True or false for all real numbers a and b, 2a • b = a^2 + b^2

Durning a flu epidemic, 146 students out of 680 who attend Lincoln middle school were absent. what percent were absent?

Elliot got some new trading cards. He has 4 packs with 20 cards each. Another pack has only 8 cards which equation show a way to find how much cards Elliot has in all? A. c = (4*8) + 20 B. c=4+20+8 C. c = (4*20) + 8

The menu price of a sandwich at a restaurant is $6. The meal is subject to a 5% food tax, and Marcy would like to leave a gratuity of 20% on the pre-tax cost.

The equation A=2500 (0.96) t represents an account balance t years after the account was created. Which statement is correct? A The account balance will decrease 0.04% each year. B The account balance will increase 0.04% each year.

75 = 4 (2) ^x Solve the equation by changing the form. Round answer to three decimals. *the "x" is the exponent

A box is 20 cm long. Which of these is closest to the length of this box in feet? (1 inch = 2.54 cm)

While shopping, you see a jacket marked down 20%. If the original price of the jacket is $175, what is the sale price of the jacket

Subtract the sum of - 11ab and - 23ab from the sum of - 19ab and 7ab

Which expression is equivalent to the given expression? 3 (2a + 5) ?

Suppose Eva has 12 3/4 pounds of flour. The day's baking will require that amount. How much flour will Eva need?