3x+4y=12
9x-2y=15
we will use elimination
multiply 3x+4y=12 by -3
-9x-12y=-36
9x-2y=15
_________ add
-14y=-21
÷-14 both sides
y=1.5
find x
3x+4 (1.5)=12
3x+6=12
-6 both sides
3x=6
÷3 both sides
x=2
x=2
y=1.5
Answer:
Step-by-step explanation:
121=irrational
100= rational
99= irrational
10=rational
Answer:
a) 49.41
b) not quite sure
Step-by-step explanation:
sorry
Answer:
c
Step-by-step explanation:
because it has no fraction and pie is a symbol not a number
