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STALIN [3.7K]
3 years ago
9

Evaluate.

qrt{81} " align="absmiddle" class="latex-formula">
.......
​
Mathematics
1 answer:
loris [4]3 years ago
5 0

Answer:

Step-by-step explanation:

First find factors of 81

3 81

3 27

3 9

3 3

1

81 = 3×3×3×3

81 = 3^4

Taking squareroot

∴ -√81 = -√3^4

= -3^2

= -9

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Planet Strobe travels one full rotation arlund the sun in approximately 462.25 days. How many minutes does it take for strobe to
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Step-by-step explanation:

Dimensional analysis: dividing out common units like dividing out common factors

<em>For ex: </em>3/5* 5/7= 3/7

cross out the fives and turn them into 1

For dimensional analysis you just cross out the units.

days-->hours-->minutes

462.25d/1* 24h/1d* 60m/1h= 665,640 minutes

Cross out the d's and h's.

You are left with minutes on the top and no units on bottom.

Just multiply across to get the answer 665,640 minutes




3 0
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