2 years ago

Find the area 9cm 8cm 13cm 9cm 11cm

Mathematics

1 answer:

Viktor [21]2 years ago

6 0

Answer:

460

Step-by-step explanation: multiply all numbers to get your answer

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Sarah spends a total of $60. Based on the information in the table, how many people attended the craft demonstration?

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Divide 60 by however much people was there to get your answer

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2 years ago

Zuri is stuck in traffic. She notices that she only drove 3 miles in 15 minutes.

makkiz [27]

Answer:

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2 years ago

The scores on a test for a sample of 42 statistics students are summarized in the following table. 9, 90, 18, 80, 15, 70. Find t

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<h3>Answer: 78.6</h3>

Work Shown:

$\begin{array}{|c|c|} \cline{1-2}\text{Number of People} & \text{Score}\\\cline{1-2}9 & 90\\\cline{1-2}18 & 80\\\cline{1-2}15 & 70\\\cline{1-2}\end{array}$

Multiply across the rows to form a third column. Example: 9*90 = 810 in the first row.

$\begin{array}{|c|c|c|} \cline{1-3}\text{Number of People} & \text{Score} & \text{Number*Score}\\\cline{1-3}9 & 90 & 810\\\cline{1-3}18 & 80 & 1440\\\cline{1-3}15 & 70 & 1050\\\cline{1-3}\end{array}$

The values in the third column add to 810+1440+1050 = 3300

Divide this over the total number of people which is 9+18+15 = 42

The mean is 3300/42 =78.571 approximately which rounds to 78.6

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1 year ago