Taisha_Casseus
Convert 38degrees F to degrees celsius. If necessary, round your answer to the nearest tenth of a degree. Here are the formulas.
C=5/9(F-32)
F=9/5 C+32
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amistre64
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what is 38-32?
Taisha_Casseus
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6
liliy
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plug in the f which is 38 . intot he first equation:
amistre64
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good, and 6*5?
amistre64
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liliy has a typo
liliy
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ooopppss!
thanks
liliy
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5/9(38-32)
Taisha_Casseus
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30
amistre64
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good, and the last part is 30/9 = C; whats 30/9?
Taisha_Casseus
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3.3
amistre64
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ill trust you on that one
Taisha_Casseus
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lol so the answer is ? 3.3?
amistre64
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yep
Taisha_Casseus
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Omg! that was easy, Thank yu
amistre64
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yw :)
Taisha_Casseus
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Whats 17.7 rounded to the nearest tenth of a degree?
liliy
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.7 is the tenth
Taisha_Casseus
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so the answer is 18?
liliy
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no , u keep it the decimal . a TENTH is 1/10 of a number. so its the first place after the decimal...
Taisha_Casseus
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I don't get it...Please explain?
liliy
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the number 17.7 : the 1 is the tens place, 7 is hte ones place, .7 is the TENTHS place. so when it asks for the tenth place, it wants the number up until that place: which owuld be 17.7
Taisha_Casseus
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Okay Thank you.. But I just put that in and it says its wrong
liliy
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hmmmm.... does it want hte TENs or TENTHs place?
Taisha_Casseus
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the tenths place
liliy
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that is strange. where are you putting this into?
Taisha_Casseus
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a math program for my math class
liliy
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well the number after the decimal is the tenths place.
Taisha_Casseus
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yes, aren't you suppose to round up because the number is 7?
liliy
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but you round to that number.. wats the number after the 7?
Taisha_Casseus
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its alot of 7's after
liliy
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oh, well then yes, you round up. so your answer should be 17.8
Taisha_Casseus
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Nope its wrong...but thank yu anyway...
liliy
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oh. well thats awkward. lol sorry
Taisha_Casseus
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lOl it said the answer was 147.2
liliy
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thats not even possible. F is always a bigger number than C. if F is 38, C is gonna be really small....
Taisha_Casseus
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Thats wat Im saying, idk... but this is how it has the formula f=9/5c+32
=9/5(64)+32
=147.2
liliy
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where did it get 64 from????
Taisha_Casseus
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i had to convert 64 degrees C to degrees F
liliy
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oy vey.
Taisha_Casseus
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Idk ma...
Taisha_Casseus
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But (64)+32 = 96 so I dn't get it
liliy
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but u need to multiply by 9/5
Taisha_Casseus
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but that gives me 172.8
or did i do it wrong?
liliy
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u did it wrong.... it shoudl be 147.2
Taisha_Casseus
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you are right...my bad! I got it now i have to use a scientific calculator
Taisha_Casseus
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thank yu btw....
liliy
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np.