Answer:
There is a 24.3% probability that one of the calculators will be defective.
Step-by-step explanation:
For each calculator, there are only two possible outcomes. Either it is defective, or it is not. So we use the binomial probability distribution to solve this problem.
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.
The probability of a defective calculator is 10 percent.
This means that 
If 3 calculators are selected at random, what is the probability that one of the calculators will be defective
This is P(X = 1) when n = 3. So
There is a 24.3% probability that one of the calculators will be defective.
Answer:
42
Step-by-step explanation:
(1 + 6) × 12 ÷ 2 = 42
area of a trapezoid:
Answer:
I need to know the price of the car before I can add the sales tax.
However, to get the answer you take the purchase price x .06 and once you get that you add that answer to the purchase price to get the total price.
Step-by-step explanation:
Answer:
28.7092
Step-by-step explanation:
2.5892 + 23.5600 = 26.1492
26.1492 = 28.7092
Answer:
y + 1 = 5(x - 10)
Step-by-step explanation:
the equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the t-intercept )
rearrange x + 5y = 5 into this form ( subtract x from both sides )
5y = - x + 5 ( divide all terms by 5 )
y = - 
x + 1 ← in slope- intercept form
with slope m = -
given a line with slope m then the slope of a line perpendicular to it is
= - 
= - 
= 5
using m = 5 and (a, b) = (10, - 1), then
y + 1 = 5(x - 10) ← in point- slope form
