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inysia [295]
3 years ago
6

Francis. is. a. mice. a. cat

Mathematics
1 answer:
OlgaM077 [116]3 years ago
8 0
I like turtles

I really do

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3 • (5 + 4)2 - 42 =<br><br> A. 46<br> B. 227<br> C. 15<br> D. 345
Gnom [1K]
I hope this helps you



3.9^2-42



3.81-42



243-42


201
5 0
3 years ago
What are the roots of this equation? x2-4x+9=0
zysi [14]

Considering the definition of zeros of a function, the zeros of the quadratic function f(x) = x² + 4x +9 do not exist.

<h3>Zeros of a function</h3>

The points where a polynomial function crosses the axis of the independent term (x) represent the so-called zeros of the function.

In summary, the roots or zeros of the quadratic function are those values ​​of x for which the expression is equal to 0. Graphically, the roots correspond to the abscissa of the points where the parabola intersects the x-axis.

In a quadratic function that has the form:

f(x)= ax² + bx + c

the zeros or roots are calculated by:

x1,x2=\frac{-b+-\sqrt{b^{2}-4ac } }{2a}

<h3>This case</h3>

The quadratic function is f(x) = x² + 4x +9

Being:

  • a= 1
  • b= 4
  • c= 9

the zeros or roots are calculated as:

x1=\frac{-4+\sqrt{4^{2}-4x1x9 } }{2x1}

x1=\frac{-4+\sqrt{16-36 } }{2x1}

x1=\frac{-4+\sqrt{-20 } }{2x1}

and

x2=\frac{-4-\sqrt{4^{2}-4x1x9 } }{2x1}

x2=\frac{-4-\sqrt{16-36 } }{2x1}

x2=\frac{-4-\sqrt{-20} }{2x1}

If the content of the root is negative, the root will have no solution within the set of real numbers. Then \sqrt{-20} has no solution.

Finally, the zeros of the quadratic function f(x) = x² + 4x +9 do not exist.

Learn more about the zeros of a quadratic function:

brainly.com/question/842305

brainly.com/question/14477557

#SPJ1

6 0
1 year ago
What’s the algebraic expression to this please help !!!!
Wewaii [24]

2 × c ÷ 7 ÷ 2. This better?


8 0
3 years ago
Find the slope y - 2 = -3 (x+1) <br><br> (show steps!!)
Vsevolod [243]

y - 2 = -3 (x+1)

point slope form

y-y1 = m(x-x1)

looking at the above equation

the slope is -3

6 0
3 years ago
What is the pattern of?<br> 1 1<br> 1 2 1<br> 1 3 3 1<br> 1 4 6 4 1<br> 1 5 10 10 5 1
mamaluj [8]
This is pascals triangle
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3 years ago
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