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3 years ago

Which relation is not a function?

Mathematics

2 answers:

madam [21]3 years ago

4 0

Answer: UPC

Step-by-step explanation: I did on USA test prep

egoroff_w [7]3 years ago

3 0

Answer:

Step-by-step explanation:

Input: price of an item; Output: UPC code

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One way to prove this quadrilateral is a square is by calculating the slopes of its sides and the slopes of its diagonals.

tatuchka [14]

Answer:

Step-by-step explanation:

<h3>To prove quadrilateral is a square:</h3>

a) Slope of CB

C(-3,-1) ; B = (0,3)

$\sf \boxed{Slope = \dfrac{y_2-y_1}{x_2-x_1}}$

$\sf = \dfrac{3-[-1]}{0-[-3]}\\\\ =\dfrac{3+1}{0+3}\\\\ = \dfrac{4}{3}$

$\sf \text{\bf slope of CB = $\dfrac{4}{3}$}$

b) D(1,-4) ; A(4,0)

$Slope \ of \ DA = \dfrac{0-[-4]}{4-1}\\$

$= \dfrac{0+4}{3}\\\$

$\sf \text{\bf Slope of DA = $\dfrac{4}{3}$}$

Slope of CB = slope of DA

c) C(-3,-1) ; D(1 , -4)

$\sf Slope \ of \ CD =\dfrac{-4-[-1]}{1-[-3]}$

$\sf = \dfrac{-4+1}{1+3}\\\\ = \dfrac{-3}{4}\\$

$\sf Slope \ of \ CD * Slope of CB = \dfrac{-3}{4}*\dfrac{4}{3}=-1$

So, CD is perpendicular to CB

d) B(0,3) ; D(1,-4)

$Slope \ of \ BD = \dfrac{-4-3}{1-0}\\\\=\dfrac{-7}{1}\\\\=-7$

e) C(-3,-1) ; A(4,0)

$\sf Slope \ of \ CA = \dfrac{0-[-1]}{4-[-3]}\\$

$=\dfrac{0+1}{4+3}\\\\=\dfrac{1}{7}$

$\text{Slope of CA *Slope of BD = $\dfrac{1}{7}$*(-7)}=-1$

So, CA is perpendicular to BD

$\sf \text{\bf Slope of DA = \dfrac{4}{3}}$

5 0

2 years ago

There are 6 blue marbles, 4 red marbles, 7 green marbles, and 3 yellow marbles in a bag. Find the probability of choosing a blue

Ludmilka [50]

Answer:

70%

Step-by-step explanation:

If you add the marbles together you will have 20 marbles.

The probability of choosing a marble that not blue is 14/20

If you converted that into a percent it would be 70%

Hope this is helpful

- Please mark brainliest :)

3 0

3 years ago

What is the length of AB?

avanturin [10]

Answer:

Step-by-step explanation:

AB²=8²+6²

=64+36

=100

AB=10

4 0

3 years ago

Read 2 more answers

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Mkey [24]

Answer:

Step-by-step explanation:

3 0

3 years ago

In a sale there is 30% off a pair of jeans. The sale price is £56. What was the price before the sale ?

myrzilka [38]

(1+0.30)=1.30
56 (1.3) = 72.80

The price of the pair jeans before the sale was $72.80

6 0

3 years ago