Answer:
s= 15 (nearest integer), 14.8 (to nearest 10ths)
Step-by-step explanation:
here you need to apply the cosine rule,

substituting the values,
u= 13, t=5 and angle S as 60 and solving will give you the answer 14.76 (2 dp)
I think it’s the last one but I’m not sure
Answer:
12.7
Step-by-step explanation:
Define your two QUESTIONS
Write your system of EQUATIONS
SOLVE the system of equations.
Find the SOLUTION to the question being asked.
By pascal triangle this second term should be
5s^4v<span />