Answer:
k = 5
Step-by-step explanation:
y = kx
15 = k(3)
k = 15/3
k = 5
3x4=12 12x5=60 60x6=360 360x7=2,530 2,530x9=22,690
Dividing the parallelogram in half and applying trigonometry is the easiest solution for me.
I believe 25 has to be added as
(x*5)^2 = x^2 + 10x + 25
If the sum of two numbers is x
Then the equation is like this:
a+b = x
Then it says one of the number is 12. Change either a or b into 12
12 + b =x
If we want to find the other number, we need the make it into the subject
b = x - 12
Hope that help.
