Question

Item 28

Answer 1

Answer:

Required equation: $366=x-30$

Length of the main span of the Dames point Bridge = 396 meters

Step-by-step explanation:

Main span of the Sunshine Skyway Bridge = 366 meters        .... (1)

Let $x$ represent the length of the main span of the Dames point Bridge.

It is given that the bridge's main span is 30 meters shorter than the main span of the Dames Point Bridge.

Main span of the Sunshine Skyway Bridge = $x-30$ meters     .... (2)

From (1) and (2) we get

$366=x-30$

Add 30 on both sides.

$366+30=x-30+30$

$396=x$

Hence, the required equation is $366=x-30$ and the length of the main span of the Dames point Bridge is 396 meters.