Which expression is equivalent to -2(15 - 20d + 5c)? Select all that apply. A) -30 + 400 - 10c
B) 5(-6 + 8d - 2c)
C) -2c + 8d - 6
D) 6 - 8d + 2c

What is the exact area of a circle with a diameter of 50 centimeters? a.87.9 square centimeters b.379.9 square centimeters c.1962.5 square centimeters d.4923.5 square centimeters

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a