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90 plus b equals 2x70 so b equals?
90+b=2x70 90+b=140 90-90+b=140-90 b=50
What is the product of 72 and 70?
Product means multiply. So the product of 72 and 70 is 72x70. The answer is 5040.One way to do big products like this is do 70x70=4900. This is easy because 7x7=49.Now as 2x70=140. 4900+140 is 5040.
How should you prepare for the Track Season?
If you're a sprinter, you should be doing interval workouts, such as running 2x90 2x80, 2x70 meter workouts, it is espescially to work on lifting weights, don't try to max out but do lots of reps to make yourself explosive.Depends on what you're doing.Sprints-2 weight liftings a week and 3 track trainings (block work, 5x80m ect)Middle distance- 2 long runs a week at jog pace, and 3 speed sessions such as jog for a lap sprint a lap x4
What is the mean mode median of 64 64 64 65 65 65 65 67 67 68 68 70 70 72 73 76 79 80?
64 64 64 65 65 65 65 67 67 68 68 70 70 72 73 76 79 80. NB Place the numbers in RANK order. In this case it is already done #1 MODE ; is the term that occurs most frequently. In this case it is '65' , as there are four lots of '65' #2 MEDIAN ; is the term that occurs at the ABSOLUTE middle of the ranked order. Since there are eighteen terms, there is no absolute middle term. So we take the two middle terms that have the same number of terms to their side, that is terms nine & ten. They are 67 & 68. We then add these two together and halve the result. Hence (67 + 68) / 2 = 67.5. This is the median term. #3 MEAN ; is the sum of all the terms, which is the divided by the number of terms. Hence (64+64+64+65+65+65+65+67+67+68+68+70+70+72+73+76+79+80)/18 = 69' NB Another way of calculating the mean is ((3x64)+(4x65)+(2x67)+(2x68)+(2x70)+72+73+76+79+80)/18 = 69 NNB The word 'average' is casually used in the non-mathematical world, but the correct term is MEAN.
