The discriminant is b²-4ac
when the discriminant is 0, there is only one solution.
Answer:

On this case n =6 and x =6 we got:

Step-by-step explanation:
The utility for the combination formula is in order to find the number of ways to order a set of elements
For this case we want to find the following expression:

And the general formula for combination is given by:

On this case n =6 and x =6 we got:

Answer:
x=45
Step-by-step explanation:
An entire triangle is 180 degrees and you already know that one angle is 90 degrees. 180 - 90 is 90. Now you have the equation 2x=90.
You then divide each side by 2 to get the x by itself which leaves you with x=45.
Answer:
x>= -8
Step-by-step explanation:
Hope the above image help..
Visit Quick math if you have problems with inequalities
Given:
Speed limit on a highway is 110 km per hour.
Let x be the speed of the car in time 't'

time when taken for a car to travel 132km.

It takes minimum 1 hour 12 minutes