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3 years ago

PLEASE HELP!!!?!?!!!?!?what is 4 .5 + 1/2 ?

Mathematics

1 answer:

zlopas [31]3 years ago

8 0

The answer to that is 5, award me brainliest please!

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3 years ago

What is the length of the hypotenuse of the triangle below?

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Step-by-step explanation:

Using Pythagoras' identity in the right triangle

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3 years ago

Which are the solutions of x2 = –13x – 4? 0, 13 0, –13 StartFraction 13 minus StartRoot 153 EndRoot Over 2 EndFraction comma Sta

klasskru [66]

Solution of the given expression $x^2 = -13x-4$ is $x=\frac{-13+\sqrt{153}}{2}\,\,and\,\,x=\frac{-13-\sqrt{153}}{2}$

Correct options are: Start Fraction negative 13 minus Start Root 153 End Root Over 2 End Fraction comma Start Fraction negative 13 + Start Root 153 End Root

Step-by-step explanation:

We need to find solutions of $x^2 = -13x-4$

We need to solve the quadratic equation and find values of x.

Solving:

$x^2 = -13x-4$

Rearranging the terms:

$x^2+13x+4=0$

Solving the quadratic equation using quadratic formula:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

where a = 1, b= 13 and c=4

putting values:

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\x=\frac{-(13)\pm\sqrt{(13)^2-4(1)(4)}}{2(1)}\\x=\frac{-13\pm\sqrt{169-16}}{2}\\x=\frac{-13\pm\sqrt{153}}{2}\\x=\frac{-13+\sqrt{153}}{2}\,\,and\,\,x=\frac{-13-\sqrt{153}}{2}$

So, Solution of the given expression $x^2 = -13x-4$ is $x=\frac{-13+\sqrt{153}}{2}\,\,and\,\,x=\frac{-13-\sqrt{153}}{2}$

Correct options are: Start Fraction negative 13 minus Start Root 153 End Root Over 2 End Fraction comma Start Fraction negative 13 + Start Root 153 End Root

Keywords: Solving Quadratic Equations

Learn more about Solving Quadratic Equations at:

#learnwithBrainly

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3 years ago

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Step-by-step explanation:

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3 years ago

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Show the work please and thanks

GalinKa [24]

Answer:

I don't really know how to show the work for this one but the answer should be 13 because angle CA is 8 too if Angles CA were to be rotated on to the X line BC it would like be almost about the same size as Anglesey are whatever and that what it would be like a few inches or whatever a few inches longer I guess

3 0

3 years ago

PLEASE HELP!!!?!?!!!?!?what is 4 .5 + 1/2 ?​

PLEASE HELP!!!?!?!!!?!?what is 4 .5 + 1/2 ?