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The mean of six rational numbers is -4.3.
a) What is the sum of the rational numbers?
b) If five of the numbers each equal -4.5,
what is the sixth number?



Answer :

sydneyewald987

Answer:

Step-by-step explanation:

a) You can calculate by multiplying the decimal numbers-

  4.3 x 6 = -25.8

-25.8 = The sum of the rational numbers

b) You multiply -4.5 by 5 to get the sum of the first 5 numbers-

 -4.5 x 5 = -22.5a

Then you subtract -22.5 from -25.8

 -25.8 - (-22.5) = -3.3 --------------- -25.8 + 22.5 = -3.3

So, the sixth number is -3.3

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