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rjkz [21]
3 years ago
12

The first three towers in a sequence are shown. The nth tower is formed by stacking n blocks on top of an n times n square of bl

ocks. How many blocks are in the 99th tower?

Mathematics
1 answer:
erik [133]3 years ago
7 0

Answer:

The 99th tower contains 9900 blocks.

Step-by-step explanation:

From the question given, we were told that the nth tower is formed by stacking n blocks on top of an n times n square of blocks. This implies that the number of blocks in n tower will be:

n + n²

Now let us use the diagram to validate the idea.

Tower 1:

n = 1

Number of blocks = 1 + 1² = 2

Tower 2:

Number of blocks = 2 + 2² = 6

Tower 3:

Number of blocks = 3 + 3² = 12

Using same idea, we can obtain the number of blocks in the 99th tower as follow:

Tower 99:

n = 99

Number of blocks = 99 + 99² = 9900

Therefore, the 99th tower contains 9900 blocks.

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Answer:

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Step-by-step explanation:

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7 0
3 years ago
Winston has just gone grocery shopping. The mean cost for each item in his bag was $2.71. He bought a total of 9 items, and the
sukhopar [10]

The cost of the 9th item is  $3.94

Since the mean cost for the 9 items in his bag was $2.71. Then, the total cost will be: = 9 × $2.71 = $24.39

In order to get the price of the 9th item, we have to calculate the price of all the 8 items given which will be:

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= $24.39 - $20.45

= $3.94

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3 0
3 years ago
Not sure how to do the write in long form.
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5 0
3 years ago
Read 2 more answers
I dont get this at all pls help
saul85 [17]

Answer:

its B i think

7 0
3 years ago
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