Question

I need help on 8,9,10,11 thanks

Answer 1

8) 18 is 9x2,
`√(18) = √(9*2) = √(9) √(2) = 3 √(2)` = 3 * about 1.4 = something above 4 (answer 3)
9) 3800 miles / 200 miles a year = 19 years.... 1957+19 years = 1976 (answer 4)
10) individuals + defence = 25% + 42 % = 67%, this means that 100%-67% = 33% left (answer 3)
11) not enough info given. they should give you height of fence - answer 5