How do I solve Proportions?

Let theta be an angle in quadrant IV such that sin theta = - 5/13 Find the exact values of sec theta and tan theta

What is the greatest common factor of these number 12x^3, 16x^2, 20x?

Which is a counterexample for the following statement? The sum of two numbers is smaller than the product of the same numbers. -2 and - 8 -1 and - 3 1 and 3 2 and 8

Draw a figure with the given perimeter 18 units

Study results indicate that the mean length of time people spend on a bus in a city is between 21.2 min and 24.5 min What is the study margin of the error?

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.