Hi,
Work:
Equation;
Collect like terms and calculate sum of positive numbers.
Move constant +63 to the right side and change its sign.
Subtract numbers.
Divide both sides of equation with 13.
Hope this helps.
r3t40
Answer:
5.2 Minutes, or 5 minutes and 12 seconds
Step-by-step explanation:
You can solve this problem by working backward. Since our number gets smaller by a 1/10 or 0.1, in order to work backward we must multiply 3.60 by 10/9, since one tenth has been taken away already. When we do this, we get 4.0. When we add 1.2 minutes to that, we get a final answer of 5.2 minutes, or 5 minutes and 12 seconds.
C + (4 - 3c) - 2 = 0
c + 4 - 3c - 2 = 0
c - 3c + 4 - 2 = 0
-2c + 2 = 0
<u> - 2 - 2</u>
<u>-2c</u> = <u>-2</u>
-2 -2
c = 1
Unit circle is the circle with radius of 1. Therefore, the circumference of the unit circle is 2pi*r. R equals to 1, so the circumference is just 2pi
