Add.3/2a+5/2a PLease help!

Mathematics

2 answers:

Anvisha [2.4K]3 years ago

5 0

The expression 4/a your welcome

Wittaler [7]3 years ago

4 0

The answer should be 4a

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A parabolic listening device is shaped such that the depth of the bowl depends on its radius and can be represented by the curve

Rus_ich [418]

Answer:

7.428 inches

Step-by-step explanation:

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3 years ago

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Is a relation always a function? Is a function always a relation? Explain.

katen-ka-za [31]

A function is always a relation but relation is not always a function

<u>Solution:</u>

Given that, we have to explain Is a relation always a function and is a function always a relation

Note that both functions and relations are defined as sets of lists.

In fact, every function is a relation. However, not every relation is a function. A relation from a set X to a set Y is called a function if each element of X is related to exactly one element in Y.

That is, given an element x in X, there is only one element in Y that x is related to.

For example, consider the following sets X and Y. Let me give you a relation between them that is not a function;

X = { 1, 2, 3 }

Y = { a , b , c, d }

Relation from X to Y : { (1,a) , (2, b) , (2, c) , (3, d) }

This relation is not a function from X to Y because the element 2 in X is related to two different elements, b and c

Relation from X to Y that is a function: { (1,d) , (2,d) , (3, a) }

This is a function since each element from X is related to only one element in Y. Note that it is okay for two different elements in X to be related to the same element in Y. It's still a function, it's just not a one-to-one function.

So, we can say that function is a type of relation.

Which means whatever a function occurs, it will be a relation from one set to other.

But when a relation occurs it may be a function but need not be always a function.

Hence, a function is always a relation but relation is not always a function.

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3 years ago

What two parts of a regular polygon are congruent?

scoray [572]

I guess sides and angles !

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4 years ago

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