The solution is 2sqrt77/77. You just fill in 2/3 for the x's. When you do that, you do that you get (2/3)/sqrt(9-[2/3]^2) which, simplified, is (2/3)/sqrt(9-[4/9]). Now use the common denominator under the radical of 9 to get (2/3)/sqrt([81-4]\9). Simplifying even further gives you (2/3)/([sqrt(77)]/3). Now do that division by multiplying 2/3 by the reciprocal of ([sqrt(77)]/3) to get 2/sqrt77. I rationalized the denominator to get that result up there.
Hello from MrBillDoesMath!
Answer:
Choice E and F
Discussion:
From the quadratic formula with a = 3, b = -1, and c = 6
x = ( -b +\- sqrt(b^2 - 4ac) ) / (2a) => substitute in a,b,c from above
x = ( -(-1) +\- sqrt((-1)^2 - 4(3)(6)) / (2*3) => discriminant = 1 - 72 = -71)
x = ( 1 +\- sqrt(-71))/ 6
which are choices E and F
Thank you,
MrB
The answer is B ..................
To find the mean, add up all of the miles and divide by the number of years. 12100 + 15758 + 12200 + 11800 + 12750 = 64608. 64608/5 = 12921.9. The mean (the average) is 12,921.9 miles.
To find the median, put the numbers in order and find the middle number. The middle number is 12200. The median (middle number) is 12,200 miles
To find the mode, you would look for the number that is repeated the most. In this data set, no number repeats, so there is no mode. There is no mode for this data set.
The mean (average) would be the best measure of central tendency to predict how many miles Gina will drive in the sixth year.
I hope this helps! Can I have Brainliest, please? :)
