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nalin [4]
3 years ago
5

Help someone please

Mathematics
1 answer:
leva [86]3 years ago
4 0
21.19%

First you need to find the z-score with

X- Mean
-----------       =  Zscore
Standard
Deviation

Then use your z table (should be on your formula sheet if not look one up) 
to find your proportion (in this problem it would be .2119)  and convert it to a percent.

So plug everything in 

6.64-7.2
------------ = Z-Score
     .7

Z-Score= 0.8

The table showed our proportion to be .2119

therefore your percent is 21.19%
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galben [10]

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Answer:

  (x, y) = (-11, 4)

Step-by-step explanation:

You can subtract 3 times the second equation from the first to eliminate y.

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Substituting into the second equation gives ...

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The solution is (x, y) = (-11, 4).

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Tresset [83]

Answer:

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8 0
2 years ago
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shepuryov [24]

Answer:

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since the slope is not given, leave it like that

4 0
2 years ago
in the equation 6x – 2 = –4x + 2, Spencer claims that the first step is to add 4x to both sides. Jeremiah claims that the first
trapecia [35]
Spencer would be the correct one because it's easier to keep your variables positive when trying to solve. Therefore, in order to keep the variable positive, one would have to add 4x to both sides.
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