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AysviL [449]
3 years ago
12

Pleaseee Helppppp

Mathematics
2 answers:
Marrrta [24]3 years ago
8 0

Answer:

The answer is pie

Step-by-step explanation:

I know best

Gwar [14]3 years ago
5 0

Answer:

x = -6.00 (rounded to nearest hundredth)

Step-by-step explanation:

  • for a quadratic equation, h(x)=ax^2+bx+c  
  • we have f(x)=x^2+12x+31.5
  • a = 1
  • b = 12
  • to find minimum use equation x=\frac{-b}{2a}
  • x=\frac{-b}{2a}\\x=\frac{-(12)}{2(1)}\\x=\frac{-12}{2}=-6
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Solve the simultaneous equation:<br> 5 x + 2 y = 25 <br> 5 x − y = 10
Liono4ka [1.6K]

Answer:

(x, y) = (3, 5)

Step-by-step explanation:

5x+2y=25\\5x-y=10

Solving by elimination here again, there are 2 good options available. Either multiply the whole bottom equation by -1 to cancel the x, or by 2 to cancel the y. I'll do the latter:

5x+2y=25\\\\2(5x-y=10)\\10x-2y=20

Add from top to bottom:

\rightarrow (5x+10x)+(2y-2y)=25+20\\\rightarrow 15x=45\\\rightarrow x=3

Now, with the value of x, solve for y in either of the equations. I'll choose the second one here:

\rightarrow 5x-y=10\\\rightarrow 5(3)-y=10\\\rightarrow 15-y=10\\\rightarrow -y=-5\\\rightarrow y=5

(x, y) = (3, 5)

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Step-by-step explanation:

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What is 4/9 equivalent to ?
Marianna [84]
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