As per the problem
The chemicals in my swimming pool use a ratio of 5 tablets of chlorine for every 14 days.
we have been asked to find
Which ratio shows the number of chlorine tablets needed for 42 days?
Since for each 14 days the number of tablets required is 5
So if you multiply the number of days by some number then, we will have to multiply the number of tablets required by the same number.
So When number of days
Then the number of tablets required for 42 days is 
Solve for x. The multiplicity of a root is the number of times the root appears.
x=-7 (multiplicity of 1)
x=3 (multiplicity of 2)
x=2-i (multiplicity of 1)
x=2+1 (multiplicity of 1)
Answer:
a. 13,17,21
b. an=a1+(n-1)4
c. no
Step-by-step explanation:
The product of multiplication of 16 × 9 gives us; 144
<h3>Multiplication</h3>
We want to find the product of 16 and 9.
Now, to solve this we can use a little illustration for example if I have a basket of oranges and I want to given 9 people each 16 oranges, it means that the total number of oranges I will give out is; 16 × 9 = 144
Thus, our question answer is 16 × 9 = 144
Read more on multiplication at; brainly.com/question/2475734
