$\bf \qquad \qquad \textit{quadratic formula}\\\\

\begin{array}{lcclll}
9x^2&+12x&-24&=0\\
\uparrow &\uparrow &\uparrow \\
a&b&c
\end{array}
\qquad \qquad 
x= \cfrac{ - {{ b}} \pm \sqrt { {{ b}}^2 -4{{ a}}{{ c}}}}{2{{ a}}}$

8 0

3 years ago

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(4x + 3) + (-2x + 4)

WITCHER [35]

Answer:

Step-by-step explanation:

(4x + 3) + (-2x + 4)

= 4x + 3 - 2x + 4 <em>combine like terms</em>

= (4x - 2x) + (3 + 4)

= 2x + 7

4 0

2 years ago

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What is the equation of a circle centered at the origin with radius 20.. i cant find the answer and i even tried?

KIM [24]

General equation of a circle with centre (h, k) is given by:

$(x - h)^{2} + (y - k)^{2} = r^{2}$

Now, the origin is the centre and radius is 20, so substituting these points in yields:
$x^{2} + y^{2} = 20^{2}$
$x^{2} + y^{2} = 400$

4 0

3 years ago

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0.6/18 PLEASE HELP<br> Thanks

Kaylis [27]

0.03 repeating. Hopefully i read the question right!

6 0

2 years ago

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