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ad-work [718]
4 years ago
9

Explain each step for solving x^2 - 4x=6 by the method of completing the square.

Mathematics
1 answer:
deff fn [24]4 years ago
3 0

Answer:

If you aren't looking for the quadratic solving method then comment it down below and tell me what you're looking for

QUADRATIC EQUATION  

x²- 4x = 6

(x - 2)²- 4 = 6

(x - 2)² = 10

x - 2 = ±10

x = ±10+2

x = -8, 12

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The actual distance between town a and Town B is 64 km. What is the distance on Beth's map? Did you use the graph Or the equatio
saul85 [17]
Use the equation and the map it might help so you can check your answer both ways tell me what the equation is and ill help a little more
4 0
3 years ago
1. A circle with center (-5, 2) is tangent to the y-axis. What is the radius of the circle? What is the equation of the circle?
Bess [88]

Answer:

Step-by-step explanation:

1)  The center lies on the vertical line x = -5 and the the circle is tangent to (touches in one place only) the y-axis.  Thus, the radius is 5.

2)  Starting with (x - h)^2 + (y - k)^2 = r^2 and comparing this to the given

                     (x - 4)^2 + (y + 3)^2 = 6^2

we see that h = 4, k = -3 and r = 6.  The center is at (4, -3) and the radius is 6.

3)  Notice that A and B have the same x-coordinate, x = 15.  The center of the circle is thus (15, -2), where that -2 is the halfway point between the two given points in the vertical direction.   Arbitrarily choose A(15, 4) as one point on the circle.  Then the equation of this circle is

(x - 4)^2 + (y + 3)^2 = r^2 = 6^2, where the 6 is one half of the vertical distance between A(15, 4) and B(15, -8) (which is 12).

4 0
3 years ago
(PLZZZZ HELP ME its actually easy I am trying to check my work) Bob's family of three was driving to Washington D.C.. They were
Rama09 [41]
Family of 3 so 
3 x4.89= 14.67
3x5= 15.00
3x8.49=25.47
25.47+14.67+15.00= 55.15
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8 0
4 years ago
Read 2 more answers
Of the three properties, reflexive, symmetric, and transitive that define the relation "is equal to," which one could also apply
yan [13]

Answer: Transitive property.

Step-by-step explanation:

First, for the equality we have:

Reflexive:

  For all real numbers x, x = x.

Symmetric:  

 For all real numbers x, y

 if x= y, then y = x.

Transitive:

 For reals x, y and z.

 if x = y, and y = z, then x = z.

Now, let's talk about inequalities.

first, the reflexive property will say that:

x > x.

This has no sense, so this property does not work for inequalities.

Now, the reflexive.

If x > y, then y > x.

Again, this has no sense, if x is larger than y, then we can never have that y is larger than x. This property does not work for inequalities.

Not, the transitive property.

if x > y, and y > z, then x > z.

This is true.

x is bigger than y, and y is bigger than z, then x should also be bigger than z.

x > y > z.

And this also works for the inverse case:

x < y and y < z, then x < z.

So the correct option is transitive property.

3 0
3 years ago
If f(x)=x/2-3 and g(x)=3x²+x-6 find (f+g)(x)
Ber [7]

Answer:

(f+g)(x) = 3x² + (3/2)X - 9

Step-by-step explanation:

f(x) = 1/2*x - 3

g(x) = 3x²+x-6

then (f+g)(x) i f(x) + g(x)

1/2*x - 3 + 3x²+x-6

3x² + 1.5X - 9

3x² + (3/2)X - 9

7 0
2 years ago
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