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damaskus [11]
3 years ago
13

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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Answer:

18.189 rows

Step-by-step explanation:

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Hope this helps!

5 0
3 years ago
The graph shows the high temperatures on july 4th over a 15 year period plz look at graph will give brainliest
jeka57 [31]
Well there are 8 years that show over 90°. Using those statistics you can show that as 8/15 for a probability.
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3 years ago
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Philip ran out of time while taking a multiple-choice test and plans to guess the last 4 questions. Each question has 5 possible
White raven [17]

Using the binomial distribution, it is found that there is a 0.4096 = 40.96% probability that he answers exactly 1 question correctly in the last 4 questions.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

Considering that there are 4 questions, and each has 5 choices, the parameters are given as follows:

n = 4, p = 1/5 = 0.2.

The probability that he answers exactly 1 question correctly in the last 4 questions is P(X = 1), hence:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{4,1}.(0.2)^{1}.(0.8)^{3} = 0.4096

0.4096 = 40.96% probability that he answers exactly 1 question correctly in the last 4 questions.

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

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2 years ago
Please refer the attached photo and help as its important
DedPeter [7]

Answer:

A

Step-by-step explanation:

The perimeter is more since the shape gained many new sides but the area is less because the rectangle lost a little square

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Citrus2011 [14]

A Binomial is a Polynomial with two terms:

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1 year ago
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