Question

TREC is a rectangle. What is the length of ET? help please

Answer 1

ET = 34

Explanation:

in a rectangle

• diagonals bisect each other

the for diagonal RC

2x - 3 = x + 7 ( subtract x from both sides )

x - 3 = 7 ( add 3 to both sides )

x = 10

then

RC = 2x - 3 + x + 7 = 3x + 4 = 3(10) + 4 = 30 + 4 = 34

• the diagonals are congruent

Then

ET = RC = 34