Answer:
6.2 percent
Step-by-step explanation:
47.81 - 45 = 2.81
2.81/45
Answer:
3 coins / 7 bills
Step-by-step explanation:
42c/98b --(:2)--> 21c/49b --(:7)--> 3c/7b
OR
42c/98b ---( : 14 = (2*7))--> 3c/7b
Answer:
Ca^(2+) or the charge is 2 plus or just 2
Step-by-step explanation:
Charge on the calcium ion = 20*(+1) + 18*(-1) = 20 - 18 = 2
The charge on the calcium ion is +2