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Mariana [72]
3 years ago
6

Which expression shows 2x² + 18 factored completely

Mathematics
1 answer:
Lerok [7]3 years ago
3 0

Answer:

2(x^2+9)

Step-by-step explanation:

2x^2 +18

Factor out a 2

2(x^2+9)

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The answer to this word problem usinf discriminant
solniwko [45]
\bf h=-9.8t^2+45t+1.2\implies 64.5=-9.8t^2+45t+1.2
\\\\\\
0=-9.8t^2+45t-63.3\\\\
-------------------------------

\bf \qquad \qquad \qquad \textit{discriminant of a quadratic}
\\\\\\
0=\stackrel{\stackrel{a}{\downarrow }}{-9.8}t^2\stackrel{\stackrel{b}{\downarrow }}{+45}t\stackrel{\stackrel{c}{\downarrow }}{-63.3}
~~~~~~
\stackrel{discriminant}{b^2-4ac}=
\begin{cases}
0&\textit{one solution}\\
positive&\textit{two solutions}\\
negative&\textit{no solution}
\end{cases}
\\\\\\
(45)^2-4(-9.8)(-63.3)\implies -456.36

the discriminant is a negative value, thus no solution for such quadratic, meaning if we use h=64.5 like we did, there's no "t" seconds at which point the ball hits the batting cage.
8 0
3 years ago
Please help with question 6
Kitty [74]

Answer:

y = -3x - 1

Use the methods on your other questions.

6 0
2 years ago
I need to find the x pls help and show work
valentinak56 [21]

Answer:

--------------------------------------------

It is 9

--------------------------------------------

Step-by-step explanation:

--------------------------------------------

If the top and the bottom are the same, (shown in the larger model), then the top and bottom in the smaller model should be the same, which gives me 9.

--------------------------------------------

Good luck!

3 0
2 years ago
One-fifth of the sum of 7 and C<br> Translate algebraic expression
Dmitry_Shevchenko [17]

Answer:

\frac{1}{5} C +\frac{7}{5}

Step-by-step explanation:

\frac{1}{5} (7+C)

\frac{7}{5} +\frac{1}{5} C

8 0
3 years ago
Julian’s pool currently has twelve inches of water in it. He can pump eight inches of water into the pool every hour. In how man
Bingel [31]
Y = 8x + 12

Now, plug in the 60.
60 = 8x + 12

Subtract 12 from both sides.
48 = 8x

Divide both sides by 8.
6 = x

Swap sides.
x = 6

It would take 6 hours for the pool to have 60 inches of water inside it.
5 0
3 years ago
Read 2 more answers
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