Answer:
The unit price is $1.19. Her error was that instead of dividing by 4 dozen (48) she just divided by 4.
Step-by-step explanation:
First to calculate the unit price you must divide the total price (57.12) by the amount of pairs they received (4*12= 48). 4 dozen is 48 since there is 12 in a dozen.
57.12/48= 1.19
Thus 1.19 is the unit price.
I hope this helps you
3.5/3. (x+3)
5/x+3
Answer: After 1.7 hours, they will be 1,000 miles apart.
Step-by-step explanation:
Let t represent the time it will take both planes to be 1000 miles apart.
If both planes leave the airport at 10.00am, it means that they would have covered a total distance of 1000 miles after t hours.
Distance = speed × time
If the northbound plane flies at 280 mph, it means that the distance covered in t hours is 280t.
If the southbound plane flies at 320 mph, it means that the distance covered in t hours is 320t.
Since the total distance covered is 1000 miles, then
280t + 320t = 1000
600t = 1000
t = 1000/600
t = 1.7 hours
Answer:
B(3.5, 0.5)
Step-by-step explanation:
Given:
A(5,5), Xa=5, Ya=5
C(3,-1), Xc=3, Yc=-1
To find point B, we can use the partition rule, where AB = 3BC, so AB occupies k=3/4 of the distance AC.
B(x,y) = ((1-k)Xa+kXc, (1-k)Ya+kYc)
=(Xa/4+3Xc/4, Ya/4+3Yc/4), substitute values
=(5/4+3*3/4, 5/4+3*(-1)/4)
=(14/4,2/4)
=(3.5, 0.5)