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hjlf
3 years ago
11

Which of the following equations represents a quadratic function?

Mathematics
2 answers:
MAVERICK [17]3 years ago
6 0
The answer is <span>b. y=3x^2-5x+9
</span><span>
The general formula for quadratic function is:
y = ax</span>² + bx + c 

Among all choices only b. is correct:
y = ax² + bx + c 
y = 3x² - 5x + 9 
Marat540 [252]3 years ago
4 0
<span>a. x=y^2-2y+4 & b. y=3x^2-5x+9

or just </span><span>b. y=3x^2-5x+9 (if you can only choose one answer) </span>
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I need help on all of them
PtichkaEL [24]
1. 1 hour is 3x20 minutes so distance is 3 km wi=hich is 3000 metres
2. same way as before but now 4x 1km is 4000 metres, minus the previous answer is 1000 metres.
3. 26 days x 24 hours (in one day) = 624 hours
4. A) 1 hour 45 minutes
  B) 10:10, because add one hour and then minus 10 minutes (probably easiest way)
5 0
3 years ago
Find the simple interest earned on $2,500 at 6% for 2 years.
Elina [12.6K]

Answer:

$2800

Step-by-step explanation:

6/100 x 2500 = 150

150 x 2 = 300

2500 + 300 = $2800

<em>Feel free to mark it as branliest :D</em>

7 0
3 years ago
Clara created the poster shown below:
lana66690 [7]

Answer:

length=4\ cm\\width=6\ cm

Step-by-step explanation:

Given the rectangular poster shown in the picture, you know that its dimensions (its width and its lenght) are:

w_1=24\ cm\\l_1=16\ cm

In order to calculate the dimensions of the rectangular  at \frac{1}{4} times its current size, you need to multiply the original lenght by \frac{1}{4} and multiply the original width by \frac{1}{4}.

Knowing this, you get:

w_2=w_1\frac{1}{4}\\\\w_2=(24\ cm)(\frac{1}{4})\\\\w_2=6\ cm\\\\\\l_2=l_1\frac{1}{4}\\\\l_2=(16\ cm)(\frac{1}{4})\\\\l_2=4\ cm

6 0
3 years ago
Write an explanation for both Part A and Part B using 3-4 complete sentences. Part A: Explain how you can determine if a system
vampirchik [111]

Answer:

Step-by-step explanation:

Part A : when comparing graphs : A system of equations will have no solutions (on a graph) when your lines never cross each other. They never cross each other because your lines are parallel.

Part B : by comparing each algebraic equation : A system of equations will have no solution if your lines are parallel. Parallel lines will have the same slope but different y intercepts. Example :

2x - y = 2

4x - 2y = 8

put both equations in slope intercept form

y = 2x - 2

y = 2x - 4

they both have the same slope of 2.....and the y intercepts are different....meaning they are parallel lines and have no solutions

7 0
3 years ago
Sean has 4 cookies. He wants to divide the cookies among his friends so that each friend gets 2/3 of a cookie. How many friends
andrey2020 [161]

Answer:

If a full cookie is 3/3 then 4 3/3 cookies would be 12/3 cookies and then you would divide by the 2/3 cookies there fore it would be 6 friends if we presume Sean is a bully and excludes matthew who has been there for him for many years acting as a shoulder for a sean to cry on.


5 0
3 years ago
Read 2 more answers
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