Solve 2x²-x-6=0 by factorisation

Answers

Answer 1

Answer:

x = 2, x = -3/2

Step-by-step explanation:

Factors to be (x-2)(2x+3) = 0

x =2, x = -3/2

Answer 2

Answer:

Step-by-step explanation:

2x²-x-6=0

2x²-(4-3)x-6=0

2x²-4x+3x-6=0

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

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


Related Questions


Will 3in,4in,7in form a triangle.

Will 3in, 4in, 6in form a triangle

Will 1m, 2m, 3m form a triangle
Yes or no

Answers

Answer:

No, Yes, No

Step-by-step explanation:

3in by 4in by 5in will not make a triangle.

3in by 4in by 6in will make a triangle.

1m by 2m by 3m will not make a triangle.

The reason two of these triangles cannot be form is because the side lengths do not adhere to the triangle inequality theorem. This theorem states that the sum of the side lengths of any 2 sides of a triangle must exceed the length of the third side.

prove that the roots of x2+(1-k)x+k-3=0 are real for all real values of k​

Answers

The roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k

The equation is given as:

x^2 + (1 - k).x+k-3 = 0

For an equation to have real root, then the following must be true:

[tex]b^2 \ge 4ac[/tex]

In x^2 + (1 - k).x+k-3 = 0, we have:

a = 1

b = 1 - k

c = k - 3

So, we have:

[tex](1 - k)^2 \ge 4 * 1 * (k - 3)[/tex]

Evaluate

[tex]1 - 2k + k^2 \ge 4k - 12[/tex]

Collect like terms

[tex]k^2 - 2k - 4k + 1 + 12 \ge 0[/tex]

[tex]k^2 - 6k + 13 \ge 0[/tex]

Using a graphing calculator, the value of k is all real numbers

Hence, the roots of x^2 + (1 - k).x+k-3 = 0 are real for all real values of k

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8. Find the value of
8^x/2^y
if 3x - y = 4,

Answers

Hopes this helps:

Answer: 32

1. Simplify 8^3 to 512.
512 / 2^4

2. Simplify 2^4 to 16.
512 / 16

3. Simplify 513 / 16 to 32.
32

what is the answer to y+5<9

Answers

Answer:

I think the answer would be y<4

1.What is the total interest you will have paid for the scenario below?

The home you purchased was sold for $141,000 with a fixed APR of 1.035% across 40 years. The down payment required was 6.0%.
help what is it

Answers

Answer:

la respuesta que buscas es bastante simple pero no lo sé

Step-by-step explanation:

6% of 141,000 is $8460. Subtract 8460 from 141,000= 132,540. Interest=principal x rate x time. 132,540 x 0.01035 x 40 = $54,871.56

what value from the set makes x/6 =18
true?
A.3
B.12
C.54
D.108​

Answers

Answer:

D

Step-by-step explanation:

Plug it in 108 divide by 6

PLEASE HELP QUICKK!!!! TYSM!!! ​

Answers

Answer:

The answer for the question is 3/10

A program to restore an endangered frog species began 8 months
ago. The table shows the population of the species at various
times since the program began.
Month
Number of Frogs
0
11
2
69
4
195
6
547
8
1,231
On average, what has been the monthly change in the frog
population over the last 4 months?

Answers

Answer:

195

Step-by-step explanation:

Therefore, the monthly change in the frog population over the last four months is [tex]195[/tex].

What is the simplification?

Simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.

As per the given information,

The monthly change in the frog population over the last four months is [tex]195[/tex].

Hence, the monthly change in the frog population over the last four months is [tex]195[/tex].

To know more about the simplification

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Suppose that the Celsius temperature at the point (x, y) in the xy-plane is T(x, y) = x sin 2y and that distance in the xy-plane is measured in meters. A particle is moving clockwise around the circle of radius 1 m centered at the origin at the constant rate of 2 m/sec.How fast is the temperature experienced by the particle changing in degrees Celsius per meter at the point?

Answers

Missing information:

How fast is the temperature experienced by the particle changing in degrees Celsius per meter at the point

[tex]P = (\frac{1}{2}, \frac{\sqrt 3}{2})[/tex]

Answer:

[tex]Rate = 0.935042^\circ /cm[/tex]

Step-by-step explanation:

Given

[tex]P = (\frac{1}{2}, \frac{\sqrt 3}{2})[/tex]

[tex]T(x,y) =x\sin2y[/tex]

[tex]r = 1m[/tex]

[tex]v = 2m/s[/tex]

Express the given point P as a unit tangent vector:

[tex]P = (\frac{1}{2}, \frac{\sqrt 3}{2})[/tex]

[tex]u = \frac{\sqrt 3}{2}i - \frac{1}{2}j[/tex]

Next, find the gradient of P and T using: [tex]\triangle T = \nabla T * u[/tex]

Where

[tex]\nabla T|_{(\frac{1}{2}, \frac{\sqrt 3}{2})} = (sin \sqrt 3)i + (cos \sqrt 3)j[/tex]

So: the gradient becomes:

[tex]\triangle T = \nabla T * u[/tex]

[tex]\triangle T = [(sin \sqrt 3)i + (cos \sqrt 3)j] * [\frac{\sqrt 3}{2}i - \frac{1}{2}j][/tex]

By vector multiplication, we have:

[tex]\triangle T = (sin \sqrt 3)* \frac{\sqrt 3}{2} - (cos \sqrt 3) \frac{1}{2}[/tex]

[tex]\triangle T = 0.9870 * 0.8660 - (-0.1606 * 0.5)[/tex]

[tex]\triangle T = 0.9870 * 0.8660 +0.1606 * 0.5[/tex]

[tex]\triangle T = 0.935042[/tex]

Hence, the rate is:

[tex]Rate = \triangle T = 0.935042^\circ /cm[/tex]

How many cubes with the side lengths of 1/4 cm does it take to fill the prism?

Answers

9514 1404 393

Answer:

  224 cubes

Step-by-step explanation:

In terms of 1/4 cm cubes, the dimensions of the prism are ...

  (2 cm)/(1/4 cm/cube) = 8 cubes long

  (7/4 cm)/(1/4 cm/cube) = 7 cubes wide

  (1 cm)/(1/4 cm/cube) = 4 cubes high

The volume in 1/4-cm cubes is ...

  V = LWH = (8)(7)(4) = 224 . . . cubes

224 cubes are required to fill the volume.

Matthew kennedy of urbana, ohio is single and has been working as an admissions counselor at a university for five years. mathhew owns a home values at 250,000 on which he owns 135,000. he has a two year old vehicle valued at 32,000 on which he owes 26,000. he has about 20,000 remaining on hisnstudent loans. his rerirment account has grown to 32,000, and he owns some stock valued at 9,000. matthew has no life insurance and is considering buying some. how much should he buy?

Answers

Answer:

10,000.

Step-by-step explanation:

The solution is, Total assets is 164754.

What is assets?

Assets are resources controlled by the entity as a result of past events and from which future economic benefits are expected to flow to the entity (AAA).

here, we have,

we know,

Mortgage is recorded separated by the home and is treated as liability

Loan & Auto loan are also liabilities of Matthew

Credit cards balances are only his indication of capacity to buy which is if that happens said transaction would result into an obligation of Matthew to pay or simply his liability

we have,

Based on the data given, assets is computed as follows;

Cash (checking account)= 2000

Cash (savings account)= 10000

Home =120000

Investments =12789

Car= 19965

Total assets is = 164754

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complete question:

Matthew currently has $2,000 in his checking account and $10,000 in a savings account. He owns a home worth $120,000 and he owes $75,900 on his mortgage. His investments in a 401(k) are valued at $12,789. He owes $29,526 on his student loans and just bought a new car. The car is currently valued at $19,965. His auto loan balance is $19,156. He is carrying a balance on two credit cards that adds up to $5,234. What is the value of Matthew's total assets? (Do not include the $ sign or commas in your answer).

i can’t figure this one out.

Answers

Answer:

5

Step-by-step explanation:

3/12=x/20

cross multiply

12x=3(20)

12x=60

x=60/12

x=5


8 The length of Adriana's chicken coop is 3x + 12 feet. The length of her garden is
6x – 16 feet. The garden is the length of the chicken coop.
What is the length of the chicken coop? Enter the number of feet only.
What is the length of the garden? Enter the number of feet only.

Answers

Answer:

Rounded down to the nearest foot, the length of the garden is nine feet.

Step-by-step explanation:

We're told that the length of the chicken coop, 3x + 12 feet, is equal to the length of the garden, 6x - 16 feet.  Let's put them together then and solve for x:

3x + 12 = 6x - 16

First, we'll subtract 6x from both sides

3x - 6x + 12 = 6x - 6x - 16

-3x + 12 = -16

Now we subtract 12 from both sides:

-3x + 12 - 12 = -16 - 12

-3x = -28

Finally divide both sides by -3

-3x / -3 = -28 / -3

x = 28/3

x = 9 and 1/3

As the question asks for the number of feet only (not inches), the answer is nine feet.

A third of a foot though is four inches, so the more exact answer is nine feet and four inches, or 9'4"

Please I’m dying to know the answer can anyone help me?

Answers

Answer:

-1/3x+2y=4

Step-by-step explanation:

Substitute the negative reciprocal.

-1/3x+2y=4

What is the value of f(x) when x=3?
0 -3
0-2
0 1
04

Answers

01 is the answer! Hope this help

The value of the function when x=3 is approximately 18.83.

What is a function?

Function is a type of relation, or rule, that maps one input to specific single output.

In mathematics, a function is an expression, rule, or law that describes the relationship between one variable (the independent variable) and another variable (the dependent variable) (the dependent variable). In mathematics and the physical sciences, functions are indispensable for formulating physical relationships.

Linear function is a function whose graph is a straight line

We are given that;

The function

Now,

we need to substitute x=3 into the function and simplify it. We get:

3(3)−1​+(1+3)2

=8​+16

≈2.83+16

=4

Therefore, by the given function answer will be 4.

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50 POINTS QUICK Given that a­­b = x, evaluate the following:

1.) [tex]a^{2b}[/tex]
2.)[tex]a^{b+2}[/tex]

Answers

Answer:

2)The answer is x*a^2 because the equation is saying a^b*a^2. And if we knew that a^b = x, then the answer is x*a^2

Step-by-step explanation:

Juan threw a dart onto the board. Which of the following is most likely?

A. Juan scored 0 points.
B. Juan scored at least 2 points.
C. Juan scored at least 4 points.
D. Juan scored at least 8 points.

Answers

Answer:

I think the answer should be.

B

Answer:

B

Step-by-step explanation:Edg 2021

What is the common denominator of 4/12

Answers

Answer:

lcm of

Step-by-step explanation:

it is 12and 2.........

Does anyone know how to do this

csc x ( sin x + cos x) = 1 + cot x ​

Answers

9514 1404 393

Explanation:

Use the identities ...

  csc(x) = 1/sin(x)

  cot(x) = cos(x)/sin(x)

__

  [tex]\csc(x)(\sin(x)+\cos(x))=1+\cot(x)\\\\\dfrac{1}{\sin(x)}(\sin(x)+\cos(x))=1+\cot(x)\\\\\dfrac{\sin(x)}{\sin(x)}+\dfrac{\cos(x)}{\sin(x)}=1+\cot(x)\\\\1+\cot(x)=1+\cot(x)[/tex]

The sales tax rate is 8.5%. If Helen buys a pillow priced at $18, how much tax will she pay?

Answers

she will pay $1.53 for tax

Answer:

$1.53 for tax

Step-by-step explanation:

18 times .085 = 1.53

1
-
2 x(x-2x+4
Ayuda

Answers

Answer:

Simplified - 2x(-x+4), Solution - -2x(-x+4)

please help me with this ASAP​

Answers

Answer:

32

Step-by-step explanation:

15x+19=2(10x+2)

15x+19=20x+4

19-4=20x-15x

15=5x

x=3

PQ=QN

10x+2=

10(3)+2=

30+2=

32

a map has a scale of 1 cm :15.5 km two cities are 2.3 cm apart on the map. to the nearest tenth of a kilometer,whatis the actual distance corresponding to the map distance​

Answers

Answer is in link

thylakoids.ml/5dHq

what is the equation for the graph below?

Answers

Answer:

ummmm, i cant see the graph

Step-by-step explanation:

Mmm, the graph is blurry

Please answer this problem 3x−9<6

Answers

Answer:

your answer is five

Step-by-step explanation:

and stay safe and happy

Which graph shows a proportional relationship between X and y

Answers

C is correct cause it’s a straight line going through the middle

need help asap provide explanation

Answers

Answer:

B is the correct answer

I can’t find the answer pls help!!

Answers

Answer:

470 x 1.1 = 517

Step-by-step explanation:

Enya is building a storage cupboard in the shape of a rectangular prism. The rectangular prism has a square base with side lengths of 2.6 feet and a height of 3.4 feet. Use percentage to compare the amount of paint she would use to paint all but the bottom surface of the prism to the amount she would use to paint the entire prism. Round your final answer to the nearest tenth.
(I will mark the person who gets the answer correct as brainliest)

Answers

Answer:

89.7 is the percent

Step-by-step explanation:

38.41/43.7=0.879 (87.9%).

f(x) = -x^2- 4x + 10
in the standard form
f(x) = a(x – h)^2 + k

Answers

Answer:

y = - ( x + 2 )² + 14

Step-by-step explanation:

f(x) = ax² + bx + c

f(x) = a(x - h)² + k (where (h, k) are coordinates of the vertex.

h = - [tex]\frac{b}{2a}[/tex]

~~~~~~~~~~~~

f(x) = - x² - 4x + 10

a = - 1, b = - 4, c = 10

h = - [tex]\frac{-4}{2(-1)}[/tex] = - 2

k = - ( - 2)² - 4( - 2) + 10 = 14

(h, k) = ( - 2, 14 )

y = - ( x + 2 )² + 14

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