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kotegsom [21]
3 years ago
9

What's the solution to x^2-11x+19=-5 (this is a Quadratic Equation)

Mathematics
2 answers:
Aloiza [94]3 years ago
8 0

Answer:

x = 3 and x = 8 are the solutions

Step-by-step explanation:

Step 1:  Set the equation equal to zero

For this question, it is done by adding 5 to both sides

x² - 11x + 19 + 5 = -5 + 5

   x² - 11x + 24 = 0

Step 2:  Factor the equation

Think about what two numbers add up to -11 and multiply to 24...

they are -3 and -8, so those are our factors...

   (x - 3)(x - 8) = 0

Step 3:  Set each factor equal to zero and solve

x - 3 = 0,      so add three to both sides to isolate x

 x - 3 + 3 = 0 + 3

    x = 3

x - 8 = 0,      so add eight to both sides to isolate x

 x - 8 + 8 = 0 + 8

    x = 8

Maru [420]3 years ago
4 0

Answer:

8 and 3

Step-by-step explanation:

We first want to add 5 to both sides, making the equation x^2 -11x +24=0, now, we want to use the quadratic formula, which is( -b <u>+</u> sqrt(b^2 -4ac)) /2a  

for equations of the form ax^2 + bx +c, so in our case, a =1, b=  -11, and c=24,

when you plug in the variables, you will get the answers!   :)

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The midpoint of AB is M(3,-1).If the coordinates of A are (8,4) what are the coordinates of B
Alchen [17]

Answer:

B(-2,-6)

Step-by-step explanation:

The midpoint of AB is M, then A(8,4), M(3,-1)

So we can find:

x_{B} =2x_{M} -x_{A}= 2*3-8= -2\\y_{B}= 2y_{M} -y_{A}  = 2*(-1)- 4= -6\\

then B(-2,-6), hope that useful.

6 0
4 years ago
Some college friends have decided to go on a road trip over the summer with some friends. Finances are tight and they need to hi
koban [17]

Answer:

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Step-by-step explanation:

Let

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The equations as per question are below

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Solve the system by substitution

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4 0
3 years ago
In this polygon, which angle is an interior angle?
Gelneren [198K]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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aniked [119]
Maybe its 18 :| but idk
4 0
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X + 2y = -3 x - y = -12
Nastasia [14]

Answer:

x = -9, y =3

Step-by-step explanation:

x + 2y = -3

x - y = -12

Subtract to two equations to eliminate x

x + 2y = -3

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Divide each side by 3

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Now we can find x

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Add 3 to each side

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5 0
4 years ago
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