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Alexeev081 [22]
3 years ago
13

Find the sum of the first 69 terms of the arithmetic sequence.

Mathematics
1 answer:
BartSMP [9]3 years ago
7 0

Answer:

66.4637681159

Step-by-step explanation:

add the 69 numbers and divide by 69 for how many terms there are

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Step-by-step explanation:

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Andre and Morgan are both headed to Florida for vacation. Andre will drive 70 miles per hour. Morgan will drive 55 miles per hou
babymother [125]

Answer:

The number of hours Moran wold have driven before Andre catches up with him is 14 hours

Step-by-step explanation:

The given information are;

The speed with which Andre will drive = 70 miles per hour

The speed with which Morgan will drive = 55 miles per hour

The time of departure of Morgan = 3 hours before Andre departs

Let the time at which Andre catches up with Morgan be, t

We have, from the definition of distance traveled;

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The distance Morgan would have driven in t hours = 55 × t

Given that to catch up with Morgan, Andre has to travel the same distance, and that Andre starts 3 hours late, we have;

The distance Andre would  drive when Morgan has driven for t hours = 70 × (t - 3)

Therefore, since the distance at the point they meet is the same distance for them both, we have;

55 × t = 70 × (t - 3)

55 × t = 70 × t - 210

210 = 70 × t - 55 × t  = 15 × t

t = 210/15 = 14 hours

Therefore, Morgan would have driven for 14 hours before Andre catches uo with him.

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3 years ago
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MAXImum [283]

Answer: I got 32

Step-by-step explanation:

I got 32

8 0
3 years ago
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