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gregori [183]
3 years ago
12

What is a rational number

Mathematics
1 answer:
Readme [11.4K]3 years ago
7 0

Rational numbers are a giant group of numbers in mathematics. Basically, rational numbers are all numbers that can be written as a fraction. The set of rational numbers includes many subsets of numbers which are provided in the image.

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velikii [3]

Answer:

Area is about 93.53

Step-by-step explanation:

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3 years ago
Graph the piecewise function on the blank coordinate plane below. Please explain this to me step by step I don't fully understan
Damm [24]
The definition just says that the graph is not all the same function.
It's pieces of two different functions ... the function changes at the
line  x = -1 .  The graph looks something like the attached picture.

The function on the left side is     y = x .
That's the graph starting from 10 miles left of the graph, and
all the way up to  x = -1 .  Surely you know how to draw   y = x .

At  x = -1, it changes to the other function.

The function on the right side is    y = -x .
That's the graph starting from  x = -1  and all the way out to
10 miles away on the right, or farther. 
Surely you know how to draw   y = -x .

That's all there is to it.  Different functions on different parts of the plane.
And as you can see on the attached picture, there's no guarantee that
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they don't.  It just depends on how they're defined. 

Like, if the right-side function had been    y = -x - 2 , then the two pieces
would meet, and the whole graph would look like a big upside-down
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6 0
3 years ago
Write down the exact value of:<br> a) cos 90 <br> b) sin 90<br> c) tan 0
viktelen [127]

Answer:

The exact value of

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3 0
3 years ago
Read 2 more answers
Can someone please help me solve this?​
mezya [45]
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4 0
3 years ago
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Roberto decorates retangular signs. One sign is 2/3 foot long and 1/4 foot wide. Another sign is 1/2 long and 1/3 foot wide. It
PilotLPTM [1.2K]

Answer:

It'll take him 1/4 hours to decorate the two signs.

Step-by-step explanation:

In order to know how long Roberto will take to decorate all the signs we need to find their surface area, since they're rectangular their area is given by the product of their dimensions.

First sign:

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Second sign:

area2 = (1/2)*(1/3) = 1/6 foot²

The total area he has to paint is the sum of their individual areas, so we have:

total area = area1 + area2 = 1/6 + 1/6 = 2/6 = 1/3 foot²

To find out how long he'll take to decorate this area we can use a rule of three as shown bellow:

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3 0
3 years ago
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