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If n% of 400 is 260, then what is 20% of n?

Twice the sum of a and b is thrice c algebraic expression

51 decreased by twice a number algebraic expressions

Simplify sin(x) * cos(x) * tan(x) * csc(x) * sec(x) * cot(x)

Simplify sin^2(x)/(1 - sin^2(x))

How many ways can 6 people be arranged around a circular table?

(98)^2 no calculator mental math

3-By-1 Mental Math Multiplication

How many straight lines can be formed by 8 points of which 3 are collinear?

Which of the following shows the numbers in ascending order? 2/3, 0.68, 67%, 4/5

How many unique letter arrangements in the word, Mississippi?

What is the value of x in the following equation: 2/3x + 1/6 = 1/3

Simplify 6x^2y^3(2x^2y)^3

The diagonal of a rectangle is 10 inches long and the height of the rectangle is 8 inches. What is the perimeter of the rectangle in inches?

A box contains 5 black and 2 white balls. 2 balls are drawn without replacement. Find the probability of drawing 2 black balls. 

You roll two fair dice. What is the probability the sum of the die equals 7?

Multiply Even Numbers by 5 No Calculator Shortcut

If two coins are flipped, what is the probability that there will not be two heads?

Simplify log(4) + log(12)

Addition mod 6 Table No Calculator

Multiply by 29 No Calculator Shortcut

If there are 7 bolts in a widget and 6 widgets in an appliance, how many bolts are in 20 appliances?

Find the distance between (1,2,3) and (7,5,5)

Log5 = 0.699, log2 = 0.301. Use these values to evaluate log40.