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ibahadurali786oz4gxs
28.01.2020 •
Mathematics
Atank is being filled with water using an old
pump that slows down as it runs. the table below
gives the rate at which the pump pumps at 10
minute intervals. if the tank is initially empty,
estimate how much water is in the tank after 90
minutes.
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Ответ:
Elapsed time (Minutes) 0 10 20 30 40 50 60 70 80 90
Rate (gallons / minute) 42 40 38 35 35 32 28 20 19 10
Because the interval is every 10 minutes, we will use 10 and multiply it to each rate and get the sum total.
42*10 + 40*10 + 38*10 + 35*10 + 35*10 + 32*10 + 28*10 + 20*10 + 19*10 + 10*10
420 + 400 + 380 + 350 + 350 + 320 + 280 + 200 + 190 + 100
2,990
There will be a total of 2,990 gallons in the tank after 90 minutes.
Ответ:
C.
Step-by-step explanation:
2 loaves of bread: 1 1/2 (flour per one loaf) * 2 (amt of loaves) = 3 (total flour used)
15 (total amt of flour) - 3 (flour used to bake bread) = 12 (remaining flour)
12 (remaining flour) / 1/3 (flour per muffin) = 36 (muffins able to be made)