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3 years ago

Which relation is a function

Mathematics

1 answer:

8090 [49]3 years ago

5 0

Answer:

The one that is on the left at the bottom

Step-by-step explanation:

because a function is a 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.

Which means you can but a line through the middle or the dots and it will the same count amount of dots on both sides.

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A square and a circle intersect so that each side of the square contains a chord of the circle equal in length to the radius of

krek1111 [17]

Answer:

Step-by-step explanation:

it is given that Square contains a chord of of the circle equal to the radius thus from diagram

$QR=chord =radius =R$

If Chord is equal to radius then triangle PQR is an equilateral Triangle

Thus $QO=\frac{R}{2}=RO$

In triangle PQO applying Pythagoras theorem

$(PQ)^2=(PO)^2+(QO)^2$

$PO=\sqrt{(PQ)^2-(QO)^2}$

$PO=\sqrt{R^2-\frac{R^2}{4}}$

$PO=\frac{\sqrt{3}}{2}R$

Thus length of Side of square $=2PO=\sqrt{3}R$

Area of square $=(\sqrt{3}R)^2=3R^2$

Area of Circle $=\pi R^2$

Ratio of square to the circle $=\frac{3R^2}{\pi R^2}=\frac{3}{\pi }$

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3 years ago

alaska has a land area of about 1,700,000 square kliometers. florida has a land area .1 the size of alaska. what is the land are

kherson [118]

Given:
land area of Alaska: 1,700,000 square kilometers
land area of Florida: 0.10 of Alaska

To find the land area of Florida, we multiply its decimal to the land area of Alaska

1,700,000 sq. km * 0.10 = 170,000 square kilometers.

The land area of Florida is 170,000 square kilometers. It is equal to 0.10 or 10% of the land area of Alaska.<span />

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3 years ago

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9 × 15 = ( 9 × 9 ) + ( 9 × _ ) = _ using distributive property

sineoko [7]

9 x 15 = ( 9 x 9) + (9 x 15)

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Researcher Sandy Beach found a correlation coefficient of +2.3 between variables X and Y. She is thrilled because that correlati

tia_tia [17]

Correlation coefficient is always between -1 and +1. So it cannot be +2.3