Selma's class is making care packages to give to victims of a natural disaster. Selma packs one box in 5 minutes and has already packed 12 boxes. Her friend Trudy packs one box in 7 minutes and has already packed 18 boxes. How many more minutes does each need to work in order to have backed the same number of boxes?
Answers
Every 35 minutes Selma packs 7 boxes, while Trudy packs 5 boxes.
Thus every 35 minutes Selma decreases the difference between them in 2 boxes.
Since the original difference was 6 boxes, Selma needs 3 times 35 minutes, or 105 minutes, in all, to catch Trudy.
Answer- 105 minutes, or 1 hour and 45 minutes.
Related Questions
Please answer correctly !!!!!!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!
Point P(−4.05, −9.25) is a reflection across the y-axis of which of the following points?(−4.05, 9.25) (−9.25, −4.05) (4.05, −9.25) (9.25, 4.05)
Britt hires a personal trainer for the summer.The trainer charges a $40 sign up fee plus$22.50 per hour. If Britt spends a total of$940 over the summer, how many hours didshe train with the trainer?
Is 15.07 a rational or irrational numbers
Answers
Answer:
at x= 0 and x= 1 and not at x= 3.
Step-by-step explanation:
We have the functions, and
.
It is given that,
At x=0, x=1, and x=3,
i.e.
i.e.
i.e.
i.e. x= 0 and (x-1)= 0
i.e. x= 0 and x= 1.
Also, after plotting the graphs of both the functions, we see their intersection point are (0,1) and (1,3).
Thus, we get that at x= 0 and x= 1 and not at x= 3.
Hurry please!
Answers
70 + 15.4 = $85.40
The total cost is $85.40
Answer:
85.40
Step-by-step explanation: This is because if you do $70*22%, this gives $15.4. Now add this to $70 to get 80.40! So, the total is 80.40.
Answers
Answer:
192
492
Step-by-step explanation:
- aₙ = 10n - 8
- a₂₀ = 10*20 - 8 = 200 - 8 = 192
- a₅₀ = 10*50 - 8 = 500 - 8 = 492
Answers
Answer: B) 6 minutes
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Explanation:
Let's find the slope of the table. This will tell us the rate of change.
m = slope
m = (y2-y1)/(x2-x1)
m = (25250 - 26375)/(2 - 1) .... I used the first two rows
m = -1125/1
m = -1125
The slope of -1125 means the plane's altitude is decreasing at a rate of 1125 feet per minute. This is the descent speed.
Since we're told the initial altitude was 27500 ft, this means b = 27500
This means y = mx+b turns into y = -1125x+27500
x is the number of minutes and y is the altitude at time x
As a way to check this, plug in various x values of the table. You should get corresponding y values that match the table. I'll let you do this part.
------------------
Now plug in y = 16250 and solve for x
y = -1125x+27500
16250 = -1125x+27500
-1125x+27500 = 16250
-1125x = 16250-27500
-1125x = -11250
x = -11250/(-1125)
x = 10
It takes 10 minutes after the descent period has started, for the pilot to get to 16,250 ft.
Since the pilot was contacted at the x = 4 minute mark, this means 10-4 = 6 minutes is the duration needed for the pilot to go from 23,000 ft to 16,250 ft.
Answers
Answer: The number of canned goods in 7th row = 64.
Step-by-step explanation:
The given numbers of canned goods in every row( starting from first ) is represented as
40 , 36, 32, ...
There is a common difference between numbers(d)= 4
∴ Its is an Arithmetic progression.
First term (a) = 40
nth term in A.P. :
7th term in this A.P. = 40+(7-1)(4)=40+(6)(4)=40+24=64
So, the number of canned goods in 7th row = 64.
2/3, 9/16, 0.52
Answers
2/3 = 0.66
9/16 = 0.56 So= 0.52, 9/16, 2/3
0.52