I have some ratio homework i dont understand .. if anyone could help that'd be great- i have to convert a bunch of measurements & i dont know what i am doing!!!!
12. 18 cm: 1.8 cm
16. 200 cm: 8 km
18. 13 oz. : 2 lb.
20. 2 kg.: 90 g.
22. The student-teacher ratio in a school with 2592 students and 144 teachers.
2007-02-08 10:22:59 · 6 answers · asked by missjamo2 3 in Education & Reference ➔ Homework Help
12. 10:1
16. 200cm:800000 =1:4000
18. dunno lbs im metric system
20.2000:90 = 200:9
22.2592:144 = 18:1
2007-02-08 10:30:27 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Ratio
A ratio is a comparison of two numbers. We generally separate the two numbers in the ratio with a colon (:). Suppose we want to write the ratio of 8 and 12.
We can write this as 8:12 or as a fraction 8/12, and we say the ratio is eight to twelve.
Examples:
Jeannine has a bag with 3 videocassettes, 4 marbles, 7 books, and 1 orange.
1) What is the ratio of books to marbles?
Expressed as a fraction, with the numerator equal to the first quantity and the denominator equal to the second, the answer would be 7/4.
Two other ways of writing the ratio are 7 to 4, and 7:4.
2) What is the ratio of videocassettes to the total number of items in the bag?
There are 3 videocassettes, and 3 + 4 + 7 + 1 = 15 items total.
The answer can be expressed as 3/15, 3 to 15, or 3:15.
So let us look at a few of your problems so you can get the idea.
12. 18cm: 1.8 cm would be the same as 18/1.8 or 180/18 or 10
16. You need to convert km to cm first
18. You need to convert lb ot oz first
20. You need to convert kg to g first
22. 2592 students: 144 teachers would be the same as 2592/144
Then you need to do the math until you find out how many students there are to one (1) teacher.
Good Luck!
2007-02-08 18:33:07 · answer #2 · answered by landhermit 4 · 0⤊ 0⤋
12) 18/1.8 = 10:1
16) 1km = 1000m = 1000 * 100 cm
200:800000 = 2:8000 = 1:4000
18) there are 16 ounces in a pound [ i think, im metric]
so 13oz:2*16 oz = 13:32
20) 1kg = 1000g
2*1000g:90g = 2000:90=200:9
22) 2592:144
div by 4 gives
648:36
div by 36 gives
18:1 or a ratio of 18 students per teacer
2007-02-08 18:34:07 · answer #3 · answered by the truth 4 · 0⤊ 0⤋
22 = 1 to 18
2007-02-08 18:31:34 · answer #4 · answered by Dennis G 5 · 0⤊ 1⤋
18cm/1.8cm = 10
200cm/8km = 2m/8000m = 1/4000
13oz/2lb = 13oz/24oz =13/24
2kg/90g = 2000g/90g = 200/9
2592/144 = 2592/144
2007-02-08 18:30:06 · answer #5 · answered by Traveler 3 · 0⤊ 1⤋
Yahoo has a place on the kids section under Math where you can actually write the questions in and they will help..... (good luck)
2007-02-08 18:30:08 · answer #6 · answered by Anonymous · 0⤊ 1⤋