Question about Texas Instruments TI-89 Calculator

I need to find out how to add and subtract feet and inches......

ie..5'6"-2'8"

You can use the units menu (2nd > 3) to place a unit after some number you want to qualify as being an unit, or you can just type them in like 5_ft + 6_in. Note that you need to add on each part if you are doing mixed measurements; there is no _ft_in combination. So just add each manually - in your case you would do (5_ft + 6_in) - (2_ft + 8_in)

Posted on Oct 04, 2009

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Posted on Jan 02, 2017

If the belt is in one piece, put a chalk mark on the back of the belt and measure the length by running a tape measure from one side of the mark all the way around the belt until the mark appears. Take that measurement, subtract an inch for stretch and that number is the number of the belt you need. If it's broken in two, not three, then simply measure the length of the belt.

May 28, 2016 | Garden

It probably uses adding machine logic. Try the following example.

3+

4-

5+

*

You should get 3, -1, and 4 on the screen, the running total. The tape should show the +3, -4, +5, and finally 4, the numbers that you entered and the total. Think of each entry as adding/subtracting integers on a number line rather than 3+4-5;)

Let me know if you have any questions.

Paul

3+

4-

5+

*

You should get 3, -1, and 4 on the screen, the running total. The tape should show the +3, -4, +5, and finally 4, the numbers that you entered and the total. Think of each entry as adding/subtracting integers on a number line rather than 3+4-5;)

Let me know if you have any questions.

Paul

Feb 04, 2016 | Office Equipment & Supplies

Calculate the number of feet. You will get a whole number and most likely a decimal. Subtract the whole number and multiply the remaining decimal by 12.

Example: 3.873459. From this we subtract the whole number 3, leaving us with 0.873459. We multiply this by 12, as there are 12 inches in a foot. I get 10.481508". So the net result is 3' 10.481508".

Good luck.

Paul

Example: 3.873459. From this we subtract the whole number 3, leaving us with 0.873459. We multiply this by 12, as there are 12 inches in a foot. I get 10.481508". So the net result is 3' 10.481508".

Good luck.

Paul

Apr 13, 2015 | Office Equipment & Supplies

The best way to get the correct length belt is to use a piece of string, wrap it around the pulleys. Then measure the string, subtract about an inch to an inch and a quarter. Take that measurement to your parts supply store. By subtracting that sum it will give you good belt tension.

Dec 30, 2014 | Kenmore Elite HE4 Electric Dryer

SUM means adding not subtracting. so if you were wanting to add the total (the sum) of the amounts of the hundreds and the tens would be 170 plus 130 which would be 300 but the remainder from subtracting 130 from 170 would be 40. That would leave the single units 5 minus 4 of which the remainder is 1. So, the remainder from subtracting 134 from 175 is the reminder of subtracting the one hundred from the one hundred which is zero added to the remainder of subtracting the tens (70 minus 30) which is the remainder of 40 plus the remainder of subtracting the units of 5 minus 4 which is 1. So you need to add the 0 and the 40 and 1 which is the remaining sum of 41.

Sep 19, 2014 | Office Equipment & Supplies

If your calculator is more of an adding machine it works a little bit differently than a calculator. For an example: 10 + 5 - 2 on your machine do the addition of 10 + 5, then to subtract the 2 press 2 then the minus sign to get the total of 13. I hope this is helpful.

Feb 06, 2011 | Canon Office Equipment & Supplies

When you want to complete a problem on an adding machine, such as "7 - 3," you would not key in "7," then the subtraction sign, then "3" and then an equal sign. If you do, then you will get an answer of "-4," and you know that is not the correct answer. Again, you have to think like an accountant when you are working with your adding machine. To figure this subtraction problem on an adding machine, you would need to key in "7," the addition sign, "3" and then the subtraction sign; you would get the answer of 4. You are actually working the problem as "7 + (-3)." This would be true on most modern day machines. In order to subtract, you have to add the negative number.

Sep 25, 2009 | Victor 1208-2 Calculator

20.9 cubic feet for model # RT21AKXKQ

14 cubic feet for model number RT14BKXKQ05

14 cubic feet for model number RT14BKXKQ05

Jun 07, 2009 | Roper RT21AKXKQ Top Freezer Refrigerator

Hello desireejane,

One method is to do the following

public static long octalToDecimal(String octal) throws NumberFormatException {

// Initialize result to 0

long res = 0;

// Do not continue on an empty string

if (octal.isEmpty()) {

throw new NumberFormatException("Empty string is not an octal number");

}

// Consider each digit in the string

for (int i = 0; i < octal.length(); i++) {

// Get the nth char from the right (first = 0)

char n = octal.charAt(octal.length() - (i+1));

int f = (int) n - 48;

// Check if it's a valid bit

if (f < 0 || f > 7) {

// And if not, die horribly

throw new NumberFormatException("Not an octal number");

} else {

// Only add the value if it's a 1

res += f*Math.round(Math.pow(2.0, (3*i)));

}

}

return res;

}

One method is to do the following

- Convert the octal, hexadecimal or binary to decimal.
- Add or Subtract the decimal normally
- Convert the result back to octal, hexadecimal or binary.

**Convert the octal to decimal:**

public static long octalToDecimal(String octal) throws NumberFormatException {

// Initialize result to 0

long res = 0;

// Do not continue on an empty string

if (octal.isEmpty()) {

throw new NumberFormatException("Empty string is not an octal number");

}

// Consider each digit in the string

for (int i = 0; i < octal.length(); i++) {

// Get the nth char from the right (first = 0)

char n = octal.charAt(octal.length() - (i+1));

int f = (int) n - 48;

// Check if it's a valid bit

if (f < 0 || f > 7) {

// And if not, die horribly

throw new NumberFormatException("Not an octal number");

} else {

// Only add the value if it's a 1

res += f*Math.round(Math.pow(2.0, (3*i)));

}

}

return res;

}

Mar 24, 2009 | Sun Java Programming Language (cdj-275)

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