Answer: you will use the cosine rule
Step-by-step explanation:
x^2=11^2+8^2-2(11)(8)xcos(16)
x^2=185-169.18
x^2=15.8
Take square root
x=3.96 or 4
60*0.08 Multiply the price of the sweater by 0.08, or 8%
4.8 solution
60-4.8 Subtract discount from original price
55.2 solution
7/100=a/55.2 construct formula to find sales tax
a=3.864 solution
55.2+3.864 add solution to discounted price
59.064 solution
$59.06 round down to 59.06
It will be less than 60 dollars because, according to the work shown, 59.06<60.
Answer:
d= 4
or 5.66
Step-by-step explanation:
(-2,7) and (2,3)
d = 
d= 
d = 
d= 4 or 5.66
Answer:
1= 0.25feet per 1 second
2.= 120 seconds
3. 72 seconds or 1 minute 12 seconds
Step-by-step explanation:
1.= 2/8=1/4=.25
2.= 50-20=30
30/.25=120
3.= 18 feet/.25 feet= 72 seconds
Answer:
t = In2/ r
Step-by-step explanation:
Given the formula : A = Pe^rt
For investment to double ;
Final amount (A) = 2 * initial investment (p)
A = 2p
Hence,
2p = pe^rt
2 = e^rt
Take the In of both sides
In2 = rt
Divide both sides by r
In2 /r = rt /r
In2/ r = t
t = In2/ r ; Hence, the proof
