Answer for #12 Is Length = 630FT & Width 335 FT
Answer for #13 is 4600 Items & 7800 Items. I have this workbook with the same problems :) Hope this helped :)
Answer:
Speed of boat in still water is 6km/h
Speed of current is 4km/h
Step-by-step explanation:
We know speed = distance / time
Let the speed of boat in still water be x
Let the speed of current be y
Hence the speed of boat, down stream = 
Distance downstream = 20km
Time taken = 2 hours
We have

......(1)
Speed of boat upstream = 
Distance upstream = 4
Time taken = 2
We have

...(2)
Adding (1) & (2)


Substituting in (1) we get

Answer:
Step-by-step explanation:
Pi is the ratio of a circle's circumference to its diameter.
The circumference = π * the diameter of the circle (Pi multiplied by the diameter of the circle)
Hope this helps!
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Geometry</u>
Volume of a Sphere Formula: 
Step-by-step explanation:
<u>Step 1: Define</u>
Radius <em>r</em> = 9 ft
<u>Step 2: Solve for V</u>
- Substitute in <em>r</em> [Volume of a Sphere Formula]:

- [Volume] Evaluate exponents:

- [Volume] Multiply:

12226 stores will be there in 2016
<em><u>Solution:</u></em>
<em><u>The growth function is given as:</u></em>

Where,
y is the future value
a is the initial value
r is the growth rate
t is the number of years
From given,
In 2000, a company had 1147 stores nationwide
By 2002, this total had grown to 1542
Therefore,
y = 1542
a = 1147
t = 2000 to 2002 = 2 years
r = ?
<em><u>Substituting we get,</u></em>

Taking square root of both sides

<em><u>If the number of stores continues to grow exponentially at the same rate, how many stores will there be in 2016?</u></em>
Therefore,
y = ?
a = 1147
r = 0.1594
t = 2000 to 2016 = 16 years
<em><u>Substituting we get,</u></em>

Thus 12226 stores will be there in 2016