Answer:
x < 6
Step-by-step explanation:
Given
5x - 9 < 21 ( add 9 to both sides )
5x < 30 ( divide both sides by 5 )
x < 6
Answer:
36 because the absolute value of -9-3 is 12, and then 12 times 3 is 36
Answer:
no it's an acute triangle
Step-by-step explanation:
why? because any angle below 90 degrees is considered an acute triangle which in your case 20,24, and 36 are all very far from being a right triangle