Answer:
the first is 70 and the second is 140
Step-by-step explanation:
First of all, we have to observe this triangles separated by the height. These small and big triangles are similar according to the Angle-Angle-Angle principle.
a. We can find all of these length using the cosine of the angle, Pythagoras theorem and the principle of the similarity of triangles.
b. According to the cosine of the angle we can write that, cosθ = 12/a = 5/13 and from here a = 31.2. After finding that using Pythagoras theorem, we can write that 
. According to the similarity of the triangles, we can write that 31.2/d = 28.8/12 and d = 13. Applying Pythagoras theorem we find that c = 5.
c. We already gave the answer for this question in part b
Answer:
Option C is the correct answer.
Step-by-step explanation:
We are given,
<em>A graph where the function first increases and then decreases to touch the x-axis and the increases.</em>
It is required to find the corresponding situations.
So, from the options we have that,
The graph represents the speed of a vehicle which first increases (as it accelerates), then decreases (slows down) and then touch the x-axis (stops at the light) and then increases (accelerates on the ramp for a freeway).
Hence, option C is scenario that the graph describes.
