Question 3 A student solved a quadratic equation as shown here

Question 3 A Student Solved A Quadratic Equation As Shown Here

Answers

Answer 1

Answer:

Didn't move the 12 on the other side of the equal sign to make

2x^2 + 5x - 12 = 0

the other steps error city.

Step-by-step explanation:

2x^2 + 5x - 12 = 0

(2x - 3)(x + 4)= 0

2x - 3 = 0

2x = 3

x = 3/2

x + 4 = 0

x = -4


Related Questions

I NEED THIS ASAP ILL GIVE 100 POINTS
1. Gas stations A. B. C, and G are located
along a straight lighway.
Station B is between stations: A
and c The distance frim station A to
station C is 22 miles. BC is 5 miles less than twice AB

Station C is between stations B and C. 4 miles from C. Find AC.

Answers

Answer: 3

Step-by-step explanation:You can't start at station 0 or 1, as there is not enough gas to travel to the next station.

Let's start at station 2 and fill up with 4 unit of gas. Your tank = 0 + 4 = 4

Travel to station 0. Your tank = 4 - 3 + 2 = 3

Travel to station 1. Your tank = 3 - 3 + 3 = 3

You cannot travel back to station 2, as it requires 4 unit of gas but you only have 3.

Therefore, you can't travel around the circuit once no matter where you start.

Geometry help please :)

Answers

I'm assuming you want to answer problem 5.

If so, then the answer is A = 84 degrees

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

Explanation:

Minor arc BC is 96 degrees. This is the measure along the edge of the curve from B to C, following the shorter path. You correctly identified that the central angle BKC is also congruent to this arc measure, since the central angle cuts off this arc.

Because segments AB and AC are tangents to the circle, this makes the segments to be perpendicular to the radii that meet at the point of tangency. In other words, AB is perpendicular to BK, and AC is perpendicular to CK.

Ignore line BC. Focus on quadrilateral ABKC. So far we know that

angle K = 96angle B = 90angle C = 90

The only thing missing is angle A, which is what we're after. Recall that for any quadrilateral, the four interior angles always add to 360 degrees.

So,

A+B+K+C = 360

A+90+96+90 = 360

A+276 = 360

A = 360-276

A = 84

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

Or as a shortcut, you can use the property that because B and C are right angles, this means we have 360-B-C = 360-90-90 = 180 degrees left for angles A and K to add to. This makes angle A and angle K to be supplementary.

So,

A+K = 180

A+96 = 180

A = 180-96

A = 84

need help finding area TuT​

Answers

The answer to the question is 235.5

If I=65 cm and j=33 cm, what is the length of k?

Answers

Answer:

sales forecast for Daft is 506 units. Digby wants to have an extra 10% of units on hand above and beyond their forecast in case sales are better than expected. (They would risk the possibility of excess inventory carrying charges rather than risk lost profits on a stock out.) Taking current inventory into account, what will Daft's Production After Adjustment have to be in order to have a 10% reserve of units available

can somebody please help me? nobody on here helps anymore ://

Answers

Answer:

Its not like that its just that if you post a question no one knows the answer nobody will answer you and unfortunately the question you posted I don't know how to help else I would have.

Sorry

1. A
2. C
3. B
4. D

You need to consider the way these things would change. For example, the weight of a book would stay constant over time while the air temperature would fluctuate throughout a day. Just remember that time is always on the X-axis because it is an independent variable :)

3x-y=2 and 12x-4y=4 parellel or perpendicular line

Answers

Answer:

They are parallel line.

Help please!!No links!!
3. Solve the following.
a) This railway car is 320 cm in diameter and 17.2 m long.
Calculate its volume of fuel it can transport in liters. [Hint: 1 m3 = 1,000 L]

Answers

Answer:

138330.608 liters (about 138331)

Step-by-step explanation:

V = πr²h

r = 320 / 2 = 160cm = 1.6m

V = π * 1.6^2 * 17.2 = 138.330608 m³

138.330608m³ * 1000L = 138330.608 liters

What is dual and complement?

Answers

The Boolean dual are created by replacing AND operator with OR operator and the complement is defined as the negation of the statement .

What is Boolean Expression ?

The Boolean Expression is defined as a logical statement that is either TRUE or FALSE . It compares data of any type as long as both the parts of  expression have same basic data type.

The Dual of Boolean Expression are calculated by simply replacing AND operator with OR and OR operator with AND .

The Compliment of Boolean Expression  is defined as negation of  variables with replacement .

For Example : if the statement is [tex]A+B[/tex] ,

then the dual will be [tex]AB[/tex] and the compliment will be [tex]A'B'[/tex] .

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Can u please help.........................

Answers

The triangle ABC, along with it's image after the reflection x = -3, is given on the graph presented at the end of the answer.

How to obtain the image of the triangle?

The coordinates for the original vertices of the triangle are given as follows:

A(-5, -6), B(-4, -3) and C(-3,-7).

The reflection line is given as follows:

x = -3.

The reflection lines is a vertical line, meaning that for the reflected triangle, the y-coordinate remains constant, while the x-coordinate means that the triangles will be on the same distance relative to the reflected line, however on the opposite direction.

Vertex A has a x-coordinate two units left of x = -3, hence the coordinates of the image will be two units right, hence:

A'(-3 + 2, -6) = (-1, -6).

Vertex B has a x-coordinate one unit left of x = -3, hence the coordinates of the image will be one unit right, hence:

B'(-3 + 1, -3) = B'(-2,-3).

Vertex C remains at the same position, as it has a x-coordinate of -3.

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what is |-2| = _____

Answers

Answer:

2

Step-by-step explanation:

The bars means absolute value so you would find the distance from zero, which is two. Also, anything with negatives in those bars changes to positive because you are calculating the distance from zero. The positive numbers should always stay the same.

Answer:

2

Step-by-step explanation:

The absolute value is the distance between a number and zero. The distance between  

− 2  and  0  is  2

Select the interval where the graph h is increasing.

Answers

Answer: B

Step-by-step explanation:

Based on the graph, we know that it is increasing if it is going up from left to right.

A: incorrect

Looking at choice A, it says the interval is from -5<x<-4. This means we have to find x=-5 and x=-4. On the graph, that interval is going down from left to right, so it is decreasing.

B: correct

Looking at choice B, it says the interval is from -2<x<2. This means we have to find x=-2 and x=2. On the graph, that interval is going up from left to right, so it is increasing.

C: incorrect

Looking at choice C, it says the interval is from 3<x<4. This means we have to find x=3 and x=4. On the graph, that interval is going down from left to right, so it is decreasing.

Therefore, B is the correct answer.

Which graph best represents a function with zeros of -3,0 and 2

Answers

The graph C. represents the polynomial with zeros of -3, 0 and 2.

What are zeros of a polynomial?

An expression that consists of variables, constants, and exponents that is combined using mathematical operations like addition, subtraction, multiplication, and division is referred to as a polynomial (No division operation by a variable).

All the x-values that bring a polynomial, p(x), to zero are referred to as its zeros. They are intriguing to us for a variety of reasons, one of which is that they provide information about the graph's x-intercepts for the polynomial.

Alternately, we might state that the zeros of the polynomial are the x-intercept of its graph. Thus, the needed function is represented by the graph with the coordinates -3, 0, and 2.

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The complete question is as follows:

Select the correct answer.

Which graph best represents a function with zeros of -3, 0, and 2?

GEOMETRY HELP PLEASE!7

Answers

Answer:

<CPE= 137

Step-by-step explanation:

In order to find the measure of (<CPE), one must add the measure of <(CPD) and (<DPE). From the given picture, one can infer that line (CA) is a diameter. This means that the sum of all angles on either side of the line is (180). Therefore, to find the measure of (<DPE) add up all of the angle measures on one side of the line, and set it equal to (180). Solve and then add the result to the value of (<CPD) to find the measure of (<CPE).

(<CPD) + (<DPE) + (<EPA) = 180

Substitute,

88 + (<DPE) + 43 = 180

Simplify,

131 + (<DPE) = 180

Inverse operations,

<DPE = 49

Now add the value of (<DPE) to (<CPD),

(<CPD) + (<DPE)

= 88 + 49

= 137

saben que significa eso​

Answers

that’s why cause you added it up

Find an
angle 0 coterminal to -301°, where 0°

Answers

Answer:

what do you mean?!??!!!!

I don’t understand...What do you mean

What is an example of a no solution equation?

Answers

The equation 5x + 5 = 5x - 5 has no solution because the left side of the equation (10) cannot equal the right side of the equation (-5).

No solution equation:

5x + 5 = 5x - 5

To solve this equation, we must first isolate the variable. To do this, we can subtract 5x from both sides of the equation.

5x + 5 = 5x - 5

Subtract 5x from both sides:

5 + 5 = - 5

Simplify:

10 = -5

At this point, we can see that this equation has no solution because the left side of the equation (10) cannot equal the right side of the equation (-5).

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26. Pregnancy length The length of human pregnancies from conception to birth
follows a Normal distribution with mean 266 days and standard deviation 16 days.
Choose a pregnant woman at random. Let X = the length of her pregnancy.
(a) Find P(X2 240) and interpret the result.
(b) What is P(X> 240)? Explain.
(c) Find the value of c such that P(X ≥ c) = 0.20. Show your work.

Answers

There is a chance (probability) of about 94.84% that the pregnancy last at least 240 days and P (X ≥ 240) = 0.9484 and the  the value of c such that P(X ≥ c) = 0.20 is 279.44

What is probability?

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur,

Given that Mean (μ) = 266

and Standard deviation(σ) = 16

The z-score is the value decreased by the mean divided by the standard deviation:

z = (x−μ)/σ = (240−266)/16

≈−1.63

Determine the corresponding probability using the normal probability table in the appendix:

P (X ≥ 240)

= 1 - P (X < 240)

= 1 - P(Z < -1.63)

= 1 - 0.0516

=0.9484

(a) There is a chance of about 94.84% that the pregnancy last at least 240 days

(b) P (X ≥ 240) = 0.9484

(C) Given that 20% is greater than z, then we know that 80% or 0.80 is smaller than z.

The area of 0.7995 is closest to 0.8, and it is located in the row 0.8 and column .04

thus, the z-value is z=0.84.

x = μ+zσ = 266+0.84*(16 )

=279.44

The  the value of c such that P(X ≥ c) = 0.20 is 279.44

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There is a chance (probability) of about 94.84% that the pregnancy last at least 240 days and P (X ≥ 240) = 0.9484 and the  the value of c such that P(X ≥ c) = 0.20 is 279.44

What is probability?

Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur,

Given that Mean (μ) = 266

and Standard deviation(σ) = 16

The z-score is the value decreased by the mean divided by the standard deviation:

z = (x−μ)/σ = (240−266)/16

≈−1.63

Determine the corresponding probability using the normal probability table in the appendix:

P (X ≥ 240)

= 1 - P (X < 240)

= 1 - P(Z < -1.63)

= 1 - 0.0516

=0.9484

(a) There is a chance of about 94.84% that the pregnancy last at least 240 days

(b) P (X ≥ 240) = 0.9484

(C) Given that 20% is greater than z, then we know that 80% or 0.80 is smaller than z.

The area of 0.7995 is closest to 0.8, and it is located in the row 0.8 and column .04

thus, the z-value is z=0.84.

x = μ+zσ = 266+0.84*(16 )

=279.44

The  the value of c such that P(X ≥ c) = 0.20 is 279.44

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(PLS HELP ASAP WILL DO BRAINLIEST IF RIGHT AND GOOD POINTS)

A wildlife refuge in South America has howler monkeys and spider monkeys. A biologist working there randomly selected eight adults of each type of monkey, weighed them, and recorded their weights in pounds.
howler monkey: {15, 16, 17, 17, 17, 17, 18, 19}
spider monkey: {12, 13, 13, 14, 14, 14, 16, 16}
(a) Calculate the mean and MAD for each type of monkey.
(b) Calculate the means-to-MAD ratio for the two types of monkeys.
(c) What inference can be made about the weight of both types of monkeys? Explain.
when answering please seperate the answers with either 1, 2, 3 or a, b, c! thank you

Answers

Answer:The mean for the howler monkeys is 17 and the MAD is 0.8571.

The mean for the spider monkeys is 14 and the MAD is 1.1429.

The means-to-MAD ratio is 2.6249.

Step-by-step explanation:

To find the mean of the howler monkeys, add all of the data values and divide by 7:

(15+16+17+17+17+17+18+19)/7 = 119/7 = 17

To find the MAD, subtract each data point from the mean; take the absolute deviation; then average these together:

(|15-17|+|16-17|+|17-17|+|17-17|+|17-17|+|17-17|+|18-17|+|19-17|)/7

=(2+1+0+0+0+0+1+2)/7=6/7 = 0.8571

Repeating these processes for the spider monkeys:

Mean:(12+13+13+14+14+14+16+16)/7 = 98/7 = 14

MAD:

(|12-14|+|13-14|+|13-14|+|14-14|+|14-14|+|14-14|+|16-14|+|16-14|)/7

=(2+1+1+0+0+0+2+2)/7 = 8/7 = 1.1429

help me cause I’m failing math

Answers

Answer:

9

Step-by-step explanation:

[tex] \frac{ - 3(16 - 35 + 4)}{5} \\ \\ = \frac{ - 3(20 - 35 )}{5} \\ \\ = \frac{ - 3( - 15 )}{5} \\ \\ = \frac{45}{5} \\ \\ = 9[/tex]

Answer:

[tex]9[/tex]

Step-by-step explanation:

[tex] \frac{ - 3(16 - 35 + 4)}{5} [/tex][tex] \frac{−3(20-35)}{5} [/tex][tex] \frac{−3 (−15)}{5} [/tex][tex] \frac{45}{5} [/tex][tex]9[/tex]Hope it is helpful....

Find the midpoint for (4,3) and (-2,1)

Answers

Answer:

The desired midpoint is (1, 2).

Step-by-step explanation:

The average of the x-coordinates of the two given points is (4 - 2)/2, or 1.  The average of the y-coordinates is (3 + 1)/2 = 4/2 = 2.

The desired midpoint is (1, 2).

The answer is Midpoint = (1,2)

PLS HELP ASAP THANK YOU

Answers

Answer:

PLS HELP ASAP THANK YOU

I am always there to help you

asked your question

hope it is helpful to you

Answer:

ok

Step-by-step explanation:

A drawer contains 9 red socks and 11 blue socks. It is dark and you are trying to grab a matching pair. How many socks do you need to take out to be sure of a matching pair

Answers

If we pull 3 socks then there is a 100% possibility that 2 socks will be of same colour.

What is Probability ?

The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, broadly speaking, 0 denotes the event's impossibility and 1 denotes certainty.

A probability is a numerical representation of the possibility or chance that a specific event will take place. Both proportional ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

The likelihood that a specific occurrence will occur. (2): the proportion of the total number of available outcomes to the number of outcomes in an exhaustive set of equally probable options that result in a certain occurrence.

There are 9 red socks and 11 blue socks

So if we find a red/blue sock in the first turn,

The second can be both blue or red so we can't be sure it will be matching or not.

At third turn any one colour of sock will match with any of the two already pulled before if they are different.

So, if we pull 3 socks then there is a 100% possibility that 2 socks will be of same colour.

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Mrs. Johnson lets her students choose between two word problems:
Problem A: If you are digging for dinosaurs and need to fence off your dig site, what's the biggest site you can fence off with 40 ft. of fence?
Problem B: What is the largest area you can create with 20 inches of rope?
Mrs. Johnson finds a significant majority of her students chose to work Problem A. Which of the following is the most likely reason more students chose Problem A instead of Problem B?

Answers

The reason to choose problem B over A is simple -  it is more relatable to them.

Problem A involves dinosaurs, which may be more interesting to students than the abstract concept of creating an area with rope. Additionally, the use of feet as a unit of measurement in Problem A may be more familiar to students than inches.

Finding a number that represents the quantity of anything is called measurement. An accepted quantity that is used to represent a physical quantity is called a measurement unit. Let's learn about some of the standard units used to measure physical quantities.

The inch, foot, yard, and mile are the fundamental units of length and distance measurement in the English system. The rod, furlong, and chain are additional length units.

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At present 1 Euro can be bought at Rs 130. If Nepali money is revaluated by 10% then what is
the cost of 50 Euro ?​

Answers

Answer:

130-(130×0.1)

117

if 1e=177

then 50e=5850

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otal deposit for Problems 5 through 19.
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63 874.56
85
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347.98
134.97
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5
168.14
31
777.50
154 123.19
12 11
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54
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32
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16
67
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27
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15. Jess Norton stopped at an ATM location to deposit 2 one hundred-dollar
bills and checks for $474.85 and $321.15. He received $50.00 in cash.
16. Olive Baker, Spirit club treasurer, deposits the club's receipts. She has 4
checks for $10.00 each, 12 for $7.50, and cash consisting of six 20-dollar
bills, five 10-dollar bills, and 18 one-dollar bills.
17. Cyndi Winer deposits three checks for $425.22, $883.99, and $57.05. She
also deposits cash of 45 one-dollar bills, 15 five-dollar bills, and 12 ten-
dollar bills. The change deposited includes 28 quarters, 16 dimes, 19
nickels, and 65 pennies. She would like to receive $60.00 in cash.
18. Elias Rubio deposits three checks for $598.20, $2,274.26, and $3,248.79.
His cash consists of 75 one-dollar bills, 78 five-dollar bills, 33 ten-dollar
bills, 80 quarters, 32 dimes, 95 nickels, and 5 pennies. He would like to
receive $40.00 in cash.

Answers

The total cost of Jess Norton is $995.85 and the total cost of Olive Baker is $678 .

What is total cost ?

The total cost formula is used to total up the variable and constant expenses associated with providing commodities. Total cost = (Average Fixed Cost x Average Variable Cost) x Units Produced is the formula.

In economics, total cost is the total of all expenses a company incurs to produce a particular level of output.

The average cost, or the typical sum of money required to create a unit, can be determined using the cost function. The average cost function is A(x)=C(x)x, where x > 0 and C is the constant. Calculating the average cost per unit requires dividing the total cost by the quantity of units produced.

For Jees Norton,                    

 2 one hundred dollar bills = 2 x $100

                                                   = $200                

 Total deposits = 2 one hundred dollar bills + Checks

                                = $200 + $474.85 + $321

                                = $995.85          

                     

For Olive Baker,                    

 Checks amount = $100 x 4

                                   = $400                  

 12 for $7.5

       = 12 x $7.5

       = $90                  

 Six 20-dollar bills = 6 x $20

                                     = $120                  

 Five 10-dollar bills = 5 x $10

                                      = $50                  

 Eighteen 1-dollar bills = 18 x $1

                                            = $18                

 Total deposits = $400 + $90 + $120 + $50 + $18

                                = $678

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Find the rate of change for this linear function.

y = 5x - 1



Find the initial value of the linear function

Y=5x+2

Answers

rate of change for this linear equation, y = 5x - 1 is +5

the initial value of the linear equation, y = 5x + 2 is +2.

What is linear equation?

A linear equation is an algebraic equation of the form y = mx+c, where m is the slope and c is the y-intercept, and only a constant and a first-order (linear) component are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables." If a linear equation contains two variables, it is referred to as a linear equation in two variables, and so on.

Non-linear equations are those that do not produce a straight line. It has a changeable slope value and resembles a graphed curve.

Given that,

y = 5x - 1 is a linear equation.

As we know, when linear equation is in the form of y = mx + c, here m is the slope or the rate of change, and c is the Y-axis intercept, or value of y when x is zero, or initial value.

Therefore, for the given equation, rate of change is 5 and initial value is -1.

Given that,

y = 5x + 2

is a linear equation.

As we know, when linear equation is in the form of y = mx + c, here m is the slope or the rate of change, and c is the Y-axis intercept, or value of y when x is zero, or initial value.

Therefore, for the given equation, rate of change is 5 and initial value is + 2.

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please help i can give brainliest!!!

Answers

Answer:

medain:64

Q1:62

Q3:70

Step-by-step explanation:

the line in the middle of the box in the box plot is the medain which is over the number 65

Q1 is the first line of the box which is over 62 and Q3 is the 3rd one is 70.

(im a bit confused with the box plot part

The diameter of a circle is 16 centimeters. How can I calculate the area?

Answers

Answer:

201.06 cm squared

Step-by-step explanation:

The formula for area of a circle is

A=πr²

Since they give you the diameter, you have to divide it by 2 to find the radius (16 ÷ 2)

Plug in the numbers (π × 64) and you get your answer!

Have a good day :)

Please help, I’ll give brainliest UwU

Answers

Answer:

your answer is B uwu have good day

Step-by-step explanation:

I need help!!! i attached a photo of the math!!​

Answers

Answer:-1/p^3

Step-by-step explanation:You do exponents first so -p to the power of -7 is -1/p^7 which then you do -p^4 which is p^4 multiply both you get -1/p^3

Answer:

-1/P3minus 1 P cube

Step-by-step explanation:

Hope this helps you :)

Other Questions
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