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Aliun [14]
3 years ago
14

What is the answer to −9 ×(−8)

Mathematics
1 answer:
klio [65]3 years ago
3 0

Answer:

-9x(-8)

9x8

=72

Step-by-step explanation:

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A car can travel 247 kilometers on 19 liters of gasoline. how much gasoline will it need to go 429 kilometers?
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find the number of miles per 1 liter:

247 kilometers / 19 liters = 13 kilometers per liter.


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429 kilometers / 13 kilometers per liter = 33 liters are needed.

6 0
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An online game company offers a packages that includes 2 games for $11.98. They also offer a package that in Claude's 5 games fo
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1. What is the name of this solid figure?
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Answer:

1.cuboid

2. 6

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4.

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3 years ago
determine the quadratic function of f whose graph is given. The vertex is (1,-3) and the y-intercept is -2
LuckyWell [14K]
Hmmm the y-intercept is at -2?  what does that mean?  well, is where the graph "intercepts" or touches the y-axis, and when that happens, x = 0, so the point is really ( 0 , -2 ).

and we know where the vertex is at.  Let's assume a vertical parabola, in which case the squared variable is the "x".

\bf \qquad \textit{parabola vertex form}\\\\
\begin{array}{llll}
\boxed{y=a(x-{{ h}})^2+{{ k}}}\\\\
x=a(y-{{ k}})^2+{{ h}}
\end{array} \qquad\qquad  vertex\ ({{ h}},{{ k}})\\\\
-------------------------------\\\\
vertex
\begin{cases}
h=1\\
k=-3
\end{cases}\implies y=a(x-1)^2-3
\\\\\\
\textit{now, we also know that }
\begin{cases}
x=0\\
y=-2
\end{cases}\implies -2=a(0-1)^2-3
\\\\\\
1=a(-1)^2\implies \boxed{1=a}\qquad thus\implies 
\begin{cases}
y=1(x-1)^2-3\\
\textit{or just}\\
y=(x-1)^2-3
\end{cases}
6 0
3 years ago
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