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m_a_m_a [10]
3 years ago
6

Please ehlp delta math with explanation please

Mathematics
1 answer:
statuscvo [17]3 years ago
3 0

Answer:

134.3

Step-by-step explanation:

In \triangle{WXZ}, a right triangle, look at sides XW and XZ.

\frac{XW}{XZ}=\frac{\text{adjacent}}{\text{hypotenuse}}=\cos{82^\circ}\\\\XW=(XZ)\cos{82^\circ}

You now need to find XW.

In \triangle{XYZ}, the measure of angle XZY (the one at the top) is 180 - (82 + 67) = 31 degrees.

Using the Law of Sines in triangle XYZ,

\frac{XZ}{\sin{67^\circ}}=\frac{540}{\sin{31^\circ}}\\\\XZ=\frac{540 \sin{67^\circ}}{\sin{31^\circ}}

Put that into the equation for XW above...

XW=\frac{540\sin{67^\circ}\cos{82^\circ}}{\sin{31^\circ}}

A calculator shows that this is approximately 134.3

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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

b)

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

4 0
3 years ago
Really needed !!!!!! Please
Ivahew [28]
PRT means multiply p, r, and t
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2(3r+7)−(2+r)<br> I need the answer
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Answer:

5r+12

Step-by-step explanation:

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You are building a new wooden deck on your house. The old deck had a length of (2x + 1) feet and a width of (3x – 3) feet. You w
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3 years ago
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20 points!
Arte-miy333 [17]

Answer:

Step-by-step explanation:

hypotenuse=2*AB

where AB is the smallest side.

Take AB as the base .

Draw a perpendicular at B.

A as the center and cut an arc AC=2 AB

Join AC.

CAB is the reqd. triangle.

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3 years ago
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