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ad-work [718]
3 years ago
5

Can you ever use a calculator to determine if a number is rational or irrational?explain.

Mathematics
2 answers:
AysviL [449]3 years ago
8 0
Yes, for fractions you can multiply the denominator by the numerator. For square roots you can use the square root button.
malfutka [58]3 years ago
6 0
You can try


well, a number is rational if it can be writtten in form a/b where a and b are integers and b≠0

integers are like -4,-3,-2,-1,0,1,2,3,4


irrational numbers can't be written in form a/b like that with integers

so if we had 2/3, we're done, no need to use calculator
note: all releating deciamals can be written as a fraction and are therefor rational

you can use a calculator, but if it's in fraction form, no need to do that
sometimes a number repeats but you might not be able to see it if you use a calculator

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Use rounding to estimate the product of 5, 555 and 4, 444. Round both numbers to the nearest thousand to find your answer.
uranmaximum [27]

Step-by-step explanation:

5,555 can be rounded up to 6,000 because the 5 next to the five thousand will make it go up. while the 4,444 will round to 4,000 . I don't have a clear answer but I hope this helps.

8 0
2 years ago
Write 2.71x10-3 as an ordinary number.​
Katyanochek1 [597]

Step-by-step explanation:

{2.71 \times 10}^{ - 3}

This can be rewritten as

2.71 \times  \frac{1}{10^{3} }

If we will solve this way,

\frac{2.71}{1000}  = 0.00271

But since the denominator is just in terms of 1, we can just simply get the (-3). Note that we have to take the negative into consideration.

From the original position of the decimal point, move the decimal point 3 times TO THE LEFT. Therefore, from 2.71 we move the decimal point 3 times to the left, 0.00271.

If the exponent has a positive value, move TO THE RIGHT.

For example,

2.71 \times  {10}^{3}  = 2.71 \times 1000 \\  = 2710

Note that the exponent has a positive value. Therefore, we have to move the decimal point 3 times TO THE RIGHT. Producing 2710 as the answer.

5 0
3 years ago
Can u pleaseee answer this no links
Mnenie [13.5K]

Answer:

1) 7/5

2) 9/8

3) 1/9

4) 13/5 which becomes 5/13

5) 27/8 which becomes 8/27

Step-by-step explanation:

→ The reciprocal of a number is just the 'flipped version' of it, the numerator becomes the denominator and the denominator becomes the numerator

7 0
3 years ago
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The answer is 94.5x because you have to multiply 2.1 times 4.5
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What is $5,158 round to the nearest percent
Gemiola [76]
I think it 5,158.00 round to the nearest percent
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