Since this is a proportion, we cross multiply.
12/2=9/x (The variable "x" is used the represent the unknown number, and this is the number we are solving for)
12*x=2*9 (Cross multiply)
12x=18 (Simplify)
x=18/12 (Divide each side by 12)
x = 3/2 (Simplify fraction)
The unknown number is 3/2, or 1.5.
Answer:
315
Step-by-step explanation:
Area = Length x Width
Area = 21 x 15
Area = 315
The equation would be 30+3m=162 then you solve the problem
There will be a vertical stretch with a factor of 3.
Both variables (x) are 3.
4×3=12
12-2=10
16×3=48
48-8=40
3 fits the variable of the missing number.