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devlian [24]
3 years ago
11

if a quadratic equation with real coefficients has a discriminant of -36 then what type of roots does it have

Mathematics
1 answer:
Aleks04 [339]3 years ago
5 0

Step-by-step explanation:

We have,

If a quadratic equation with real coefficients has a discriminant of -36.

The general form of quadratic equation is :

ax^2+bx+c=0

The discriminant of this equation is : D=b^2-4ac

If D=0, it will have 1 real roots

If D>0, it will have 2 real roots

If D<0, it will have no real roots

We have,

D = -36 < 0, so, the quadratic equation will have no real roots.

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kiruha [24]

Answer:

42

Step-by-step explanation:

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70 = 5x + 13 + 3x + 33

70 - 13 - 33 = 8x

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3 = x

Replacing x in Angle ABC:

3 * 3 + 33 = 42

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A cart is coasting past Gordon. As it passes, he exerts a force on it. Whether the cart speeds up, slows down, or changes direct
Ksivusya [100]

Answer:

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Step-by-step explanation:

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vivado [14]

Answer:

165 different teams of 3 students can be formed for competitions

Step-by-step explanation:

Combinations of m elements taken from n in n (m≥n) are called all possible groupings that can be made with the m elements so that:

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That is, a combination is an arrangement of elements where the place or position they occupy within the arrangement does not matter. In a combination it is interesting to form groups and their content.

To calculate the number of combinations, the following expression is applied:

C=\frac{m!}{n!*(m-n)!}

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Solving:

C=\frac{11!}{3!*8!}

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So:

C=\frac{39,916,800}{6*40,320}

C= 165

<u><em>165 different teams of 3 students can be formed for competitions</em></u>

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Answer:

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Step-by-step explanation:

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