Which rate is greater? 18 pages in 36 minutes or 20 pages in 30 minutes. Explain your resoning

2 answers:

6 0

The second example is a greater rate of reading.

In order to come to that conclusion, I didn't do any figuring, ciphering,
numerating, or calculating of any kind. I just sat there and looked at
the question. I noticed that the second example is more pages than
the first one, but done in less time than the first one. So I know that
it must be a greater rate of cranking out the pages.

Helga [31]3 years ago

5 0

The first rate is 18/36 = 0.5 While the second rate is 20/30 = 0.6666666 So the second rate is greater.

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4. Name the first five terms of the arithmetic sequence. a1 = -35, d=4

eduard

Answer:

Step-by-step explanation:

We first have to write the equation for the sequence, then finding the first five terms will be easy. Follow the formatting:

$a_n=a_1+d(n-1)$ and we are given enough info to fill in:

$a_n=-35+4(n-1)$ and

$a_n=-35+4n-4$ and

$a_n=-39+4n$ or in linear format:

$a_n=4n-39$ where n is the position of the number in the sequence. We already know the first term is -35.

The second term:

$a_2=4(2)-39$ so

$a_2=8-39$ and

$a_2=-31$

The third term:

$a_3=4(3)-39$ and

$a_3=12-39$ so

$a_3=-27$ and we could go on like this forever, but the nice thing about this is when we know the difference all we have to do is add it to each number to get to the next number.