Answer:
1/2=20/40 19/20=38/40
Step-by-step explanation:
so the first option
Answer:
There are 150 blue marbles in Alex's bag.
Step-by-step explanation:
Let 
, 
, 
be the quantities of red, blue and yellow marbles, respectively. From statement we derive three rational equations for initial and final ratios:
Initial ratio
(1)
(2)
Final ratio
(3)
After some algebraic handling we get the following system of linear equations:
(1)
(2)
(3)
The solution of the system of linear equations is:
, 
, 
There are 150 blue marbles in Alex's bag.
Answer:2
Step-by-step explanation:
Because it doubled
I think it would be 150....
Assuming log10x means log(base 10)x
Let's rewrite 10^y = 3 by taking the log(base 10) of both sides
log (10^y) = log (3) Remember that log(10^y) = y
y = log (3)
This is the same as our function f(x) = log(x), or f(3) = log(3)
Consult our graph of f(x) to find the y value at x=3
Checking the graph, we can find the value of y at point x=3
The value is .477. Therefore, y =.477, or about 1/2
