Answer:
Please check the explanation.
Step-by-step explanation:
Given the expression
Apply exponent rule: 
∵ 
Factor out common term 2y
We know that the Binomial is an expression that consists of two terms. Thus,
(4x²y²- 9) represents the binomial factor of
We can further simplify by Factoring 4x²y² - 9: (2xy + 3) (2xy - 3)
Here:
(2xy + 3) and (2xy -3) are the binomial factors of as each of them consists of two terms.
Probability is measured by the ratio of the favorable cases to the total number of possible cases.
the odds of winning the raffle are 1:7=1/7≈14.28%
the probability of winning a carnival game is 0.2=20%
so the carnival game gives you a better chance of winning
Answer:
z-test.
Step-by-step explanation:
We want to perform an hypothesis test for a population mean.
In the case that the <u>standard deviation of the population is known</u> and the population distribution is normal, even if the sample is small, <u>we will use a z-test</u>.
The usual case is to not know the standard deviation of the population, in which case a t-test is adequate instead of a z-test, taking into account the degrees of freedom of the sample.
The answer is B, I hope this helps! (don't forget to give brainliest)
