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Luda [366]
3 years ago
7

Classify each of the following as rational or irrational:

Mathematics
1 answer:
Gemiola [76]3 years ago
7 0

Answer:

Rational:-5, 2/3, 0.5, sqrt 16

Irrational: sqrt 11, pi

Step-by-step explanation:

A rational number is a number which can be represented as a ratio or fraction and whose decimal is terminating or repeating. This includes all whole numbers positive and negative too.

Ex. -5, 2/3, 0.5, sqrt 16

An irrational number is a number that CANNOT be represented as a ratio or fraction and whose decimal is NOT terminating or repeating. These often include square roots and numbers like pi.

Ex. sqrt 11, pi

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Tom had 260 dollars to spend on 8 books. After buying them he had 12 dollars. How many much did each book cost?
fgiga [73]
You will subtract 12 from 260 and get 248 then you will divide 248 by 8 and get 31 dollars spent per book.
7 0
3 years ago
URGENT! if ABCD is dilated by a factor of 2, the coordinate of A' would be:
koban [17]

After dilating the quadrilateral ABCD by a factor of 2 and with respect to the origin, the point A(x, y) = (-3, -1) is transformed into the point A'(x, y) = (-9, -3).

<h3>How to determine the coordinates of an image after applying a rigid transformation</h3>

First of all, dilation is a type of <em>rigid</em> transformation. <em>Rigid</em> transformations are transformations applied on <em>geometric</em> loci such that the <em>Euclidean</em> distance at every point of the construction is conserved. Vectorially speaking, the dilation is expressed by the following formula:

A'(x, y) = A(x, y) + k · [A(x, y) - O(x, y)]     (1)

Where:

  • A(x, y) - Original point
  • O(x, y) - Center of dilation
  • A'(x, y) - Resulting point
  • k - Dilation factor

If we know that A(x, y) = (-3, -1), k = 2 and O(x, y) = (0, 0), then the coordinates of A' are:

A'(x, y) = (-3, -1) + 2 · [(-3, -1) - (0, 0)]

A'(x, y) = (-3, -1) + (-6, -2)

A'(x, y) = (-9, -3)

After dilating the quadrilateral ABCD by a factor of 2 and with respect to the origin, the point A(x, y) = (-3, -1) is transformed into the point A'(x, y) = (-9, -3).

To learn more on dilations: brainly.com/question/13176891

#SPJ1

4 0
2 years ago
X=3 and y=4<br>whats the answer to this?<br><img src="https://tex.z-dn.net/?f=6%282x%20%2B%205y%29" id="TexFormula1" title="6(2x
IgorLugansk [536]
6(2x + 5y)
6[2(3) + 5(4)]
6[6 + 20]
6(26)
156

The answer is 156

Hope this helps :)
4 0
3 years ago
Solve for t.
Alona [7]

Answer:

T = 4

i think

but my original answer is  t = 1/3 = 0.333

4 0
2 years ago
Read 2 more answers
a yard is equal in length to three feet the function F(y) takes a measurement in yards (as input) and returns a measurement in f
serg [7]
<span>First let us answer it as if the input is 12. Then the output is 36. F(12)=36 If the input is 13, then the output is 39. F(13)=39 So we know the answer is between 36 and 39 The output of 12.5 is the same as the output of 12 plus the output of .5 F(12.5) =F(12) + F(.5) = 36 + 1.5 =37.5 So the question is really what is the output of .2 F(12.2) = …<span>The same as Y=3X with X being the input.</span></span>
5 0
3 years ago
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