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ElenaW [278]
3 years ago
7

Please help me find out which value is closest to the perimeter of the window.

Mathematics
2 answers:
lozanna [386]3 years ago
8 0
The answer is 10.35 ft Hope this helps :)
Snezhnost [94]3 years ago
3 0

Answer:

10.35 is the closest to the perimeter of the window.

Step-by-step explanation:

hope it helps

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The curves r1(t) = 4t, t2, t3 and r2(t) = sin(t), sin(5t), 2t intersect at the origin. find their angle of intersection, θ, corr
san4es73 [151]
First get the tangent vectors by differentiating r1 and r2 
r_1 '(t) = (4,2t,3t^2) \\  \\  r_2'(t) = (cos (t), 5 cos(5t), 2)
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r_1' = (4,0,0) \\  \\ r_2' = (1,5,2)

Use identity for angle between 2 vectors:
u*v = |u| |v| cos \theta

Evaluate dot product and unit vectors:
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Sub into identity and solve for theta:
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Answer:
Angle of intersection is about 79 degrees.




5 0
3 years ago
What is the value of b in the equation 45 x -b
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Mathew's margin error at 99% confidence interval: E= 2.58*sqrt (p(1-p)/400) = 0.129 sqrt (p(1-p))

Since both obtained same estimate of proportion (that is, value of p), it can be seen that Mathew's estimate will have a small error (That is, 0.129 is smaller than 0.196). This can be attributed to larger sample size although a wider confidence (99%) interval was considered.
3 0
3 years ago
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