2 years ago

25 percent of £18 What is the answer

Mathematics

2 answers:

dlinn [17]2 years ago

8 0

Answer:

4.5 or 4 1/2

Step-by-step explanation:

siniylev [52]2 years ago

7 0

£4.50
If u need the step by step answer
18➗2 then 9➗2

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A winter sport passed at Wood Middle school costs $15. A stydent without a pass must pay $1.75 for each event. How many events w

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Nine events for a pass to be a better deal

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3 years ago

I give brainliest if the answer is correct

nirvana33 [79]

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2 years ago

Help me asap plssss !! will crown brainliest !!

Finger [1]

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Step-by-step explanation:

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3 years ago

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Alexxandr [17]

Answer:

x = 30

Step-by-step explanation:

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3 years ago

Read 2 more answers

The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and musc

ArbitrLikvidat [17]

Answer:

a) Sample correlation coefficient, r = 0.7411

bi) test statistic, t = 4.102

bii) P-value = 0.000736

Step-by-step explanation:

a) The formula for the sample correlation coefficient is given by the formula:

$r = \frac{S_{xy} }{\sqrt{S_{xx} S_{yy} }} }$

$S_{xx} = 2,648,130.357\\S_{yy} = 36.7376,\\S_{xy} = 7408.225$

$r = \frac{7408.225}{\sqrt{2648130.357*36.7376} }$

r = 0.7511

i) formula for the test statistic is given by the formula:

$t = \frac{r\sqrt{n-1} }{\sqrt{1 - r^{2} } }$

sample size, n = 4

$t = \frac{0.7511\sqrt{14-1} }{\sqrt{1 - 0.7511^{2} } }$

t = 4.102

ii) Degree of freedom, df = n -2

df = 14 -2

df = 12

The P-value is calculate from the degree of freedom and the test statistic using excel

P-value =(=TDIST(t,df,tail))

P-value = (=TDIST(4.1,12,1)

P-value = 0.000736

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3 years ago