Which of the following is not true?

A. 15 kilograms = 33.069 pounds
B. 3 inches^3 = 49.161 centimeters^3
C. 30 kilometers = 18.642 miles
D. 40 yards^2 = 63.576 meters^2

Question

Which of the following is not true?

A. 15 kilograms = 33.069 pounds
B. 3 inches^3 = 49.161 centimeters^3
C. 30 kilometers = 18.642 miles
D. 40 yards^2 = 63.576 meters^2

anonymous · Answer

1 kilogram = 2.20462262 pounds

anonymous · Answer

1 inches = 2.54 centimeters

gabylovesyou · Answer

A is true

anonymous · Answer

1 kilometer = 0.621371192 miles

anonymous · Answer

1 yds = 0.9144 meters

anonymous · Answer

have you studied dimensional analysis

gabylovesyou · Answer

mmm no ;s

anonymous · Answer

$$3(inch)(inch)(inch)*\frac{2.54cm}{1inch}*]\frac{2.54cm}{1inch}*\frac{2.54cm}{1inch}$$

anonymous · Answer

it's a technique used in science to get through different measurements... what you do is start out with the given and then use your measurement equalities as ratios

anonymous · Answer

you know from math thta when you have x/x , they cancel to get one. Dimensional analysis uses this same aspect but with the measurements like above

anonymous · Answer

now how would you check d using dimensional analysis

april115 · Answer

i still dont get it

anonymous · Answer

what do you mean? this is not your question?!

gabylovesyou · Answer

lmaoooo

anonymous · Answer

anyways, do you understand gaby?

start out with the given or one side of your equality

gabylovesyou · Answer

ok ill try :D

anonymous · Answer

you can use the equation editor if you'd like or when you get stuck i can help

gabylovesyou · Answer

ok thnks : D

april115 · Answer

first of all i dont care if its not my ques. i was goin to help gabby. so when i saw the work that u did thats when i replied ''i dont get it''. understand?

gabylovesyou · Answer

can u do the second one so i see and ill try the one after?

anonymous · Answer

i'll start you off

given:$$40yds^2$$

gabylovesyou · Answer

ok

anonymous · Answer

your unknown is : ? meters squared

gabylovesyou · Answer

right

anonymous · Answer

alright so how can you write the conversion as a ratio

1yd=.9144 meters

gabylovesyou · Answer

....................

anonymous · Answer

a ratio such as yds/meters or meters/yds

mertsj · Answer

$$40 yds^2\times\frac{.9144 m}{1 yd}\times\frac{.9144 m}{1yd}=33.44 m^2$$

gabylovesyou · Answer

so its D ! because its false!

anonymous · Answer

yes the ratios are  the middle part of merts answer

gabylovesyou · Answer

ohh ok! Thank you soo much!~!

anonymous · Answer

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