diameter of human hair is around 0.0025cm
in scientific notation it is: 2.5x10^-3
53.35/11 = 4.85 for 1 key chain
4.85 *4 = 19.40
Answer:
n=4
Step-by-step explanation:
Distribute the 8. and then subtract 8n from both sides and divide 40 and 10n.
Answer: 76
Step-by-step explanation:
3 * 2 = 6
6* 2 = 12
2 * 32 = 64
12 + 64 = 76
