#32.
n is any nonzero number.
n*n = n^2
Therefore it is always (+), regardless of the sign of n.
#33.
If y is (-),
(-y)(-y)(-y) = (-1)^3 * (y^3) = -(y^3)
Therefore the sign is (-).
#41.
Since it is depth (it went down), from the origin it is:
-40,230
I think you can do the estimation. The conversion factor is 1 mi = 5280 ft
#42.
Each of you eat 3 meals a day, so
5 * 3 = 15 meals a day
Since you go hiking for 4 days,
15 meals / day * 4 days = 60 meals
Hope this helps~ :3
What is the sign of each product? Explain.
32. n • n, where n is any nonzero number
33. y • y • y, where y is any negative number
41. Scientists drill 40,230 ft. Into Earth's crust. Write an integer to represent this depth. Estimate the depth drilled to the nearest mile.
42. You go hiking with 5 friends for 4 days. You are in charge of bringing the food. If you plan to eat 3 meals a day, how many meals should you pack?
1 answer
1 answer