Answer:
To multiply two numbers in scientific notation, multiply their coefficients and add their exponents. To divide two numbers in scientific notation, divide their coefficients and subtract their exponents. In either case, the answer must be converted to scientific notation.
Step-by-step explanation:
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
17.156 is the irrational number as it is terminating(means it ends) 
Rest all are irrational 
 
        
             
        
        
        
Answer:
B 
Step-by-step explanation:
A straight line equals to 180 degrees. The example shown is a linear pair!
 
        
             
        
        
        
A. Every month Population will increase by a factor of 0.84%.
B.  Every 3 months Population will increase by a factor of 2.5%.
C. Increase in population in every 20 months is 10% + 6.72% = 16.72%.
<u>Step-by-step explanation:</u>
Here, we have  number of employees in a company has been growing exponentially by 10% each year. So , If we have population as x in year 2019 , an increase of 10% in population in 2020 as   which is equivalent to
 which is equivalent to  .
.
<u>A.</u>
For each month: We have 12 months in a year and so, distributing 10% in 12 months would be like  . ∴ Every month Population will increase by a factor of 0.84%.
 . ∴ Every month Population will increase by a factor of 0.84%.
<u>B.</u>
In every 3 months: We have , 12 months in a year , in order to check for every 3 months   and Now, Population increase in every 3 months is
 and Now, Population increase in every 3 months is  .  ∴ Every 3 months Population will increase by a factor of 2.5%.
.  ∴ Every 3 months Population will increase by a factor of 2.5%.
<u>C.</u>
In every 20 months: We have , 12 months in a year in which increase in population is 10% . Left number of moths for which we have to calculate factor of increase in population is 20-12 = 8. For 1 month , there is 0.84% increase in population ∴ For 8 months , 8 × 0.84 = 6.72 %. 
So , increase in population in every 20 months is 10% + 6.72% = 16.72%.
 
        
             
        
        
        
<u>The probability is </u><u>1/12</u>
The probability of choosing a nickel is 9/18 = 1/2. The probability of choosing a dime is 3/18 (because there are 3 dimes and since there is replacement, we still have 18 total coins to choose). With these, we get: (1/2) * (3/18) = 3/36 = 1/12