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 (9-4= 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 (9-4= 5/3
A parenthesis is missing and I don't understand the problem. If it is
(9-4)/3 = 5/3 and the reciprocal is 3/5. If it is 1/[3*(9-4)] = 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.
To check the answers:
1. To subtract -7.1 - (-8.3), you can follow the steps below:
- First, simplify the double negative by changing it to addition: -7.1 + 8.3.
- Then, add the numbers: -7.1 + 8.3 = 1.2.
So, the answer to -7.1 - (-8.3) is indeed 1.2.
2. To multiply 7.6 × 1 × (-6), you can follow these steps:
- Multiply the numbers: 7.6 × 1 × (-6) = -45.6.
Therefore, the answer to (7.6)(1)(-6) is indeed -45.6.
3. To divide 90 by 18, you can follow these steps:
- Divide the numbers: 90 ÷ 18 = 5.
Hence, the answer to 90/18 is indeed 5.
4. To find the reciprocal of 1/3, you can follow these steps:
- The reciprocal of a fraction is obtained by swapping the numerator and denominator. So, the reciprocal of 1/3 is 3/1 or simply 3.
Therefore, the reciprocal of 1/3 is indeed 3.
5. The expression -15 - (-12) / (-18 - (-18)) is not properly formatted. It seems to be missing parentheses. If you could provide the correct formatting for the expression, I would be happy to help you solve it.