3 a + b equals negative 1, negative 3 a plus b equals 5

A friend who works in a big city owns two cars, one small and one large. One-quarter of the time he drives the small car to work, and three-quarters of the time he takes the large car.

the temperature this morning was 6 degrees below zero. in the afternoon was 15 degrees above zero. what was the total temperature increase.

There are two numbers, one is 7 more than twice the other. The sum of the numbers is 43. Make the equation to find the smaller number. Find the two numbers. Answer: If the smaller number is x, the equation will be.

A bedroom is shaped like a pentagon. A designer wants to put a triangular bookshelf in the corner marked on the diagram. The sum of the interior angles of a pentagon is 540°. Which statement is correct?

99 is 44% of what number

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