20 units
Perimeter =add up all sides.
Perimeter = 5+1+5+9
=20 units
Answer:
Step-by-step explanation:
She added 3x and -2x, getting 5x, instead of x. She needs to pay more attention to the positive/negative signs.
Answer:
1
Step-by-step explanation:
everything rise 0 power is 1.
Answer:
it's 3/50
Step-by-step explanation: