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9966 [12]
3 years ago
9

The domain of a sequence can include decimals and irrational numbers.

Mathematics
1 answer:
Aloiza [94]3 years ago
5 0

No, that's not true.  The input variable of a sequence is called the index, which is a counter, such as 1, 2, 3, 4, ...   Note that all of these counters are positive integers.  Normallly I use index i = 1 to denote the first term of a sequence, i = 2 the second term, and so on.

Decimals and irrational numbers are completely unsuitable for serving as such counters.

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Please help solve algebra question
Ksenya-84 [330]
Let be:Speed of the wind: WSpeed of the plane in still air: P
Against the wind the plane flew:Distance: d=175 milesTime: ta=1 hour 10 minutesta=1 hour (10 minutes)*(1 hour/60 minutes)ta=1 hour + 1/6 hourta=(6+1)/6 hourta=7/6 hourSpeed against the wind: Sa=d/taSa=(175 miles) / (7/6 hour)Sa=175*(6/7) miles/hourSa=1,050/7 miles per hourSa=150 mph
(1) P-W=Sa(1) P-W=150
The return trip only took 50 minutesDistance: d=175 milesTime: tr=50 minutestr=(50 minutes)*(1 hour/60 minutes)tr=5/6 hour
Speed retur trip: Sr=d/trSr=(175 miles) / (5/6 hour)Sr=175*(6/5) miles/hourSr=1,050/5 miles per hourSr=210 mph
(2) P+W=Sr(2) P+W=210
We have a system of 2 equations and 2 unknows:(1) P-W=150(2) P+W=210
Adding the equations:P-W+P+W=150+2102P=360Solving for P:2P/2=360/2P=180
Replacing P by 180 in equation (2):(2) P+W=210180+W=210
Solving for W:180+W-180=210-180W=30
Answers:The speed of the plane in still air was 180 mphThe speed of the wind was 30 mph
8 0
3 years ago
Graph a line that contains the point (−6,1) and has a slope of 5
Alexus [3.1K]

Answer:

y=5x+31

Plot points at: (-4,11), (-6,1), (-3, 16)

Step-by-step explanation:

y-1=5(x+6)

y-1=5x+30

y=5x+31

4 0
3 years ago
Colin always takes his laundry to the laundromat for cleaning. Today, he has 5 items for dry cleaning and 12 items for regular w
kari74 [83]

Answer: 7 1/2 pounds

Step-by-step explanation:

7 0
2 years ago
Which could be the running speed of a human in meters per second?
kvv77 [185]
1 x 10. It is unlikely that someone will run 103 meters in a second, along with 1010.
5 0
3 years ago
Please help me!!!!!!!
Mila [183]

Answer:

I not sure this 76.5

Step-by-step explanation:

9cmx17cm=156/2=76.5

Then 76.5/2= 39

I hope this helpful for you.... Sorry....

5 0
3 years ago
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