math
posted by keauanna on .
can someone check my answers please
subtract
7.1(8.3)= 1.2
multiply
(7.6)(1)(6)
= 45.6
divid
90/18 = 5
find the reciprocal of 1/3 (94= 5/3
15(12)

18(18)
undefined

subtract
7.1(8.3)= 1.2
ok
multiply
(7.6)(1)(6)
= 45.6
OK
divid
90/18 = 5
OK
find the reciprocal of 1/3 (94= 5/3
A parenthesis is missing and I don't understand the problem. If it is
(94)/3 = 5/3 and the reciprocal is 3/5. If it is 1/[3*(94)] = 1/15 and the reciprocal is 15.
15(12)

18(18)
undefined
OK 
divid
90/18 = 5
I might have said the answer was 5.0 since there are two significant figures each in 90 and 18 so you are allowed 2 s.f. in the answer. I don't know if you have had anything about s.f. or not.