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vodka [1.7K]
2 years ago
8

A number x, rounded to 2 decimal places is 7.42 write down the error interval for x

Mathematics
1 answer:
Bond [772]2 years ago
5 0

Answer:

7.415 ≤ x < 7.425

Step-by-step explanation:

The number x was rounded to 2 decimal places to give 7.42.

Since rounded off to 2 decimal places, the error interval for x is half of 0.01 subtracted from and added to 7.42.

Thus;

7.42 ± (0.01/2)

(7.42 - 0.005),(7.42 + 0.005)

7.415, 7.425

Now, 7.425 will not be included in the internal because approximating it doesn't give 7.42.

Thus,the error interval is;

7.415 ≤ x < 7.425

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Answer:

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Step-by-step explanation:

There are 2 ways I immediately think about to solving the problem.

1) You multiply 30 and 200 , then multiply the product by .2 (i.e. 20%)

This way, you'll find out what the total amount was($6,000), then you multiply it by your commission rate.(.2 or 20%) to find your total profit($1,200).

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3 years ago
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Answer:

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Given

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Required

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From the table entries, only one theater supports this inequality.

Where

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P = 7.25  --- Popcorn

Which gives:

4.25 < 4.75\ and\ 7.25

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