The average of 100 measurements is 23 and the average of 50 additional measurements is 27.

1 answer:

8 0

Total value of 100 measurements
100 * 23
2300

Total value of additional 50 measurements
50 * 27
1350

Total value of 150 measurements
2300 + 1350
3650

Average of 150 measurements
3650 / 150
24.3

25 > 24.3

Answer is B

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dem82 [27]

There is no b unfortunately

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x+a=y

interchAnge

y+a=x
y=x-a

Inverse is

f^{-1}x=x-a

Now

x-a=cx-d
x-cx=a-d
x(1-c)=a-d
x=a-d/1-c

You can have any number according to this but

c must not be 1
a and d must not be equal .
All three should belongs to integers set

Note:-

As there is no b given in question (May be missed in typing) Part-2 's equation can't be executed and part 3 also

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Elena L [17]

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3 years ago

(2z-16) divided by (8+z

jek_recluse [69]

All you have to do is follow the steps shown in the pictures and you’ll get your answer,