Supplementary = 180 degrees...
A + B = 180
3x + 12 + 7x + 38 = 180
10x + 50 = 180
10 x = 130
x = 13
To find the A just substitute x in...
3 ( 13) + 12
A = 51
To check substitute the x..
A + B = 180
3(13) + 12 + 7(13) + 38 = 180
51 + 129 = 180
180 = 180
It has the same side of the length and feet
I hope this helps u, this is my last year answer for the question
Answer:
All angles are 90.all rectangles have angle measures of 90* and a dilation just decreases the size and does not change its shape or angles.
Step-by-step explanation:
All rectangles have angle measures of 90* and a dilation just decreases the size and does not change its shape or angles.
Answer:
xy+y2+x+3y+2
Step-by-step explanation:
