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Vadim26 [7]
2 years ago
5

What’s the answer??????#9

Mathematics
2 answers:
timurjin [86]2 years ago
7 0

\huge \tt \color{cyan}{➢}\color{pink}{A}\color{blue}{n}\color{red}{s}\color{green}{w}\color{grey}{e}\color{purple}{r }\color{cyan}{➢}

\large\underline{  \boxed{ \sf{✰\:Important\: point's }}}

  • a polynomial equation of the second degree is said to be as quadratic equation.
  • quadratic:-a function, of the form y=ax²+bx+c.
  • Standard form of quadratic equation is ax²- bx+c=0
  • where a≠0

\rule{70mm}{2.9pt}

\large\underline{  \boxed{ \sf{✰\: Let's\: solve }}}

\purple{ \sf{⇒Given \:function}}

⇒ y = -2(x-5)²-4

  • now 1st we have to solve (x-5)² by using algebraic identify (a-b)²= a²+b²-2ab here a=x nd b = -5
  1. (x-5)²
  2. x²-10x+25
  • Now

⇒y = -2(x²-10x+25)-4

  • distribution of 2 with bracket

⇒ y= -2x²+20x-50-4

⇒ y= -2x²+20x-54

Hence option A (-2x²+20x-54) is right ans.....

\rule{70mm}{2.9pt}

\red{ \underline{\underline{ \boxed{ \tt{✰ \: Option \:  A \: ✓}}}}}

Hope it helps !

zzz [600]2 years ago
4 0

Answer:

A)

Step-by-step explanation:Quadratics

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Part B) In order to calculate the average rate of change, we can first write the function. Using the information about the x-intercept and the vertex coordinates, we find that our function is f(x)=-0.03x^{2}+3x.
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4 0
3 years ago
Read 2 more answers
Maya and Mabel are inspecting an 80:1 scale floor plan of their new house. The dimensions of the living room on the scaled floor
AveGali [126]

Answer:

208 ⅓ ft²

Step-by-step explanation:

1⅞ = 15/8 inches ÷ 12

= 5/32 feet on map

Actual = 5/32 × 80

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Actual area:

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4 0
3 years ago
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