Answer: A
Step-by-step explanation:
Answer:
13/20p
Step-by-step explanation:
Here, we want to write an expression from the given statement
We start from the product of 20 and p
Mathematically. that is 20 * p = 20p
Now to find the ratio, we simply place 12 over the product
We have this as;
13/20p
This is a quadratic equation, i.e. an equation involving a polynomial of degree 2. To solve them, you must rearrange them first, so that all terms are on the same side, so we get

i.e. now we're looking for the roots of the polynomial. To find them, we can use the following formula:

where
is a compact way to indicate both solutions
and
, while
are the coefficients of the quadratic equation, i.e. we consider the polynomial
.
So, in your case, we have 
Plug those values into the formula to get

So, the two solutions are


Answer:
Well from where the equation is now, I don't see any further things I can do. What is the context of the problem?
Step-by-step explanation:
Answer:
1/45
Step-by-step explanation:
There are 10 marbles
P ( yellow) = yellow marbles / total = 2/10 = 1/5
We do not replace the marble
There are 9 marbles, 1 of which is yellow
P ( yellow) = yellow marbles / total = 1/9
P ( yellow, no replacement, yellow) = 1/5 * 1/9 = 1/45