Old bell: once every 7 minutes
Small bell: once every 3 minutes.
Large bell: 4 minutes
The first time they will ring together is at the lowest common multiple of 7,3 and 4.
Answer:
Its not that hard think harder 9
Answer would be 24 hope this is right
Answer:
1. 25%
2. 150%
3. 3%
4. 75%
5. 60%
6. 210%
7. 10%
8. 1%
9. 40%
10. 87.5
11. 105%
12. 2%
Step-by-step explanation:
We know that a1 = -1, and an = 2 * an-1.
We already know that the first time, a1, is -1. We're given the formula to find the next terms in the sequence.
For a given term in this sequence, it will be 2 times the last item in the sequence.
an = 2 * an-1
a2 = 2 * a2-1 = 2 * a1 = 2 * -1 = -2
a3 = 2 * a3-1 = 2 * a2 = 2 * -2 = -4
a4 = 2 * a4-1 = 2 * a3 = 2 * -4 = -8
a5 = 2 * a5-1 = 2 * a4 = 2 * -8 = -16
a6 = 2 * a6-1 = 2 * a5 = 2 * -16 = -32