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Vadim26 [7]
3 years ago
6

Hi I need your help to find a ​

Mathematics
1 answer:
USPshnik [31]3 years ago
4 0

Answer:

I would think a is either 73 or 68 degrees. and i think a trigle equal 160degrees I hope this helps

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Can you help me with this?
horsena [70]

Answer:

B

Step-by-step explanation:

it this answer

7 0
3 years ago
A triangle has one angle that measures 38 degrees, one angle that measures 135 degrees, and one angle that measures 7 degrees. W
timurjin [86]

Answer:

a scalene triangle

Step-by-step explanation:

all angles are different lengths

8 0
2 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
Can someone help me with this problem
marshall27 [118]
It should be the second one:ab=ed
7 0
3 years ago
Read 2 more answers
Jose and a group of friends bought concert tickets for $257. The booking agency also charged a fee, bringing the total cost to $
ella [17]
So you already know the difference between the new number and original number, so all you have to do now is plug it in to this: Percentage Change=Difference/Original Number x100. So 17.99/257=.07x100 which equals 7%. So B is the correct answer.
5 0
3 years ago
Read 3 more answers
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