Is this a true statement X^2=1 if and only if x=1 or x=-1

Equivalent ratios to 16/12

Identify the property 3 + 4 = 4 + 3 associative property of addition commutative property of addition distributive property identity property of addition

Evaluate each expression if x=9 and y = 3

How can I write 625 in as many ways as I can in exponents

Does 5/11 + 5/11 = 10/11?

In the diagram, a building casts a 21-ft shadow and a flagpole casts a 6-ft shadow. If the flagpole is 15 ft tall, how high is the building?

jacinta says that the product of a positive and negative rational number is always irrational. explain her error.

Denny lives in Maryland and pay 6% in sales tax. He just bought $145 in groceries, but $70 worth of those groceries were non taxable. What is the total amount that Denny paid for the groceries, including the sales tax?

Yun is making some investments in the stock market. Stock for Company A has a 30% chance of losing $12,000, a 45% chance of breaking even, and a 25% chance of earning Yun $11,000.

Is 24.4 irrational i need to know