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Mars2501 [29]
3 years ago
9

Solve. x² + 6x + 9 = 12 (Choices in photo)

Mathematics
2 answers:
Irina18 [472]3 years ago
6 0
X^2 + 6x + 9 = 12

X^2 + 6x - 3 = 0

(-6 ± <span>√(6^2 - 4*1*-3) ) / 2

3 </span>± √(48) / 2<span>

</span>3 ± 4√(3) / 2

3 ± 2√(3)
jeyben [28]3 years ago
6 0
To solve this problem and to calculate the value of the variable "x", you must apply the following proccedure:

 1. You have the quadratic equation:
<span>
 x²+6x+9=12

 2. Then:

 </span>x²+6x+9-12=0
 x²+6x-3=0
<span>
 3. You must apply the quadratic formula, which is:

 (-b±√(b^2-4ac))/2a

 a=1
 b=6
 c=-3

 4. Then, the result is:

 x=-3</span>±2√3
<span>
 Therefore, the correct option is the first one: </span>x=-3±2√3
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one number is equal to the square of another. find the numbers if both are positive and their sum is 1122
statuscvo [17]

Answer:

One number is 561

The other number is 23.6854

Step-by-step explanation:

x = y^2                One number = the square of another

x + y^2 = 1122     The sum of the two numbers is 1122

Substitute y^2 in for x on the second equation.

y^2 + y^2 = 1122    Combine like terms on the left

2y^2 = 1122            Divide by 2

y^2 = 1122/2

y^2 = 561                Take the square root of both sides.

y = 23.6854            

x = y^2

x = 561

y^2 = 561


4 0
3 years ago
Write an equation of the parabola in intercept form with x-intercepts of 12 and -6; and an axis of symmetry of (14, 4).
xenn [34]

Intercept form is: y = a(x - p)(x - q)  

It is given that:  p = 14, q = -6, x = 14, y = 4

4 = a(14 - 12)(14 - (-6))

4 = a(2)(20)

4 = 40a

\frac{4}{40} = \frac{40a}{40}

\frac{1}{10} = a

Answer: y = \frac{1}{10}(x - 14)(x + 6)



6 0
3 years ago
In the expression 3x² + y − 5, which of the following choices is the exponent in the term 3x²?
quester [9]

Answer: the exponent would be the 2

Step-by-step explanation:

7 0
3 years ago
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Find AB if A(0,3) and B(2,7)<br><br> AB= ?
Snezhnost [94]
To get you answer multiply .3 and 2.7
7 0
3 years ago
If three 2-liter sodas cost $14, then how much do five 2-liter sodas cost?
Roman55 [17]

Answer:

23.3

Step-by-step explanation:

6 0
3 years ago
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