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Nady [450]
3 years ago
9

Round 21,000 to the nearest 10,000

Mathematics
2 answers:
Arte-miy333 [17]3 years ago
8 0

It would be 20,000. Like rounding 21 to the nearest 10, it is nearer to the lower ten (20) than the higher ten (30).

kolezko [41]3 years ago
5 0
The answer will be 20,000
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A boat travels at a constant speed. After 20 minutes, the boat has traveled 2.5 miles. The boat travels a total of 10 miles to a
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In order to find the speed at which the boat is traveling, we divide the distance it has traveled by the time elapsed:

2.5/20=0.125 miles/minute

Next, we want to find how long it took for the boat to travel 10 miles. Since it travels 0.125 miles every minute, we just divide:

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A deposit of 5500 at 6% for 3 years equals
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Identify the hyperbolas (represented by equations) whose centers are at (2, 1)
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3 years ago
Sum of 1+3+5+7+...+997
PilotLPTM [1.2K]
1 + 3 + 5 + 7 + ... + 997

1, 3, 7, ... , 997 are terms of an arithmetic sequence

a_1=1;\ a_2=3;\ ...;\ a_n=997\\\\d=a_2-a_1\to d=3-1=2\\\\a_n=a_1+(n-1)d\\\\subtitute\\\\997=1+(n-1)\cdot2\\977=1+2n-2\\977=2n-1\ \ \ \ |add\ 1\ to\ both\ sides\\2n=998\ \ \ \ |divide\ both\ sides\ by\ 2\\n=499\\\\S_n=\dfrac{a_1+a_n}{2}\cdot n\\\\subtitute:\ a_1=1;\ a_n=997;\ n=499\\\\S_{499}=\dfrac{1+997}{2}\cdot499=\dfrac{998}{2}\cdot499=499\cdot499=249,001

Answer: 1 + 3 + 5 + 7 + ... + 997 = 249,001.
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3 years ago
Mark has $500 in his savings account. If he saves $25 each month, how many months will it take him to have $1000.
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Answer: 20, I believe

Step-by-step explanation: You already have 500 which is half of 1000. 500 divided by 25 equals 20.

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3 years ago
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