3 years ago

Please help will mark brainliest

Mathematics

1 answer:

aleksandrvk [35]3 years ago

6 0

Answer: the answer is 29.3

Step-by-step explanation:

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Factor x2 + xy - 2x - 2y.

ankoles [38]

Answer:

(X-2)(x+y)

Step-by-step explanation:

So we can factor X out, x(x-2) and factor y out y(x-2). Now we can factor out the x-2, so we have (x-2)(x+y)

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3 years ago

Please help me every one!!! Please and thank you if you you did it :)

Vesnalui [34]

Answer: look in explenation

Step-by-step explanation:

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3 years ago

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

Phillip is standing across the classroom from his desk. He walks x steps in a straight line to his right, turns left at a 90° an

Gnom [1K]

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3 years ago

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Maria's dinner bill is $21.89 after tax. If she wants to leave 15% tip, what will the total cost of the dinner be

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Answer:

24.56

Step-by-step explanation:

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3 years ago