How to prove that square root of x where x is rational is rational?

What is the value of 36x - 8y2 when x = 3 and y = - 6?

You own 100 shares of xyz common stock. XYZ quarterly dividend is $1.00 per share. What is the dividend check you can expect to receive for this year?

A new freezer costs $500 plus $0.20 a day to operate. An old freezer costs $20 plus $0.50 a day to operate. After how many days is the cost of operating each freezer the same?

Which expression below would make this a true statement? 48+26=

Sandy made 8friendship bracelets. She gave 1bracelets to her friend and 5 bracelets to her friends on the tennis team. Use the model to find the fraction that represents the total number of bracelets sandy away.

Find equation in slope-intercept form. Slope = -1, ordered pair: (4,-3)

What is the geometric mean between 64 and 49

Yvette uses 6 games of tea leaves to make 24 Fluid ounce of tea. Last week she made 288 fluid ounce of tea. How many grams of tea leaves did Yvette use to make tea last week

Divide. (-5w^10+10w^8+5w^6) / (5w^5)

Mia had $22. Then she started to receive $4 a week as an allowance. She plans to save all of her money for a bicycle and draws a graph of her planned savings.