supplementary angles add up to 180°.
x = measure of such angle
x + 20 = measure of her sibling.
since "x" has 20 less than her sibling, then clearly her sibling has to have 20 more than "x".

Y= -1x + -1 is the answer
Answer:
1080 dollars
Step-by-step explanation:
Well you said yards and meters but imma ingore that.
So the perimeter is 27+27+18+18 = 90
90*12= 1080
Answer: x^2 = 2
Step-by-step explanation: 3x^2 + 4x=12
6x^2=12
x^2= 12/6
x^2= 2
Answer:
well the money doubles every 6 years but its only been 4 so
7,400 x 4 = 29,600
$29,600 is the answer