Answer:
B
Step-by-step explanation:
If you substitute in the value x = 1, and y = 4 (based on the point given), (2x)^2 is the only expression that makes it work.
Hope this helps!!
The height of the chimney above the floor of the observation deck is 52.4 ft
Two right angle triangle will be formed.
<h3>Right angle triangle:</h3>
Right angle triangle are triangle that has one of its angle as 90 degrees.
Therefore, using trigonometric ratio,
adjacent side = distance of observer from the bottom edge of the Delaware River drawbridge observation deck
Therefore,
tan 40 = opposite / adjacent
Where
x = height of the observer to the top of the observation deck
tan 40 = x / 200
x = 200 tan 40
x = 167.819926235
x = 167.82 ft
tan 30 = opposite / adjacent
y = height of the observer to the bottom of the observation deck
tan 30 = y / 200
y = 200 tan 30
y = 115.470053838
y = 115.47 ft
The height of the chimney above the floor of the observation deck = height of the observer to the top of the observation deck - height of the observer to the bottom of the observation deck
The height of the chimney above the floor of the observation deck = 167.82 - 115.47 = 52.35 ft
learn more on trigonometric ratio here: brainly.com/question/23854119
The standard deviation of the sample proportion is:
The z-score for 0.7 is:
Reference to a standard normal distribution table shows that the probability that at least 70% of the sample prefers coke to pepsi is 0.8944 or 89.44%.
Answer: False.
Step-by-step explanation:
This says;
If we have an interval I, f(x) is increasing if, for any two x1, x2 such that:
x1 ∈ I and x2 ∈ I.
where x2 > x1, ----> f(x1) > f(x2).
An increasing function means that, if the value of x increases, also does the value of f(x).
Particularly, here we have that x2 > x1
so x can increase from x1 to x2.
But we have that f(x1) > f(x2)
So here we can see that the actual value of f(x) decreases as x increases.
Then this is not a increasing function, so the statement is false.
