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Kryger [21]
3 years ago
7

Explain how (-2) + 8 is equal to 6

Mathematics
1 answer:
Paul [167]3 years ago
8 0

Step-by-step explanation:

-2+8 is the same as 8-2 which equals 6.

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If using the method of completing the square to solve the quadratic equation x^2-5x-18=0x 2 −5x−18=0, which number would have to
MAVERICK [17]

Answer:

25/4 will have to be added to "complete the square"

Step-by-step explanation:

x² - 5x - 18 = 0

x² - 5x = 18

Find the half of the coefficient of x and square it

(5/2)² = 25/4

Add 25/4 to both sides to complete the square

x² - 5x + 25/4 = 18 + 25/4

x² - 5x + 25/4 = 18(4/4) + 25/4

x² - 5x + 25/4 = 72/4 + 25/4

x² - 5x + 25/4 = (72+25)/4

x² - 5x + 25/4 = 97/4

(x - 5/2)² = 97/4

Find the square root of both sides

√(x - 5/2)² = ±√97/4

x - 5/2 = √97/2

x = √97/2 + 5/2 or x = -√97/2 + 5/2

x = 7.42443 or -2.42443

8 0
2 years ago
What is the answer ms.weldon
ANTONII [103]
What is the question honey?
6 0
3 years ago
What are the coordinates of A after reflecting across the line x = 3?
Pachacha [2.7K]

Answer:

It would be (3,2) since it is being reflected over the line it is already on

Step-by-step explanation:

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2 years ago
What is the inverses​
dlinn [17]

inverse means opposite,

inverse of addition is subtraction

4 0
3 years ago
3) Using J =
MrRa [10]

Answer:

Diameter = 49

radius = 49/2

circumference of circle is = <em>2</em><em>π</em><em> </em><em>r</em>

<em>=</em><em>. </em><em> </em><em>2</em><em>*</em><em>2</em><em>2</em><em>/</em><em>7</em><em>*</em><em>4</em><em>9</em><em>/</em><em>2</em>

<em>=</em><em> </em><em>1</em><em>5</em><em>4</em><em> </em><em>cm</em>

<em>hope</em><em> it</em><em> helps</em>

3 0
3 years ago
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