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Nata [24]
2 years ago
9

Math makes my brain hurt, so you can help?

Mathematics
2 answers:
Anit [1.1K]2 years ago
8 0

Answer:

3^5 is 3*3*3*3*3

Which is 9*3*3*3 = 27*3*3 = 81*3 =243

3* -3 = -9

243*-9 = -2187

Step-by-step explanation:

Kitty [74]2 years ago
7 0

Answer:

3^5. 3^-1

=3^5+(-1)

=3^5-1

=3^4

=3^2 . 3^2

=9 . 9

=81

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Does square root of 162 = square root of 81 and square root of 81 added
madam [21]
No.
.. √162 = (√2)*(√81)
.. √81 +√81 = 2√81 = √324

Square root is a non-linear function. sqrt(a +b) ≠ sqrt(a) +sqrt(b)
5 0
3 years ago
Determine the correct scientific notation form of the number. 627,000,000
GREYUIT [131]

Answer:

6.27 x 10 ^ 8

Step-by-step explanation:

8 0
2 years ago
3.) A glass of water is being filled up slowly. It initially starts out with 4
maria [59]

Answer:

  8 minutes

Step-by-step explanation:

The amount in the glass after m minutes can be described by ...

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We want to find m when a=16, so ...

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  12 = 3/2m . . . . . subtract 4

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It will take 8 minutes to fill the glass.

4 0
3 years ago
How do you round to the nearest hundredth?
Sati [7]
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For example:
2.663 --> 2.66
6.788 --> 6.79
3 0
3 years ago
Prove that for all integers a and b, if a mod 7 = 5 and b mod 7 = 6 then ab mod 7 = 2.
sergiy2304 [10]
Hello :
if : a <span>≡ 5 ( mod 7) ....(1)
     b </span><span>≡ 6 ( mod 7) ...(2)
(1)×(2) : ab </span><span>≡ 30 ( mod 7)
</span>but : 30 = 7×4  + 2  ..... so : 30  ≡ 2 ( mod 7)
then : ab ≡ 2 ( mod 7)
6 0
3 years ago
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