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Jlenok [28]
3 years ago
10

How do you know a function is a quadratic function?

Mathematics
2 answers:
Vladimir79 [104]3 years ago
8 0

Answer:

Step-by-step explanation:

A function is quadratic if you can express it in the form :

f(x) = Ax² + Bx + C

and that A is non-zero.

The highest degree variable is 2 (i.e x² is the highest exponent)

Bogdan [553]3 years ago
6 0

Answer:

if the X variable is squared, then the function is quadratic

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Is this correct? answer quick please!
scZoUnD [109]

Answer:

yessssss

Step-by-step explanation:

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8 0
3 years ago
Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Gre4nikov [31]

Answer:

number 2 is 20 percent so j

Step-by-step explanation:

8 0
3 years ago
An equation for the depreciation of a car is given by y=A(1-r)t where y=current value of the car.A=original cost r=rate of depre
Ann [662]
<h3>Answer: Approximately 6.58 years old</h3>

The more accurate value is 6.57881347896059, which you can round however you need. I picked two decimal places.

==================================================

Explanation:

Let's pick a starting value of the car. It doesn't matter what the starting value, but it might help make the problem easier. Let's say A = 1000. Half of that is 1000/2 = 500.

So we want to find out how long it takes for the car's value to go from $1000 to $500 if it depreciates 10% per year.

The value of r is r = 0.10 as its the decimal form of 10%

t is the unknown number of years we want to solve for

---------------------------

y = A(1 - r)^t

500 = 1000(1 - 0.1)^t

500 = 1000(0.9)^t

1000(0.9)^t = 500

0.9^t = 500/1000

0.9^t = 0.5

log( 0.9^t ) = log( 0.5 )

t*log( 0.9 ) = log( 0.5 )

t = log( 0.5 )/log( 0.9 )

t = 6.57881347896059

Note the use of logs to help us isolate the exponent.

6 0
3 years ago
Confused on this one. I need someone to help me out.
Arlecino [84]
The answer is T=PV/nR

Hope this helps!
6 0
3 years ago
Katie and 5 friends split the bill evenly.The total cost was $75 How much will each person pay?
Serhud [2]
The number of people is:
1+5= 6

$75/ 6 people= $12.50/ person.

Each person pays $12.50~
8 0
3 years ago
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