Consider the function y = 3x^2. How do the y-values of this function grow?
2 answers:
Answer:
Option D - by adding 3, then 9, then 15, …
Step-by-step explanation:
Given : Function
To find : How do the y-values of this function grow?
Solution :
From the following options the most suitable option is D.
As if we are going to add term and terms our y-values increases.
When we add any term in the function the y value value increases.
If we adding 3, then 9, then 15, … the function continuously grow term by term.
The new function became
Therefore, Option D is correct.
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Answer:
The height of the tower = 420.48 meters
Step-by-step explanation:
For better understanding of the solution, see the figure attached below :
Let the height of the tower be x meters
Now, using the laws of reflection : angle of reflection = angle of incidence
Also, both the tower and the tourist are standing parallel to each other
⇒ ∠A = ∠i ( Alternate interior angles are equal)
Similarly, ∠D = ∠r ( Alternate interior angles)
But, ∠i = ∠r
⇒ ∠A = ∠D
Also, the tourist and the tower is perpendicular to the ground surface.
⇒ m∠B = m∠E = 90°
Now, in ΔABC and ΔDEC
∠A = ∠D (Proved above)
m∠B = m∠E = 90°
So, by AA postulate of similarity of triangles, ΔABC ~ ΔDEC
As the sides of similar triangles are proportional to each other
Hence, The height of the tower = 420.48 meters
