Statistics
You have to find the z-score for both 50 and 70 minutes. Change the 1.02 hours to 61.2 minutes for the mean. z = (50 -61.2)/9 do the same for the 70 minutes. go to a standard z-table and find the area between those two values. Do the same thing for B. Your mistake was not havi...
Math
Use the formula that I gave you in the previous post.
Math
Area of a Triangle = 1/2 x b x h If your units are the same then just enter them into the formula.
math
See the one I just did. Here, you will have to change 960 m to mm 1000 mm = 1 meter
math
First change cm to mm 350 cm = 3500 mm Area = L x W 3500mm = L(50mm) Divide to solve for L
statstics
Check the links below. I answered this one last night.
math 7
There are 24 marbles 16 are either green or red 16/24 reduce to get the probability.
Math
(90, 220) and (76, 178) You have two points, so you can write an equation of a straight line in the form or y = mx + b First find the slope: m =(220-178)/(90-76) Once you have the slope. Use it and one of the points to find the equation of the line. To interpret the slope the ...
quick math
12 x 14 =168 square feet. If the pavers were 1 foot by 1 foot we would need 168 pavers BUT.. your paver is 8 inches which is 8/12 or 2/3 of a foot. It is 2/3 times 2/3 or 4/9 square ft 168 divided by 4/9 which is the same as 168 times 9/4 That will get you to 378.
algebra
John's distance = 10t Fred's distance = 12t John + Fred distance = 55 so 55 = 10t + 12 t You can find time in hours by solving the equation.
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