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 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%
Square the standard deviations, subtract/add them and calculate the square root of the subtraction/sum. StDV=sqrt (StDvA^2+StDvB^2)
I donβt know
The answer is -26. -26 x -2 = 52 52 - 17 = 35
To subtract 9 from 7, you would first need to understand that 7 is a smaller number than 9. In order to perform the subtraction, you would need to borrow from a higher place value. In this case, you would need to borrow 1 from the tens place, making it 6 tens and adding it to the ones place, making it 17. Then, you would subtract 9 from 17, resulting in 8. Therefore, 7 minus 9 equals -2.
2z+17=21 subtract 17 from both sides. 2z=4 divide both sides by 2 z=2