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Oxana [17]
3 years ago
15

The circumference of a circle is 9π m. What is the area, in square meters? Express your answer in terms of π π

Mathematics
1 answer:
storchak [24]3 years ago
5 0

Answer:

A = 20.25π sq meters

Step-by-step explanation:

C = 2πr

9π = 2πr

divide π from each side to get:

9 = 2r

r = 9/2 or 4 1/2

A = πr²

A = π (4.5²)

A = 20.25π

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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, gi
defon

Answer:

An ordered pair is a set of inputs and outputs and represents a relationship between the two values. A relation is a set of inputs and outputs, and a function is a relation with one output for each input.

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here is a exstended explantion:

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. I'll give you a relation between them that is not a function, and one that is.

   X = { 1, 2, 3 }

   Y = { a , b , c, d }

   Relation from X to Y (i.e., in XxY ) : { (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. (Note, if you transpose the ordered pairs you <i>would</i> have a function from Y to X - can you see WHY?)

   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.

8 0
3 years ago
Combine the like terms to create an equivalent expression: <br><br>−4p+(−6p)
Y_Kistochka [10]

THE ANSWER IS -10P.

Step-by-step explanation:

USING BY MULTIPLICATION RULE.

minus × plus = minus

then minus × minus = plus.

so we add the 4p+6p= -10p.

why -10p is come it means THE BIGGER NUMBER SIGN IS MINUS. So it's comes -10p.

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7 0
3 years ago
The curved sides of large storage tanks at a refinery need to be painted. What is the approximate area of each tank that will be
Gnesinka [82]
Correct Answer is D. 2,287 ft
3 0
1 year ago
Which statements about the graph of the function f(x) = -x - 4x + 2 are true? Select three options.
stich3 [128]

Answer:

The option "The function has a positive y-intercept" is true because f(0) = 2, which is the y-intercept.

Step-by-step explanation:

5 0
3 years ago
I WILL GIVE YOU BRAINLY PLSS
kramer

Answer:

C, x ≥ 14.96

Step-by-step explanation:

Step 1: Add 3.408 to both sides.

2.2x − 3.408 (+ 3.408) ≥ 29.504 (+ 3.408)

2.2x ≥ 32.912

Step 2: Divide both sides by 2.2.

2.2x (÷ 2.2) ≥ 32.912 (÷ 2.2)

x = 14.96

3 0
3 years ago
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