Answer:
0.173 probability that she gets exactly three questions correct.
Step-by-step explanation:
For each question, there are only two possible outcomes. Either she guesses the correct answer, or she does not. The probability of guessing the correct answer for a question is independent of other questions. So we use the binomial probability distribution 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.
Seven questions:
This means that 
Each question has four choices.
Abby guesses, which means that 
Find the probability to the nearest thousandth, that Abby gets exactly three questions correct.
This is P(X = 3).
Answer:Mercury is 36 million miles (57.9 million Km) from the Sun,
Step-by-step explanation:
490
Step-by-step explanation:
4333333
67
8
Answer:
Simple
Step-by-step explanation:
Remove cables from battery terminals. ...
Remove the screws or fasteners holding the battery in place; then Remove the Battery. ...
Inspect the tray the old battery was resting on. ...
Position your new car battery on the tray. ...
Replace the screws/fasteners to the new battery to secure it in place.
Step 6. Reconnect your battery cables in the reverse order in which you took them off
The product of the expression given above most likely yield a complex number since the expression as well is a complex number. A complex number is a real number, an imaginary number or a number with both real and imaginary number. Its standard form is:
a + bi
<span>( 9 + 5i)( 9 + 8i)
</span>81 + 72i + 45i -40
41 + 117i
