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Naddik [55]
3 years ago
13

Here is a list of spelling-test results.Calculate the mean.14,19,19,20,16,18,15,17,12

Mathematics
1 answer:
makvit [3.9K]3 years ago
4 0

To find the mean (average), we first need to add up all the test scores (14 + 19 + 19 + 20 + 16 + 18 + 15 + 17 + 12 = 150). Then, we need to divide that number (150) by the number of numbers in the data set (9 in this case). So the mean of these test scores is about 16.6666666667.

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Help ASAP! Explain the process please
Len [333]

Answer:

B. 650 Roast Beef, 490 Tuna, 900 Turkey

Step-by-step explanation:

As this chart displays the order that occured in one week, in order to find the estimate for the month is to multiply the values on the chart by how many weeks there are in a month.

As there are 4 weeks in a months, we can multiply each value by this ratio

Roast Beef: 4*152=608

Tuna: 4*114=456

Turkey: 4*209=836

As this is an estimate, we are looking for the option that is the closest to these estimated values.

Option B is the closest to these values.

4 0
3 years ago
If A=30° and B=60°,show that sinc(A+B)= sinA . cos60°.sin 30°​
notka56 [123]

Answer:

Lol .... I don't know the answer :D :P

Step-by-step explanation:

L.H.S x 0 = 0

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7 0
3 years ago
Rosalinda is drawing a picture for her mom. She has a box of
trasher [3.6K]

Answer:

4 crayons

Step-by-step explanation:

The box has 8 crayons, 8 times 1/2 is 4. The other way is dividing. 8/2 is also 4.

She will use 4 crayons.

8 0
3 years ago
You want to buy birthday hats, cards, and teddy bears for your best friends birthday party. You buy the products for wholesale p
Naya [18.7K]

Answer:

I will create a five by four matrix to indicate the costs of the products.  The matrix will have five vertical columns and four horizontal rolls.  The vertical columns will show the product categories and the total costs for all the products and decorations.  The horizontal rolls will show the product costs, the decoration costs, and the total costs for each product category.

The size and shape of the matrix will be 5 by 4 with squared boxes.

Step-by-step explanation:

Products/Costs         Hats         Cards      Teddy    Total Costs

Product costs           $2.50       $0.90       $3.10        $6.50

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Total costs               $4.00        $1.50       $4.80       $10.30

6 0
3 years ago
(-2) + 4 = 4 + (-2)
Nataly_w [17]
It's D the comunicative property of addition
8 0
3 years ago
Read 2 more answers
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