Please help asap 20 pts

Mathematics

1 answer:

makkiz [27]3 years ago

3 0

Answer:

Step-by-step explanation:

For it to be parallel, the lines must have the same slope. So A and C are out. Basic math reveals that if you plug in (1, 8) for <em>(x, y)</em> you find B to be true.

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Select all possible values for x that solve the equation x^2=800

Gemiola [76]

x^2 = 800. Take the square root of each side.

x = √(800) and -√(800)

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3 years ago

Find the average rate of change, in people per year, for the population between the years 1900 and 1920.

elena-s [515]

Step-by-step explanation:

the average change rate of a function f(x) in an interval [x1 .. x2] is

(f(x2) - f(x1)) / (x2 - x1)

in our case that is

(7000 - 2500) / (20 - 0) = 4500 / 20 = 225

the population changed in average by 225 people per year from 1900 to 1920.

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2 years ago

Which of the following is not a step in creating a debt payment plan?

bonufazy [111]

Answer: b. Consolidate all credit cards onto a single card with a single interest rate.

Step-by-step explanation: Steps a, c and d are in correct order. First, we have to arrange our debts in order of paying them off. Second, we need to determine how much extra money we have each month that can be contributed to debt payment. And finally, we need to track our progress of paying debt. So, option b is not included in the steps.

Thus, the correct option is b. Consolidate all credit cards onto a single card with a single interest rate.

4 0

3 years ago

Read 2 more answers

Emily reads a story book. o the first day, she reads 1/9 of the whole book, and on the second day, she reads 24 pages. The ratio

Marina86 [1]

There are 270 pages in this book.

Given that,

Emily reads a storybook the first day,

She reads 1/9 of the whole book, and on the second day, she reads 24 pages.

The ratio of the number of pages read to the remaining pages in the two days is 1:4.

We have to find

How many pages are there in this book?

According to the question,

Let, P is the number of pages,

The first day Emily reads p/9 pages of the whole book,

And the second day she read 24 pages.

The ratio of the number of pages read to the remaining pages in the two days = 1;4 = p/5.

Therefore,

The number of pages reads first day + the number of pages read the second day = The ratio of the number of pages read to the remaining pages in the two days

$\rm \dfrac{p}{9} + 24 = \dfrac{p}{5}\\\\ \dfrac{p}{5} - \dfrac{p}{9} = 24\\\\\dfrac{p \times 9 - p\times 5}{45} = 24\\\\ \dfrac{9p-5p}{45} = 24\\\\\dfrac{4p}{45} = 24\\\\4p = 24\times 45\\\\4p = 1080\\\\p = \dfrac{1080}{4}\\\\p = 270 \ pages$