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Intro 4&5 homework help

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sorry hey this is homework help for intro for and intro 5 so intro for starts on page when number 6 night and then page 28 number 89 and then intro 5 is page 26 number 67 and then there's also should be print up notes your scientific notation on the website that you might want to print out the notes to make your life easier tomorrow so I'm going to start first thing you need to do is copy down the problem I don't need to do that cuz I passed this course already so you need to have to study tools so First Take second maybe pause the video and copy down problem number 6 year convert 5021 centimeters to kilometers so here's how we remember the stuff we want to convert 5021 centimeters to kilometers so 5021 cm do it this one there's a couple of ways I could do it I can go to my base unit of meters using my multipliers and then go from my base unit to my new unit kilometers multipliers or I could do the unit converter kind of show you both with this first one so I'm going to show you using multipliers first of all if I want to get rid of 18 meter I would have to go to my years of probably a pink sheet this is one for the test the blues and I go to centi and I'll use just the today since we haven't learned scientific notation yet I'm going to use the decimal multiplier 5021 cm is equal to 5021 * .01 meters now if I multiply that it's going to move the decimal place to places when I do this so I'm going to have is going to be lower 50.2 one so you could do that on a calculator that's the best way to do it so you don't make mistakes do it on a calculator so this would wind up being 50.21 meters all I want to take that 50.21 meters and I want it I wanted to get it to say kilometers so I need to get kilo in where in order to take kilo in that put kilo in there I need to take out the decimal of kilo so this is a little different than multiplying to do this to go from base unit to the other one you're going to be dividing so in this case to get kilo in there I'm going to take  50.21 I'm going add kilo in their meter but in order to add kilo in there on the top I have to divide out what that's equal to in decimal form so this is a little weird applying to go from your prefix to your base and then dividing to go from your base to your to one with the prefix so that's kilo that's a thousand so I'm going to divided by 1000 to get the word kilo in now if we look still have 5021 meters what we started with and then we have kilo over a thousand hey kilo means a thousand thousand over $1,000 one so this is really the same so if we do this to get kilo in there were going to divided by 1000 so take 50.21 divided by 1000 and then your answers in kilometers so that's using the multipliers now another way to do it in this is probably the way I would do it is to take 50.2 on centimeters right over fun and do it with multipliers I like unit multipliers so step one is right it over one step 2 as a Time sign step raise the fraction line that 4 centimeters on the bottom so I cancelled I would write the thing I want to get up top kilometers I need a now I need something to go straight from centimeters to kilometers I don't have that information so when I don't want to try and figure it out so is there something else I know that's easy yeah I will erase kilometers here and put meters do I know how many centimeters are in a meter absolutely that's one that should be memorized you should know it's 100 cm one meter is it  yeah even though you should know it there it is once in one meter is 100 centimeters just in case 1 m is 1000 mm in one kilometer is 1000 m is the other one that were going to use salted  send out centimeters of cancelled if I ended right now I'd have Chris I don't want meters I want kilometers the question said kilometers so now what I do is I put another time sign another fraction line This Time meters is on the bottom to get rid of that I want to go to kilometers or kilometers and that's a tough one km is 1000 m so then meters cancel left we kilometers is our answer that's good that's what we wanted so we multiply across the top that's going to be 5021 X bottom that's going to be a 2152 1/100000 that'll be your answer in kilometers you should get the same as if did it that way so that's how you're going to do number 6  number to finish that up number eight  write down the problem maybe pause the video right here and right convert to speed 5.30 meters per second to kilometers so this is backwards of what we did in class in the notes so in this case all we're going to do is take what we want to convert so you've written out the problem real quick once so we're sake 5.30 now meters per second should be written up top all up top don't take the second and put it on the bottom and never have a unit down here on the bottom remember a little idiosyncrasy of mr. Ben he likes to have things look like fractions when he multiplies them second step birds that fraction line again  4 step meter per second on the bottom and then the fifth step would be what do I want to get put that up top let's see if we can do it we want to go from meters second to kilometers per hour  so in there now I look at my blue sheer your pink sheet it's on a test it's blue sheet and I do have one skills from meters per second to kilometers per hour so I can do this in one conversion factor 1 meter per second is 3.60 KM 1 m per second .6 notice I'm not doing the numbers until last so do it step-by-step don't try to throw the numbers in there and then the units in realize I can't do this or something you can have problems meters per second cancel I think you can finish that one up at this point so now we're going to go to page 28 number 89 hair we are all this is meet one year Clara decode and have discovered the following conversion factors so these are things that maybe these conversion factors these are the things that you would see on your booshie can your pink sheet depending if it's test or your home so 1.31 long equals 2.23 mediums and 74.5 medium equals 640 shorts how many shorts are you cool to one long this is a classic unit converter don't worry about what Longs and shorts and mediums are do the other so here I'm going to do number 89 so make sure you copy the problem down  so might want to pause right here go ahead and copy this problem down another get started we're going to start with what we want to convert 1 long we wanted to convert 1 Too Short's so I'm going to start with one long over one just to make it look like fraction back in the matter what it is Step 2 * sine step 3 fraction line set for right long on the bottom we want to get rid of that and write what we want to get we small  unfortunately we don't have a conversion factor here that goes directly from longs to Smalls or shorts accuse me short  Matt Mistake by the teacher  I'm going to race it anyways because I can't go from monster shorts candy for mediums so and I'm told that let's see 1.23 long is equal to 23 medium 1.23 ounce is equal to 23 medians so now I know how many mediums are in one long want that though I need shorts or no  short shorts so I'm going to make another conversion factor times 9 fraction line BM on the bottom shorts up top  and we're told that 74.5 mediums equals 645 short 600 45 shorts is 74.5 medium medium add those two answers and that would be your answer in shorts  for how many shorts are in one long move on to the last problem we're going to do and that's a page 26 number 67 so you see each of these  67 you're taking a metric prefix centi Pico do I have to look up in a table someplace kilo Milli micro and Nano and you're going to use  either this list  of finding e to the power of 10 of the decimal equivalent to the prefix whatever it is sin Tipico or whatever put that in then it'll be in meters or if you want to so I think with number 67 right here I've already gone over kind of how to do that I'll do a again so 67 here to make sure you write down the problem it says convert each of the following measurements to me and then you would write a and we start with 42.3 CM / 1 and remember we're trying to get to our base turn it from centimeters to meters so I'm going to do it I like I like unit converters I really like these I don't know why they're so easy once you get used to him centimeters meters and I know there's 100 cm in 1 M centimeters cancel and I can now just take 42.3 divided by 1 some help doing these don't forget to do all the rest in 67 B C D E and F and good luck with those and print up some see if you can to make your time a little easier in class I'll take a note

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