15
There are infinitely many possible answers:add 8multiply by 2 and subtract 1multiply by 3 and subtract 10multiply by 4 and subtract 19etc are all possible rules.
You can subtract 2 from 21 a total of 10 times. This is because each time you subtract 2, you are left with 19, and you can repeat the process until you reach 1. Mathematically, this can be represented as 21 - 2 = 19, 19 - 2 = 17, and so on until you reach 1.
57
It is: (5*12)-2 = 58
Just write it as 2 to the power n. You can't simplify that, and you can only calculate a specific value if you know the value of n.
15
5
(17-8)/2
By the signs: 2+2(Add) 2-2(Subtract) +=add -=subtract
To calculate (5^{8} - 2 \times 3), first find (5^{8} = 390625). Then, calculate (2 \times 3 = 6). Finally, subtract: (390625 - 6 = 390619). Thus, the value is (390619).
To calculate the difference in pH strength of a solution, subtract the initial pH value from the final pH value. For example, if the initial pH is 5 and the final pH is 3, the difference in pH strength would be 2.
20 minus 17 minus 3 minus 2 equals -2
percentage change of 2 to 36 = 1700%% increase =|original value - new value|/original value * 100%= |2 - 36|/2 * 100%= 34/2 * 100%= 17 * 100%= 1700%
The time from 8:17 AM to 11:00 AM is 2 hours and 43 minutes. To calculate this, you can subtract 8:17 from 11:00, which gives you 2 hours until 10:17 AM, plus an additional 43 minutes to reach 11:00 AM.
Square the standard deviations, subtract/add them and calculate the square root of the subtraction/sum. StDV=sqrt (StDvA^2+StDvB^2)
I don’t know
The answer is -26. -26 x -2 = 52 52 - 17 = 35