ball, replacing it and drawing a yellow ball. A) 0 B) 1 C) 10 D) 1/10

What factor do the following trinomios have in common? 2x^2-x-28 2x^2-15x+28

What is the Greatest Common Factor for the given polynomial? 5x3y2 + 15xy2 + 25x2y3

Solve the equation for x. 2 3 x - 1 9 x + 5 = 20 x =

To which real number subset do the following real numbers belong? A. rational numbers B. integers C. irrational numbers D. natural numbers

50 cents plus how many nickels equal 1.85

The real number 8.09 belongs to which set of number A. natural numbers B. irrational numbers C. integers

8. 72 is what percent of 45?