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Amiraneli [1.4K]
3 years ago
15

-how do I solve this equation:3-6(10-9v+7v)

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0

Answer:

opooopopoppopop

Step-by-step explanation:

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H=7 + 29t-16t^2 find all values of t for which the balls height is 19ft
NikAS [45]
\bf \qquad \textit{initial velocity}\\\\
\begin{array}{llll}
\qquad \textit{in feet}\\\\
h(t) = -16t^2+v_ot+h_o
\end{array} 
\quad 
\begin{cases}
v_o=\textit{initial velocity of the object}\\
h_o=\textit{initial height of the object}\\
h=\textit{height of the object at "t" seconds}
\end{cases}\\\\
-------------------------------\\\\

\bf h(t)=7+29t-16t^2\qquad h(t)=19\implies 19=7+29t-16t^2
\\\\\\
16t^2-29t+12=0\impliedby \textit{now, let's use the quadratic formula}
\\\\\\
t=\cfrac{-(-29)\pm\sqrt{(-29)^2-4(16)(12)}}{2(16)}\implies t=\cfrac{29\pm\sqrt{841-768}}{32}
\\\\\\
t=\cfrac{29\pm\sqrt{73}}{32}\implies t\approx 
\begin{cases}
1.17\\
0.64
\end{cases}

so  hmm check the picture below, thus the ball hits 19 feet of height twice, once on the way up, and once on the way down, at about 0.64 seconds and at 1.17 seconds.

5 0
4 years ago
How much grain can this container hold ? express your answer in terms of <img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula
IRINA_888 [86]

Answer:

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3 0
2 years ago
James thinks of two numbers. He says "The Highest Common Factor (HCF) of my two numbers is 3 The Lowest Common Multiple (LCM) of
xxTIMURxx [149]

Answer: (3,45) and (15,9)

Step-by-step explanation:

LCM x HCF = 45*3 = 135

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5 0
3 years ago
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If there are 400 cups on a table and 125 of them are taken away so there are x times 2 cups left what is x?
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I think the answer is 4
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3 years ago
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