I need to know what the answer is for this question

Mathematics

2 answers:

finlep [7]4 years ago

8 0

-4 Fahrenheit

Cant put a unexplored answer so

elena55 [62]4 years ago

8 0

To find the answer you have to do 7-3 to find out how many hours there were for the temperature to change.
7-3=4
So it took four hours so you have to do 4 times 2 but since the temperature is dropping you have to do 4 times negative 2 so
4x-2=-8
So then you have to subtract 8 from your original number which is 4, so
4-8=-4
So the ANSWER IS D (-4 degrees F)

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What is slope-intercept form? <br> Why do we write equations using this form?

Brums [2.3K]

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m=slope
b=y-intercept

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we usually use this form because we can find the slope and find where it hits the y axis.
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7 0

3 years ago

Plz, Help me with this question!

guapka [62]

Answer:

G. 12

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6 0

3 years ago

4tan^2 x-8tanx+3=0 on interval [0,2pi]

Vadim26 [7]

$\bf 4tan^2(x)+8tan(x)+3=0\qquad [0,2\pi ]
\\\\\\
\textit{since it's just a quadratic, we'll just factor it}
\\\\\\\
[2tan(x)+1][2tan(x)+3]=0\implies 
\begin{cases}
2tan(x)+1=0\\
\qquad tan(x)=-\frac{1}{2}\\
\qquad \measuredangle x=tan^{-1}\left( -\frac{1}{2} \right)\\
\qquad \measuredangle x\approx 333.4^o, 153.4^o\\
2tan(x)+3=0\\
\qquad tan(x)=-\frac{3}{2}\\
\qquad \measuredangle x=tan^{-1}\left(-\frac{3}{2} \right)\\
\qquad \measuredangle x\approx303.7^o, 123.7^o
\end{cases}$