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just olya [345]
3 years ago
15

From the beginning of cross- country season to end, Tisha reduced her time by 17%, Ankara reduced her by 1/6, Juanita reduced he

rs by 4/25, and Julia reduced hers from 16:00 to 13:30. Who reduced her time by the greatest percent?
Mathematics
1 answer:
lana66690 [7]3 years ago
5 0
Divide the numerator by denominator: 1/6=.1667; 4/25=.16. Change to percents by moving decimal: Ankara: 16.6% or 17%; Juanita: 16%. Find the time difference: 16:00-13.30=2:30. Divide by 100: 2.5/100=.025. Change to percent: Julia: 2.5% or 3%. Tisha reduced her time the most :)
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Answer:

6. Actual length is 8 mm.

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11. a=-3

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Step-by-step explanation:

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balandron [24]

Answer:

The sample size is n = 2

Step-by-step explanation:

From the question we are told that

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    The standard deviation is  \sigma = 2.539

From the question we are told the confidence level is  99% , hence the level of significance is    

      \alpha = (100 - 99 ) \%

=>   \alpha = 0.01

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  2.58

Generally the sample size is mathematically represented as  

   n = [\frac{Z_{\frac{\alpha }{2} } *  \sigma }{E} ] ^2

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6 0
2 years ago
I really need help with this question!
m_a_m_a [10]

Answer:

(s-6)/r

option D

Step-by-step explanation:

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Now we are also given that (r,s) is on our line which means s=c(r)+6.

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(s-6)/r.

6 0
3 years ago
In the figure, PQ is parallel to RS. The legth of RP is 4 cm; the length of PT is 16 cm; the length of QT is 20 cm. What is the
Studentka2010 [4]
4/16  = SQ/20

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2 years ago
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Scorpion4ik [409]

Answer:

The equation of line with given points is 2Y - X - 5 = 0

Step-by-step explanation:

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6 0
3 years ago
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