So try to isolate a by division and such
K=4a+9ab
we use reverse dstributive which is ab+ac=a(b+c) so
undistribute a
4a+9ab=a(4+9b)
k=a(4+9b)
divide both sides by (4+9b)

=a
a=
Missing Part:
a. A red ball is drawn
b. A white ball is drawn
Answer:
a.
b. 
Step-by-step explanation:
Given



First, we need to calculate the total



Solving (a): Probability of Red.
This is calculated by dividing number of red balls by the total
So:



Solving (a): Probability of White.
This is calculated by dividing number of white balls by the total
So:



Answer:
1.2833333333....
Step-by-step explanation:
Just add it
The solution to the given equation is w = -5
<h3>Solving of expression</h3>
What is an Algebraic Expression? An algebraic expression in mathematics is an expression which is made up of variables and constants, along with algebraic operations
Given the expression below as shown;
-10w = 50
Divide both sides by -10
-10w/-10 = 50/-10
w = -5
Hence the solution to the given equation is w = -5
Learn more on equation and expression here: brainly.com/question/22048677
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