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Sati [7]
3 years ago
11

Help plz!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0

Answer:

78.85

Step-by-step explanation:

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-9x = 16.2 simplified?
Ghella [55]

Answer:

x = -1.8

Step-by-step explanation:

-9x = 16.2

Divide each side by -9

-9x/-9 = 16.2/-9

x = -1.8

5 0
3 years ago
Which is the standard form of the equation of the parabola that has a vertex of (3, 1) and a directric of x = -2?
vagabundo [1.1K]
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}

8 0
3 years ago
Read 2 more answers
Write an algebraic expression for each verbal expression <br><br> Nine divided by x
Gre4nikov [31]

Answer:

9÷x is the correct answer

5 0
4 years ago
Help please is for now
zmey [24]
Answer: 5

Steps:
5x - 2y = 30
5(8) - 2y = 30
40 - 2y = 30
-2y = 30 - 40
-2y = -10
y = -10/-2
y = 5

I would appreciate the brainliest if this answer was correct and the steps were clear and helpful! :)
3 0
3 years ago
Item 3 is unpinned. Click to pin.
Ratling [72]

Answer:

84%

Step-by-step explanation:

i am so sorry if i am wrong. pls no hate tho

7 0
3 years ago
Read 2 more answers
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