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Paraphin [41]
3 years ago
6

213.49 in standard form

Mathematics
1 answer:
Travka [436]3 years ago
7 0

Answer:

2.1349 x10^2

Step-by-step explanation:

i used a standard form calculator

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Factorise the following.​
spin [16.1K]

Answer:

x²(9x– 11)(9x + 11)

Step-by-step explanation:

81x⁴ – 121x²

The expression can be factorised as follow:

81x⁴ – 121x²

x² is common to both term. Thus:

81x⁴ – 121x² = x²(81x² – 121)

Recall:

81 = 9²

121 = 11²

Therefore,

x²(81x² – 121) = x²(9²x² – 11²)

= x²[(9x)² – 11²]

Difference of two squares

x²(9x– 11)(9x + 11)

Therefore,

81x⁴ – 121x² = x²(9x– 11)(9x + 11)

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3 years ago
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Answer:

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3 years ago
Please answer the image below
nikklg [1K]

Answer:

<h2>301.593</h2><h2 />

Step-by-step explanation:

surface area = 2πrh + 2πr²

where r = 4 km radius

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surface area = 2πrh + 2πr²

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Answer:

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Step-by-step explanation:

x^-y=1/(x^y) so 3t^-4=3/(t^4)

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3 years ago
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