x/25 = 32/10, x =
80
76
84
72
15: x/100 = 63/75, x =
76
80
84
88
16: 24/x = 16/85
125
127.5
129
132.5
If a number is decreased by 3.75, the result is 1.95. What is the number?
5.95
5.4
5.7
5.85
20: Five times a certain number decreased by 12 equals 73. What is the number?
13
15.5
17
19 2/3
2007-05-23 02:15:24 · 6 answers · asked by heather N 1 in Science & Mathematics ➔ Mathematics
1=
x/25=32/10
x=32/10x25
x=80
2=
x/100=63/75
x=63/75x100
x=84
3=
24/x=16/85
x=24x85/[16]
x=255/2
4=let d no b x
decreased
x-3.75=1.95
x=3.75+1.95
x=5.7
5=5x-12=73
5x=73+12
x=85/5
x=17
2007-05-23 02:21:24 · answer #1 · answered by xprof 3 · 0⤊ 0⤋
x/25 = 32/10, x =80
80correct
76
84
72
15: x/100 = 63/75, x =
76
80
84correct
88
16: 24/x = 16/85
125
127.5 correct
129
132.5
If a number is decreased by 3.75, the result is 1.95. What is the number?
5.95
5.4
5.7 correct
5.85
20: Five times a certain number decreased by 12 equals 73. What is the number?
13
15.5
17 correct
19 2/3
2007-05-23 09:25:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
14)
X = 32 x 25 / 10 = 16 x 5 = 80
15)
X = 6300/75 = 2100/25 = 420/5 = 84
16)
X = 24x85/16 = 3x85/2 = 255/2 = 127.5
X - 3.75 = 1.95
X = 1.95 + 3.75 = 5.70
20)
5X - 12 = 73
5X = 73 + 12
X = (73 + 12)/5 = 85/5 = 13
2007-05-23 09:23:22 · answer #3 · answered by Orinoco 7 · 0⤊ 0⤋
1) 80
2) 84
3) 127.5
4) 5.7
5)17
2007-05-23 09:26:33 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1. 80
2. 84
3. 127.5
4. 5.7
5. 17
2007-05-23 09:25:21 · answer #5 · answered by SST 6 · 0⤊ 0⤋
http://mathforum.org/dr.math/
2007-05-23 09:23:04 · answer #6 · answered by CWiltraut 1 · 0⤊ 0⤋