Homework Help: ALEGBRA II

Posted by TRACI on Sunday, August 28, 2011 at 9:30pm.

the perimeter of a triangle is 51 centimeters, the longest side is 1 centimeter less than the sum of the other two sides. twice the shortest is 11 centimeters less than the longest side. find the lengths of each side of the triangle.

ALEGBRA II - bobpursley, Sunday, August 28, 2011 at 9:45pm
L=S1+S2-1
2*S1+11=L
L+S1+S2=51

rearranging these
S1+S2-L=1
2S1 -L=-11
S2+S2+L=51

add the two last equations
2S1+S2=40
subtract the first from the second
S1-S2=-12
add these two equations
3S1=28
S1=7

can you take if from here?
ALEGBRA II ( inaccuracy - Mgraph, Sunday, August 28, 2011 at 10:09pm
... add the two last eq.
3S1+S2=28
...
4S1=28
ALEGBRA II - bobpursley, Sunday, August 28, 2011 at 10:13pm
Thanks. I typoed and did not catch it.

Answer this Question

Related Questions

math - the perimeter of a triangle is 54 centimeters. the longest side is 6 ...
Algebra - The perimeter of a triangle is 52 centimeters. The longest is 2 ...
ALGEBRA - The perimeter of a triangle is 52 centimeters. The longest is 2 ...
Intermediate Algebra - The perimeter of a triangle is 48 centimeters. The ...
algebra 2 - the perimeter of a triangle is 49 centimeters. find the lenghts of ...
Algebra II - Two sides of a triangle are equal in length. The length of the ...
algebra - One side of a triangle is half the longest side. The third side is 9 ...
scc - One side of a triangle is half the longest side. The third side is 10 ...
geometry - The perimeter of a triangle is equal to 12 inches. The length of the ...
Algebra - The backyard of a house is in the shape of a triangle. The longest ...

For Further Reading

First Name:
School Subject:
Answer: