Answer:
3) 16.2
Step-by-step explanation:
The supplement to the 115° angle on the right is 65°, the same as the angle at upper left. The vertical angles at C are the same measure, so this tells you that the two triangles FCB and ACD are similar by the AA similarity postulate. That being the case, corresponding sides are proportional:
CB/CD = CF/CA
CB = CD·CF/CA = 7.2·21.6/9.6
CB = 16.2
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When given two "point-to-point" triangles like this, quite often there is some sort of similarity relationship involved. First, you need to figure out what it is; then you need to make use of it as needed to answer the question being asked.
What is your question about that?
What grade are u? I'm just asking cause the formulas are going with grade I could help if u want me too
The answer would be C (17/6)
This is because;
6 goes into 17 twice leaving a reminder of 5.
It is B 4.4
Because of 2.2 is the first one and the second one should be 4.4 so it B. 4.4
