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Kitty [74]
3 years ago
8

Let a be an irrational number. Is 1/a rational or irrational

Mathematics
2 answers:
S_A_V [24]3 years ago
8 0

An irrational number multiplied, divided, added, or subtracted with a rational number, (or the other way around) is always irrational.

Since a is irrational, 1/a is 1/ a rational number, which will be irrational.

Marianna [84]3 years ago
7 0

<u>1 is a rational number</u> because 1 can go into 1 when dividing. <u>Irrational numbers are mostly decimals. </u>

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Step-by-step explanation:

The area of rectangular is A=l*w    (1)

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Express l from (2):

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Part B.

To find the width w  (Wmax) that corresponds to max of area A   we have to dind the roots of equation (1000-2w)w=0  ( we get it from (3))

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Part C.   Using (3) and the value of Wmax=250 we can write the following:

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Answer:

Step-by-step explanation:

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