1. The distance from Philadelphia to Sea Isle City is 100 mi. A car was driven thisdistance using tires with a radius of 14 in. How many revolutions of each tire occurred on the trip?
2. What is the decimal equivalents of thismixed number: 7 3/4
3. Write the following as a common fraction or mixed number in
lowest terms. 15.35
4. is 5/16 less than or greater than 0.313
5. Change percentages into fractions
1. 0.667
2. 0.624
3. 0.606
4. 0.672
5. 0.676
2006-10-18 10:30:11 · 4 answers · asked by **LIBERTY** 1 in Education & Reference ➔ Homework Help
1. First you need to convert the distance into inches
1 mi=1760*3*12 in
so, 100mi = 100*1760*3*12 in = 6336000 in
when each tyre rotates once the car moves to the distance of a tyre's circumference (perimetre). The circumference of a tyre can be calculated from its radius using the formula:
c = 2πr
Where r is the radius of the circle, and π (the Greek letter pi) is the constant 3.141 592
so, c=2*3.141592*14 in = 87.964576 in
now you know that, 87.964576 inchs of distance covered in 1 revolution
so, it took 6336000/87.964576 revolutions in the trip
= 72028.994944 revolutions
2. First you need to convert the mixed number into fraction, using formula: x y/z = (x*y+z)/z
so it will be 7 3/4 = (7*4+3)/4 = (28+3)/4 = 31/4
now divide 31 by 4, you will get 7.75
3. To convert decimel number into fraction or mixed number, ignore the decimel in the number and assume it as a whole number and divide it by 1 for the decimel and a 0 for each digit after decimel
To get the fraction:
15.35 = 1535/100
To get the mixed number:
100|1535|15
|1500|
-------
35
= 15 35/100
3.& 5. Now you can convert dicimels or percentages into fractions or mixed numbers and vice versa.
2006-10-18 12:05:45 · answer #1 · answered by orebabaa 4 · 1⤊ 0⤋
5. 1. 2/3
2006-10-18 10:41:27 · answer #2 · answered by jdogft 1 · 0⤊ 0⤋
1. About 452572.
2. 7.75
3. 15 7/20
4. greater than
5.
667/1000
624/1000= 312/500
606/1000= 303/500
672/1000= 336/500= 168/250
676/1000= 338/500= 169/250
2006-10-18 10:37:19 · answer #3 · answered by Amy 3 · 0⤊ 0⤋
1. ???
2. 7.75
3.15 & 7/20 or 307/20
4. It is less than unless you round because it is .3125
5.
1. 2/3
2. 78/125
3. 303/500
4.84/125
5.169/250
I would suggest figuring out how to do it yourself because the teacher will ask you how.
2006-10-18 10:43:01 · answer #4 · answered by The One Truth 4 · 0⤊ 0⤋