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galben [10]
3 years ago
12

Joey Chestnut is trying to break his own world record for eating the most hotdogs and buns in 10 minutes he needs to eat more th

an 72 hotdogs to break his record after 1
minute of competition ?Joey has Ian 10 hotdogs Joey wants to know the number of hotdogs per minute that he needs to eat for the next nine minutes to break his own record
Mathematics
1 answer:
Anna71 [15]3 years ago
3 0
Set up a proportion.
62 over 9 = x over 1
62/9=6.8
9/9=1
6.8 over 1
rounded would be seven
so 6.8 hotdogs per minute
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Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

<em>The height </em>h(t)<em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>h(t) = 3 +90\cdot t -16\cdot t^{2}<em>, where </em>t<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>

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3+90\cdot t -16\cdot t^{2} = 84

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By Quadratic Formula:

t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}

t_{1} = 4.5\,s, t_{2} = 1.125\,s

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

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