Pls help! I need to show my work

D 62.5

Step-by-step explanation:

Triangles ABE and and DCE are similar

we know this by AAA theorem

A=D and B=C by alternate interior angles theorem

e and e are congruent by vertical angles theorem since all 2 angles match corresponding angles, the are similar, which means the triangle and corresponding sides are also proportional

1/5^2 = 7.56/45

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,