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solmaris [256]
3 years ago
11

Solve x2+12x=82 using completing the square. Answer the questions below.

Mathematics
1 answer:
galben [10]3 years ago
4 0

Answer:

exact form : x =  ± √ 118 − 6

Decimal form :  x =  4.86278049 or − 16.86278049

Step-by-step explanation:

Use the formula  ( b /2 ) ^2  in order to create a new term. Solve for  x  by using this term to complete the square.

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In the figure to the right, if AC = 15 and BC = 12, what is the radius?
Andrew [12]

Answer:

The radius is 9.0 units

Step-by-step explanation:

we know that

In the right triangle of the figure ABC

Applying the Pythagorean Theorem

AC^2=AB^2+BC^2

substitute the given values

15^2=AB^2+12^2

solve for AB

AB^2=15^2-12^2\\AB^2=81\\AB=9\ units

Remember the the side AB of right triangle represent the radius of the circle

therefore

The radius is 9.0 units

6 0
3 years ago
Is my answer correct?<br> 2 1/4 + 1/4 = 2 1/2
Sholpan [36]
Perfectly correct. Two quarters do make a half :)
8 0
3 years ago
Why equals 3/4 X -12 and why equals negative 4X - 31
Helga [31]

Answer:

  (x, y) = (-4, -15)

Step-by-step explanation:

Perhaps you want the solution to ...

  y = 3/4x -12

  y = -4x -31

Equating the two expressions for y gives ...

  3/4x -12 = -4x -31

  3/4x = -4x -19 . . . . . add 12

  3x = -16x -76 . . . . . multiply by 4

  19x = -76 . . . . . . . . . add 16x

  x = -76/19 = -4 . . . . divide by 19

  y = (3/4)(-4) -12 = -15 . . . . use the first equation to find y

The solution to this system of equations is ...

  (x, y) = (-4, -15)

8 0
3 years ago
Find the value of y . Please help trying to finish ASAP :)) will give brainliest
slavikrds [6]
Since A (area of circle = C) is given = 148
Where we assume:
Y represents radius of the circle (r)
X represents diameter of the circle (D)
Pi (π) = 3.14
A = 2 * π * y
148 = 2 * 3.14 * y
148 = 6.28 * y
y = 148/6.28
So, y = 23.56

D = 2 * y
D = 2 * 23.56
So, D = 47.12

Assume A is unknown (not given as 148)
A = π * y^2
A = 3.14 * (23.56)^2
A = 3.14 * 47.12
So, A = 147.95 (approx. A = 148)
3 0
3 years ago
Please help (PLEASE DO NOYPE GIBBERISH FOR POINTS.)
krok68 [10]
It was reduced because as you can see on the scale the actual picture has larger spaces between the numbers.
7 0
3 years ago
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