Question

If x and y are two positive numbers and x<y then x-y= -(y-x)

a)5-10= -(___-5)
= -______


b)8-15= -(__-___)
= _____​

Answer 1

Answer:

Step-by-step explanation:

Mean=sum of given(all) values/total no. Of values

Mean=(2+4+6+8+x+y)/6

As given that mean is 5 so by taking it will becomes

5=(2+4+6+8+x+y)/6

5=(20+x+y)/6

As 6 is in division, therefore on other side of “=” it will get multiply with 5 and becomes

30=20+x+y

Now +20 on other side of “=” becomes -20 so we get

30–20=x+y

10=x+y

i.e ANS: x+y=10

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Sakshi Tripathi, studied at The Air Force School

Answered 4 years ago

Let's first understand the meaning of mean in mathematics

Answer 2

Answer:

(a)10,-5 (d)15,8,-7

Step-by-step explanation:

(a) 5-10=-(10-5)

-5= -5

(b) 8-15=-(15-8)

-7=-7