Which inequality would represent the following situation? Mike has $60 to spend. He spent $12.50 to buy an new juicer mixer. He
needs to save $20.00 for a CD player that he wants to buy. He wants to buy as many plates as he can. If plates cost $2.50 each, what is the maximum number of plates that Mike can buy?
1 answer:
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Answer:
Law of Sines
Step-by-step explanation:
Law of Sines:
Step 1: Solve for m∠B
25sinx = 27sin36°
sinx = 27sin36°/25
m∠B ≈ 39.4°
Step 3: Find m∠C
180 - (36 + 39.4)
180 - 75.4
m∠C = 104.6°
Answer: a) Required minimum sample size= 219
b) Required minimum sample size= 271
Step-by-step explanation:
As per given , we have
Margin of error : E= 5% =0.05
Critical z-value for 90% confidence interval :
a) Prior estimate of true proportion: p=28%=0.28
Formula to find the sample size :-
Required minimum sample size= 219
b) If no estimate of true proportion is given , then we assume p= 0.5
Formula to find the sample size :-
Required minimum sample size= 271