each gallon is 4 quarts, so there are 17 quarts altogether.
Monday, November 25, 2013 at 11:16pm
since the zeros of the quadratic are -4 and 3 we can say: f(x) = a(x+4)(x-3) so the only thing we don't know is a possible coefficient. but f(1) = - 30 -30 = a(1+4)(1-3) -30 = -10a a = 3 f(x) = 3(x+4)(x-3) expand if so needed
Monday, November 25, 2013 at 8:22pm
In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4 1 2 7 10 3 5 = 3.88 X= 5.13 s = 2.03 s = 2.90 ...
Monday, November 25, 2013 at 3:36pm
x^3 - 3x^2 - 9x + 27 < 0 x^2(x-3) - 9(x-3) < 0 (x^2-9)(x-3) < 0 (x+3)(x-3)^2 < 0 Now, even without going through all the +/- combinations of factors, which can get tedious, you know that this curve crosses the x-axis at x = -3, and is tangent at x = +3. So, it is ...
Sunday, November 24, 2013 at 6:55pm
Typing speeds among college students are normally distributed with a mean of 60 words, and a standard deviation of 10 words. determine the typing speed that separates the top 6% typists from the rest.
Sunday, November 24, 2013 at 3:55pm
college problem solving 3
the sum of the distances traveled by each train is one trip. Since distance = speed * time, if x is the time traveled by the fast train, x/3 + (x+3/2)/4.5 = 1 x = 6/5 So, in 1.2 hours, the trains meet. That is, at 4:12
Sunday, November 24, 2013 at 2:09pm
college problem solving 2
It's not clear who is working and who is just talking.
Sunday, November 24, 2013 at 2:07pm
college problem solving
let the tens digit be x and the unit digit be y then the number is 10x + y 10x+y = (x+7y) - 6 9x - 6y = -6 3x - 2y = -2 , #1 the number reversed would be 10y + x so 10y+x = 10x+y + 27 9x - 9y = -27 3x - 3y = -9 , #2 #1 - #2 y = 7 then from #1, x = 4 the number is 47 check: ...
Sunday, November 24, 2013 at 2:02pm
x = 11% y = 9% x + y = 9500 11x + 9y = 97300 x = 5900 y = 3600
Saturday, November 23, 2013 at 5:11pm
Thirty five percent of adult americans are regular voters. A random sample of 250 adults in a medium size college town were surveyed, and it was...Estimate the true proportion of regular voters with 90% confidence and comment on the results.
Friday, November 22, 2013 at 1:27am
College Algebra (?)
What line? Graphics cannot be posted.
Thursday, November 21, 2013 at 5:33pm
Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you. See your later post.
Thursday, November 21, 2013 at 2:24pm
In the following sentence, the comma is used correctly with an introductory clause: Training for the upcoming ten-mile marathon, Lizette includes more protein and complex carbohydrates in her diet. (Points : 1) True False
Wednesday, May 19, 2010 at 9:33am