The answer is 16, you substitute the value of the variable into the equation and simplify
Answer: D
Step-by-step explanation:
-7 isn't greater than -4
The perimeter:

The length of the longer side:
Answer:
80°
Step-by-step explanation:
The sum of the two angles (red and blue) is 145°, so you have ...
(4x +5)° +(6x -10)° = 145°
10x = 150 . . . . . . . . divide by °, add 5, simplify
x = 15 . . . . . . . . . . . divide by 10
Then the measure of the angle of interest is ...
m∠XMN = (6x -10)° = (6·15 -10)° = 80°
Answer: add 1 to both sides
-1+r+1≥4+1
simplify
x≥5
Step-by-step explanation: