plz solve this plz plz i will mark as brainlist
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Answer:
x=2
7^10
this is the answer
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Step-by-step explanation:
7) find the value of x in (512)-²/⁹ = 1/x
(512)-²/⁹ = 1/x
(2)⁹ × -²/⁹ = 1/x
(2)-² = 1/x
1/2² = 1/x
1/4 = 1/x
x = 4
8) [(5²)² × 16)/[(2³)² × (-5)²]
= [5⁴ × 16]/[2⁶ × (-5)²]
= [625 × 2⁴]/[2⁶ × 25]
= [625 × 2⁴]/2⁶ × 25]
= 625/(2² × 25)
= 25/2²
= 25/4
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