Simplify ratio
60 : 20

The answer is 3 : 1.

Step-by-step explanation:

In order to find the simpliest form, you have to find the common factor of 60 and 20 :

20 = 1×20, 2×10, 4×5

= 1, 2, 4, 5, 10, 20

60 = 1×60, 2×30, 3×20, 4×15, 5×12, 6×10

= 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

The common factors between 60 and 40 is 2, 4, 5, 10 and 20 but you have to choose the greatest factor which is 20 so that you can simplify completely. You have to divide 20 to both sides :

60 : 20

= 60÷20 : 20÷20

= 3 : 1

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

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step-by-step explanation: