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Verdich [7]
3 years ago
12

Vertex form equation 4(x+2)^2-81 what is the solution?​

Mathematics
1 answer:
Andrei [34K]3 years ago
5 0

Answer:

<h3>            x₁ = 2.5 ,   x₂ = - 6.5               </h3>

Step-by-step explanation:

4(x+2)^2-81=0\\\\4(x+2)^2=81\\\\(x+2)^2=\frac{81}4\\\\x+2=\sqrt{\frac{81}4}\quad\vee\quad x+2=-\sqrt{\frac{81}4}\\\\x=\frac92-2\qquad\vee\quad\ x=-\frac92-2\\\\x=\frac52\qquad\vee\quad\ x=-\frac{13}2

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givi [52]

Answer:

x = 13

Step-by-step explanation:

The area (A) of a trapezium is calculated as

A = \frac{1}{2} h (b₁ + b₂ )

where h is the perpendicular height and b₁, b₂ the parallel bases

Here A = 55, h = 5. b₁ = x, b₂ = 9, then

\frac{1}{2} × 5 × (x + 9) = 55

2.5(x + 9) = 55 ( divide both sides by 2.5 )

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3 years ago
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Answer:

-7.5 - (8.5 + 5)

Step-by-step explanation:

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WINSTONCH [101]
Thank you for posting your question here at brainly. Feel free to ask more questions.   
<span>
The best and most correct answer among the choices provided by the question is </span>   <span>an = −4(−5)n − 1 where n ≥ 1 .
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Answer:

y = 2x + 2.5

Step-by-step explanation:

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Therefore, your answer is y = 2x + 5/2 or y = 2x + 2.5.

Hope this helps!

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