If you could post the picture I can help
Answer:
11
Step-by-step explanation:
5x+15+20=90
5x+35=90
-35 from both sides
5x=55
divide both sides by 5
x=11
Please include the inequality
Answer:
D
Step-by-step explanation:
3x and 30 are vertically opposite angles and congruent, then
3x = 30 ( divide both sides by 3 )
x = 10 , thus
3x = 3 × 10 = 30°
x = 10 ; angle measure is 30° → D
Answer:
The commutative property
Step-by-step explanation:
The commutative property of addition states that a+b=b+a ( i.e you can move things around without changing the sum)
example:
3x-y=3x+(-y)=(-y)+3=-y+3x
