Question about Texas Instruments TI-89 Calculator

I need this in decimal form

If it takes her 12 minutes to drive one way, how many hours a week does Marla spend driving?

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How many days a week does Marla get in the car and mash the gas?

x (in hours) = numminsdrivingperday/60 * numdays

x = (12*2)/60 * numdays

x = 2/5hrs * numdays

x = .4 * numdays

Of course, there MUST be more to it than this, right?

Posted on Mar 12, 2009

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How can i convert degrees,minutes and seconds to decimal degrees in a casio fx-82MS

Use the DMS key marked degree, apostrophe, double quotation mark.
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Marla drives her car to school each day. If it takes her 12 minutes to drive one way, how many hours a week does Marla spend driving? (Express the answer in decimal form.)

Marla drives her car to school each day. If it takes her 12 minutes to drive one way, how many hours a week does Marla spend driving? (Express the answer in decimal form.)

Nov 26, 2012 | Texas Instruments TI-89 Calculator

2.45.35 hours - 0.23. 12 hours = ?. a short quick method please

Seconds: Subtract 12 from 35 to get 23.
Minutes: Subtract 23 from 45 to get 22
Hours: Subtract 0 from 2 to get 2.

Put the three together to get 2.22.23

This one was easy because there was no need for carry. If you do have to carry, just make sure you carry 60. Otherwise, it's exactly the same as when you learned subtraction in second grade.

Some calculators have conversions between decimal degrees/hours and degrees/hours:minutes:seconds. If you have such a calculator, you can convert both numbers to decimal, subtract, and convert back. Since you didn't specify what calculator you have, I can't tell whether this is an option for you.

Jun 18, 2011 | Office Equipment & Supplies

How do i use dms button

Put an angle in decimal form, like 2.25 before the >DMS command. Press enter; it will tell you 2 degrees, 15' because 15 minutes is one-fourth (.25) of a degree (like 15 minutes are one-fourth of an hour).

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How do i convert a degrees/minutes/second problem using the Casio Fx-115ES calculator? Can you provide an example? Thanks ZH

Use the key above the ENG key to enter a value in DMS form, ending each portion with the key. To convert it to decimal, press SD once (or twice if you get a fraction the first time).

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Hello,

Sorry to disappoint you but you cannot do it due to the fact that the representation of irrational (SQRT(2), ..) and transcendental (e, pi, etc.) numbers on a calculator or even a computer is approximative : a number like sqrt(2) has an infinite number of decimal digits while the number of internal digits a calculator uses to store results is limited (10, 12, 15 or even 24).
Once an irrational or a transcendental number has been evaluated numerically it generally ceases to be exact.

If you want to manipulate algebraic expressions, you need a calculator that has a CAS (computer algebra system) operating system and a symbolic algebra option.

Some exemples of calculators with a CAS are The TI nspire CAS, the HP 48 series, HP 49, HP 50, Casio ClassPad3xx, the TI 89titatium, the TI Voyager 200PLT, the TI 92 and Ti 92Plus. The ones with a fullblown keyboard might not be accepted on certain standardized test.

You may also try to get some emulators on the Internet for the HPs or the TI 8xx and play with them on the computer.

Hope that helps.

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I want the answer to be in decimal form.

Press "MODE"
then scroll down to "Exact/Approx"
select "approximate"

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