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chubhunter [2.5K]
3 years ago
15

Tion of your knowledge on the nature of roots:

Mathematics
1 answer:
MAXImum [283]3 years ago
3 0

Answer:

The roots are not real.

Step-by-step explanation:

To prove : The roots of  I/2 +9 (1-k) are real for all real values of k ?Solution :

The roots are real when discriminant is greater than equal to zero.

i.e b2-4ac>0 But the roots are imaginary therefore the roots of the given equation are not real for any value of k.If x²+kx+k=0, find the value of k, If the roots are real & equal.​

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A digital clock displays military time in hh:mm format. Find the probability that the number made up of the first two digits on
egoroff_w [7]

Answer: The probability that the number made up of the first two digits on the clock is less than 25 is 1.

Step-by-step explanation:

The probability of an event is a number which describe the chances of the event will happen.

We know that on digital clock, the first two digits always show as number less that 25.

Therefore, the event that the number made up of the first two digits on the clock is less than 25 is certain.  [Since An event that is certain to happen has a probability of 1.]

Hence, the probability that the number made up of the first two digits on the clock is less than 25 is 1.

4 0
3 years ago
The perimeter of a triangle is 76cm side of the triangle is twice as long as side b .side c is 1 cm longer than a side a .find t
stepladder [879]
P= a+b+c = 76
side a = 2b = 30
side b = b = 15
side c = 2b + 1 = 31
7 0
3 years ago
What is the circumference of the circle defined by x^2+6x +y^2-12y-4=0.
KengaRu [80]

Answer:

44.0

Step-by-step explanation:

Mark me as brainliest

5 0
3 years ago
In triangle ABC if angle a - angle b = 63 degree and angle b - angle c = 18 degree find angle b
madreJ [45]
Angle B is 45, angle A is 108, angle C is 27

5 0
3 years ago
Preform the subtraction: (5x^2 -3xy +10y^2) - (12x^2 +11xz- 7z^2)
Rzqust [24]

we are given

(5x^2 -3xy +10y^2) - (12x^2+11xz-7z^2)

we have to subtract

step-1:  Distribute negative sign

=5x^2 -3xy +10y^2-12x^2-11xz+7z^2

step-2:Combine like terms

=5x^2 -12x^2-3xy -11xz+10y^2+7z^2

=-7x^2-3xy -11xz+10y^2+7z^2

we get

=-7x^2-3xy -11xz+10y^2+7z^2............Answer

3 0
3 years ago
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