There are 15 boys what are you asking the sentence is not complete
Solution in an attachment.
x = -4; y = -2; z = 4
Answer:
Sphere
Step-by-step explanation:
A sphere has no edges and therefore no corners. It has one curved face that goes all the way around. A square based pyramid, a triangular based pyramid and a cone have a point at the top.
If 40% of the cameras are digital, that means 60% of them are not digital.
If 60% of all cameras is 24, then 20% is 8, making 40% 16 cameras.