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

I'm not clairvoyant, and need more information...

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

According to the "*HP 32SII RPN Scientific Calculator Owner's Manual*" (at the link below), you just need to treat degrees, minutes, and seconds conversions as hours, minutes, and seconds. Use the left-shift and right-shift keys together with the 5 key to convert to decimal-fraction form (D.d format) and to minutes-seconds form (DD.MMSSss), respectively.

http://www.hp.com/ctg/Manual/bpia5305.pdf

See pages 4-9 and 4-10.

http://www.hp.com/ctg/Manual/bpia5305.pdf

See pages 4-9 and 4-10.

Apr 09, 2014 | HP 32sII Calculator

Use the DMS key marked degree, apostrophe, double quotation mark.

Lets us call it [DMS]

To enter an angle in degree minutes seconds or hour, minutes, seconds, type in the number of degrees, press the [DMS] key, enter the number of seconds, press the [DMS] key, enter the number of seconds then the [DMS] key. Press = the calculator displays the value in DMS units. If you press the DMS key again the number displayed is converted to decimal degrees.

Example:enter 12 degrees, 15 minutes, and 25 seconds

12 [DMS]15[DMS]25[DMS] =

Calculator displays 12 deg 15'25"

Press the DMS key again and you see 12.2569444

Lets us call it [DMS]

To enter an angle in degree minutes seconds or hour, minutes, seconds, type in the number of degrees, press the [DMS] key, enter the number of seconds, press the [DMS] key, enter the number of seconds then the [DMS] key. Press = the calculator displays the value in DMS units. If you press the DMS key again the number displayed is converted to decimal degrees.

Example:enter 12 degrees, 15 minutes, and 25 seconds

12 [DMS]15[DMS]25[DMS] =

Calculator displays 12 deg 15'25"

Press the DMS key again and you see 12.2569444

Feb 19, 2013 | Casio FX-82MS Scientific Calculator

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

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.

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 | Calculators

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).

Feb 08, 2011 | Texas Instruments TI-83 Plus Calculator

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).

Example: sine of 12 degrees 15 minutes:

sin 12 *** 15 *** =

where *** is the DMS key.

Example: sine of 12 degrees 15 minutes:

sin 12 *** 15 *** =

where *** is the DMS key.

Sep 25, 2010 | Casio FX-115ES Scientific Calculator

Hello,

To convert an angle from degrees (decimal degrees) to the sexagesimal notation (deg, min, seconds) use the key [DMS] the one between [(-) and [hyp].

Everytime you press the key, the displayed result is cast in the other form

EX; 12.58 [DMS] gives 12 deg 34 min 48 sec.

Suggestion: If you are doing many calculations with the sexagesimal format, use the decimal degree format, and only when you find the final result do you convert it to DMS.

Hope it helps.

To convert an angle from degrees (decimal degrees) to the sexagesimal notation (deg, min, seconds) use the key [DMS] the one between [(-) and [hyp].

Everytime you press the key, the displayed result is cast in the other form

EX; 12.58 [DMS] gives 12 deg 34 min 48 sec.

Suggestion: If you are doing many calculations with the sexagesimal format, use the decimal degree format, and only when you find the final result do you convert it to DMS.

Hope it helps.

Sep 30, 2009 | Casio FX-115ES Scientific Calculator

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.

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

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

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.

Jul 05, 2009 | Casio FX-115ES Scientific Calculator

yo whatz good playa.. just click Shift, mode, then click 2.

Oct 01, 2008 | Casio FX-115ES Scientific Calculator

Press "MODE"

then scroll down to "Exact/Approx"

select "approximate"

this will have your answers in decimal as default

then scroll down to "Exact/Approx"

select "approximate"

this will have your answers in decimal as default

Oct 16, 2007 | Texas Instruments TI-89 Calculator

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