6c^2 - c + 1 + 4c - 2c^2 - 8c
= 4c^2 - 5c + 1
= (4c - 1)(c - 1)
Answer: There are no real number roots (the two roots are complex or imaginary)
The discriminant D = b^2 - 4ac tells us the nature of the roots for any quadratic in the form ax^2+bx+c = 0
There are three cases
- If D < 0, then there are no real number roots and the roots are complex numbers.
- If D = 0, then we have one real number root. The root is repeated twice so it's considered a double root. This root is rational if a,b,c are rational.
- If D > 0, then we get two different real number roots. Each root is rational if D is a perfect square and a,b,c are rational.
Answer:
0.599 is the probability that a randomly selected page does not need to be retyped.
Step-by-step explanation:
We are given the following in the question:
The number of typing errors made by a typist has a Poisson distribution.
The probability is given by:
We have to find the probability that a randomly selected page does not need to be retyped
P(less than or equal to 7 mistakes in a page)
Thus, 0.599 is the probability that a randomly selected page does not need to be retyped.
The answer is the number that 'Y' must be in order for
the equation to be true.
That number is called the 'solution' to the equation.
Here's one way to go about finding it:
You said that - 6y - 3 = 3 - 6y
Add 6y to each side: - 3 = 3
Let's stop right here.
Is there any value of 'Y' that can make -3 = 3 ?
I don't think so.
Your equation has NO SOLUTION.
There is NO NUMBER that you can write in place of 'y'
in your equation
- 6y - 3 = 3 - 6y
and have it work out to be true.
That's OK. There are lots of equations that have no solution.
Answer:
The expression for Annika is $ 4x and Chris is $ (x + 10).
Step-by-step explanation:
Given that Annika has 4 times more than Bob and Chris has $10 more than Bob. So the expressions will be :
Annika = 4 × x = 4x
Chris = 10 + x
