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Leviafan [203]
1 year ago
9

Solve the quadratic equation by completing the square.x^2-14x+46=0First choose the appropriate form and fill in the blanks with

the correct numbers. Then solve the equation. If there’s more than one solution, separate them with commas.

Mathematics
1 answer:
Kaylis [27]1 year ago
7 0

x² - 14x + 46 = 0

subtract 46 from both-side

x² - 14x = -46

Add the square of the half of the co-efficient of x

x² - 14x + (-7)² = -46 + 7²

(x-7)² = -46 + 49

(x-7)² =3

Take the square root of both-side

x-7 = ±√3

x-7= ±1.732

Add 7 to both-side of the equation.

x= 7 ± 1.732

Eithe x= 7 + 1.732 or x= 7 - 1.732

x=8.732 or x=5.268

Therefore x = 8.732 , 5.268

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Answer:

~1.8 mile

Step-by-step explanation:

Michael lives at the closest  point to the school (the origin) on Maple Street,  which can be represented by the line  y = 2x – 4.

This means Michael's house will be the intersection point of line y1 (y = 2x - 4) and line y2 that is perpendicular to y1 and passes the origin.

Denote equation of y2 is y = ax + b,

with a is equal to negative reciprocal of 2 => a = -1/2

y2 pass the origin (0, 0) => b = 0

=> Equation of y2:

y = (-1/2)x

To find location of Michael's house, we get y1 = y2 or:

     2x - 4 = (-1/2)x

<=> 4x - 8 = -x

<=> 5x = 8

<=> x = 8/5

=> y = (-1/2)x = (-1/2)(8/5) = -4/5

=> Location of Michael' house: (x, y) = (8/5, -4/5)

Distance from Michael's house to school is:

D = sqrt(x^2 + y^2) = sqrt[(8/5)^2 + (-4/5)^2) =  ~1.8 (mile)

4 0
3 years ago
Write this mumber in standard form three hundred fifty thousand
Elan Coil [88]

Answer:

350,000 = three hundred fifty thousand

3 0
3 years ago
Which table shows a proportional relationship​
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A prime number is always greater than 1 ?
Nesterboy [21]
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7 0
3 years ago
Read 2 more answers
I am a three-digit number. My second Digit Is 4 Times Bigger Than The third digit.my first digit is 3 less than my second digit.
slava [35]

Answer:

Let 3rd digit be x

then 2nd digit = 4x & 1st digit = 4x-2.

It is three digit number. So, there are two case either x=1 or x=2.

Case 1,

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Hence number = 241 (ans)

Case 2,

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Hence number = 682 (ans).

Step-by-step explanation: hope this helps :P  

3 0
3 years ago
Read 2 more answers
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