If your asking what the price of something is, that was originally 29.99, and has been marked down by 33.33%, the easy way to do this is to take 30 and multiply it by 1/3, resulting in 20. The proper way is to take your calculator and multiply 29.99 by 0.333, resulting in roughly 9.98, meaning the price you pay is 20.00. Either way, your still going to pay $20 for the item.
Answer:
Step-by-step explanation:
a). Mean of the given data set = 
= 28
b). x 
32 32-28 = 4 16
28 28 - 28 = 0 0
18 18 - 28 = -10 100
40 40 - 28 = 12 144
22 22 - 28 = -6 36
= 296
c). Standard deviation = 
= 
= 7.69
d). Mean of the new set of weights = 
= 34
Since mean of the data set is more close to each data, standard deviation will be less than the deviation given in part (c).
The total amount that Chang will received from his wages is the product of his hourly wage times the number of hours he has worked (n). His total savings should not be less than $125. The equation that best describes the situation is,
45 + 7n ≥ 125
Solving for n in the inequality gives an answer of n≥11.42 hours. Thus, he needs to work for at least 12 hours.
Answer:
The correct answer is D. (1,6)
Step-by-step explanation:
When plugged into the equations, it is written 10(1) + 2(6) = 22 and 3(1) - 4(6) = -21. For the first one, 10 x 1 = 10 and 2 x 6 = 12. 10 + 12 = 22. For the second one, 3 x 1 = 3 and 4 x 6 = 24. 3 - 24 = -21. This makes both equations correct, making (1,6) the answer.
