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arlik [135]
3 years ago
7

Solve x2 + 8x − 3 = 0 using the completing-the-square method

Mathematics
1 answer:
nikklg [1K]3 years ago
4 0
Hello :
x²+8x-3=0
(x² +2(4)x +4²) -4² -3 = 0
(x+4)²-19 = 0
(x+4)² = 19
x+4 = √19    or x+4 = - √19
 x = √19 - 4  or  x = -√19 - 4
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Solve for x I need help again :/
Nostrana [21]

The Angles depicted 38° and (6x + 2)° are equal because they form vertical opposite Angle pair.

so,

  • 6x + 2 = 38

  • 6x = 38 - 2

  • 6x = 36

  • x = 36 ÷ 6

  • x = 6
7 0
2 years ago
Don, Marco, and Trina want to equally share 29 sheets of drawing paper. How many whole sheets of drawing paper will each person
frosja888 [35]
29/ 3 = 9.666 so you would have 9 whole sheets of paper since you can not have half a sheet according to the question
7 0
3 years ago
What is StartAbsoluteValue 8 EndAbsoluteValue?
Minchanka [31]

The absolute value of 8 that is |8| is equal to 8.

We have given that,

|8|

We have to determine the value of |8|.

<h3>What is the absolute value?</h3>

The absolute value or modulus of a real number x denoted |x|, is the non-negative value of x without regard to its sign. Namely, {\displaystyle |x|=x}if x is a positive number, and {\displaystyle |x|=-x} if x is negative, and {\displaystyle |0|=0}.

Absolute values only find the true distance of a number from 0. Distance is always positive, so the absolute value of anything is always positive.

|8| = 8

To learn more about the absolute value visit:

brainly.com/question/24368848

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3 0
1 year ago
Read 2 more answers
I have just one question, could someone please answer it?? (see linked file)
Annette [7]

The solution is x=1 and y=-2

Further explanation:

Given equations are:

\frac{7}{2}x-\frac{1}{2}y=\frac{9}{2}\\3x-y=5

Multiplying equation no. 1 with 2 will give us:

7x-y=9       Eqn 3

From equation no 2:

3x-y=5\\-y=5-3x\\y=3x-5

Putting the value of y in eqn 3

7x-(3x-5)=9\\7x-3x+5=9\\4x=9-5\\4x=4\\\frac{4x}{4}=\frac{4}{4}\\x=1\\Putting\ x=1\ in\ equation\ 2\\3(1)-y=5\\3-y=5\\-y=5-3\\-y=2\\y=-2\\

The solution is x=1 and y=-2

Keywords: Linear equations, Solution set

Learn more about linear equations at:

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  • brainly.com/question/537998

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8 0
3 years ago
Indicate whether the statement is true of false.
yawa3891 [41]

The statement is false, as the system can have no solutions or infinite solutions.

<h3>Is the statement true or false?</h3>

The statement says that a system of linear equations with 3 variables and 3 equations has one solution.

If the variables are x, y, and z, then the system can be written as:

a_1*x + b_1*y + c_1*z = d_1\\\\a_2*x + b_2*y + c_2*z = d_2\\\\a_3*x + b_3*y + c_3*z = d_3

Now, the statement is clearly false. Suppose that we have:

a_1 = a_2 = a_3\\b_1 = b_2 = b_3\\c_1 = c_2 = c_3\\\\d_1 \neq d_2 \neq  d_3

Then we have 3 parallel equations. Parallel equations never do intercept, then this system has no solutions.

Then there are systems of 3 variables with 3 equations where there are no solutions, so the statement is false.

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3 0
2 years ago
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