Step-by-step explanation:
Let the required number be x.
According to the given information:

Hence the required number is 31.
Answer x=6
(x-6)^2=0 using a^2-2ab+b^2=(a-b)^2, factor the expression
x-6=0 the only was an exponetiation can be 0 is when the base equals 0
move the constant to the right hand side and change its sign
ANSWER X=6
Answer: $8,925
Step-by-step explanation:
Convert 15% to decimals. You can do this by dividing by 100.

Now, take the total amount of the sales and multiply it by this decimal.

<h3>
Answer: 41 cm^2</h3>
Explanation:
Form a horizontal line as shown below (see attached image). This forms 2 separate smaller rectangles
- The bottom rectangle has area of 4*8 = 32 cm^2
- The top rectangle has area of 3*3 = 9 cm^2
The total area is therefore 32+9 = 41 cm^2
You can say "square cm" or "sq cm" in place of the "cm^2".