solve all of these questions
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Heya...
Here's all the answers...
1) x²= -64
Therefore.,
-64/2
= -8. (Ans ) = (b)
2) (-5)³ × (-1)^27
= (-125) × (-27) [ (-) (-) cancel ]
= 125 ( ans) = (d)
3)
8^4 ÷ 8³
= 4096 ÷ 512
= 8
(-7)^5 ÷ (-7)³
= (- 16807) ÷ (-343)
= 49
5)
-1331
Base= -11
Exponent = 3
Ans = - 11³
6) ( 4/5 )³×( 5/9 )^4× ( 9/4)^4
= 64/125 × 625/6561 × 6561/256
= 1.25
Ans = 1.25
7) 5^8 × a^5 ×10³×2^6
_________________
8×5^9 ×b^5×2²
= 390625 × a^5 × 1000000 × 64
_______________________
8 × 1953125 × b^5 × 4
= 25000000000000 × a^5
__________________
62500000× b^5
= 250000000 × a
___________
625 × b
= 400000a
______
b
Hope it helps you.... ✨✨✨✨
Thank you
Here's all the answers...
1) x²= -64
Therefore.,
-64/2
= -8. (Ans ) = (b)
2) (-5)³ × (-1)^27
= (-125) × (-27) [ (-) (-) cancel ]
= 125 ( ans) = (d)
3)
8^4 ÷ 8³
= 4096 ÷ 512
= 8
(-7)^5 ÷ (-7)³
= (- 16807) ÷ (-343)
= 49
5)
-1331
Base= -11
Exponent = 3
Ans = - 11³
6) ( 4/5 )³×( 5/9 )^4× ( 9/4)^4
= 64/125 × 625/6561 × 6561/256
= 1.25
Ans = 1.25
7) 5^8 × a^5 ×10³×2^6
_________________
8×5^9 ×b^5×2²
= 390625 × a^5 × 1000000 × 64
_______________________
8 × 1953125 × b^5 × 4
= 25000000000000 × a^5
__________________
62500000× b^5
= 250000000 × a
___________
625 × b
= 400000a
______
b
Hope it helps you.... ✨✨✨✨
Thank you
raj255:
thank u pakhi so nice of u
it's my pleasure
which class do u study
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