Answer:
x= -0.5
Step-by-step explanation:
5(2x+4)=15
10x+20=15
10x= -5
x= -0.5

Cross multiply
2(11-x) = 1(3x+2)
Distribute
22-2x = 3x+2
Subtract 22 from both sides
-2x = 3x-20
Subtract 3x from both sides
-5x = -20
Divide both sides by -5
x=4
Angle measurement DEF=107 degrees
You must first find angle F- since it is against a flat line, we know 180=F+135. Subtract 135 from each side and we find F is 45 degrees.
Then, since a triangle’s angles must always equal 180 degrees, we subtract angles D and F from 180 to get 107 degrees.
U would use the next place value so for 200 u would use 1000 as the denominator and fot 2000 u would use 10000.
hope this helped