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frozen [14]
4 years ago
15

How can you solve quadratic equation in one variable using quadratic formula?​

Mathematics
1 answer:
Semmy [17]4 years ago
4 0

Answer:

Step-by-step explanation:

Here are the steps required to solve a quadratic using the quadratic formula:

Example 1 – Solve: x²-8x+14=0

Step 1: Identify a, b, and c and plug them into the quadratic formula. In this case a = 1, b = –8, and c = 14.

Step 2: Use the order of operations to simplify the quadratic formula.

Step 3: Simplify the radical, if you can. In this case you can simply the radical into:

Step 4: Reduce the problem, if you can. In this case you can reduce the entire problem by 2.

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Determine whether each scale factor produces an expansion or a contraction under a dilation of the original image
blondinia [14]

Answer:

see the explanation

Step-by-step explanation:

we know that

If the absolute value of the scale factor is less than 1, then the dilation produces a contraction of the original image

If the absolute value of the scale factor is greater than 1, then the dilation produces an expansion of the original image

so

<u><em>Verify each value</em></u>

1) -4

\left|-4\right|=4

4> 1

therefore

The dilation produces an expansion of the original image

2) 0.25

\left|0.25\right|=0.25

0.25 < 1

therefore

The dilation produces a contraction of the original image

3) -2/3

\left|-2/3\right|=2/3

2/3 < 1

therefore

The dilation produces a contraction of the original image

4) 2.3

\left|2.3\right|=2.3

2.3 > 1

therefore

The dilation produces an expansion of the original image

4 0
3 years ago
A pilot took 1/2 hours to complete his 1/3 pf his ttip how much longer will it take him to complete his trip?
Norma-Jean [14]

Answer:

1.5 hours

Step-by-step explanation:

1/2 + 1/2 + 1/2 =1.5

7 0
3 years ago
Plz help..............
IrinaVladis [17]
The correct answer is -15 because the absolute value is 15 but there is a negative outside the absolute value lines making it negative :)
7 0
3 years ago
Read 2 more answers
Find the quotient and any excluded values.<br><br> (x + 5/x^2 + 9x + 20)/(x^2-16/x-4)
Wittaler [7]
By  <span>(x + 5/x^2 + 9x + 20) you apparently meant the following:

         x+5
 ----------------------
   x^2 + 9x + 20

and by 

</span><span>(x^2-16/x-4)
                                       x^2-16
you apparently meant ---------------
                                         x - 4

Please use additional parentheses for clarity.

Dividing,

</span>         x+5                   (x-4)(x+4)
 ----------------------  *  ---------------
   x^2 + 9x + 20                  x-4

Now, x^2 + 9x + 20 factors into   (x+4)(x+5), so what we have now is

       (x+5)(x+4)
------------------------- = 1           This is true for all x, so there are no exclusions.
    (x+4)(x+5)
3 0
3 years ago
One winter day, the outside temperature, y, was never below −1°. The inside of a car was always warmer than the temperature outs
sammy [17]

Answer:

The correct option is;

On a coordinate plane, 2 straight lines are shown. The first solid line is horizontal to the y-axis at y = negative 1, Everything above the line is shaded. The second dashed line has a positive slope and goes through (0, negative 4) and (2, negative 2). Everything above and to the left of the line is shaded

Step-by-step explanation:

The inequality representing the first line is y ≥ -1

The inequality representing the second line is y > x + 4

Therefore, the first line is a solid horizontal line with the shaded region above the line

The second line is a line with a broken line with positive slope slope with the shaded region being above the line and to the left

4 0
3 years ago
Read 2 more answers
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