If (23)2 = 4x, then 3x is equal to from Quantitative Aptitude S

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31.

The simplified value of
open parentheses 1 minus fraction numerator 2 xy over denominator straight x squared plus straight y squared end fraction close parentheses space divided by space space open parentheses fraction numerator straight x cubed minus straight y cubed over denominator straight x minus straight y end fraction minus 3 xy close parentheses is

  • fraction numerator 1 over denominator straight x squared minus straight y squared end fraction
  • fraction numerator 1 over denominator straight x squared plus straight y squared end fraction
  • fraction numerator 1 over denominator straight x minus straight y end fraction
  • fraction numerator 1 over denominator straight x minus straight y end fraction
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32.

If (23)2 = 4x, then 3x is equal to

  • 3

  • 6

  • 9

  • 9


D.

9

(23)2 = 4x
 ⟹   (2)6 = 22x
 ⟹   6 = 2x
⟹    x = 3
∴    3x = 33 = 27

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33.

If square root of 3 space equals space 1.732 comma space then the value of fraction numerator 9 plus 2 square root of 3 over denominator square root of 3 end fraction is:

  • 7.169

  • 7.196

  • 5.198

  • 7.296

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34.

The value of fraction numerator left parenthesis 2.3 right parenthesis cubed space plus space 0.027 over denominator left parenthesis 2.3 right parenthesis squared space minus 0.69 space plus space 0.09 end fraction is

  • 2

  • 2.27

  • 2.33

  • 2.6

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35.

fraction numerator 0.125 plus 0.027 over denominator 0.25 space minus space 0.15 space plus space 0.09 end fraction is equal to

  • 0.3

  • 0.5

  • 0.8

  • 0.9

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36.

fraction numerator 256 space cross times space 256 space minus space 144 space cross times space 144 over denominator 112 end fraction is equal to

  • 420

  • 400

  • 360

  • 320

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37.

0.001 is equal to

  • 1 over 1000

  • 1 over 999

  • 1 over 99

  • 1 over 9

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38.

fraction numerator 4.41 space cross times space 0.16 over denominator 2.1 space cross times space 1.6 space cross times space 0.21 end fraction is simplified to

  • 1

  • 0.1

  • 0.01

  • 10

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39.

open parentheses 1 1 half space plus space 11 1 half space plus space 111 1 half space plus space 1111 1 half close parentheses is equal to

  • 1236

  • 1234 1 half

  • 618

  • 617

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40.

The value of fraction numerator 2 begin display style 1 third end style minus 1 begin display style 2 over 11 end style over denominator 3 plus begin display style fraction numerator 1 over denominator 3 plus begin display style fraction numerator 1 over denominator 3 plus begin display style 1 third end style end fraction end style end fraction end style end fraction is

  • 38 over 109

  • 109 over 38

  • 1

  • 116 over 109

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