Answer:
45 old houses
Step-by-step explanation:
new houses : old houses
3 : 9
15 : ?
(3 = 1st ratio and 9 = 2nd ratio)
To find the missing ratio, divide the first ratio from the new ratio:
15 / 3 = 5
Take the product and multiply that by the second ratio to find the missing ratio:
9 x 5 = 45
Answer:
find the value of:Cos = 0.54
the fuction f(x) is equal to:

now, to evaluate f(15) we have to replace x=15 so the equation is going to be equal to:
Answer: x=y-1
Step-by-step explanation: