Answer:
Step-by-step explanation:
5D-7=38
5D=38+7=45
D=45/5=9
12-3S=48
-3S=48-12=36
S=36/(-3)=-12
56/8 = 7
24/8 = 3
So we have:
7:3
Answer: x= 19.5
(4x+12) = 90
Step-by-step explanation:
Notice the denoted right angle at the very top left. This means those intersecting lines are perpendicular forming 90 degree angles. All right angles are equal in measure so all 4 angles at the top are 90 degrees. We can then use corresponding angles to know that all of the bottom 4 angles are also 90 degrees. Now we can solve for x. (4x+12) =90. 4x= 78. X= 19.5