x^2 = 20.
sqrt(x^2) = sqrt(20)
x = +- 2sqrt(5)
Answer:
2 and -2
How do you find the area of this triangle?
1 answer:
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Answer:
The number of ways in which students were chosen is 45 ways .
Step-by-step explanation:
Given as :
The number of students in a class = x = 10
The number of students chosen by teacher to go to library = y = 2
Let The number of ways in which students were chosen = n ways
<u>Now, According to question</u>
So, number of ways in which students were chosen =
Or, n ways =
Or, n =
Or, n =
Or, n =
Or, n =
Or, n = 5 × 9
i.e n = 45
So, The number of ways in which students were chosen = n = 45 ways
Hence,The number of ways in which students were chosen is 45 ways . Answer