Her total bill is $186 because :
(3x39)+15+(2x27)
Answer:
C
Step-by-step explanation:
150 times 7 divided by 35
You can use the sum and difference identities which for cosine is cos(a+b)= cosacosb-sinasinb
Positive.
I'm assuming its like:
What's - / -.
If that's the case the quotient would be positive.