Evaluate the expression (18-6) : (11-5), if possible

The average score on a biology test was72.1 write the average score using a fraction

Theo has 10 cookies. He eats 6 of those cookies he gives 4 cookies to each of his 4 friends. How many cookies does Theo's mother get?

Write a real-world problem that compares the ratios 5 to 9 and 12 to 15

Using addition formulas for sine and cosine to simplify the expression: cos (2pi/9) cos (pi/18) sin (2pi/9) sin (pi/18) I want to learn it the normal way first before I add my instructors instructions to place S=45 & T = 30.

Complete the equation of variation where y varies inversely as x. one pair of values is y = 45 when x = 20.

X/6 - 5 = 13 What does "x" equal in this equation?

Find all solutions in the interval [0, 2π). 7 tan^3x - 21 tan x = 0 A) pi/3, 2pi/3, 4pi/3, 5pi/3 B) 0, pi/5, π, 6pi/5 C) 0, pi/3, 2pi/3, π, 4pi/3, 5pi/3 D) 0, pi/3, π, 4pi/3

Which group of numbers is listed from least to greatest? -4, |-2|, |3|, 5, |-7| |-6|, - 4, |-2|, - 1, 0 -8, |-5|, - 4, |3|, 6 -6, |-3|, - 3, 6, |-9|

Solve the equation using the properties of equality. x/4 + 3 = 15

A triangle has two sides mausuring 8.5 cm and 15 CM. What are the least and greatest while number possibilities for the third side?