Answer: substitution
Explanation:
Answer:
D
Step-by-step explanation:
(2*6)^4=20736
2^4*6^4 is the same as the expression which is equal to 20736
3a + 3b
combine like terms: a+a+a=3a
b+b+b=3b
3a +3b
Answer:
S = 7cm
Step-by-step explanation:
A = 49cm² = 7 × 7 (Square root of 49 as Area = s²)
S = 7cm