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kondaur [170]
3 years ago
13

Can someone teach me how to do this?

Mathematics
1 answer:
Tanya [424]3 years ago
7 0

Step-by-step explanation:

pythagorean \: theorem \\  {hypothenes}^{2}  =  { {x}^{2} +  {y}^{2}  } \\  {17}^{2}  =  {x}^{2}  +  {15}^{2}  \\ 289 =  {x}^{2}  + 225 \\  {x}^{2}  = 64 \\ x = 8cm

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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
2 years ago
Which steps would you use to solve this equation? Check all that apply.
Dovator [93]

Answer: The answers are

  1. Subtract 7 from both sides of the equation.
  2. Subtract 7 from 7.
  3. Substitute 5 for p to check the solution.

Step-by-step explanation:

p + 7 = 12

=   p + 7 - 7 = 12 - 7

=   p = 5

Then for the substituting part

5 + 7 = 12

Hope this helps!

3 0
3 years ago
Find the total cost of a 36 month car lease, if: monthly payment = $175 down payment = $1,500 residual value = $10,000
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17,800 is correct answer or the third one
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3 years ago
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Determine if the sequence (cosn/ n) converges or diverges. tell if it is absolutely or conditionally convergent
nevsk [136]
. The series is divergent. To see this, first observe that the series ∑ 1/kn for n = 1 to ∞ is divergent for any integer k ≥ 2. 

Now, if we pick a large integer for k, say k > 100, then for nearly all integers n it will be true that 1 > cos(n) > 1/k. Therefore, since ∑ 1/kn is divergent, ∑ cos(n)/n must also be divergent The *summation* is divergent, but the individual terms converge to the number 0.<span>by comparison test since cosn/n <= 1/n is convergent and 1/n is divergent by harmonic series so the series is conditionally converget </span>
4 0
3 years ago
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