​ABCD is an inscribed polygon. Given mBCD=2(m∠A) - Response area
mDAB=2(m∠C) - Inscribed Angle Theorem mBCD+mDAB=360°
2(m∠A)+2(m∠C)=360° - Response area
​m∠A+m∠C=180°​ - Division Property of Equality ​​
∠A and​∠C​ are supplementary angles. - Response area

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

it alot will look like this 4.4

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

answer: you need to organize this better it does not make sense.

step-by-step explanation: ?