Answer:
hello,
Step-by-step explanation:
a)
p(fail)=0.05
p(not fail)=1-0.05=0.95
b)
p(3 fails)=0.05³=0,000125
c)
p(1 or more system not fail)=1-0.05³=0.999875
d)
it increase the security.( here 4/100 for 3 systems)
Answer:
.52
Step-by-step explanation:
We can write an equation
supports/all
we can see that 27 males and 25 females support which means that
27+25= 52 total people support
now we just need to find the number of people surveyed
we do this by summing everything
27+25+18+13+5+12=100
52/100 = .52
I'm pretty sure the answer is 4 because, 4*21= 84.
What is the slope of y = - x + 7







m= (-1)
which is equal to the slope of the equation .

Answer:
(-6,4)
Step-by-step explanation:
The equations are:

Solving for x^2 of the 2nd equation and putting that in place of x^2 in the 2nd equation we have:

Now we can solve for y:

So plugging in y = 4 into an equation and solving for x, we have:

So y = 4 corresponds to x = 6 & x = -6
The pairs would be
(6,4) & (-6,4)
<u><em>we see that (-6,4) falls in the 2nd quadrant, thus this is the solution we are looking for.</em></u>