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elena-s [515]
3 years ago
9

An example of an irrational number is ___.

Mathematics
2 answers:
STALIN [3.7K]3 years ago
7 0
The right answer is √47

all the others are perfect squares
Sophie [7]3 years ago
6 0

sqrt (16) = 4

sqrt(25) = 5

sqrt (36) =6

sqrt(47) = irrational number

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Which of the following functions best represents the graph?
marshall27 [118]

Answer:

f(x)=x^3+x^2-4x-4

Step-by-step explanation:

From the graph, the x-intercepts are;

x=-2

x=-1

x=2

These are root of the polynomial function represented by the given graph.

By the remainder theorem;

f(-2)=0,f(-1)=0,f(2)=0

According to the factor theorem, if (x-a) is a factor of f(x), then f(a)=0

This implies that;

(x+2),(x+1),(x-2) are factors of the required function.

Hence; f(x)=(x+1)(x-2)(x+2)

We expand using difference of two squares to obtain;

f(x)=(x+1)(x^2-4)

We expand using the distributive property to get;

f(x)=x^3-4x+x^2-4

Rewrite in standard form to obtain;

f(x)=x^3+x^2-4x-4

6 0
3 years ago
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Which of the following ratios is equivalent to the
VashaNatasha [74]
The answer to this should be B since 24/42 is 1/2
4 0
3 years ago
Thom earns $12.40 per hour at the
kogti [31]

Answer:

$3,645.6

Step-by-step explanation:

1hr=$12.4

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3 years ago
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Answer:

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2 years ago
a rectangle is 4 times as long as it wide. if the length is increased by 4 inches and the width is decreased by 1 inch, the area
Mekhanik [1.2K]
x-\ width\\
y-\ length\\
4x=y\\
(y+4)(x-1)=60\\
(4x+4)(x-1)=60\\
4x^2-4x+4x+4=60\ \  | subtract\ 4\\
4x^2=56\ \ | divide\ by\ 4\\
x^2=14\\
x=\sqrt{14}\\
y=4\sqrt{14}\\\\
Dimensions:\ width=\sqrt{14}in,\ length=4\sqrt{14}in.
6 0
4 years ago
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