2/3 times 90/1 equals 180/3, which is 60 degrees.
The area of the triangle is 12.72unit
Example 1:
The pros of Orthographic is that they can show hidden details and all of the connecting parts, they can be annotated to display material and finishes. The pros of Isometric projection is that they dont need many views and it gives accuracy, cons are is created a unorginized apperance by the lack of foreshortening, I would choose Isometric projection because it shows the size of the figure.
Example 2:
Orthographic projection is a good option for showing lots of detail and small things. The limitation is that with all of that detail, they can become quite messy and hard to understand to someone new to them. However, that is one of the pros of Isometric projection. It gives easy detail and is just as good as an Orthographic. Personally, I find Isometric projections easier to interpret.
Answer: $19.6
Step-by-step explanation:
Linear function: f(x)=mx+c
, where m= rate of change in f(x) with respect to x.
c = Initial value.
Let c = Initial value of card , m= Charge per minute
x= Number of minutes calling time.
Then, 25.06= 38m+c (i)
21.03=69m+c (ii)
Eliminate (ii) from (i)
![4.03=-31m\\\\\Rightarrow\ m=\dfrac{4.03}{-31}\\\\\Rightarrow\ m=-0.13](https://tex.z-dn.net/?f=4.03%3D-31m%5C%5C%5C%5C%5CRightarrow%5C%20m%3D%5Cdfrac%7B4.03%7D%7B-31%7D%5C%5C%5C%5C%5CRightarrow%5C%20m%3D-0.13)
Put m in (i) , we get
![25.06= 38(-0.13)+c\\\\\Rightarrow\ 25.06=-4.94+c\\\\\Rightarrow\ c=25.06+4.94\\\\\Rightarrow\ c=30](https://tex.z-dn.net/?f=25.06%3D%2038%28-0.13%29%2Bc%5C%5C%5C%5C%5CRightarrow%5C%2025.06%3D-4.94%2Bc%5C%5C%5C%5C%5CRightarrow%5C%20c%3D25.06%2B4.94%5C%5C%5C%5C%5CRightarrow%5C%20c%3D30)
i.e. f(x)=-0.13x+30
if x=80 then
f(80)= -0.13(80)+30
=-10.4+30
=19.6
Hence, the remaining credit after 80 minutes of calls = $19.6