Which of the following is one disadvantage of using sanitary landfills?
A. They can pollute groundwater.
B. They can release more nitrogen into the atmosphere.
C. They can cause depletion of oxygen.
D. They can pollute rivers.
PLEASE HELP
A. They can pollute groundwater.
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which expression is equivalent to (2x9)^4?
A:2^4x9^4
B:2^4x9
C:2x9^4
D:2^9x4^9
The expression that is equivalent to (2x9)^4 is option A: 2^4 x 9^4.
To simplify (2x9)^4, we start by multiplying 2 and 9 together to get 18. So, we have (18)^4.
Then, we can use the rule that says (a^n)^m = a^(n*m) to simplify further. So, (18)^4 can be written as (2 x 9)^4, which is equivalent to 2^4 x 9^4.
Therefore, the correct answer is A: 2^4 x 9^4.
Which expression is equivalent to 5^x7^2?
A:(5x7)^2
B:(2x7)^5
C:(5x2)^7
D:(5x2)^2
Please help bot
The expression that is equivalent to 5^x7^2 is option A: (5 x 7)^2.
To simplify 5^x7^2, we need to recognize that 5 and 7^2 (or 49) are two separate factors, with no common factor between them.
So, we can write 5^x7^2 as (5^x)(49).
Since 49 is a perfect square, we can simplify further to get (5^x)(7^2), which is equivalent to (5 x 7)^2.
Therefore, the correct answer is A: (5 x 7)^2.
Simplify:(5x7)^2
To simplify (5 x 7)^2, we need to perform the multiplication inside the parentheses first, and then raise the result to the power of 2.
So, (5 x 7)^2 can be rewritten as (35)^2.
To simplify further, we can use the formula for (a)^2, which is a x a. Therefore, (35)^2 can be written as:
(35)^2 = 35 x 35
We can now multiply 35 by 35 to get the final answer:
(5 x 7)^2 = (35)^2 = 35 x 35 = 1225
Therefore, (5 x 7)^2 simplifies to 1225.
Which expression is equivalent to 3/2^3?
A:3/2^3
B:3/2^3
C:3/2
D:3^3/2^2