Answer:
For C all she has to do is look at the chart-
0=0
1=4
2=8
3=12
4=16
Answer: (14.18, 15.08)
Step-by-step explanation:
Given : Sample size : n= 64
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
The confidence interval for population mean is given by :-
Hence, the 90% confidence interval for the population mean of waiting times is (14.18, 15.08).
Answer:
5.85 is the total after the discount. The amount taken off is 1.95.
Step-by-step explanation:
The cash price of the ring was $ 16,560.80.
Knowing the down payment, the interest rate and the monthly payments, to determine what is the cash price of the ring, the following calculation must be performed, applying the compound interest formula:
- Initial value x (1 + interest rate / compounding times) ^ (years x compounding times) = Compound interest
- X x (1 + 0.072 / 12) ^ 3.5x12 = 360 x 42
- X x 1.006 ^ 42 = 15,120
- X x 1.2856 = 15,120
- X = 15,120 / 1.2856
- X = 11,760.80
- 11,760.80 + 4,800 = Cash price
- 16,560.80 = Cash price
Therefore, the cash price of the ring was $ 16,560.80.
Learn more in brainly.com/question/24962101
<span>x + 3y = −1
2x + 2y = 6
</span><span>x + 3y = −1
x +3y -3y = -1 +3y
x= -1 +3y
2x + 2y =6
2(-1 - 3y) + 2y = 6
-2 -6y + 2y = 6
-2 -4y =6
-2+2 -4y = 6+2
-4y = 8
-4y/-4= 8/-4
y = -2
</span><span>2x + 2y = 6
</span><span>2x + 2(-2) = 6
2x + -4 = 6
2x -4 +4 = 6+4
2x = 10
2x/2 = 10/2
x = 5
Check
</span>
<span>2x + 2y = 6
2(5) + 2(-2) = 6
10 + -4 = 6
6 = 6
So the answer is (5,2)
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