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3 years ago

Which set of ordered pairs does not represent a function?

Mathematics

1 answer:

astra-53 [7]3 years ago

4 0

Answer:

{(-8,-8), (9, 9),(4,5), (4,0)}

Step-by-step explanation:

A relation that is a function does not have any repeating x-values.

A function has one input assigned to exactly one output.

The x-value of 4 repeats in the top set:

{(-8,-8), (9, 9),(4,5), (4,0)}

Therefore, the set is not a function.

Brainilest Appreciated.

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What is -7x+2y=-23 y=-8x+23

Zielflug [23.3K]

Steps:I will try to solve your system of equations.
y=−8x+23;−7x+2y=−23
Step: Solve y=−8x+23 for y: Step:
Substitute−8x+23 for y in −7x+2y=−23:
−7x+2y=−23−7x+2(−8x+23)=−23−23x+46=−23(Simplify both sides of the equation)−23x+46+−46=−23+−46(Add -46 to both sides)−23x=−69−23x−23=−69−23(Divide both sides by -23)x=3Step: Substitute 3 for x in y=−8x+23:y=−8x+23y=(−8)(3)+23y=−1(Simplify both sides of the equation)
Answer:y=−1 and x=3

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3 years ago

Find the equation, in standard form, of the linebpasing through the points (5,1) and (-2,3).

svet-max [94.6K]

Step-by-step explanation:

=(y-y1)=Y2-Y1/X2-X1(X-X1)

6 0

3 years ago

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the cost of using broadband in a hotel is £30 per hour formula to work out this total this total cost is cost in pounds = 3× num

adoni [48]

Answer:

Step-by-step explanation:

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3 years ago

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Mai is visiting Paris to see the Eiffel Tower. She is 80 feet away

Jlenok [28]

Answer: height of the tower is 1064 feet

Step-by-step explanation:

We want to determine the height of the tower.

Assuming her line of sight of the top of the tower is a straight line, then a right angle triangle is formed. The height, h of the tower represents the opposite side of the triangle. Her distance from the foot of the tower represents the adjacent side of the triangle.

To determine h, we would apply the tangent trigonometric ratio which is expressed as

Tan θ = opposite side/adjacent side

Therefore,

Tan 85.7 = h/80

h = 80tan 85.7

h = 1064 feet

7 0

3 years ago

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a radio commercial for a loan company states: "you only pay for each $500 borrowed." If you borrow $1959 for 251 days, what amou

Natasha2012 [34]

Well... hmmm so.. for 500 bucks you only pay a rate of say "r", and it comes down to only 28cents, or $0.28.

If 500 is say the 100%, what percentage is 0.28?

$\bf \begin{array}{ccll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
500&100\\
0.28&p
\end{array}\implies \cfrac{500}{0.28}=\cfrac{100}{p}\implies p=\cfrac{0.28\cdot 100}{500}
\\\\\\
p=0.056\%\implies p=\cfrac{56}{1000}\%$

now, we're assuming the company is charging and APR, so you pay that at the end of the year. We're also assuming the year is only 360 days.

so, if you borrow 1959 on simple interest for 251 days out of 360 days, how much are you repaying?

$\bf \qquad \textit{Simple Interest Earned Amount}\\\\
A=P(1+rt)\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to& \$1959\\
r=rate\to 0.056\%\to \frac{0.056}{100}\to &0.00056\\
t=years\to &\frac{251}{360} 
\end{cases}
\\\\\\
A=1959\left(1+0.00056\cdot \frac{251}{360} \right)$

and surely you can do that one... which is just 1959 and a few pennies.

8 0

3 years ago