00:01
Diagonals of rectangles are equal.
00:04
Okay, so if these are diagonals of rectangles, they are, again, equal to each other.
00:08
So 6x minus 7 would be equal to 3x plus 2.
00:13
Subtract 3x to both sides.
00:15
You get 3x minus 7 equals 2.
00:17
Add 7 to both sides and 3x equals 9, divide by 3, and x is 3.
00:23
Which means the length of the diagonals, substitute 3 is 11.
00:27
And 11 is the answer number 25, 26.
00:33
This is going to all be the same.
00:35
Since these are diagonals, they're equal to each other...