Answer:
47×3+c
Step-by-step explanation:
141+c
The law of cosines states that:
c^2=a^2+b^2-2abcosC
You already have all the values for the variables with the exception of x so:
x^2=25+100-100cos60
x=√(125-100cos60)
x=√75
x≈8.66 to nearest one-hundredth...
To estimate:
99.1 can be approximated by 100-1%
11.2 can be approximated by 11.1+1%
So 99.1*11.2 can be approximated by (100*11.1)-1%+1%=1110
