Answer:
Step-by-step explanation: your friend would get 17$
and you would get 21.25
hope this helpsss ;))))
To solve this problem, we make use of the t statistic. So
what we have to do is to calculate for the t score in this case and using the standard
distribution tables, we locate for the p value using the t score value.
The formula for t score is given as:
t = (x – μ) / (σ / sqrt(n))
Where,
x = statistical mean of the sample = 40
n=number of individuals in the sample = 16
s=standard deviation = 20
μ=Population Mean = 30
Substituting the given values:
t = (40 – 30) / (20 / sqrt 16)
t = 10 / 5
t = 2
Using the standard distribution tables at degrees of
freedom = n – 1 = 15, the value of p to the right is:
p = 0.032
Since quadratic coefient is 1 (term in front of x^2)
take 1/2 of linear cofient (12) and square it
12/2=6, 6^2=36
add that to both sides
x^2+12x+36=-11+36
factor perfect square
(x+6)^2=25
sqrt both sides and take positiv and negative roots
x+6=+/-5
minus 6 both sides
x=-6+/-5
x=-6+5 or x=-6-5
x=-1 or -11
answer is {-11,-1}
Answer:
cycle=33 students, driven=132 students, walk=55 students
Step-by-step explanation:
<h2>solution</h2><h2>60+15+x=100 to get the remaining percentage</h2><h2>x=25</h2><h2>15÷100×220=33</h2><h2>60÷100×220=132</h2><h2>25÷100×220=55</h2>
The correct answer is 40 bars.
In order to find this amount we have to find when the y values are worth the same. Since both equations are equal to y, we can set them equal to each other to find a time when the y values are the same.
Company A = Company B
.75x = 10 + .50x ---> Now subtract .50x from both sides.
.25x = 10 ---> Now divide both sides by .25
x = 40
When x = 40 it will cost $30 from both companies.
