Mathematics, 05.05.2020 17:16 brittanycrowdis
A rectangular building is being designed to minimize heat loss. The east and west walls lose
heat at a rate of 10 units/m2 per day, the north and south walls lose heat at a rate of 8 units/m2
per day, and the floor loses heat at a rate of 8 units/m2 per day. Each wall must be at least 30
m long, the height must be at least 4 m and the volume exactly 4000 m3:
(a) Find and sketch the domain of the heat loss as a function of the lengths of the sides.
(b) Find the dimensions that minimize heat loss. (Check both the critical points and the points
on the boundary of the domain.)
(c) Could you design a building with even less heat loss if the restrictions on the lengths of the
walls were removed.
Answers: 2
Mathematics, 21.06.2019 18:40
Juliana says that she can use the patterns of equivalent ratios in the multiplication table below to write an infinite number of ratios that are equivalent to 6: 10. which statement explains whether juliana is correct? she is correct because she can multiply 6 and 10 by any number to form an equivalent ratio. she is correct because 6: 10 can be written as 1: 2 and there are an infinite number of ratios for 1: 2. she is not correct because the multiplication table does not include multiples of 10. she is not correct because 6: 10 is equivalent to 3: 5 and there are only 9 ratios in the multiplication table that are equivalent to 3: 5.
Answers: 1
Mathematics, 21.06.2019 21:30
Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?
Answers: 1
Mathematics, 22.06.2019 01:00
Asmall book publisher knows that 26 books weigh 41 lbs. how much do 40 books weigh?
Answers: 1
Mathematics, 22.06.2019 02:00
Currently, the largest cruise ship has a tonnage of 225,282 gross tons (gt). which of the following is a reasonable estimate for the tonnage of this cruise ship? a. 2 × 10^5 gt b. 2 × 10^6 gt c. 2 × 10^-5 gt d. 2 × 10^-6 gt
Answers: 1
A rectangular building is being designed to minimize heat loss. The east and west walls lose
Mathematics, 27.01.2020 21:31
Mathematics, 27.01.2020 21:31
Computers and Technology, 27.01.2020 21:31
Physics, 27.01.2020 21:31
Mathematics, 27.01.2020 21:31
History, 27.01.2020 21:31
Biology, 27.01.2020 21:31
History, 27.01.2020 21:31
Mathematics, 27.01.2020 21:31