<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B4%7D" id="TexFormula1" title="\frac{x}{4}" alt="\frac{x}{4}" align="absmiddle

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vagabundo [1.1K]

3 years ago

" class="latex-formula"> = -1
find the value of x

Mathematics

2 answers:

ValentinkaMS [17]3 years ago

5 0

Answer:

x=-4

Step-by-step explanation:

-1x4=-4

i hope this helps

AlekseyPX3 years ago

3 0

I’m pretty sure the answer is -4 I hope this helps

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natka813 [3]

Answer:

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Step-by-step explanation:

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3 years ago

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Flura [38]

Answer:

2.0 seconds

Step-by-step explanation:

Given quadratic functions:

$\begin{cases}y=-7x^2+26x+3\\y=-6x^2 +23x+5\end{cases}$

To find the time, in seconds, that the balloons collided at the highest point, substitute one equation into the other equation and rearrange to equal zero:

$\begin{aligned}-6x^2+23x+5 & = -7x^2+26x+3\\-6x^2+23x+5+7x^2 & = -7x^2+26x+3+7x^2\\x^2+23x+5 & = 26x+3\\x^2+23x+5-26x & = 26x+3-26x\\x^2-3x+5& = 3\\x^2-3x+5-3& = 3-3\\x^2-3x+2& = 0\end{aligned}$