How to find angles in a triangle

X:2-x+2:7=2 solve for x

The total amount of silver produced in the world in 2015 was 886.7 million ounces. What percent was produced by the United States? United States had 35.4 million ounces.

If 9100 dollars is invested at an interest rate of 8 percent per year, find the value of the investment at the end of 5 years for the following compounding methods.

A florist made 210 bouquets in 5 days how many bouquets did the florist make each day?

Multiply the polynomials (x+2) (2x^2+9x+8)

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.