Answer:
106
Step-by-step explanation:
Answer:
33 1/3
Step-by-step explanation:
turn to improper for a simpler answer
6 2/3 = 20/3
20/3 ÷ 1/5
whenever you divide fractions, you change the symbol to multiplication and divide with the reciprocal, so you get:
20/3 * 5/1
multiply
20 * 5 = 100
3 *1 = 3
100/3
is equal to 33 1/3
Well, since the exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 6% of 80%, that means there is a 90% confidence interval. 9 / 10 = .90 = 90% 90% = 1.645 1.645 * .9 = 1.4805 Margin of Error - 1.4805and The margin of error is the distance from x-bar, the center of the confidence interval ,to the end of the interval. This distance is 6% of 80% which is given by: 80×6100=4.8 Therefore the margin of error is 4.8% and the confidence interval is: ({80 - 4.8}%, {80 + 4.8}%)
X= 1,-3 If you factor equation you get x-1=0 and x+3=0
