Answer:
Step-by-step explanation:
Recall that the quadratic formula gives you the pattern to follow in order to find the solutions to a quadratic equation of the form:
It tells us that we need to use the parameters and in the following formula in order to get the answers for the x-values that solve it:
so, in our case, , , and
then, replacing these values in the formula, we obtain:
Which looks like the third expression you are listing (although it is a little hard to read)
The slope of the lines represent the runners' speeds. Therefore, the purple line represents Jerry, since he started off faster but also stopped in the middle, and the slope became 0 (horizontal portion of the line.)
The red one represents Katja because she started and ended at a constant pace, which is visible in the red line's constant slope.
Suppose the probability of being picked first in your class is 0.05. The odds of being picked first expressed in form of a: b is 1 : 19.
A probability is a number that represents the possibility or chance that a specific event will occur.
From the given information;
- Let assume the total number of people in the class is whole = 1
∴
The odds of being picked first can be computed as:
= 1 : 19
Therefore, the odds of being picked first in terms of a: b is 1 : 19
Learn more about probability here:
brainly.com/question/11234923?referrer=searchResults
We want to use a matrix to solve
-8x - 8y = -16
6x - 9y = -108
Before solving, simplify the equations as follows:
Divide the first equation by -8 to obtain
x + y = 2 (1)
Divide the second equation by 3 to obtain
2x - 3y = -36 (2)
In matrix form, the equations are
The determinant of the matrix is
D = (1)(-3) - (1)(2) = -5
Use Cramer's Rule.
Similalrly,
Answer: (-6, 8) or x = -6, y = 8
X= 2i(square root of 6), -2i(square root of 6)