Answer:
3
Step-by-step explanation:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
3^4 +9^2÷3^3-9^2
81+81÷27-81
81+3-81
3
Answer:
t ≥ 18
Step-by-step explanation:
He has run 12 miles plus some more miles t. He need to run at least 30 miles
12+t ≥ 30
Subtract 12 from each side
12+t-12 ≥ 30-12
t ≥ 18
Answer:
r=9
Step-by-step explanation:
13r=117
r=117/13
r=9
Answer:
B
Step-by-step explanation:
-24x + 8y = 16
+24x +24x
8y = 16 + 24x
8y/8 = 16/8 + 24x/8
y = 2 + 3x
Answer: y = 2 + 3x