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stira [4]
3 years ago
5

The average marks for 25 students in a mathematics was was 48.

Mathematics
1 answer:
Komok [63]3 years ago
7 0

Answer:

total of the data points = 1200

Step-by-step explanation:

The 'average' of a data set is the total of the data points divided by the number of data points.

Here:

total of the data points

---------------------------------- = 48

                 25

Multiplying both sides of this equation by 25 yields:

total of the data points = 1200

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Which exponential function goes through the points (1,8) and (4,64)?
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Plug in (4,64) into each answer choice.

A) 4(2)^x
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Answer choice A is correct.

B) f(x) = 2(4)^x
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64 ≠ 512

Answer choice B is incorrect.

C) f(x) = 4(2)^{-x}
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Answer choice C is incorrect.

D) f(x) = 2(4)^{-x}
64 = 2(4)^{-4}
64 = 2(0.00390625)
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Answer choice D is incorrect.


Your answer is B<span>) f(x)=2(4)^x</span>
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