Ok, we know that there are 270 degrees in a triangle, so just add 49+57, the you'll get 106, 270-106=164. ANSWER: 164
Could be 21. Try replacing function designators with the actual functions.
Answer:
About 4 hours.
Step-by-step explanation:
Let's set up a proportion and cross multiply.

Cross multiply.
120 = 28x
Divide by 28 on both sides.
= 4.28571428571
Round this to the nearest whole number, which is just 4. The answer is about 4 hours.
Could you send a picture of the question