Answer:
Step-by-step explanation:
40/50=0.8
0.8*100=80%
Taking 80% of half life
=80/100 *5700
40% of bowl is = 4560 years
Answer:
The last one: 12x + 3
Step-by-step explanation:
6 + 4(3x - 2) + 5
6 + 12x - 8 + 5
12x + 6 - 8 + 5
12x + (-2) + 5
12x + 3
Answer:
2nd one have a good day ;)