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Mathematics 9 Online
OpenStudy (anonymous):

hello

OpenStudy (anonymous):

Which expression is true? A. 50 kilometers/hour > 139 centimeters/second B. 50 kilometers/hour < 139 centimeters/second C. 50 kilometers/hour = 139 centimeters/second D. cannot be determined

OpenStudy (skullpatrol):

Any ideas?

OpenStudy (solomonzelman):

Think!

OpenStudy (skullpatrol):

Telling someone to "think!" is not called teaching...

OpenStudy (anonymous):

Think for some conversion and on that line!

OpenStudy (solomonzelman):

@skullpatrol, sorry.

OpenStudy (anonymous):

lol @skullpatrol

OpenStudy (anonymous):

I still don't get it

OpenStudy (anonymous):

How many hours = how many seconds?? first convertt into minutes

OpenStudy (skullpatrol):

Your objective is to compare 50 kilometers/hour with 139 centimeters/second and choose one of the statements <, =, or >

OpenStudy (skullpatrol):

To compare speeds they must be in the same units, right?

OpenStudy (anonymous):

thanks

OpenStudy (skullpatrol):

$$\huge 50 \frac{kilometers}{hour}$$ $$\huge 139 \frac{centimeters}{second}$$

OpenStudy (skullpatrol):

1 hour = 3600 seconds, kilo = 10^3, centi = 10^-2

OpenStudy (skullpatrol):

$$\huge 50 \frac{10^3meters}{3600 seconds}$$ $$\huge 139 \frac{10^{-2}meters}{second}$$

OpenStudy (anonymous):

^ are u getting it @keketooskiny or u just want the answer

OpenStudy (anonymous):

im getting it

OpenStudy (anonymous):

cool!

OpenStudy (skullpatrol):

$$\huge \frac{50*10^3}{3600} \frac{meters}{second}$$ $$\huge 139*10^{-2} \frac{meters}{second}$$

OpenStudy (skullpatrol):

Your objective is to compare 50 kilometers/hour with 139 centimeters/second and choose one of the statements <, =, or > To compare speeds they must be in the same units, right?

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