Math Refresh II

Front

A recipe that has been tripled calls for 9 tablespoons of sugar. How many tablespoons of sugar are needed for double the original recipe?

Back

6 tablespoons

Front

Sally orders a hamburger and fries at a restaurant. The hamburger is $4.67 and the fries are $2.25. If tax at the restaurant is 8%, how much will Sally owe for her total?

Back

$7.47

Front

To add/subtract fractions, they must have a:

Back

common denominator

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

How do you convert a fraction to a decimal?

Back

Divide the numerator by the denominator.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / 2a

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the least common multiple (LCM) of two numbers?

Back

List the multiples of each number and find the smallest common one.