The diagonals of a parallelogram are always perpendicular.

True

False

You record the temperature for 12 days. The data is shown in the table, which number describes how all the values in the data set vary? A) 11 B) 17.25 C) 18 D) 22

Whatis the slope of the line whose equation is 2x - 4y=10?

The common difference, d, in an arithmetic sequence whose fourth term is 16 and whose seventh term is 31.

A rental car company is running two specials. Customers can pay $40 to rent a compact car for the first day plus $6 for each additional day, or they can rent the same car for $30 the first day and $7 for every additional day beyond that.

What is the value of x in the inequality 7 minus 2x / - 4 + 2 < - x?

Coin Flips Recall the scenario from the previous page. A psychic claims to be able to predict the outcome of coin flips before they happen. Someone who guesses randomly will predict about half of coin flips correctly.

Evaluate e-1/2f when f equals, 2.

Solve for n. Round to the tenths place, if necessary. A. n = 12 B. n ≈ 9.5 C. n = 11 D. n

2ft 3in = _in what is the answer

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation. 3x + 2y = - 21 x - 3y = 4