Answer:
<h2><u>
10</u></h2><h2><u>
4</u></h2>
Step-by-step explanation:
To determine how much a decimal was multiplied, you need to find how many places the decimal moved. 
In this case we can see the decimal moved once. How many times the decimal moved can be represented by the zeros in the number. So 10 = 1
100 = 2     1,000 = 3 and it keeps going. 
So since the decimal moved 1 time, the answer to question one is 10
Now question 2. 
Both 8.4 ÷ 2.1 and 84 ÷ 21 will give the exact same answer. It is just easier to solve. So solve which one is easier for you. I did 84 ÷ 21. 
84 ÷ 21 = 4
We can verify our answer by multiplying the the divisor by the quotient
21 * 4 = 84
So 4 is the answer to question 2
 
        
             
        
        
        
Part A:
The drawing representing Eli's walking pattern is attached.
Part B:
The total distance worked by Eli is given by 
12 + 32 + 14 = 58 feet.
Part C:
The distance of Eli from his house is given by 
12 + 32 - 14 = 30 feet.
 
        
        
        
Answer:

Explanation:
The given addition exercise is:

The LCM of the denominator (5 and 3) = 15
Multiply 2/5 by 3/3

Multiply 1/3 by 5/5

The addition becomes

Therefore, we can fill in the vacant boxes as shown below:
 
 
        
        
        
Answer:
10.4 meters
Step-by-step explanation:
 
        
             
        
        
        
<em>29 ml</em>
- Step-by-step explanation:
<em>Vcube = 1cm×1cm×1cm = 1 cm³</em>
<em>1 cm³ = 1 ml</em>
<em>If this cube is dropped into a 28ml of water the new reading will be 29 ml.</em>