Question

If the mean of a+b+c+d=10 ,then find the mean of 2a-1,2b-1,2c-1,2d-1 ​

Answer 1

Answer:

19

Step-by-step explanation:

A+b+c+d/4=10

a+b+c+d=40

now according to the question

(2a-1)+(2b-1)+(2c-1)+(2d-1)/4

2a-1+2b-1+2c-1+2d-1/4

2a+2b+2c+2d-4/4

2 (a+b+c+d)-4/4

2 (40)-4/4

80-4/4

76/4

19

that's is the mean of question

Answer 2

Answer:

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