$\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{lccclll}
g(x) = &{{ 2}}x^2&{{ +4}}x&{{ -5}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
\\\\\\
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad \stackrel{minimum}{-5-\cfrac{4^2}{4(2)}}\right)$

7 0

3 years ago

Please i need help will give brainliest if correct

schepotkina [342]

Answer:

it is answer d

3 0

3 years ago

Read 2 more answers

Write the following as a mathematical sentence. Use the letter n as your variable.

alukav5142 [94]

Answer:

n-7=2

Step-by-step explanation:

We can start with one side, which is: seven less than a number

Since the number is n, seven less than it is n-7

The other side 2, as we can see after the word is

The equation, therefore, is

n-7=2

4 0

2 years ago

An adult ticket for a magic show costs $18. A children's ticket for the magic show costs $12.

BlackZzzverrR [31]

Answer:

for adult tickets 90 and for children’s tickets 30

Step-by-step explanation:

because 90(18) = 1,620 and 30(12) is 360 and when you add up 1,620 + 360 you will get the total which is $1980

Also i just took the test on k12 and got it right and i hope this helps!

6 0

3 years ago