3x^2+bx+24=0 if one of its root is 3

Answers

Answer 1

Answer:

Other root of equation, [tex]\frac{8}{3}[/tex]

Value of ([tex]b[/tex]), [tex]-17[/tex]

Step-by-step explanation:

The given quadratic equation is in standard form. Standard form is the basic format of representing a quadratic equation, a quadratic equation in standard form would use the following format,

[tex]y=ax^2+bx+c[/tex]

To solve this problem, one could use Vieta's theorems. Vieta's theorems state the following, let ([tex]x_1[/tex]) and ([tex]x_2[/tex]) represent the roots of the equation,

[tex](x_1)+(x_2)=-\frac{b}{a}[/tex]

[tex](x_1)(x_2)=\frac{c}{a}[/tex]

Substitute the given values into the equation,

[tex]3+(x_2)=-\frac{b}{3}[/tex]

[tex](3)(x_2)=\frac{24}{3}[/tex]

Simplify,

[tex](3)+(x_2)=-\frac{b}{3}[/tex]

[tex](3)(x_2)=8[/tex]

Inverse operations,

[tex](3)+(x_2)=-\frac{b}{3}[/tex]

[tex]x_2=\frac{8}{3}[/tex]

Substitute in the value of ([tex]x_2[/tex]),

[tex](3)+(\frac{8}{3})=-\frac{b}{3}[/tex]

Simplify, convert to improper fractions and combine like terms,

[tex]\frac{9}{3}+\frac{8}{3}=-\frac{b}{3}[/tex]

[tex]\frac{17}{3}=-\frac{b}{3}[/tex]

Multiply both sides of the equation by ([tex]3[/tex]) to remove the denominator,

[tex]17=-b[/tex]


Related Questions

Part F:
Find the length and width of rectangle GFKJ, and calculate its area.
Only answer if you know!

Answers

Answer: length of rectangle GFKJ = FK = (30 – 8) = 22 feet

width of rectangle GFKJ = GF = 5 feet

area of rectangle GFKJ = length × width

= 22 × 5

= 110 square feet

I wish that helped

Step-by-step explanation:

PLEASE HELP IM TIMED ON THIS!!!



After simplifying, what will x be equivalent to?
a^9/a^2=a^x

Answers

Answer:

x = 7

Step-by-step explanation:

Hope this helps! : )

Ron measured the radius of a quarter to be 11 millimeters. Which expression can he use to
find the circumference of the coin?

Answers

Answer:

2x11xpie

Step-by-step explanation:

A school principal is trying to decide how long the breaks should be between periods. He plans to time how long it takes several students to get from one classroom to another. Name a tool he could use to collect the data. ​

Answers

he could use a bar graph to plot data

At a fastfood, 28 burgers are being ordered for every 7 customers. The number of burgers being ordered is directly proportional to the number of customers.

What is the constant of proportionality that relates the number of burgers ordered to the number of customers?

1/4
1/7
4
7

Answers

The constant proportionality is 4

Carlos deposits $250 into a savings account that earns 4% interest added to it annually. How much interest is added at the end of the year?

The O’Neill Raiders fundraiser has raised $700, which is 28% of their total fundraising goal. What is their total goal?

Sameer scored better than 78% of all students taking a standardized exam. If 650 students took the exam, how many did Sameer score better than?

Answers

Yes he is in the car with him he said yes yes I got him a

The interest added at the end of the year is $10, The total goal of O’Neill Raiders fundraiser is $2500 and Sameer scored better than 507 students.

What is Percentage?

Percentage is the parts of a number per fraction of 100. We can divide a number with it's whole and then multiply with 100 to calculate the percentage of any number.

Initial amount, P = $250

Rate of interest, r = 4% = 0.04

Interest amount = P × r × t, where t is the number of years = 1 here.

                          = 250 × 0.04 × 1

                          = $10

28% of the total fundraising goal = $700

Let x be the total fundraising goal.

28% × x = 700

0.28x = 700

x = 700 / 0.28 = $2500

Total number of students = 650

Sameer scored better than 78% of all students.

Number of students that Sameer scored better = 78% × 650

                                                                               = 0.78 × 650

                                                                               = 507

Hence all the answers are found.

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Pls help. I need a scatterplot for this representation.

1: hrs: 0.7 gpa: 1.11

2: hrs: 18 gpa: 4

3: hrs: 16.7 gpa: 3.21

4: hrs: 18 gpa: 3.7

5: hrs: 13.8 gpa: 1.42

6: hrs: 21.9 gpa: 3.69

7: hrs: 19.5 gpa: 3.77

8: hrs. 15.5 gpa: 3.92

9: hrs: 0.7 gpa: 1.11

10: hrs: 16.7 gpa: 3.5

Answers

1 2 3 4yyggggggggggghbrbhrheje

Does anyone wanna ta lk? im pretty bo red at the moment

Answers

Answer:

No thanks

Step-by-step explanation:

Answer:

sure what up?

Step-by-step explanation:

10.A recipe that Kyleigh is making requires 3 pounds of flour. If Kylegh wants to triple the recipe,
how many ounces of flour will be needed?

Answers

Answer:

kayleigh will need 9 pounds of flour

helpppp assaaaaaaap
determine the equation of line (AB)
A(I;1) and B(0;5)​

Answers

y = -4x +5 should be right!

Help on this problem please!!

Answers

Answer:

points (8, 0) and (3, 0)

Step-by-step explanation:

Here we're being asked to find the roots of this quadratic equation.

Set f(x) = 3(x² - 11x + 24 = 0.

This factors into f(x) = 3(x - 8)(x - 3) = 0.

Then x - 8 = 0 and x - 3 = 0, yielding x = 8 and x = 3.  These correspond to the points (8, 0) and (3, 0).

What is the area of the triangle to the left?
80.4 sq. in
72 sq. in
40.2 sq. in
36 sq. in

Answers

You didn’t list a picture of the triangle

Answer:

There is no image

Step-by-step explanation:

PLEASE!!! I need this turned in tonightttt

Answers

Answer:

8 like I'm trying maybe I'll be good at math someday

Step-by-step explanation:

hehe

janice bought a gift for her friend she placed it with a length 9 of width of 4 and a height of 3

Answers

Is there more to this question or is that it?

I need help with this​

Answers

Answer:

x3x3zexfvvfxrcybubyx3zrcyn

pls help write a rule to represent the sequence then b find a to 9th -8, -16, -32, ...

help will mean alot to me

Answers

Answer:

x2

Step-by-step explanation:

This sequence starts with -8, and is being multiplied by 2 every term

Use SAS to explain why ΔABC ≅ ΔEDC

Answers

Ac=cE
Dc=cB
The angle C is common between two triangles
So ABC=EDC

Which graph does not represent a function

Answers

Answer:

The graph that does not represent a function is;

The first graph of the circle

Step-by-step explanation:

A function is a relationship, rule or law that maps the inputs 'x' the input set 'X' known as the domain, to exactly one output 'y' in the output set 'Y' known as the range

Therefore, a function maps an input to exactly one output

In a graph, the inputs are usually the x-variables, therefore the graph that maps the x-variables (in which an x-variable has) to more than one y-variable is the graph of the circle

In the graph of the circle, we have;

When x = 0 at the origin, y = 0

Similarly

When x = 0 at the maximum point, y = 4

Therefore, the graph of the circle does not represent a function.

Interpreting an Expression
Jerome wrote the following scenario to match the algebraic expression s
4
− 16:

“16 fewer than four times the number of songs on my mp3 player”

Does his scenario match the expression? Explain.

Answers

The scenario does not match the expression, the expression is 4 - 16 so it would be 16 fewer than 4 songs

claire makes a bracelet using blue and red beads. each bracelet has 20 red beads and 5 blue beads. write an ordered pair to represent the number of red beads and blue beads claire will use to make 8 bracelets. (if u even try leaving a link, i’m reporting u) pls help btw i’m in need of help immediately!)

Answers

Answer: (20, 5) or (5, 20)

Explanation: An ordered pair is made up of a set of numbers, one number for each dimension, contained in a set of parenthesis and separated by commas. In this problem, there are two dimension; red beads and blue beads. The ordered pair is comprised of the number of red beads (20) and the number of blue beads (5). Following the format previously described we get the answer (20, 5). You can also write (5, 20) since neither number depends on the other.

What is Pi?
like the numbers

Answers

Answer:

3.14159265359

Step-by-step explanation:

If Sin A = .3642, find the measure of Angle A to the nearest degree.

Answers

Answer:

the measure of angle A to the nearest degree is 36°

The measure of angle A to the nearest degree is 21°.

What are trigonometric identities?

There are three commonly used trigonometric identities.

Sin x = Perpendicular / Hypotenuse

Cosec = Hypotenuse / Perpendicular

Cos x = Base / Hypotenuse

Sec x = Hypotenuse / Base

Tan x = Perpendicular / Base

Cot x = Base / Perpendicular

We have,

We can use the inverse sine function (denoted as sin⁻¹ or arcsin) to find the measure of angle A:

sin A = 0.3642

Taking the inverse sine of both sides, we get:

A = sin⁻¹(0.3642)

Using a calculator, we get:

A ≈ 21.3°

Rounding to the nearest degree, we get:

A ≈ 21°

Therefore,

The measure of angle A to the nearest degree is 21°.

Learn more about trigonometric identities here:

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PLZ PLZ PLZ PLZ PLZ PLZ PLZ PLZ

Answers

Answer:

find the area of sercomfrance

Step-by-step explanation:

8(2x + 3) = PxQ
A. ¿Para cuáles valores de PyQ la ecuación tiene una infinidad de soluciones?
B. ¿Para cuáles valores de PyQ la ecuación no tiene solución?
Recuerda contestar todas las partes de la pregunta en el espacio provisto.​

Answers

Respuesta:

P = 16; Q = 24

P = 0; Q = 0

Explicación paso a paso:

Dada la relación:

8 (2x + 3) = Px + Q

Abra el soporte

16x + 24 = Px + Q

Los valores de P y Q para los que la ecuación tiene infinidad de solución:

Px = 16x

Q = 24

Por tanto, en P = 16; Q = 24, la ecuación tiene infinidad de soluciones.

Valores de P y Q para los que la ecuación no tiene solución:

Px = 0; P = 0

Q = 0

Por tanto, los valores de P y Q para los que la ecuación no tiene solución es 0

Find the image of the point under a
dilation centered at (0,0) with the given
scale factor.
(-4,7)
Scale Factor = 0.2
([?], []).

Answers

Answer:-.8,1.4

Step-by-step explanation:Had this question on my exam hope I helped:))

help meeeee. what does x equal?

Answers

Answer:

[tex]x = 25 \degree \: (alternate \: interior \: angles)[/tex]

Answer:

25 degrees because the angle right on the other side is also 25 degrees

pls tell me what is 10+10

Answers

Answer: it’s 20 hope this helps:)

Step-by-step explanation:

Answer

The answer is 20

Emma has a board 5 feet long and cuts it into 6 equal pieces how long in feet is eacgpeace if the board in a fraction

Answers

Answer:

Imagine an easier version of this problem:  You have a board 5 feet long that you must cut (divide, right?) into two equal parts.  It is probably clear to you that you simply divide the length (5) by the number of parts you're dividing it into (2) to obtain the length of each piece (2.5 feet).

Use the same method for your problem 5 feet divided by 6 is 0.83 feet per piece.

We do not ordinarily divide feet into decimal portions, but instead into inches.  Since an inch is 1/12 of a foot, you could simply say 5/6 = how many twelfths?  or 5/6 = n/12  Solve this by inspection or by cross multiplying 5 times 12 equals n times 6.  So n must equal 10, and your pieces of board are each 10 inches long.

HELP
what is 3^9 x 3^5?

Answers

4782969 is the answer

Answer:

[tex]3^{14}[/tex] or 4,782,969

Step-by-step explanation:

Note that the base are the same (3). In this case, when you are multiplying, add the powers together:

[tex]3^9 * 3^5 = 3^{9 + 5} = 3^{14}[/tex].

~


Help with math ASAP!!!

Answers

I think it’s B! Also have a great day
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