math
posted by Leigh .
the legs of an isosceles triangle have lengths x+1 and x+7. the base has length 3x3. what is the length of the base?
a. 6
b. cannot be determined
c. 4
d. 3

math 
Steve
we know that
x+1 = x+7
x=3
so the base is 6
Respond to this Question
Similar Questions

geometry
The perimeter of an isosceles triangle is 37 in. The lengths of the two equal legs are 6 in. less than 3 times the length of the base. Find the lengths of the three sides. 37=2L+2W W=3W6 do i have this equation wrote right when i … 
algebra
The base of an isosceles triangle and one of its legs have lengths that have consecutive integers. The leg is longer than the base. The perimeter of the triangle is 20. Find the length of each side of the triangle. *Please help me … 
geometry
The legs of an isosceles triangle have lengths 2x+4 and x+8 . The base has length 5x2 . What is the length of the base? 
algebra
The length of the base of an isosceles triangle is one fourth the length of one of its legs. If the perimeter of the triangle is 16 inches, what is the length of the base? 
Geometry
the legs of an isosceles triangle have lengths 2x+4 and x8 the base has length 5x2 whats the lenght of base 
Trig
The length of the base of an isosceles triangle is one fourth the length of one of its legs. If the perimeter of the triangle is 16 inches, what is the length of the base? 
Math
Two isosceles triangles have perimeters of 8 and 15 centimeters, respectively. They have the same base length, but the legs (the non base sides) of the larger triangle are twice as long as the legs of the smaller triangle. For each … 
math
The base of an isosceles triangle is four less than the sum of the lengths of the legs. If the perimeter of the triangle is 44, find the length of the three sides of the triangle.[ Only an algebraic solution will be accepted ] 
algebra 1
The length of the base of a isosceles triangle is one forth the length of one of its legs. If the premimeter of the triangle is 16 inches, what is the length of the base. 
Math
In a diagram of an 2 isosceles triangles, where ABC is a big triangle and a ADE, is just inside the top portion of ABC. Isosceles triangle ABC is similar to a isosceles triangle ADE what is the length of DE, which is the base part …