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natulia [17]
3 years ago
7

II. Evaluate the following expressions.

Mathematics
2 answers:
RideAnS [48]3 years ago
8 0

Answer:

6. 62

7. 72

8. 78

9. 57 = -4 ??

10. ??

Step-by-step explanation:

6. 7*8 = 56, 56+6 = 62

7. 25+11 = 36, 36*2 = 72

8. 102-16-8 = 78

nasty-shy [4]3 years ago
6 0

Answer:

First one is 13×8

second one is 36×2

third one is 9×9=4

forth one is I don't know

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PLEASE HELP!!! <br> Solve the quadratic equation by completing the square.
kow [346]

The values of x in the quadratic equation using completing the square method are x=-4 \pm \sqrt{5}.

Given information:

The quadratic equation is x^2+8x+11=0.

It is required to factorize the given quadratic equation using completing the square method.

<h3>How to factorize a quadratic equation?</h3>

Use completing the square method to solve the equation as,

x^2+8x+11=0\\(x)^2+2(x)(4)+4^2-4^2+11=0\\( (x)^2+2(x)(4)+4^2)-4^2+11=0\\(x+4)^2-16+11=0\\(x+4)^2=5\\(x+4)=\pm \sqrt{5} \\x=-4 \pm \sqrt{5}

Therefore, the values of x in the quadratic equation using completing the square method are x=-4 \pm \sqrt{5}.

For more details about quadratic equation, refer to the link:

brainly.com/question/2263981

5 0
2 years ago
What fraction of 130 is 80
azamat
80/130 simplified would just be 8/13, and that is the simplest form.
Final answer: 8/13
Hope this helped! :)
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3 years ago
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Yuki888 [10]

Answer:

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Step-by-step explanation:

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