Answer = 1.414
I used the prime factorization method.
Hope this answers your question.
Step-by-step explanation:
let's look at the full numbers under the square roots when bringing the external factors back in :
sqrt(9×9×2) - sqrt(3×3×7) + sqrt(8) - sqrt(28)
and let's present these numbers as the product of their basic prime factors
sqrt(3×3×3×3×2) - sqrt(3×3×7) + sqrt(2×2×2) - sqrt(2×2×7)
now we see that we have 2 pairs of square roots : 1 pair ends with a factor of 2, and one pair with a factor of 7.
let's combine these
sqrt (3×3×3×3×2) + sqrt(2×2×2) - sqrt(3×3×7) - sqrt (2×2×7)
and now we move the factors of 2 and 7 back out in front (of course, we need to apply the square root on these factors) :
9×sqrt(2) + 2×sqrt(2) - 3×sqrt(7) - 2×sqrt(7) =
= (9+2)×sqrt(2) - (3+2)×sqrt(7) = 11×sqrt(2) - 5×sqrt(7)
and that is the first answer option.
Given:
Total students = 60
Student passed = 85%
To find:
The number of students who failed and then convert it in %.
Solution:
We have,
Number of passed student = 85% of Total students
= 
= 
So, number of passes students is 51.
Number of students who failed = Total students - Passes students
= 
= 
So, number of students who failed is 9.
Therefore, 15% students fail in the test.
Answer:
22 groups of ten
Step-by-step explanation:
121 plus 116 = 237
237 - 9 = 228
lets split 228 into parts
200
20
8
there are 20 groups of ten in 200
2 groups of ten in 20
and 8 has 0 it is a remainder
20 groups plus 2 groups = 22
22 groups of ten
this probobly isn't the easiest way but I don't know how but this is my thought process.
You would need 9 boxes of tiles to cover it.
I hope this helps! :)
