I can't make a ten frame cause I'm on a computer and i can't take pictures. But 14-6 is 8.
IQR = Q3 - Q1
total amount of people in Town A = 5 +3+9+4+20+9+5+7+6 = 68
Divide these into 4 groups(68/4 = 17): so Q1 =17, Q2 = 34, Q3 = 51 and Q4 = 68
IQR = Q3 - Q1 = 51 - 17 = 34
IQR =Q3 -Q1
Total amount of people in town B = 8+8+3+5+5+6+3+9+9 = 56
Divide these into 4 groups(56/4 = 14): so Q1 = 14, Q2 = 28, Q3 = 42, Q4 =56.
IQR = Q3 - Q1 = 42 - 14 = 28
To factor the equation, first make sure the right hand side is equal to 0. Do this by subtracting 25 from both sides of the equation.
The equation becomes,
n^2-8n-9 = 0
Factoring the equation now gives you (n-9)(n+1) = 0.
In order to find the solutions to this equation, find values of 'n' that make the equation equal to 0.
In this case, if n is 9 or -1, we get the answer 0.
Proof: (9-9)(n+1) => (0)(n+1) = 0
or (n-9)(-1+1) => (n-9)(0) = 0.
Hope this made sense! If it didn't, please ask questions!
it's the commutative property!
