Both students made a mistake.
Describe the mistake each student made.
Explain what each student needs to do to fix their mistake.
Create your own quadratic equation, and explain how to use the quadratic formula to solve it. Be specific, using a, b, and c of your equation and giving the solutions to the equation you chose.
Answers
Lets do
[tex]\\ \tt\longmapsto 2x^2+3x+5=0[/tex]
a=2
b=3
c=5
[tex]\\ \tt\longmapsto x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]
[tex]\\ \tt\longmapsto x=\dfrac{-3\pm \sqrt{3^2-4(2)(5)}}{2(2)}[/tex]
[tex]\\ \tt\longmapsto x=\dfrac{-3\pm \sqrt{9-40}}{4}[/tex]
[tex]\\ \tt\longmapsto x=\dfrac{-3\pm\sqrt{-31}}{4}[/tex]
[tex]\\ \tt\longmapsto x=\dfrac{-3\pm \sqrt{31}i}{4}[/tex]
[tex]\\ \tt\longmapsto x=\dfrac{-3}{4}\pm\dfrac{\sqrt{31}}{4}i[/tex]
Related Questions
Is this unbiased or biased?
The Bernal leadership class is going to sell spirit t-shirts for students and needs to order a color that most students would like to wear, so they ask every fourth student entering the school about their favorite t-shirt color to make a decision about all Bernal students.
Answers
Biased, because some students may not like that color, and thus going off of the most popular opinion is only supporting the most popular color. Adding onto that, not every student even gets to vote since it is only every 4th student.
HELP LOLLLLLLLLLLLLLLLLL
Answers
Answer:
15^2 + 20^2
[tex]\sqrt{625}[/tex] = 25
Step-by-step explanation:
(20)^2+(15)^2=C^2
400+225=C^2
625=C^2
To get the C alone you need to do the opposite of squaring something which is taking the square root of something.
So, this means that the answer is C=25
Hope this helps!
Can you help me with this math question pls? I need help super fast.
Answers
Answer: I thinks it’s B
Step-by-step explanation:
the product of a number and two more than the number .. what is the expression?
Answers
what are the first three terms of the sequence defined by the following function?
f(n)=41+(n-1)^5
Answers
Answer:
41, 40 and 9Step-by-step explanation:
[tex]f(n)=41+(n-1)^5\\\\f(1)=41+(1-1)^5=41\\\\f(2)=41+(2-1)^5=41-1=40\\\\f(3)=41+(3-1)^5=41-32=9[/tex]
1/5 divided by 3 please! in fraction form!!
Answers
Answer:
1/15
Step-by-step explanation:
i will give brainliest tovthe first person that answers
Answers
Answer:
hii
Step-by-step explanation:
The zeros of a function are the values of for which the function is equal to zero. Enter a number in each blank to make true statements about the function ()=(2−6)(−4).
Answers
Answer:
Here we want to complete the blank to make the equality true:
( ) = (2 - 6)*(-4)
The equality is true if we have the same value in both sides, so we can think of this as an algebraic equation:
x = (2 - 6)*(-4)
We just need to find the value of x.
Then let's solve the right side:
x = (2 - 6)*(-4) = (-4)*(-4)
Remember the rule of signs:
(-)*(-) = (+)
x = (-4)*(-4) = 4*4 = 16
Then we need to complete the blank with the number 16
(16) = (2 - 6)*(-4)
in a game the player wins if he rolls a 4 on a number cube if the numbered cube is rolled 24 times then what is the reasonable prediction for the number of unsuccesful rolls
Answers
If you roll a numbered cube once, your chance of getting a 4 is 1/6. If you roll twice, your chance of getting a 4 is 2/12. If you roll three times, your chance of getting a 4 is 3/18. You see the pattern here? Try it yourself and see if you can get it! If you can't understand it, let me know and I'll give you the answer!
(I like to try and help before I just give the answer straight away!)
which is an irrational number?
Answers
Factorise the following:
a) x – 5x - 6
b) x + 3x – 40
C) - 7x - 30
Answers
Answer:
-4x-6
4x-40
-7x-30
Step-by-step explanation:
Which describes the number and type of roots of the equation x^3 + 121x = 0?
a. 2 real roots, 1 imaginary root
b. 1 real root, 2 imaginary roots
c. 3 real roots
d. 3 imaginary roots
Answers
Answer:
b; 1 real root and 2 imaginary roots
Step-by-step explanation:
From here, we have
x(x^2 + 121) = 0
x = 0 (1 real root)
or
x^2 + 121 = 0
x^2 = -121
x = √(-121) (2 imaginary roots)
so is would be two complex numbers from above
ILL MARK YOU BRAINLIEST SHOW WORK THO PLS
3(s+4) = s+10+2s
Answers
Step-by-step explanation: it means no solution
hope it is helpful to you
Answer:
This equation has no solutions
Step-by-step explanation:
3(s+4)=s+10+2s
Distribute
3s+12=s+10+2s
Add like terms
3s+12= 3s+10
Subtract 3s from both sides
0 + 12=10
This equation has no solutions
hallar el numero de intervalo de
33 - 11= 22
Answers
Answer:
22=22
Step-by-step explanation:
33-11
22
22=22
image is right there please help
Answers
Answer:
Step-by-step explanation:
Can you at least put the questio here
have x 50 notes and y N100 notes. There
are eight notes altogether and their total
value is N550. How many of each note do
I have
Answers
Answer:
hi
Step-by-step explanation:
hi
1. 50x + 100y = 550 (value of the notes x the number of each note)
2. x + y = 8 (the number of each note added).
3. Multiply the second equation by 50 so that it the x variables are the same in both equations. Thus, 50x + 50y = 400.
4. Subtract 50x + 50y = 400 from 50x + 100y = 550.
5. The subtraction results in 50y = 150.
6. Divide by 50. y = 3, so x must equal 5.
wel swam 86 meters. Tyrel swam 53 meters.
Answers
Answer:
wel swam 86 meters. Tyrel swam 53 meters. so what is the question
Answer:
Im guessing its who swam faster.
10. 3(6a); a = 3
11. 5d(4); d = -2
12. (5r)(-2); r = -3
13. 3b(8) + (-2)(7c); b = -2, c = 3
14. -4(3s) + 2(-t); s = ½, t = -3
15. 9(4p) - 2(3q) + p; p = -1, q = 4
16. 7(4g) + 3(5h) + 2 (-3g); g = ½, h =⅓
Answers
Answer:
The answer is 1/65
Step-by-step explanation:
Ryan and Sheila are preparing to get married. Sheila has a car payment of $297.00 per month, which is 9% of her monthly income. After they are married, Sheila knows that her car payment will only be 5% of their combined monthly income. How much money does Ryan make per month?
Answers
Answer:
$2640
Step-by-step explanation:
Sheila's car payment is 9% of her total income.
let i = total income
this equation can be used to represent the information :
9% x i = $297
to determine i, divide both sides of the equation by 9%
$297 / 0.09 = $3300
After the marriage, the car payment which is 3300 would be 5% of the combined income.
let c = combined income
5% x c = $297
c = $297 / 0.05 = $5940
Ryan's income = combined income - Sheila's income
$5940 - $3300 = $2640
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
I don't want links.
I don't want links.
I don't want links.
Answers
Answer:
You have to find the greatest common factor of the numbers
Step-by-step explanation:
can u guys help me with this
Answers
Answer:
Step-by-step explanation: Finding the height can be solved using a simple formula using the length of the base and the area. You should multiply length times area! hope this helps.
In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that a student has a cat given that they do not have a dog? ( NO LINKS )
Answers
Given:
Number of students who has a cat and a dog = 5
Number of students who has a cat but do not have a dog = 11
Number of students who has a dog but do not have a cat = 3
Number of students who neither have a cat nor a dog = 2
To find:
The probability that a student has a cat given that they do not have a dog.
Solution:
Let the following events:
A = Student has a cat
B = Do not have a dog
Total number of outcomes is:
[tex]5+3+11+2=21[/tex]
The probability that a student has a cat but do not have a dog is:
[tex]P(A\cap B)=\dfrac{11}{21}[/tex]
The probability that a student do not have a dog is:
[tex]P(B)=\dfrac{11+2}{21}[/tex]
[tex]P(B)=\dfrac{13}{21}[/tex]
The conditional probability is:
[tex]P\left(\dfrac{A}{B}\right)=\dfrac{P(A\cap B)}{P(B)}[/tex]
[tex]P\left(\dfrac{A}{B}\right)=\dfrac{\dfrac{11}{21}}{\dfrac{13}{21}}[/tex]
[tex]P\left(\dfrac{A}{B}\right)=\dfrac{11}{13}[/tex]
Therefore, the probability that a student has a cat given that they do not have a dog is [tex]\dfrac{11}{13}[/tex].
How do you solve this? I really don't understand...
Answers
Answer:
MEAN 5.8 add all the points up then divide by the number of dots
MEDIAN 5 the middle of the data
MODE 5 most accruing one
RANGE 7 maximum minus minimum
PLS WILL GIVE 100 POINTS AND MARK BRAINLEST
Answers
Answer:
angle 2 = 128 because of a rule that I unfortunately cannot remember the name of....
angle 6 = 180 - 47 = 133
because a straight line = 180 degrees
angle 3 = 180 - 128 = 52
Same reason as angle 6
angle 1 = 52 + 47 = 99
180 - 99 = 81
Sum of the angles in a triangle = 180
All of the underlined numbers are the answers
Hope that answers your question
Don't hesitate to comment if you are confused about something
Step-by-step explanation:
which of these expression is equivalent to -2(3-y)
Answers
[tex]( - 6 + 2y)[/tex]
answer the question
graph the equation y = -x^2 + 10x - 16 on the accompanying sex of axes. you must plot 5 points including the roots and the vertex
Answers
Answer:
This is what I got! Hope it helps! :)
The zeroes are (2, 0) and (8, 0),Vertex is (5, 9), remaining points plotted on the graph are (4,8) and (6,8).
What is graph of quadratic equation?The graph is not a line. This figure is called a parabola. Every quadratic equation has a graph that looks like this.
All parabolas of the form y = [tex]a{x}^{2}+bx+c[/tex] open upwards or downwards.
When the [tex]{x}^{2}[/tex] term is positive, the parabola opens upward, and when the [tex]{x}^{2}[/tex] term is negative, the parabola opens downward.
After plotting the equation [tex]y=-x^{2} +10x-16[/tex]
From the graph i have labelled 5 points, they are
As per the graph the zeroes are (2, 0) and (8, 0),Vertex is (5, 9), remaining points plotted on the graph are (4,8) and (6,8).
Find out more information about graphing a quadratic equation here
https://brainly.com/question/14879503
#SPJ2
how many lines of symmetry does does this triangle have ?
Answers
Answer:
D..... 3 lines of Symmetry
9.42 * 6.7 Show explanation
Answers
Answer: 63.114
Step-by-step explanation:
Multiply like normal but don’t bring your decimal down count how many number are behind the decimal. You have 2 on the first number and 1 on the second so count 3 places
Answer:
63.114
Step-by-step explanation:
See the picture I attached, I hope this helps!
erms is selling tickets to a musical performance.
Answers
Answer:
the price of an adult ticket is $3 and a child ticket is $2
Step-by-step explanation:
45 Points HELP RIGHT NOW!!!! Due in 2 hours!!!!! NO websites are allowed and please give me the order like this I need the steps too!!! I will mark you brainless too don’t answer for points or your reported
1 (table)
2(dog walker)
3(Ms Scholl)
Answers
Kayaker=12.5, so 12 knots
Commercials=9 commercials per hour
Dog= 7 miles
Tutoring=750 dollars