8/n=15/60
A.
a. 29
B.
32
C.
53
D.
480
18/1.5=x/4.5
A.
5.4
B.
8.1
C.
54
D.
81
30/x=10/24
A.
216
B.
720
C.
7.2
D.
72
2007-01-26 05:39:48 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1. Solve for "n" > 8/n = 15/60
First: eliminate fractions-multiply the denominators by everything...
(n)(60)(8/n) = (n)(60)(15/60)
Sec: cross cancel "like" terms...
(60)(8) = (n)(15)
480 = 15n
Third: isolate "n" on one side > divide both terms by "15"...
480/15 = 15n/15
480/15 = n
n = 480/15
n = 32
2. Solve for "x" > 18/1.5 = x/4.5
First: eliminate fractions-multiply the denominators by everything...
(1.50)(4.5)(18/1.50) = (1.50)(4.5)(x/4.5)
Sec: cross cancel "like" terms...
(4.5)(18) = (1.50)(x)
81 = 1.50x
Third: isolate "x" on one side > divide both terms by "1.50"...
81/1.50 = 1.50x/1.50
54 = x
x = 54
3. Solve for "x" > 30/x = 10/24
First: eliminate fractions-multiply the denominators by everything...
(x)(24)(30/x) = (x)(24)(10/24)
Sec: cross cancel "like" terms...
(24)(30) = (x)(10)
720 = 10x
Third: isolate "x" on one side > divide both terms by "10"..
720/10 = 10x/10
72 = x
x = 72
2007-01-26 06:04:05 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 1⤋
15n =8*60
n= 8*60/15 = 32
1.5x = 18*4.5
x= 18*4.5/1.5 = 54
10x = 30*24
x= 30*24/10 = 72
2007-01-26 13:53:22 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋
8/n=15/60
B. 32
18/1.5=x/4.5
x = (18 * 4.5) : 1.5
x = 54
C. 54
30/x=10/24
x = (30 * 24) : 10
x = 72
D. 72
2007-01-26 13:53:07 · answer #3 · answered by aeiou 7 · 0⤊ 0⤋
B 32
C 54
D72
2007-01-26 13:50:06 · answer #4 · answered by maidmaz 3 · 0⤊ 0⤋
How many real life problems are multiple choice ?
2007-01-26 13:49:58 · answer #5 · answered by Gene 7 · 0⤊ 0⤋
why would you need the anwsers if it is not homework but i think that it is b then c then d
2007-01-26 13:48:05 · answer #6 · answered by rob 2 · 0⤊ 0⤋
bcd
2007-01-26 13:44:08 · answer #7 · answered by Jim L 2 · 0⤊ 0⤋