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Harrizon [31]
3 years ago
6

Problem 2 : Using in the pattern in the image below, how many dots would be in Step 4

Mathematics
1 answer:
zimovet [89]3 years ago
7 0

Answer:

20

Step-by-step explanation:

One pattern is that we are adding one row and one column for each step.

The first step has 1 row and 2 columns,

the second one has 2 rows and 3 columns,

and the third has 3 rows and 4 columns.

Thus, it would make sense for the fourth step to have 4 rows and 5 columns. This makes a rectangle with a length and a width, with the area of the rectangle being length * width. 4 * 5 = 20 as our number of dots

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Richard receives a 3.5% commission for selling cleaning supplies. What is his commission on sales of $122,591?
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Answer:

We have to find 3.5% $122,591

So,

122591*3.5/100=4,290.685

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3 years ago
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The most recent poll of 50 randomly-selected members of a school club with a total of 80 members showed that 38 are planning to
melisa1 [442]

Answer with Explanation:

Total number of members in School Club = 80 members

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Number of members who are planning to vote for Talia = 38 members

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Standard Deviation=4.3 (approx)

→95% confidence level for students who are planning to vote for Talia as president of the club lie between → 38 + 4.3 = 42.3 to 38 -4.3=33.7.

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3 years ago
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What is the value of 8 to the 4th power
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Answer:

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An item sells for $30 and is on sale for 15% off and the sales tax is 8.2%. What is the final cost to the nearest cent?
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Answer:

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