Solve this system of equations using substitution.

a + b + c = 180

b = 3a

c = 5a

Find the quotient 27 divided by 623.

Guilherme observed the number of minutes his dormmates spent on social media sites while they were at the library. He reported his data in the following table.

Samantha and her children went into a movie theater and will buy bags of popcorn and candies. Each bag of popcorn costs $6 and each candy costs $3.25. Samantha has a total of $50 to spend on bags of popcorn and candies.

In scientific notation, 8,700 is written:

If riley had 6/5 of a cake and rico had 3/5, kiley had how much cake? (not subtraction or adding) (show work)

What are the Rays of half circle

Given EG = 16 and FH = 12, what is the length of one side of the rhombus? 6 units 8 units 10 units 14 units

Determine the sine of

Factor 8r+40. Write your answer as a product with a whole number greater than 1

What's 85 divided by 9