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oee [108]
3 years ago
9

What number should be added to both sides of the equation to complete the square ? x2 + 12x = 11

Mathematics
2 answers:
svlad2 [7]3 years ago
6 0

Answer:

36.

explanation:

We have been given an equation  and we are asked to find the number that should be added to both sides of the equation to complete the square. To complete the square we divide the constant with x term by two and add the square of that number to both sides of equation to complete the square.We can see that constant of x term is 12, so let us divide 12 by 2. Therefore, we should add 36 to both sides of our equation to complete the square.

Korvikt [17]3 years ago
3 0
You can add a lot of numbers (or so I think). One number I think you can add is 31. 
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An engineer estimated the weight of a steel beam to be 600 pounds. The actual weight of the beam was 639 pounds. Find the absolu
mario62 [17]

Answer:

Absolute error = 39

Percent Error = 6.10%

Step-by-step explanation:

Actual value = 639 pounds

Observed Value = 600 pounds

The formula to find absolute error is:

Absolute Error = Actual value - Observed Value

                        = 639 - 600

                        = 39

The formula to find Percent error is:

Percent Error = (Actual value - Observed Value / Actual value)*100

                       = (639 - 600/639)*100

                       = 6.10%

                 

7 0
3 years ago
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Ariel wants to find out the most popular theme for spirit week at school. She cannot decide between two methods.
fredd [130]
Option 2 as you get a wider range of student
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3 years ago
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An office building has the same number and size of offices on each floor. If there are 21 offices on the first 3 floors, then wh
zhenek [66]

Answer:

70 offices

Step-by-step explanation:

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6 0
2 years ago
Find the values of a and b.<br> a<br> The diagram is not drawn to scale.<br> a =<br> U<br> b =<br> U
nata0808 [166]

Answer:

a = 36°

b = 144°

Step-by-step explanation:

<h3><u>Method 1</u></h3>

Number of sides = n = 10

Sum of interior angles = (n - 2) × 180°

                                     = (10 - 2) × 180°

                                     = 8 × 180°

                                     = 1440°

Interior angle = b = sum of interior angles ÷ number of sides

                          b = 1440 ÷ 10

                          b = 144°

              a + b = 180° (Sum of angles in the straight line)

         a + 144° = 180°

a + 144° - 144° = 180° - 144°

                    a = 36°

<h3><u>Method 2</u></h3>

Number of sides = 10

Exterior angle = a = 360° ÷ Number of sides

                           a = 360° ÷ 10

                           a = 36°

            a + b = 180° (Sum of angles in the straight line)

        36° + b = 180°

36° + b - 36° = 180° - 36°

                 b = 144°

7 0
2 years ago
Write the equation of line in slope-intercept form.
Galina-37 [17]

y=3x-7 that's the answer

7 0
3 years ago
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