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WITCHER [35]
4 years ago
5

A rocket is launched from the top of a 76-foot cliff with an initial velocity of 135 ft/s.a. Substitute the values into the vert

ical motion formula h = –16t2 + vt + c. Let h = 0.b. Use the quadratic formula to find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second please
Mathematics
2 answers:
Otrada [13]4 years ago
5 0

Answer:what the correct answer is c

Step-by-step explanation:

mixas84 [53]4 years ago
3 0
You divide -16 by 76 and then mutiply your answer by the  number you got
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Answer: (103.3515,\ 112.6485)

Step-by-step explanation:

According to the given information, we have

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\sigma=15\\\\\overline{x}=108

Critical z-value for 95% confidence = z_{\alpha/2}=1.96

Confidence interval :

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=108\pm (1.96)\dfrac{15}{\sqrt{40}}\\\\\approx108\pm4.6485\\\\= (108-4.6485,\ 108+4.6485)\\\\=(103.3515,\ 112.6485)

Hence, the 95 percent confidence interval for this result : (103.3515,\ 112.6485)

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3 years ago
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Answer:

Step-by-step explanation:

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The measure of an angle is five times the measure of its complementary angle. What is the measure of each angle?
GalinKa [24]

Answer:

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Step-by-step explanation:

  1. Let the supplement = x  
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How do you find the missing base of an exponent? Example:<br><img src="https://tex.z-dn.net/?f=%20%20%7B%3F%7D%5E%7B3%20%7D%20%2
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Well ? Multiplied by it self would be the answer so ?=5
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If we call 'D' the date in January, then at the end of D, there arr. 2^D people who have heard the rumor. 2^8 = 256 .
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