Question

PLEASE HELP ME!! I DONT UNDERSTAND!!

Answer 1

Answer:

$\large\boxed{CU=118}$

Step-by-step explanation:

ΔUFW and ΔCDW are similar (AA). Therefore the siades are in proportion:

$\dfrac{UW}{CW}=\dfrac{VW}{DW}$

We have

UW = 36x-1

CW = 26

VW = 110

DW = 20

Substitute:

$\dfrac{36x-1}{26}=\dfrac{110}{20}$              cross multiply

$20(36x-1)=(26)(110)$          use distributive property

$(20)(36x)+(20)(-1)=2860$

$720x-20=2860$                add 20 to both sides

$720x=2880$       divide both sides by 720

$x=4$

$UW=36x-1\to UW=36(4)-1=144-1=143$

CU = UW - CW

Susbtitute:

$CU=143-26=118$