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Crazy boy [7]
3 years ago
9

In an arithmetic sequence, the 10th term is 37, and the 21st term is 4. Find the common difference and the first term

Mathematics
1 answer:
Masja [62]3 years ago
3 0

Answer:

Common difference is 3. And the first term is 64.

Step-by-step explanation:

The differnce between 21 and 10 is 11. So there are 11 unknown numbers in between.  And the difference between 37 and 4 is 33. 33/11 is equal to 3. So the pattern is minus three. the first term is 9 terms before 37. 9 times 3 is 27. 37+27 is equal to 64. so the first term is 64

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the ratio of strawberry to banana batter is 2:3. we need 30 cups of batter total. what percent of the cake batter is banana
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A couple of college students frustrated with the current class registration process decide to survey 500 random students on camp
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8 0
3 years ago
What is the first step that should be used to solve the equation?<br> 12.5n=200
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5 0
3 years ago
Write a formula that will yield the nth term of the sequence: 3,-2,-7,-12
RUDIKE [14]

Answer:

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Step-by-step explanation:

<u>1. What is the difference?</u>

  The sequence goes down by 5. This means that the formula will have -5n in it.

<u>2. Work out the term before the first term.</u>

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3 + 5 = 8   Remember, this is positive 8. (+8)

<u>3. Put that term at the end of the equation. </u>

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-5n + 8  This is our answer!

Just to prove it works:

<em>Substitute:   n = term</em>

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See, it works!

8 0
3 years ago
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