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weeeeeb [17]
3 years ago
6

Dimitrus returned 5 library books last week, returned 3 books this week,and then checked out 8 more books.He now has 12 library

books.How many books did he have before last week
Mathematics
1 answer:
olganol [36]3 years ago
5 0
Well the answer is 15 because 5+3+8 is equal to 15 so I'm guessing he had 15 books before last week . if not search it up or look into a different answer for this problem.
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A regional soccer tournament has 64 participating teams. In the first round of the tournament, 32 games are played. In each succ
Alona [7]

Answer:

A regional soccer tournament has 64 participating teams.

In the first round of the tournament, 32 games are played.

In each successive round, the number of games played decreases by 1/2.

Part A:

We know;

a_n=a_1\times r^{n-1}

a_1=32

r=\frac{-1}{2}

So, we get;

The rule for the number of games played in the nth round is given by:

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Part B:

As in each successive round the rounds are decreasing by 1/2 we have.

round 1 = 32

round 2 = 16

round 3 = 8

round 4 = 4

round 5 = 2

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3 years ago
Question 5(Multiple Choice Worth 7 points)
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Answer:

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a.

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b.

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c.

The explicit rule can be written as:

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Where an is the nth term, a1 is the first term and q is the ratio. So:

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(5b^3 +9b+4)−(9b−4) Subtract. standard form
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Answer:

the answer is 5b^3+8

Step-by-step explanation:

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