How do I find roots from a quadratic equation

1 answer:

6 0

Answer:The roots of any quadratic equation is given by: x = [-b +/- sqrt(-b^2 - 4ac)]/2a. Write down the quadratic in the form of ax^2 + bx + c = 0. If the equation is in the form y = ax^2 + bx +c, simply replace the y with 0. This is done because the roots of the equation are the values where the y axis is equal to 0.

Step-by-step explanation:

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In a store the number of dogs is 12 times greater than 3 times of cats. If there are 21 dogs in the store, how many cats are in

user100 [1]

Answer:

If you really meant that the number of dogs is 12 greater than 3 times the number of cats then:

3 cats

Step-by-step explanation:

21= number of dogs

c = number of cats

21 = 12 + (3c)

3c = 9

c = 3

8 0

3 years ago

barxatty [35]

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Explanation...

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Your slope is 2 so we input that and the y intercept is 100 giving us the equation y=2x+100.

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6 0

3 years ago

True or false? I'm a two column proof the left Colin a series of deductions

Likurg_2 [28]

Your question is confusing, please make it more detailed or provide a picture and ill Edit this answer.
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6 0

3 years ago

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Make up your own “which one doesn’t belong” example:

Stolb23 [73]

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4 years ago

What is the area of the composite figure whose vertices have the following coordinates? (−1, 5) , (3, 5) , (7, 3) , (3, 0) , (−1

trasher [3.6K]

We can see the figure as two triangles and a square.
We have then:
Area of the square:
A1 = (4) * (4)
A1 = 16
Area of the small triangle:
A2 = (1/2) * (4) * (1)
A2 = 2
Area of the big triangle:
A3 = (1/2) * (5) * (4)
A3 = 10
The area of the figure is:
At = A1 + A2 + A3
At = 16 + 2 + 10
At = 28units²
Answer:
The area of the figure is:
At = 28units²
Note: see attached image

5 0

4 years ago