(Can't really explain it... hopefully these steps can help you.. maybe I'm just too lazy..)
2h^3j^-3k^4
-----------------
3jk
2h^3k^4
= -------------
3j^4k
2h^3k^3
= --------------
3j^4
Answer: 2.25
Divide the corresponding values. You'll divide figure 2's length over figure 1's corresponding length. So 18/8 = 2.25
This means each side of figure 2 is 2.25 times larger than the corresponding side for figure 1
Answer:
Mr.Lin's present age is 30 years now. His son is 8 years old now.
Step-by-step explanation:
Let L = Mr.Lin's present age,
S = his son's present age.
First equation is
L + S = 38. (1)
The second equation is
L + 3 = 3*(S+3) (2) ("In three years' time, Mr.Lin will be three times as old as his son.")
From (1), express S = 38-L and substitute it into (2). You will get
L + 3 = 3*((38-L)+3), or
L + 3 = 114 - 3L + 9,
4L = 114 + 9 - 3,
4L = 120,
L = 30.
Answer
40
Explanation
It’s 40 because if you do 20/3 x 2/2 you will get 40/6
3/4 would be a fraction, equivalent to 6/8.
