the number is odd.the number has two digits.the sum of the digits is nine.the product of the digits is twenty.the ten'sdigit is one less than the units digit.
2006-10-23 10:44:39 · 9 answers · asked by masterda29456 1 in Education & Reference ➔ Homework Help
x+y=9
xy=20
y-x=1
2y=10 y=5
x=4
so the number is 45
2006-10-23 10:52:39 · answer #1 · answered by raj 7 · 1⤊ 0⤋
45
2006-10-23 18:06:18 · answer #2 · answered by bReN bReN 2 · 0⤊ 0⤋
45
2006-10-23 17:48:16 · answer #3 · answered by Up_In_Smoke 2 · 1⤊ 0⤋
Only 45 works for all criteria. Candidates are 12,23,34,45,56,67,78,89 where the tens digit is one less than the units digit. Only 4,5 sums to nine and multiplies 20 20.
2006-10-23 17:50:40 · answer #4 · answered by cpaulw 2 · 0⤊ 0⤋
the number is 45
2006-10-23 18:05:26 · answer #5 · answered by bittykittietwinklepie 3 · 0⤊ 0⤋
42
2006-10-23 17:47:13 · answer #6 · answered by what 2 · 0⤊ 1⤋
If the number has two digits, then it can't be any number, because sum is going up, not down.
2006-10-23 17:48:53 · answer #7 · answered by Ay-me 2 · 0⤊ 1⤋
i guess the ans iz 45
2006-10-23 17:59:38 · answer #8 · answered by Silver 2 · 0⤊ 0⤋
confusing
2006-10-23 17:49:47 · answer #9 · answered by superchic[k] 2 · 0⤊ 1⤋