w-(-3)=7
Pretend that there is a -1 in front of the bracket
w-1(-3)=7
Mutiply the bracket by -1
(-1)(-3)=3
w+3=7
Move +3 to the other side. Sign changes from +3 to -3.
w+3-3=7-3
w=4
Answer: w=4
You use the formula C=2(3.14)r r is the radius and in this situation 2 so the answer will be 12.56
Answer:
Your answer: 676
Step-by-step explanation:

Answer:
45
Step-by-step explanation:
a = 78/20=45
The two angles are 45 degrees.
Step-by-step explanation:
You are just halfing the 90 degree angle, so all you have to do is divide 90 by two, and you have 45.