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Alona [7]
3 years ago
15

The quotient of a number and 4​, minus 1​, equals 5/4. find the number

Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0
Hope this helps
<span>(x/4) - 3 = 5/4 
</span>
<span>x/4 - 12/4 = 5/4 
</span>
<span>x - 12 = 5 
</span>
<span>x = 17</span>
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A sport analyst wants to determine the mean salary of a Baseball player for 2015. He believes an estimate of this average salary
djyliett [7]

Answer:

<em>The large sample size 'n' =  199.6569≅ 200</em>

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given Standard deviation of salary for all baseball players for 2015 is about $5,478,384.55

<em>Standard deviation of  of salary for all baseball players for 2015 </em>

<em>   (S.D ) σ =  $5,478,384.55</em>

Given estimate of this average salary for all baseball players for 2015

                          =  $497,000

<em>Given Margin of error of error is  =  $497,000 </em>

<em>Level of significance ∝ = 80% </em>

<em>The critical value Z₀.₂₀ = 1.282  </em>

<u><em>Step(ii):</em></u><em>-</em>

<em>Margin of error of error is  determined by</em>

<em>           </em>M.E = \frac{Z_{0.20} S.D}{\sqrt{n} }<em></em>

<em>          </em>497,000 = \frac{1.282 X 5,478,384.55}{\sqrt{n} }<em></em>

Cross multiplication , we get

 \sqrt{n}  = \frac{1.282 X 5,478,384.55}{497,000 }

On calculation , we get

√n = 14.13

<em>Squaring on both sides, we get</em>

n = 199.6569

<u><em>Conclusion</em></u><em>:-</em>

<em>The large sample size 'n' =  199.6569≅ 200</em>

<em>    </em>

<em></em>

7 0
3 years ago
Use the distance to find the distance between the points A (-3,7 and B (-2,5).
Eva8 [605]

Step-by-step explanation:

1 2 3 4 5

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6 0
2 years ago
Thrice a number decreased by 5 exceeds twice the number by a unit find the number
viktelen [127]
Working attached below. Hope this helps! Any questions let me know :)

6 0
2 years ago
Plz answer both if you can
Harlamova29_29 [7]
I hope this helps you



130+x-5+x-35+x+30+75=360


3x=360-195


3x=165


x=55


m (B)=55-5=50
7 0
3 years ago
-4x + 7(x + (-2)) &gt; -18
professor190 [17]
-4x+7x-14
3x-14>-18
3x>-4
X>-4/3
3 0
3 years ago
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