5) True/False: (1) 0 is multiplicative identity. A (2) Integers are closed for subtraction. (3) Subtraction is commutative for integers. (4) 1 is additive identity. (5) The sum of an integer and it's additive inverse will be 1. (6) An integer multiplied by (-1) results in additive inverse of that number. Q. 6) Cost of a packet of biscuits is RS 14 what will be the cost of 1 dozen packets? Q.7) Find the number of bananas in 18 dozer of bananas.
Answers
Answer:
1) False
2)false
3)False
4)False
5)false (The sum of an integer and its additive inverse is always zero.)
6)sorry I don't no
Q6 sorry I don't no
Answer:
(1)false
(2)true
(3)false
(4)true
(5)false
(6)true
Step-by-step explanation:
(1)0 is not multiplicative identity
1 is the multiplicative identity
(2)because subtraction of any two integers is always an integer. Therefore, Integers are closed under subtraction.
(3)Subtraction and division are not commutative. When adding three numbers, changing the grouping of the numbers
(4)One is the additive identity for Rational, natural, whole numbers and integers, since multiplying it to them does not change the result
(5)The sum of an integer and its additive inverse is always 0, because for any integer a and its additive inverse (−a), the sum is a+(−a)
=a−a
=0.
(6)If we multiplying integer by (−1), then the result is the additive inverse of the integer.
(7)1 dozen = 12
Cost of 1 packet of biscuit - 14
Cost of 1 dozen packets - 14 x 12 =
Rs 168