Posted by micah on Sunday, March 11, 2012 at 8:26pm.
1). Sum of three numbers is 45. One number is five more than the second number.It is also twice the third.Find the numbers.
2).Perimeter of quadrilateral is 52in. Longest side is is three times as long as the shortest side. The other two sides are equally long and are 5 in. longer than the shortest side. Find length of all four sides.

college math  Damon, Sunday, March 11, 2012 at 8:46pm
m + n + x = 45
x = n + 5 so n = (x5)
x = 2 m so m = x/2
x/2 + x5 + x = 45
2.5 x = 50
25 x = 500
x = 20
n = x5 = 15
m = x/2 = 10

college math  Damon, Sunday, March 11, 2012 at 8:49pm
L = 3 s
a = b = s+5
perimeter = L + s + a + b = 52
3 s + s + s + 5 + s + 5 = 52
6 s + 10 = 52
6 s = 42
s = 7 etc
Answer This Question
Related Questions
 algebra  Five times the smallest of three consecutive odd integers is ten more ...
 Grade 8 Math  Can you write them in Mathematical/numbers form I'll solve them ...
 algebra  Twice the first number is eleven more than the sum of the other two ...
 algebra  the sum of three numbers is 60. One number is ten more than a second ...
 algebra  Three numbers are such that the first number is 10 less than twice the...
 Algebra I  The sum of three numbers is 147. The second number is 4 more than ...
 math  The greater of two numbers is 1 more than twice the smaller. Three times ...
 algebra & trigonometry  The sum of three whole numbers is 7. The second number...
 algebra & trigonometry  The sum of three whole numbers is 7. The second number...
 Math  The sum of three numbers is 301. The second number is 3 less than twelve ...
More Related Questions