K = 4pq^2
k/4p = q^2
0.5(k/p)^1/2 = q
Set up multiplication of ratios so that they cancel out units that you do not need in your final answer...
5lb($4.20/2lb)=$10.50
Expression simplified: 
Step-by-step explanation:
The expression that we have in this problem is:

The first type of operation that we have to solve in such expression are multiplication/division.
In this expression, there is only one multiplication, that is:

So we can rewrite the expression as

Now we can evaluate the sum of the similar terms: in this case, similar terms are only 3 and 4, and their sum is

Therefore, the expression can be rewritten as

Learn more about simplifying expressions:
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Rounding 2.199. The tenths digit is 1, which is 4 or less, so you will round down. Re-write 2.199 without the decimal places: 2 . So 2.199 rounds to 2.
Answer:
wrong answer.
Right answer: √30 ≈ 5.48
Step-by-step explanation:
The answer for √2 × √15 is not 30, that answer is wrong
√2 × √15 = √2*15 = √30 ≈ 5.48
Hope this help you :3