Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
Applying the law of cosines

substitute the given values


C or D because C and D seem both reasonable answers but I would choose C
Answer:
$48.15 APEX
Step-by-step explanation:
m=24=+(-9,1,3
3
Step-by-step explanation:
Substitute n=3,\pm 1n=3,±1 into 3m-9n=243m−9n=24
Solve for mm in 3m-(-9,1,3)=243m−(−9,1,3)=24
I got 0.03654595................... ignore me I'm dumb