42 times 28 is how you will get the area. If you need perimeter then just do (42 times 2) plus (28 times 2) and there you go:)
Answer:
3) 
4) a) 
b) 
Step-by-step explanation:
<u>Exercise 3</u>



<u>Exercise 4</u>
a) If L2 is parallel to L1, it has the same slope (gradient) ⇒ 
If L2 passes through point (3, 1):



So L2 = L1
b) If L3 is perpendicular to L1, then the slope of L3 is the negative reciprocals of the slope of L1 ⇒ 
If L3 passes through point (-5, 2):



· Author has 117 answers and 6.1K answer views
If they share the money in ratio 7:n
And Ann had 28%
Thus unit ratio will be 28/7 = 4
Since Bill had 100 - 28 = 72%
Bill ratio will be 72/4 = 18
7:n will be 7:18
Thus the value of n is 18