Answer:
B is correct
Step-by-step explanation:
Hope I helped you and have an amazing day
A coefficient is a number being multiplied by a variable. For example, the 3 in 3x is being multiplied by x.
-1(x-1)(4x-9) +(x-1)(x-5)
(x-1)(-1(4x-9) +x-5)
(x - 1)(-4x + 9 + x - 5)
(x - 1)(-3x + 4)
Answer: It is a strong positive correlation,and it is not likely causal.
Step-by-step explanation: Correlation Coefficient value is used to determine the strength of linear relationship between two variables. The value ranges from - 1 to +1.with negative values depicting a negative relationship and positive values showing positive relationship. Value of 0 implies that, no relationship exists. The closer the correlation Coefficient value is to +1 or - 1, the greater the strength of the relationship between them. Also correlation does not mean causation. Hence, a correlation coefficient of 0.74 depicts a strong positive relationship. However it doesn't imply causation.
QUESTION 1
We want to solve,
We factor the denominator of the fraction on the right hand side to get,
This implies
We multiply through by LCM of
We expand to get,
We group like terms and equate everything to zero,
We split the middle term,
We factor to get,
But
is not in the domain of the given equation.
It is an extraneous solution.
is the only solution.
QUESTION 2
We add x to both sides,
We square both sides,
We expand to get,
This implies,
We solve this quadratic equation by factorization,
But
is an extraneous solution