Answer:
I'm not sure lalalal
Step-by-step explanation:
Answer:
one solution and one only
Which two equations represent the same function?
A) y = 2x – 7 and f(x) = 7 – 2x
<span>B) 3x = y – 2 and f(x) = 3x – 2</span>
<span>C) f(x) = 3x2 + 5 and y = 3x2 + 5</span>
D) None of the above
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<span>A) <span>y </span>= 2x – 7 and f(x) = 7 – 2x</span>
Incorrect. <span>These equations look similar but are not the same. The first has a slope of 2 and a y-intercept of −7. The second function has a slope of −2 and a y-intercept of 7. It slopes in the opposite direction. They do not produce the same graph, so they are not the same function. The correct answer is f(x) = 3x2 + 5 and y = 3x2 + 5.</span>
B) 3x = y – 2 and f(x) = 3x – 2
Incorrect. <span>These equations represent two different functions. If you rewrite the first equation in terms of y, you’ll find the equation of the function is <span>y </span>= 3<span>x + </span>2. The correct answer is f(x) = 3x2 + 5 and y = 3x2 + 5.</span>
C) f(x) = 3x2 + 5 and y = 3x2 + 5
Correct. <span>The expressions that follow f(x) = and y = are the same, so these are two different ways to write the same function: f(x) = 3x2 + 5 and y = 3x2 + 5. </span>D) None of the above
Incorrect. <span>Look at the expressions that follow f(x) = and y =. If the expressions are the same, then the equations represent the same exact function. The correct answer is f(x) = 3x2 + 5 and y = 3x2 + 5.
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Answer:
a. The average daily amount of time an adult spends on the internet is different than 4.5 hours.
Step-by-step explanation:
An internet provider states that, on average, the daily amount of time an adult spends on the internet is 4.5 hours.
At the null hypothesis, it is claimed that the mean is of 4.5 hours, that is:
A sociologist studying the behaviors of internet consumers believes the average daily amount an adult spends on the internet is different than the amount stated by the internet provider.
At the alternative hypothesis, the sociologist claim, is that the mean is different of 4.5, that is:
Thus, the correct answer is given by option a.
