Question

Verify that –( -P) = P for P =13/17​

Answer 1

Answer:

(i) x = 11/15 The additive inverse of x = 11/15 is -x = -11/15 as 11/15 + (-11/15) = 0 The same equality 11/15 + (-11/15) = 0 , shows that the additive inverse of -11/15 is 11/15 or -(-11/15) = 11/15 i.e. -(-x) = x

(ii) x = -13/17 The additive inverse of x = -13/17 is -x = 13/17 as (-13/17) + 13/17 = 0 The same equality 13/17 + (-13/17) = 0 , shows that the additive inverse of 13/17 is -13/17 or -(13/17) = -13/17 i.e. -(-x) = x

Answer 2

Step-by-step explanation:

Given the mean of 10 ,12 , 18 , 13 , P and 17 is 15

Mean =

n

Σx

15=

6

10+12+18+13+P+17

90=70+P

P=90−70=20cm