Answer:
read the explanation ya bean bag
Step-by-step explanation:
we can set up some equations
lets say that q=one quarter and d=one dime
there are 92 coins so q+d=92
for each quarter, there are 25 cents added towards the 14 dollars
for each dime, there are 10 cents added towards the 14 dollars
14 dollars is equal to 1400 cents
using all this information, we can write the following equation:
25q+10d=1400
we can simplify this to 5q+2d=280
remember that q+d=92, so let's take out the extra dimes: 3q+2(q+d)=280 or 3q+2*92=280 or 3q+184=280 or 3q=96 or q=32
there are 32 quarters, so we can subtract 32 from 92 to figure out how many dimes we have
92-32=60 dimes
.600 + .030 + .002 is another form for that number - this is standard form : )
Answer:
0.5981 = 59.81% probability that three or less of the selected adults have saved nothing for retirement
Step-by-step explanation:
For each adult, there are only two possible outcomes. Either they save nothing for retirement, or they save something. The probability of an adult saving nothing for retirement is independent of any other adult. This means that the binomial probability distribution is used to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
20% of adults in the United States save nothing for retirement (CNBC website).
This means that 
Suppose that sixteen adults in the United States are selected randomly.
This means that 
What is the probability that three or less of the selected adults have saved nothing for retirement?
This is:

In which






0.5981 = 59.81% probability that three or less of the selected adults have saved nothing for retirement
If it is asking if that equation is the quadratic formula, then the answer is false. The reason why is that the first 'b' should be negative
The quadratic formula is
