The square and the rectangle have the same area. All lengths are in centimetres. Show that 36x2 + ax + b = 0 where a and b are constants to be found.

Plz ! what is the volume of this pyramid? with numbers of 30cm 14cm 18cm

Afarmer has 5 times as many cows as pigs. the farmer only has cows and pigs, and he has 168 animals. how many cows does he have?

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?