Find the circumference and the area of a circle with diameter 5 m

What is the slope of the line shown below?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?