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Debora [2.8K]
3 years ago
13

+8.2+​(−7.9​)=

Mathematics
1 answer:
vichka [17]3 years ago
8 0

Answer:

Step-by-step explanation:

7

6-

Progr

5

4-

Introdu

3

С

2

1+

1

20

Transla

-7 -6 -5 -4

-32

1

À 3 4 5 6 7

-2

-3

Quiz 1

-4+

A

-5

Unit

Do 5 problems

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3 years ago
! + 3 − 5 = 0; by completing the square
mylen [45]

Answer:

x = 1.19258 and x = −4.19258

Step-by-step explanation:

The given equation is :

x^2+3x-5=0

Keep x terms on the left and move  the constant to the right side  by adding it on both sides.

x^2+3x=5

Take half of the x term and square it.

(3\times \dfrac{1}{2})^2=\dfrac{9}{4}

then add the result to both sides

x^2+3x+\dfrac{9}{4}=5+\dfrac{9}{4}\\\\(x+\dfrac{3}{2})^2=\dfrac{29}{4}\\\\(x+\dfrac{3}{2})=\sqrt{\dfrac{29}{4}}\\\\x=\dfrac{-3}{2}+\sqrt{\dfrac{29}{4}}\\\\x=\dfrac{-3}{2}-\sqrt{\dfrac{29}{4}}

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x = 1.19258 and x = −4.19258

Hence, this is the required solution.

6 0
3 years ago
A(-9, -9), B(-21, -12), and C(-15, 15). What type of triangle is it?
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A overly complicated triangle.

Step-by-step explanation: Good luck...

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