Find the value of cos theta, if sin theta= 1/2; 0 degrees greater than or equal to theta < 90 degrees

The system of equations graphed below has how many solutions? y = 2x + 2

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

Complete the equation of the live through (-1,6) (7,-2)