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Vaselesa [24]
3 years ago
15

find the nonpermissible replacement for the variable x in this expression (x^2)/(2x-4) ? find the nonpermissible replacement for

the variable x in this expression (x^2)/(2x-4) ?
Mathematics
1 answer:
Tcecarenko [31]3 years ago
5 0
<span>The nonpermissible replacement for the variable x in this expression is x = 2


Substituting x = 2 yields:


(2)^2/(2(2)-4)


4/0, which is undefined.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
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Answer:

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Step-by-step explanation:

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2 years ago
Identify the exact value of 157.5°
steposvetlana [31]
<span>exact value of sin 157.5 without using a calculator
sin(157.5)=sin(315/2)
Identity: sin(x/2)=±√[(1-cosx)/2]
select positive identity since 175 is in the 2nd quadrant where sin>0
sin(315/2)=√[(1-cos315)/2]

cos 315=cos45 in quadrant IV=√2/2
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check using calculator:
sin157.5º≈0.382...
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