A bag contains yellow marbles and red marbles, 31 in total. The number of yellow marbles is 1 less than 3 times the number of red marbles. How many yellow marbles are there?

Find all values of x in the interval [0, 2Ï] that satisfy the equation. (enter your answers as a comma-separated list.) 6 + 3 cos (2x) = 9 cos (x)

What is the equation of these line x-3y = 18 in slope-intercept form

Given: - 3x + y = 1. Write the equation in general form Ax + By + C = 0.

4. Calculate using the order of operations. a) (+30) / (-10) + (-20) / (-1)

About 2% of the people in the world have red hair. There are about 7,000,000,000 people in the world. about how many people have red hair?

If two angles in a triangle add up to138, then what is the size of the third angle

Kay has an 80% probability of making a free throw in basketball and each free-throw is independent. Kay gets to take two free throws and must make both to win the game. What is the probability that Kay's team will win the game?

Round the underlined digit 75,254

The GCF of 24 and 32 is

Which is a higher score 3 out of 10 or 5 out of 20?