To find the common ratio in a geometric sequence, u divide the second term by the first term. 20/80 = 1/4 <== common ratio
Terms are found in a geometric sequence by multiplying each number by the common ratio to get to the next number.
start with 80
80 * 1/4 = 80/4 = 20
20 * 1/4 = 20/4 = 5
5 * 1/4 = 5/4
5/4 * 1/4 = 5/16 <===
5/16 * 1/4 = 5/64 <===
5/64 * 1/4 = 5/256 <===
19 units
Use the absolute value to find the difference between the values. This ensures that no matter which way round the calculation is done the result is the same
| - 13 - 6 | = | - 19 | = 19
or
| 6 - (- 13) | = | 6 + 13 | = | 19 | = 19
3÷8=0.375
is that what you want to know
