Answer:
![\frac{4a^{2} + 15b}{10ab}](https://tex.z-dn.net/?f=%5Cfrac%7B4a%5E%7B2%7D%20%2B%2015b%7D%7B10ab%7D)
Step-by-step explanation:
find the least common denominator for both fractions then combine them to find:
![\frac{4a^{2} + 15b}{10ab}](https://tex.z-dn.net/?f=%5Cfrac%7B4a%5E%7B2%7D%20%2B%2015b%7D%7B10ab%7D)
The answer is B. 4 yards.
You're trying to find the length of the field in yards, which is L, so to do that you would have to isolate L. Subtract 9 from both sides, which would give you 7L=37, then divide 7 by both sides, L=4.
Answer: its option 3 I just did the test right now
Step-by-step explanation:
First, we multiply 1/5 by 4, and 3/4 by 5.... So we use 19/20 of the flour already.
There was 1/20 fraction of flour left so divide that by 5 you get- 1/100 There was 1/100 of the flour in each of the 5 containers.
For this case we must express the number "423" in a radical way.
We have to, we can rewrite it as:
![423 = 9 * 47 = 3 ^ 2 * 47](https://tex.z-dn.net/?f=423%20%3D%209%20%2A%2047%20%3D%203%20%5E%202%20%2A%2047)
So, we have to:
![423 = \sqrt {3 ^ 2 * 47}](https://tex.z-dn.net/?f=423%20%3D%20%5Csqrt%20%7B3%20%5E%202%20%2A%2047%7D)
By definition of properties of powers and roots we have:
![\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}](https://tex.z-dn.net/?f=%5Csqrt%20%5Bn%5D%20%7Ba%20%5E%20m%7D%20%3D%20a%20%5E%20%7B%5Cfrac%20%7Bm%7D%20%7Bn%7D%7D)
So:
![423 = \sqrt {3 ^ 2 * 47} = 3 \sqrt {47}](https://tex.z-dn.net/?f=423%20%3D%20%5Csqrt%20%7B3%20%5E%202%20%2A%2047%7D%20%3D%203%20%5Csqrt%20%7B47%7D)
Answer:
![3 \sqrt {47}](https://tex.z-dn.net/?f=3%20%5Csqrt%20%7B47%7D)