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Olegator [25]
4 years ago
8

20th term of 12, 15, 18, 21

Mathematics
1 answer:
Rainbow [258]4 years ago
7 0

Answer:

69

Step-by-step explanation:

The rule: 3n+9

n=20

3(20)+9

60+9

69

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Molodets [167]

Step-by-step explanation:

First;

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True or false? The hypotenuse is the shortest side of a right angled triangle
kicyunya [14]

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Elan Coil [88]

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I am not sure if you meant the first equation to be y or -y.  I solved it as y.

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