Worth 10 pts
Plssssssssssssssssss help
Will give brainliest

Worth 10 Pts Plssssssssssssssssss Help Will Give Brainliest

Answers

Answer 1

Answer:  [tex]2\sqrt{2}+\sqrt{3}\\\\[/tex]

a = 2 and b = 1

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

Explanation:

Set the expression equal to the given form we want. Then square both sides so we get rid of the outer-most square root

[tex]\sqrt{11+4\sqrt{6}} = a\sqrt{2}+b\sqrt{3}\\\\\left(\sqrt{11+4\sqrt{6}}\right)^2 = \left(a\sqrt{2}+b\sqrt{3}\right)^2\\\\11+4\sqrt{6} = \left(a\sqrt{2}\right)^2+2*a\sqrt{2}*b\sqrt{3}+\left(b\sqrt{3}\right)^2\\\\11+4\sqrt{6} = 2a^2+2ab\sqrt{2*3}+3b^2\\\\11+4\sqrt{6} = 2a^2+3b^2+2ab\sqrt{6}\\\\[/tex]

In the third line, I used the rule that (x+y)^2 = x^2+2xy+y^2

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

At this point, we equate the non-radical and radical terms to get this system of equations

[tex]\begin{cases}11 = 2a^2+3b^2\\ 4\sqrt{6} = 2ab\sqrt{6}\end{cases}[/tex]

The second equation turns into 4 = 2ab when we divide both sides by sqrt(6)

Then 4 = 2ab turns into ab = 2 after dividing both sides by 2.

We're told that a,b are rational numbers. Let's assume that they are integers (which is a subset of the rational numbers).

If so, then we have these four possibilities

a = 2, b = 1a = -2, b = -1a = 1, b = 2a = -1, b = -2

If a,b are negative, then you'll find that [tex]a\sqrt{2}+b\sqrt{3}[/tex] overall is negative. But this contradicts that [tex]\sqrt{11+4\sqrt{6}}[/tex] is positive. So a,b must be positive.

Let's assume that a = 1 and b = 2. If so, then,

2a^2+3b^2 = 2(1)^2+3(2)^2 = 14

but we want that result to be 11 instead.

Let's try a = 2 and b = 1

2a^2+3b^2 = 2(2)^2+3(1)^2 = 11

which works out perfectly.

Therefore,

[tex]\sqrt{11+4\sqrt{6}} = 2\sqrt{2}+\sqrt{3}\\\\[/tex]

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

Checking the answer:

Use a calculator to find that

[tex]\sqrt{11+4\sqrt{6}} \approx 4.5604779\\\\2\sqrt{2}+\sqrt{3} \approx 4.5604779\\\\[/tex]

both have the same decimal approximation, so this is a fairly informal way to confirm the answer.

Another thing you can do is to take advantage of the idea that if x = y, then x-y = 0

So if you want to see if two things are equal, you subtract them. You should get exactly 0 or something very small (pretty much equal to 0).


Related Questions

Express 5m2 in cm2 please answer fast!

Answers

Answer:

500000 cm2

Step-by-step explanation:

(FIRST CORRECT FOR BRAINIEST) Solve for x

Answers

Answer:

x = 12

Step-by-step explanation:

Angles in a triangle add up to equal 180 degrees

Hence, 10x - 11 + 3x - 2 + 3x + 1 = 180

( note that we just created an equation that we can use to solve for x )

we now solve for x using the equation we created

10x - 11 + 3x - 2 + 3x + 1 = 180

step 1 combine like terms

10 + 3x + 3x = 16x

- 11 - 2 + 1 = -12

we now have 180 = 16x - 12

step 2 add 12 to each side

- 12 + 12 cancels out

180 + 12 = 192

we now have 192 = 16x

step 3 divide each side by 16

16x / 16 = x

192 / 16 = 12

we're left with x = 12

Answer:

x=12

the seniot math wiz already explained it correctly

Question 4 Multiple Choice Worth 1 points)
(01.02 MC)
Solve for :
2 x -
(x - 2) = 4x

Answers

Answer:

[tex]\small \sf \frac{2}{3} = x \\ [/tex]

Step-by-step explanation:

Solve for x;

2x - ( x - 2 ) = 4x

distribute minus sign through parantheses

2x - x + 2 = 4x

combine like terms

x + 2 = 4x

subtract x from both side

x - x + 2 = 4x - x2 = 3 x

Divide each side by 3

[tex] \small \sf \frac{2}{3} = \frac{3x}{3} \\ [/tex]

[tex]\small \sf \frac{2}{3} = x\: \\ [/tex]

Someone help me on this Problem !!

Answers

Answer:

[tex] \frac{1}{2} [/tex]Negative1 divided by 1 = 12 divided by 4 = 2

#Correct me if I'm wrong#Hope it's Help

Answer the one that’s is blank

Answers

5x + 15 = 15 + 5x

5x = 5x

x = x

?

1. 5x + 15 = 5x + 15

2. 5x = -15

3. x = -3

Hope it helps!

Please help…………………………

Answers

Answer:

Step-by-step explanation:

angle 2 is also 60 degree (being vertically opposite angles)

angle 3 is also 60 degree (being corresponding angles)

angle 4 is also 60 degree (being corresponding angles ) . sice angle 2 is 60 degree and relation between  angle 2 and 4 is corresponding angle , angle 4 will also be 60 degree.

x² + 8x + 16 =

I need the steps and the answer
and the box ​

Answers

Answer:

The answer is (x+4)

Step-by-step explanation:

Just write the expression as a product with the factor x and 4

x²+2×x×4+4+16

then write the number in the exponential form with an exponent of 2

x²+2×x×4+4²

then use a² +2ab +b² = (a+b)² yo factor the expression which you get (x+4)

A 3050 foot long road travels directly up a 550 foot tall hill. Select the equation that can be used to solve for the angle of elevation (0) from the bottom of the hill.

Answers

Answer:

d is the answer sin =3000/3050

A fruit juice recipe uses three ingredients. Two of the ingredients use a ratio of 2 ounces of pineapple juice to 5 ounces of fruit punch. Part A: Grape a line on the coordinates plane to represent this relationship

Part B: Create an equation to represent this relationship. Let x represent ounces of pineapple juice. Let y represent ounces of fruit punch.

Answers

Answer:

(a) See attachment

[tex](b)\ y =2.5x[/tex]

Step-by-step explanation:

Given

[tex]x \to pineapple[/tex]

[tex]y \to fruit[/tex]

[tex]x : y =2 : 5[/tex]

Solving (a): The graph

First, we create an equation from [tex]x : y =2 : 5[/tex]

Express as fraction

[tex]\frac{x }{ y} =\frac{2 }{ 5}[/tex]

Cross multiply

[tex]2y = 5x[/tex]

See attachment for graph

Solving (b): An expression that represents the relationship

In (a), we have:

[tex]2y = 5x[/tex]

Divide by 2

[tex]y = \frac{5}{2}x[/tex]

[tex]y =2.5x[/tex]

Which compound inequality is represented by the graph?

Answers

Answer:

The answer would be [tex]x < -2[/tex] OR [tex]x \ge 4[/tex].

Step-by-step explanation:

Do pay attention to the hollow circle from which [tex]x < -2[/tex] is found; that means the value of x does not include -2, and therefore the < sign is used.

Hope this helped!

hmmmmmmmm

hope it helps

A school is ordering chairs for the teacher's lounge and some of the classrooms. Each classroom needs 17 chairs, while the teacher's lounge needs 16.

Let n represent the number of classrooms included in the order and c represent the total number of chairs. Complete the table using the relationship between n and c.

Answers

5515828288777776677

12

Matilda and Lorraine work in the mail room of a large company sorting letters. Matilda has already sorted 50 letters and continues sorting at a rate of 50 letters per hour. Lorraine has already sorted 80 letters and continues sorting at a rate of 40 letters per hour.

Which function can Matilda and Lorraine use to determine the total number of letters they have sorted after x hours? How many letters will they have sorted after 6 hours?

A.
The function that describes the total number of letters sorted by Matilda and Lorraine in x hours is given by f(x) = 100x + 120. Thus, they will have sorted 720 letters in 6 hours.
B.
The function that describes the total number of letters sorted by Matilda and Lorraine in x hours is given by f(x) = 90x + 130. Thus, they will have sorted 670 letters in 6 hours.
C.
The function that describes the total number of letters sorted by Matilda and Lorraine in x hours is given by f(x) = 130x + 90. Thus, they will have sorted 870 letters in 6 hours.
D.
The function that describes the total number of letters sorted by Matilda and Lorraine in x hours is given by f(x) = 90x + 30. Thus, they will have sorted 570 letters in 6 hours.

Answers

Answer:

B

Step-by-step explanation:

40x + 80

50x + 50

add them together

PLEASE HELP!!
(help me find the type of statement)

Answers

The proof of the given statement below.

What is Congruency?

Congruent triangles are triangles that have the same size and shape. This means that the corresponding sides are equal and the corresponding angles are equal.

In ΔDEA and ΔCEA

<DEA= <CEA    [Vertically opposite angle]

<ADE= <ACE    [given]

AD= CA    [given]

Thus, by ASA criteria ΔDEA is congruent to ΔCEA.

Hence, AE = BE [ CPCT]

Learn more about this concept there:

https://brainly.com/question/20521780

#SPJ1

Find the unknown length in the picture below please help

Answers

Answer:

x = 12.65

Step-by-step explanation:

The angle between radius and tangent is 90°

Given diameter is 6, so radius = 3.

Then we use Pythagoras theorem

What is the missing value in the last step? 3 6 9 18

Answers

the awnser is D on edge 2020

Answer:

D

Step-by-step explanation:

edge 2021

PLZ HELP ASAP DUE IN 10 MINS I WILL MARK BRAINLIEST!!!!

Answers

Answer:

15/8

Step-by-step explanation:

Applying

tanθ = Opposite(O)/Adjacent(A)

tanθ = O/A............ Equation 1

From the diagram,

To get the opposite(O), we apply pythagoras theorem

a² = b²+c²

Where c = opposite

17² = 8²+c²

289 = 64+c²

c² = 289-64

c² = 225

c = √225

c = 15

Substitute into equation 1

Therefore,

tanθ = 15/8

Hence the exact value of tanθ is 15/8

Quadrilateral ABCD has coordinates A(3,-5), B(5,-2), C(10,-4), D(8,-7). Quadrilateral is a

Answers

Answer:

Quadrilateral is another word for a shape with four sides.

Step-by-step explanation:

Answer:

Parallelogram

Step-by-step explanation:

AB=CD

AD=BC

BD not equal to AC (Diagonals are not equal)

AB not equal to BC (Adjacent sides are not equal)

Thus the quadrilateral is parallelogram

Brainliest please

Name the marked angle in 2 different ways.

Answers

Answer:

∠XWV ∠UWV

Hope this helps! :)

What is the common difference for this arithmetic sequence? 45,39,33,27,21,...

Answers

Answer:

I expect the correct answer

_6

.

Answer:

6

Step-by-step explanation:

because if u minus 39 from 45 u get six and same for the others

Help for brainliest
Find h.
9 ft
h = [?] ft

Answers

Answer:

[tex]\sqrt{77}[/tex] ft

Step-by-step explanation:

Hi there!

Notice how we can create a right triangle in the cone, where the base is 2 ft (4/2=2), the height is h and the hypotenuse is 9 ft.

Using these values, we can solve for h with the Pythagorean theorem: [tex]a^2+b^2=c^2[/tex] where a and b are the two legs of a right triangle and c is the hypotenuse.

Plug in 2 and h as a and b and 9 as c:

[tex]2^2+h^2=9^2\\4+h^2=81\\h^2=81-4\\h^2=77\\h=\sqrt{77}[/tex]

I hope this helps!

What is the value of y?

16
50
130
164

Answers

Answer:

where is the figure

Step-by-step explanation:

u should upload the figure too

Answer:

C. 130

Step-by-step explanation: Hope it helps ^w^

please help, giving points and brainlest !!​

Answers

Answer:

(7,-8)

Step-by-step explanation:

it's a reflection off the x-axis correct me if im wrong i can barely see

Answer:

(7,-8)

Step-by-step explanation:

Point A is at (7,8).

the x-axis is the horizontal line.

Point A is 8 units up of the x-axis so the reflection would be down 8 units from the x-axis in the same line.

Hope this helps.

The volume of water remaining in a tank after 10 of its original volume (x) is drained out

Answers

Answer:

x - 10

Step-by-step explanation:

The original volume is x, and 10 is removed.

In mathematical terms, this is expressed as x - 10.

Simplify 3a²b³x 4a³b

Answers

The answer will be: 12a^5b^4
The answer is 12a5b4

I need help with questions 11 and 12 please!

Answers

Q11: angle EFG = 90°

angle GDH = 90°÷2

= 45°

angle FEG = 90°÷2

= 45°

angle DHG = 180°-45°-45°

= 90°

Q12. (6x-21)°=90°÷2

=45°

6x=45°+22°

=67°

x=67°÷6

=11/1/6°

hope it helps:)))))

Find the range of the graphed function. ​

Answers

Answer:

-6 ≤ y ≤ 9

Step-by-step explanation:

Answer:it’s d

Step-by-step explanation:

please give the answer if your answer will be correct I promise that will mark as brainliest​

Answers

Answer:

4 1/2 : 2 1/4

Divide both sides by 2 1/4

2 : 1

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

3 months : 1 year

1 year = 12 months

3 : 12

Divide both sides by 3

1 : 4

4÷1×2 it the answer and questions

The function A(b) relates the area of a trapezoid with a given height of 14 and one base length of 5 with the length of its other base. It takes as input the other base value, and returns as output the area of the trapezoid. A(b)=14xb+5/2 Which equation below represents the inverse function B(a), which takes the trapezoid's area as input and returns as output the length of the other base? A. B(a)+a/7+5 B. B(a)=a/5-7 C. B(a)=a/7-5 D. B(a)=a/5+7

Answers

Answer:

[tex]b(a) =\frac{a}{7} -5[/tex]

Step-by-step explanation:

Given

[tex]A(b) = 14 * \frac{b + 5}{2}[/tex]

Required

Determine the inverse function b(a)

Write A(b) as a

[tex]a = 14 * \frac{b + 5}{2}[/tex]

Swap a and b

[tex]b = 14 * \frac{a + 5}{2}[/tex]

[tex]b = 7(a + 5)[/tex]

Divide both sides by 7

[tex]a + 5 = \frac{b}{7}[/tex]

Maka a the subject

[tex]a =\frac{b}{7} -5[/tex]

Swap a and b again

[tex]b =\frac{a}{7} -5[/tex]

Hence:

[tex]b(a) =\frac{a}{7} -5[/tex]

Select the two values of x that are roots of this equation. 3x - 5 = -2x2

Answers

Answer:

C and A are the answer

Step-by-step explanation:

step by step

Pls help ..
if A =
[4 3] is a singular matrix, find 'a'
[ a 3]​

Answers

Answer:

a = 4.

Step-by-step explanation:

We know that:

[tex]A = \left[\begin{array}{ccc}4&3\\a&3\end{array}\right][/tex]

is a singular matrix, now we want to find the value of a.

We know that a matrix is singular if:

Det [A] = 0

Where remember that the determinant of a 2x2 matrix is given by:

[tex]M = \left[\begin{array}{ccc}k_{11&k_{12\\k_{21}&k_{22}\end{array}\right]\\\\det[M] = k_{11}*k_{22} - k_{12}*k_{21][/tex]

Then the determinant of A is:

Det [A] = 4*3 - a*3

and that must be zero, so:

4*3 - a*3 = 0

Now we just need to find the value of a:

12 - a*3 = 0

12 = a*3

12/3 = a

4 = a

So the value of a is 4.

Other Questions
Please help!?Use DEF, shown below, to answer the question that follows: What is the value of x rounded to the nearest hundredth? Type the numeric answer only in the box below Choose the function whose graph is given by: A. y=tan(x+1)-pi B. y=tan(x-pi)-1 C. y=tan(x-pi)+1 D. y=tan(2(x+pi))-1 12. The length and width of a rectangle are in the ratio 7:3. If the perimeter is 62cm calculate: (1) the width (ii) the length of a diagonal to the nearest centimetre. (iii) the area of the rectangle. 2. Si x representa la edad de Ana, cmo seescribe en simbolos "la mitad de la edad deAna"? what is the third mammalian feature Following is selected financial information from General Mills Inc. for its fiscal year ended May 27, 2018 ($ millions). Cost of goods sold (COGS) $14,438.1 Cash from operating activities $3,977.4 Cash from investing activities (12,159.6) Noncash assets, end of year 42,315.0 Cash, end of year 558.6 Cash from financing activities* 7,668.2 Income tax expense 80.2 Total assets, beginning of year 30,537.6 Revenue 22,036.6 Total liabilities, end of year** 33,784.2 Total expenses, other than COGS 4,490.1 Stockholders' equity, end of year 9,089.4 and income tax * Cash from financing activities includes the effects of foreign exchange rate fluctuations. ** Total liabilities includes redeemable interest. a. Prepare the income statement for the year ended May 27, 2018. Note: Do not use negative signs with any of your answers. General Mills Income Statement ($ millions) For the year ended May 27, 2018 Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer Answer b. Prepare the balance sheet as of May 27, 2018. General Mills Balance Sheet ($ millions) May 27, 2018 Answer Answer Answer Answer Answer Answer Answer what if cars did not exist plz be original Who participated in the debate over the meaning of freedom? What role did African Americans play? What role did lawmakers play (both federally and in the states)? Italy and Japan entered the war on the side of Which sentence, if added, would make the best revision of the conclusion? "Where is the main trail?" I asked while searching the map. After surviving those miserable hours in the desert, I learned the value of being prepared. My friends invited me to go for a hike, and although it was a hot summer day, I agreed to go, because I had nothing else to do. "Be sure to drink some water," Tara reminded u what time did he reach ??? In the mirror diagram shown, which is the normal?D Suppose that Dmitri, an economist from a research institute in Texas, and Frances, an economist from a public television program, are arguing over saving incentives. The following dialogue shows an excerpt from their debate: Frances: I think it's safe to say that, in general, the savings rate of households in today's economy is much lower than it really needs to be to sustain an improvement in living standards. Dmitri: I think a switch from the income tax to a consumption tax would bring growth in living standards. Frances: You really think households would change their saving behavior enough in response to this to make a difference.Because I don't. The disagreement between these economists is most likely due to _____. Depite their differences, with which proposition are two economists chosen at random most likely to agree? A. Employers should not be restricted from outsourcing work to foreign nations. B. Central banks should focus more on maintaining low unemployment than on maintaining low inflation. C. Business managers can raise profit more easily by reducing costs than by raising revenue. describe the word environment In the 1400s, Spain and Portugal were competing to explore down the coast of Africa and find a sea route to Asia. That w... A parallelogram has sides 8 ft and 6 ft and an area of 54 ft 2. What is the length of thealtitude to the 8-ft base? Andre is running in an 80-meter hurdle race. There are 8 equally-spaced hurdles on the race track. The first hurdle is 12 meters from the start line and the last hurdle is 15.5 meters from the finish line. Estimate how far the hurdles are from one another. Do not include units (meters) in your answer. Round your answer to the nearest whole meter. plzzzzzzzzzzzzzzz help How is the nitrogen cycle important to humans?O It produces free nitrogen that humans can breathe.O It converts nitrogen into a form that humans can obtain by eating other organisms.o It produces nitrogen compounds that humang can breathe.O It converts nitrogen into a form that humans can obtain by absorbing it through their skin. El poema "Cultivo Una Rosa Blanca" habla sobre la amistad. Podemos ver que el poeta cultiva una rosa para los amigos que estn siempre a su lado y que l los tiene siempre presentes. Por otra parte, el autor tambin cultiva rosas blancas para esas personas que no le fueron fieles y que le hicieron mal. De esta manera l est diciendo que les da una segunda oportunidad o que los perdona para vivir sin rencores y tranquilo con sigo mismo. El autor atiende tanto a sus amigos como a aquellos que le han fallado tenindolos en cuenta y rindindoles un homenaje cultivando una rosa blanca. John doe and jane doe want to have children and are thinking about how their children's hands might look. What would their children look like if they're both heterozygous for straight pinky and hitchhikers thumb?