Step-by-step explanation:
Area of rectangle =height×base
4 1/2×3 3/7=9/2×24/7=216/14=15 6/14=15 3/7
The speed is 630mp/s I think. Because you have to multiply Wavelength by Frequency to get true speed
Answer:definition of midpoint, angle BCA is congruent to angle DCA
The original price is $30 because 40% off of 12 = 30