3 years ago

State the domain and range of the following set

Mathematics

1 answer:

katrin2010 [14]3 years ago

4 0

Answer:

domain(x)={30,40,50,60} and range(y)={60,5040,30}

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3x+2y=23 1/2x-4=y What should I do for this one...? I dont really understand

Hitman42 [59]

Since you have y alone on one side of the equation......

Use substitution and plug in 1/2x-4 for y in the other equation.

$3x+2(1/2x-4)=23\\$

Distribute

$3x+x-8=23$

Combine like terms

$4x-8=23$

Add 8 to both sides

$4x=31$

Divide by 4

and $x=31/4$

Plug this value in for x

$31/4*1/2-4=y$

Simplify

$31/8-4=y$

Multiply everything by 8 and simplify

$31-32=8y\\-1=8y$

Divide.....

$y=-1/8$

Your answers are:

$y=-1/8\\x=31/4$

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3 years ago

Tom taxis charges a fixed rate $4 per ride plus $0.50 per mile Carla cabs does not charge a fixed rate but charges $1.00 per mil

RSB [31]

at 8 miles they are the same amount after that Carlas cab is more money than tims

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2 years ago

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Mario made this model to find the 3 digit number and a 1 digit number what multiplication sentence represents marios model

djyliett [7]

Answer:

Step-by-step explanation:

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3 years ago

The equations of two functions are y =-28x + 8 and y=-29x + 7. Which function is changing more

irinina [24]

Answer:

$y=-29x+7$ is changing more quickly.

Step-by-step explanation:

This is because the equation $y=-29x+7$ has a larger slope. The speed of change is determined entirely by the slope; the larger the slope, the faster the line goes up or down. It doesn't matter if it's negative or positive. -29 is the slope of the equation.

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alexdok [17]

Answer:

80 people prefered peaches

Step-by-step explanation:

250-68%=80 people

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3 years ago