Answer:
B) sin Ф
Step-by-step explanation:
Use the pythagorean identity for cos and tan
tan =
Multiply both sides by cos
sin Ф = sin Ф
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Answer:
3 days
Step-by-step explanation:
company A would have the equation 50x+40 =y and company B would be 30x + 100 =y. we're tying to find the days that these cost the same so you would do 50x+40 = 30+100. When you isolate x you get 3
Answer:

Step-by-step explanation:

For positive rate of change 

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