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Evgesh-ka [11]
4 years ago
14

7.5% of 140 is what number?

Mathematics
2 answers:
posledela4 years ago
5 0

Answer:

10.5

Step-by-step explanation:

0.075*140=10.5

of= *

grigory [225]4 years ago
3 0

Answer:

10.5

Step-by-step explanation:

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If 5 a solution of 3x + 30 = 9x?
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Answer:

x = 5

Step-by-step explanation:

This equation can be rearranged in order to easily solve.

First, rearrange the equation by simply flipping it.

3x + 30 = 9x → 9x = 3x + 30

Then, you may solve for x.

9x = 3x + 30 subtract 3x from both sides of the equation

6x = 30 divide by 6 on both sides of the equation

x = 5

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Which is the standard form of the equation of the parabola that has a vertex of (3, 1) and a directric of x = -2?
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Check the picture below.  So,the parabola looks like so, notice the distance "p". since the parabola is opening to the right, then "p" is positive, thus is 5.

\bf \textit{parabola vertex form with focus point distance}\\\\
\begin{array}{llll}
\boxed{(y-{{ k}})^2=4{{ p}}(x-{{ h}})} \\\\
(x-{{ h}})^2=4{{ p}}(y-{{ k}}) \\
\end{array}
\qquad 
\begin{array}{llll}
vertex\ ({{ h}},{{ k}})\\\\
{{ p}}=\textit{distance from vertex to }\\
\qquad \textit{ focus or directrix}
\end{array}\\\\

\bf -------------------------------\\\\
\begin{cases}
h=3\\
k=1\\
p=5
\end{cases}\implies (y-1)^2=4(5)(x-3)\implies (y-1)^2=20(x-3)
\\\\\\
\cfrac{1}{20}(y-1)^2=x-3\implies \boxed{\cfrac{1}{20}(y-1)^2+3=x}

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3 years ago
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The domain is always all real numbers.
HOPE I COULD HELP!
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3 years ago
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