Answer:
-11
Step-by-step explanation:
F(C)=1.8C+32 so when C=40°
F(40)=1.8(40)+32
F(40)=72+32
F(40)=104°
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
![V=\text{Area of base}\times height](https://tex.z-dn.net/?f=V%3D%5Ctext%7BArea%20of%20base%7D%5Ctimes%20height)
![400=\text{Area of base}\times 20](https://tex.z-dn.net/?f=400%3D%5Ctext%7BArea%20of%20base%7D%5Ctimes%2020)
Divide both sides by 20.
![20=\text{Area of base}](https://tex.z-dn.net/?f=20%3D%5Ctext%7BArea%20of%20base%7D)
Therefore the area of base of cereal box is 20 mm².