Answer: the answer has to be number 3if I’m not mistaking
Step-by-step explanation:
I took this test last year
Answer:
1- 7cm × 7 cm - 49 cm squ.
13cm × 13 cm -169. cm square
19×19-361 cm square
1st is 19
2nd is 23
3rd is 27
4th is 31
5th is 35
6th is 39
7th is 43
8th is 47
9th is 51
10th is 55
This is because you are adding 4 each time, the rule of the sequence is 4n+15
When you multiply a rational and an rational you always get an irrational. answer 3
