Answer:
67 mph
Step-by-step explanation:
A method you'd want to remember is r = d/t, or rate equals distance divided by time.
Since the Morris family drove 368.5 miles in 5.5 hours, you'd divide the distance by 5.5.
(368.5/5.5) = 67 miles per hour.
So their average rate is 67 miles per hour.
Hope this helps.
Answer:
if you mean 8 devided by 5/3 then the answer is 4.8 :)
Step-by-step explanation:
Week one:
36 * 6.70 = $241.20
Week two:
40 * 6.85 = $274
Subtract:
274 - 241.20 = $32.80
Therefore, he made $32.80 more the second week then he did the first week.
Best of Luck!
Answer:
Option D: is the function
Explanation:
Let the general form of quadratic equation be The function passes through the intercepts and and also passes though the point Substituting the points , and in the equation , we get, -----------(1) ----------(2) -----------(3)
Subtracting (1) and (2), we get, -----------(4)
Subtracting (2) and (3), we get, ------------(5)
Multiplying equation (4) by 5 and equation (5) by 4, to cancel the term b when adding, we get,
Thus, the value of a is Substituting in equation (4), we get,
Thus, the value of b is Now, substituting the value of a and b in equation (1), we have,
Thus, the value of c is Now, substituting the value of a,b and c in the general formula , we get,
Taking out the common term as -2 we get,
Factoring , we get,
Thus, the function is
<u>Given</u>:
Probability of student smoke,
P = 27.7%
= 0.277
Number of students,
n = 632
(i)
Here,
Number of students (n) = 60
then,
⇒ 
⇒ 
We can see that 
and 
so the normal approximation condition are met.
Now,
Now,
⇒ 
The Z-score is:
= 
= 
hence,
The probability will be:
⇒ 
or,
⇒ 
(ii)
Here,
Number of students (n) = 75
Now,
⇒ 
The Z-score is:
= 
= 
then, 
hence,
The probability will be:
⇒ 
Learn more about probability here:
brainly.com/question/9825651
