Answer:
option A. 21 sec
Step-by-step explanation:
Speed = the distance over the time
Given: 
Speed = 2 m/s  and distance = 42 m and time = t
So,
2 = 42/t
Solve for t
t = 42/2 = 21 sec.
The answer is option A. 21 sec
 
        
             
        
        
        
Answer:
12 days
Step-by-step explanation:
Total gallons of the family's drinking water needs = gallons consumed by children + gallons consumed by adults
3 + 1
 + 1 =
 =
Converting to decimals 
 3.5 + 1.75 = 5.25 = 5
If there are 63 gallons, the water supply would last for : 
63 / 5.25 =12 days
 
        
             
        
        
        
Answer:
This means 100000 possible zip codes if repeatable
Step-by-step explanation:
 
        
             
        
        
        
<h3>
Answer:  5 cakes</h3>
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Explanation:
Let's start off converting the mixed number 12 & 1/4 to an improper fraction. 

Do the same for the other mixed number 2 & 1/3.

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From here, we divide the two fractions. I converted them to improper fractions to make the division process easier.

The last step is to convert that result to a mixed number.

Note that 21/4 = 5.25 and 1/4 = 0.25 to help check the answer.
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Therefore, she can make 5 cakes. The fractional portion 1/4 is ignored since we're only considering whole cakes rather than partial ones.
 
        
        
        
My did ask the ppl who make Big Macs