Answer:
r = 33 , s = 18
Step-by-step explanation:
Rationalise the denominator by multiplying both numerator and denominator by the conjugate of the denominator.
The conjugate of 4 - 
is 4 + , then
← expand numerator/denominator using FOIL
= 
= 
= 
= 
with r = 33 and s = 18
Answer:
60
Step-by-step explanation:
Let the number of dog owners and cat owners be 4x and 5x
4x = 48
x = 48/4
x = 12
Therefore 5x = 5×12
= 60
The property demonstrated is Associative property.
Answer:
Technically he isn't, but he is off by only 0.5 cm.
Step-by-step explanation:
To check, we can use pythagorean theorem:
22.8^2 + 13.82^2 = about 22.6
However, Mr. Lim got it as around 26.1
