Answer:
The area of base of cereal box is 20 mm².
Step-by-step explanation:
The volume of a cereal box is 400 mm³. The height of bx is 20mm.
The volume of box is


Divide both sides by 20.

Therefore the area of base of cereal box is 20 mm².
I think the answer is A: a[b(x)] = 3x2-21 because if you make this whole expression into an equation then solve x, you will get answer A. Hope this helps! :)
Answer:
The new water level decreased by 0.8 centimeters compared to the original water.
Step-by-step explanation:
Change = (-1.9) + 3.5 -2.4
= (-0.8)
**Answer**: D
Some triangles may have right angels but all triangles never have all 3 right angles
So the answer is D
I’m going with none because it would just be N-W= blank. Is the blank n or w. I mean it could be one of those but I don’t think you know enough about the question for it to be N or W. So I would say none. Sorry if I’m wrong.