Maths Practice Question and Answer

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Answer : 2. "38%"
Explanation :

Answer: B) 38% Explanation: % Change in Curved Surface Area is given by┬а %Change┬аin┬аradius┬а+┬а%Change┬аin┬аheight┬а+┬а%Change┬аin┬аradius┬а├Ч┬а%Change┬аin┬аheight┬а100┬а┬а тЗТ+20┬а+┬а15┬а+┬а20├Ч15100┬а=┬а38%

Q:

рдпрджрд┐┬аtan4╬╕ + tan2╬╕ = 1┬ард╣реИ рддреЛ┬аcos4╬╕ + cos2╬╕┬ардХрд╛ рдорд╛рди рд╣реЛрдЧрд╛?

2241 0

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    2
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  • 2
    1
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  • 3
    тАУ 1
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  • 4
    тАУ 2
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Answer : 2. "1"

Q:

рдЙрди рдмрд┐рдВрджреБрдУрдВ рдХреЗ рдирд┐рд░реНрджреЗрд╢рд╛рдВрдХ рдЬреНрдЮрд╛рдд рдХрд░реЗрдВ рдЬрд╣рд╛рдВ рдЧреНрд░рд╛рдлрд╝ 57x-19y=399 рдирд┐рд░реНрджреЗрд╢рд╛рдВрдХ рдЕрдХреНрд╖реЛрдВ рдХреЛ рдХрд╛рдЯрддрд╛ рд╣реИред

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    x-рдЕрдХреНрд╖ рдкрд░(-7,0) рдФрд░ y-рдЕрдХреНрд╖ рдкрд░ (0,-21)
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  • 2
    x-рдЕрдХреНрд╖ рдкрд░(-7,0) рдФрд░ y-рдЕрдХреНрд╖ рдкрд░ (0,21)
    Correct
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    x-рдЕрдХреНрд╖ (7,0) рдкрд░ рдФрд░ y-рдЕрдХреНрд╖ (0,-21) рдкрд░
    Correct
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    x-рдЕрдХреНрд╖ (7,0) рдкрд░ рдФрд░ y-рдЕрдХреНрд╖ (0,21) рдкрд░
    Correct
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Answer : 3. "x-рдЕрдХреНрд╖ (7,0) рдкрд░ рдФрд░ y-рдЕрдХреНрд╖ (0,-21) рдкрд░"

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Answer : 3. "$$ {4\over5}$$"

Q: рдпрджрд┐ A рдХрд╛ 30% = B рдХрд╛ 0.25 = C рдХрд╛ $$ ({1\over 5}) $$ рд╣реИ рддреЛ A : B : C рдХрд┐рд╕рдХреЗ рдмрд░рд╛рдмрд░ рд╣реИ ? 2237 0

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    5 : 6 : 4
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    5 : 24 : 5
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  • 3
    6 : 5 : 4
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  • 4
    10 : 12 :15
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Answer : 4. " 10 : 12 :15"
Explanation :

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