If putting 5.2 and 4.5 in fraction form, her error must have been timing 3 by 3 to 5.2 and 4.5 as a fraction. Meaning that 5.5 and 4.8 is wrong
Values used with a function are called arguments. An argument in terms of logic and philosophy, it is the series of statements that are being used for such purpose and function. It is typically used to persuade someone to a different perspective of looking.
The question is asking for the circumference
The equation for circumference is C=2(Pi)r<span>
</span>to find the radius, half the diameter 4/2=2
the equation is now C=2(Pi)2<span>
simplify the equation...
C=4(Pi)
Pi is </span>3.1415926535897932384626433832795
Now multiply 3.1415926535897932384626433832795 times 4 = 12.566370614359172953850573533118
Round to nearest tenth...
12.6 mi
Answer:
No this is not the same as cos(2Ф)
Step-by-step explanation:
First I changed the 
Ф into 1-
Ф
I then foiled the (1-2Ф)(1-Ф) and that resulted in 1-Ф-2Ф+2
Ф
From there, I then cancelled the two 2Ф and combined like terms and was left with 1-3Ф
Now 1-3Ф ≠ cos(2Ф)
