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Mathematics

1 answer:

UkoKoshka [18]3 years ago

3 0

1. irrational
2. irrational
3. rational

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What is the common ratio of the geometric sequence pt.1

MaRussiya [10]

Answer:

The common ratio is -6

Step-by-step explanation:

The given sequence is

$\frac{1}{18},-\frac{1}{3},2,-12,...$

The common ratio can be found using any two consecutive terms of the geometric sequence.

$r=\frac{-12}{2}=-6$

The correct answer is the last choice.

6 0

2 years ago

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What is -4R-2r+5 as a simpler exspression

enyata [817]

$\sf-4R-2r+5$ is already in simplest form.

But if you meant to say $\sf-4r-2r+5$ , we would combine the first two terms.

Adding/subtracting like terms is the same as adding/subtracting whole numbers.

$\sf-4-2=-6$

Therefore:

$\sf-4r-2r=-6r$

Which gives us:

$\boxed{\sf-6r+5}$

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3 years ago

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The area of a rectangle is 45 square inches. One dimension is 5 inches. What is the perimeter

professor190 [17]

Answer:

28 inches

Step-by-step explanation:

To begin, the area of a rectangle is base · height. Since we are given one of the sides already, you can make an equation to solve for the other value.

5 · x = 45

5x = 45

x = 9

A rectangle has two pairs of parallel sides, or in easier terms, two sets of sides that are the same. So, the perimeter is going to be two lengths plus two widths.

2 · 5 + 9 · 2 = 10 + 14 = 28

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1 year ago

Find the cosine of R.

JulijaS [17]

Answer:

$cos(R) = \frac{\sqrt{15}}{5}$