4 years ago

I need a real-life reference to the mathematical definition to variables

Mathematics

1 answer:

finlep [7]4 years ago

4 0

Answer: a variable is a quantity that may change within the context of a mathematical problem or experiment

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There are 255 students seated in rows of 15 how many rows are there

tester [92]

Answer:17

Step-by-step explanation:

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4 years ago

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PLEASE HELP ON THIS<br><br> THX

Sedbober [7]

F is increasing g decreasing

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4 years ago

Complete the table of values for y= x^2-2x-3

Levart [38]

Answer:

x=3,y=0

x=-1,y=0

Step-by-step explanation:

We will have to factorise to get the value of x before solving for y

Let's solve

y=x^2-2x-3

To factorise x

x^2-3x+x-3

x(x-3)+1(x-3)

(x-3)+(x+1)

x-3=0

x=3

x+1=0

x=-1

Let's substitute the value of value to get the value for y

y=x^2-2x-3

When x is 3

y=3^2-2(3)-3

y=9-6-3

y=0

When x is-1

y=(-1)^2-2(-1)-3

y=1+2-3

y=0

Therefore when x is 3,y is 0

When x is -1,y is 0

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4 years ago

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Someone please help me on this one

irakobra [83]

12lb=$27
14lb=$x

$\frac{12}{27} = \frac{14}{x}$

cross multiply

12x=378
divide both sides by 12
x=31.5= $31.50

Answer=$31.50

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3 years ago

You find a sales receipt from a store that shows the total price as $40, and the total amount paid including sales tax as $42.

Alex777 [14]

Answer:

Solving your equation gives you $2.00.

2/40 = 0.05 = 5%

Step-by-step explanation:

happy to help ya :)

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3 years ago

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