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3 years ago

3.Write the product as a trinomial. (2r – 5)(r + 10)

Mathematics

2 answers:

horrorfan [7]3 years ago

7 0

Use: (a + b)(c + d) = ac + ad + bc + bd

$(2r-5)(r+10)=(2r)(r)+(2r)(10)+(-5)(r)+(-5)(10)=2r^2+20r-5r-50=2r^2+15r-50$

Answer: b. 2r² + 15r - 50

Maurinko [17]3 years ago

5 0

B is the correct answer

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3 years ago

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3 years ago

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nydimaria [60]

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<h3>How to determine the mean and the standard deviation?</h3>

From the complete question, we have:

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The mean is then calculated as:

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The standard deviation is calculated as:

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