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Dominik [7]
3 years ago
6

What conditions give 2 roots, one root and no root?

Mathematics
1 answer:
hichkok12 [17]3 years ago
8 0
The discriminant D is found by this formula

D = b^2 - 4ac

there are 3 possible outcomes

1) If D is smaller than 0, ie D < 0, then there are no roots

2) If D is equal to zero (D = 0), then there is exactly one root. This root is rational assuming the coefficients are integers. This is called a double root

3) If D > 0, then there are 2 different roots. If D is a perfect square, then these two roots are rational numbers (aka fractions of whole numbers) assuming the coefficients are integers. If D is not a perfect square, then the two roots are irrational numbers. 
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.4706 or 47.06% 
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5 0
4 years ago
Ab with endpoints A(4,-6) and B(-4,2)
gayaneshka [121]

Answer: d_{AB}=11.31\ units

Step-by-step explanation:

The formula for calculate the distance between two points is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

In this case, given the points A(4,-6) and B(-4,2), we can identify that, we just need to substitute values into the formula in order to calculate the distance between the given points.

Thierefore, this is (Rounded to the nearest hundred):

d_{AB}=\sqrt{(4-(-4))^2+(-6-2)^2}\\\\d_{AB}=11.31\ units

4 0
4 years ago
Linear equations
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Answer:

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3 0
3 years ago
I need help with this can you show me how to work it out pls
JulsSmile [24]

Answer:

Answer is in the pic

Step-by-step explanation:

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so originally k (-2,5)    m (-3,1)      l (1,1)

add 3 to x so

k (1,5)   m (0,1)   l (4,1)

3 0
3 years ago
Use the graph to determine how many solutions exist for the system -4x + 3y = 12 x + y = 2
LiRa [457]

Answer:

B. 1

Step-by-step explanation:

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