Cosine rule
Cosx=(11 ²+8²-(15²))/2(11)(8)
Cosx=(121+64-225)/176
Cosx=-40/176
Cosx=-5/22
X=cos-1 -5/22
X=103.1
Answer:
6x(x+2)
Step-by-step explanation:
Factor 6x out of 6x^2+12x
6x(x+2)
Answer:

Step-by-step explanation:
The solution is -4/9x + 1
Since 1 pound is $3.09, 4.5 pounds will be:

It says to round to nearest hundredth, so your answer is $13.91.