Answer: 20 cm
Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain a variable.
Since you answered the first 2 i can go to c and d.
C can really be anything since it's being multiplied by 0 no matter what you put there it will be 0.
But for D it's 1/10^2
Hope this helps ^^
<h2>
Rules of Exponents</h2>
There are many rules that apply to operations involving exponents. In this question, we'll need the following:
<h3>
The division rule</h3>
- ⇒

<h2>Solving the Question</h2>
We're given:
(solve for k.)
⇒ Rewrite as a fraction:

⇒ Use the division rule:

Therefore, the value of <em>k</em> is 14.
<h2>Answer</h2>
<em>k</em> = 14
9/10 is .9
51 subtracted by 6 is 45
45 multiplied by .9 is 50
.9 multiplied by 50 is 45
45 plus 6 is 51
So you missing number would be 50.
Hope this helps!