Answer:
The percent error of Jocelyn's estimate is 2.14 .
Step-by-step explanation:
Formula

Where

As given
Jocelyn estimates that a price of wood measures 5.5 cm.
If it actually measures 5.62 cm.
approx value = 5.5 cm
exact value = 5.62 cm
Put in the error formula


error = 0.12
Put in the formula


Percentage error = 2.14 (Approx)
Therefore the percent error of Jocelyn's estimate is 2.14 .
Answer:
I need more information about the question please so I can happily help you.
Answer:
Step-by-step explanation:
First you have to calculate CB in order to use sin law to calculate ∠A
CB=
CB=12.8(correct to nearest tenth)
After that, use sin law to calculate ∠A,
or 
sinA=0.695...
A=44.079...
=44.1(corrext to the nearest tenth)
Is that clear enough for you?