sam was building a suspension bridge for the playground at an elementary school and needed some chain link and rope. He bought a total of 80 feet of materials. The chain link cost $2.00 per foot, and the rope cost $1.50 per foot. He spent a total of $135. How much of each did he buy?

Step-by-step explanation:

Let c and r represent the quantities of chain link and rope that Sam purchases, respectively.

  c + r = 80 . . . . . total of lengths purchased

  2c +1.5r = 135 . . . . cost of amount purchased

Subtracting the second equation from twice the first gives ...

  2(c +r) -(2c +1.5r) = 2(80) -(135)

  0.5r = 25

  r = 50

  c = 30

Sam bought 30 feet of chain link and 50 feet of rope.

1 and 2

step-by-step explanation:

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

step-by-step explanation:

given   that triangle lno is congruent to triangle lnm.

we have to fill up the blanks in the given question.

according to above order of congruency   kept in mind we can say that

∠lno ≅ ∠lnm

∠oln ≅ ∠mln

ln ≅ ln due to common in both.

hence, by sas congruency,

the side angle side rule   states that if two sides and the included angle of one triangle are congruent to another triangle, then these two triangles are congruent.