Answer: OPTION A
Step-by-step explanation:
We need to remember that Product of powers property, which states that:
Let's check the options:
A. For 
you can apply the property mentioned before. Then:
(It is the equivalent expression)
B. Add the exponents:
(It is not the equivalent expression)
C. For 
you can apply the property mentioned before. Then:
(It is not the equivalent expression)
D. We know that 
and we maje the addition indicated in this option, we get:
(It is not the equivalent expression)
72:80
9:10
Divide 72 and 80 by 8 to simplify it and get the ratio
Answer:
54
Step-by-step explanation:
to evaluate substitute b = 18 into 3b
3b = 3 × 18 = 54
Answer:
C) 3(x+7)²
Step-by-step explanation:
Answer:
0.002M
Step-by-step explanation:
2.7= -log(H^+)
-2.7=log(H^+)
10^-2.7 M=H^+
0.0002M=H^+
