9.Mei Li dresses
a. beautiful
b.beautifull
Answers
Answer:
a) beautiful...
Explanation:
To find four solutions , we will substitute x with any real number and calculate y value:
when x= 1 ==> y=-3(1)-6 = -3-6=-9. Or the pair (1,-9) is a solution.
When x= 2 ==> y= -3(2)-6= -12. or the pair (2,-12) is a solution.
When x= -3 ==> y=-3(-3)-6 = 3. ...
When x= -2 ==> y= -3(-2)-6= 0\
Answer:
Since n = 3, the element belongs to the 3
rd
period. It is a p–block element since the last electron occupies the p–orbital.
There are four electrons in the p–orbital. Thus, the corresponding group of the element
= Number of s–block groups(3s
2
) + number of d–block groups([Ne]
10
+ number of p–electrons(3p
4
)
= 2 + 10 + 4
= 16
Therefore, the element belongs to the 3rd period and 16th group of the periodic table. Hence, the element is Sulphur([Ne]
10
3s
2
3p
4
)