Answer:
Angle STR = 78°
Step-by-step explanation:
So, since line QS is a straight line, we know that it's 180°. We also know that angles QTR and STR both add up to 180°. That gives us an equation:
20x + 12 + 10x + 33 = 180
Combine like terms
30x + 45 = 180
Subtract 45 from both sides
30x = 135
Divide both sides by 30
x = 4.5
Now we know the value of x. We just need to plug it into angle STR's given value:
10(4.5) + 33 = angle STR
45 + 33 = angle STR
78° = angle STR
Answer: 
Step-by-step explanation:
Given
The inequality is 
adding both side 7
Multiply both sides by 
the shaded region in the figure indicates the solution set.
Heroes never give up in the battle against evil, and they aren’t afraid to ask others for help.
Answer:
a
Step-by-step explanation:
Answer:
The mean would be 85 :)
Step-by-step explanation:
