If a=2-√5/2+√5 and b=2+√5/2-√5 find (a+b)³

Answers

Answer 1

Step-by-step explanation:

really ? you need help here ... - that means you did not even look at it once ...

a = 2 - sqrt(5)/2 + sqrt(5)

b = 2 + sqrt(5)/2 - sqrt(5)

a + b = 2 + 2 = 4 (the rest add up to 0)

(a+b)³ = 4³ = 64

Answer 2

Answer:

64

Step-by-step explanation:

Given :

a = 2 - √5/2 + √5b = 2 + √5/2 - √5

Evaluating (a + b)³ :

(2 - √5/2 + √5 + 2 + √5/2 - √5)³(2 + 2 - √5/2 + √5/2 + √5 - √5)³(4)³64

Related Questions

A textbook has `428` numbered pages, starting with 1.



You are equally likely to stop on any of the pages if you flip through the book randomly.



If you repeat this experiment `50` times, about how many times do you expect to turn to an even-numbered page?

Answers

You would expect to land on an even numbered page 25 times because there is an equal number of odd and even pages.

higher level thinking cell phone plan is shown on the right. Prices, which include an unlimited data plan, are the same every month for 7 months. The total cost for all seven months is $180.39. Let m be the average number of minutes exceeding 700 minutes each month. 700 minutes talked: $19.70 per month Every minute over 700 minutes: $0.05 per minute A. Write an equation to represent the given situation

Answers

Equation to represent the given situation :

7(19.70 + 1.97 + m X 0.05) = 180.39,

What is Linear Equation?

A linear equation is an algebraic equation of the form y=mx+b. involving only a constant and a first-order (linear) term, where m is the slope and b is the y-intercept.

Given that:

Total cost for 7 month =$180.39

Let m be the average number of minutes  that exceeds 700 minutes each month.

Equation :

7(19.70 + 1.97 + m X 0.05) = 180.39,

or,  7(19.70 + 1.97 + m X 0.05) = 180.39,

or, 21.67 + 0.05m = 180.39/ 7,

or, 0.05m = 25.77 – 21.67,

0.05m = 4.1

m= 82

Hence,  equation to represent the given situation : 7(19.70 + 1.97 + m X 0.05) = 180.39.

Learn more about this concept here:

https://brainly.com/question/15101949

#SPJ1


Find the 58" term of the following arithmetic sequence.
7, 15, 23, 31, …

Answers

See the file attached!!

Hope it helps:)

a farmer is able to harvest 300 kg of potatoes in 5 hrs.how many kilos will 3 farmers harvest in 10hrs?

Answers

Answer:

1800 kg

Step-by-step explanation:

1 farmer is able to harvest 300 kg of potatoes in 5 hrs

Then

1 farmer is able to harvest (300×2 = 600) kg of potatoes in 10 hrs

therefore,

3 farmers are able to harvest (600×3 = 1800)kg of potatoes in 10 hrs

The length of a rectangle is 3 times the
width. Find the dimensions of the
rectangle if its perimeter is 16 cm.

Answers

Step-by-step explanation:

length = 3×width

2×length + 2×width = 16

length + width = 8

we can use the first equation in the second :

3×width + width = 8

4×width = 8

width = 2 cm

therefore,

length = 3×width = 3×2 = 6 cm

the value of a varies directly as the square of the value of b, and b=3 when a=10. Find the value of a when b=9.

Answers

Answer:

answer = 90

Step-by-step explanation:

General equation:  a = k*b^2

Specifically:          10 = k*(3)^2 = 9 k

Solving for k:  k = 10/9

Then a = (10/9)b^2.    If b = 9, then a = (10/9)(9)^2 = 90 (answer)

Which choice is equivalent to the expression below? Use the FOIL method.
(√x-2)(√x + 3)

A) x-6
B) x+√x +6
C) x-√x -6
D) x+√x-6

Answers

Answer:

D)  x + √x - 6.

Step-by-step explanation:

(√x-2)(√x + 3)

= √x*√x + 3*√x - 2*√x - 2*3

= x + √x - 6.

Which is a diagonal through the interior of the cube?

BE
CF
DG
GF​

Answers

Answer:

CF is a diagonal through the interior of the cube.

in descending order: 0.03, 1.03, 0.13, 1.13​

Answers

Answer:

1.13, 1.03, 0.13, 0.03

.....

Answer:

1.13, 1.03, 0.13, 0.03.

Step-by-step explanation:

Highest value is 1.13 and lowest is 0.03.

Math question help pls

Answers

Answer:

the circumference of the circle is 50.24

The Smith family bought 25 raffle tickets
for a drawing sponsored by the Boys'
Club. If 1000 tickets were sold, which
fraction represents the Smiths' chance of
winning?
(1)
975
1
1
(2) 25
(
(3)
1
40
(4)
1
400
(5) 975
5

Answers

Answer:1/40

Step-by-step explanation: If the Smiths bought 25 raffle tickets, and there were 1000 sold in total, it would mean they have a 25/1000 chance. we can simplify 25/1000 into 1/40. Therefore, the answer is (3)

Which term refers to when there are excessively large amounts of people in a specific area, which limits access to resources?
A. Population
B. Migration
C. Refugee
D. Overpopulation

Answers

Answer:

D. Overpopulation

Step-by-step explanation:

Overpopulation is the number of a people in an area exceeds the capacity of the environment to support life at a decent standard of living. When there is a population exceeding the amounts of resources that are provided, it can cause issues as there are nonrenewable resources meaning that there is limited resources for everyone. This is bad as it can become a crisis.

Polygon with exactly one line of symmetry label the line of symmetry

Answers

Answer:

Kite

Step-by-step explanation:

Kite. A kite has one line of symmetry

Someone please check my work 1-4 please, correct my answers if they are incorrect. Thank you.

Answers

i think all of your answers should be correct, but i think you should label them specifically (ex. 600$ in stock) and also maybe on the first two questions say that dorris miscalculated by 125$ and like explain how a bit better

Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y = 5x/6 +5

Step-by-step explanation:

Points (-6,0) and (6,10)

Getting the slope

m = 10-0/6- (-6)

m=10/12

m=5/6

Solving for the equation:

where (-6,0) :

y-y1=m (x-x1)

y-0 = 5/6 (x- (-6))

y = 5/6 (x-+6)

y = 5x/6 +5

Answer:

y = 5x/6  + 6

Step-by-step explanation:

equation of a line is y = mx +b

m is the slope.

m = (y2- y1)/(x2-x1)

if we choose any two points in the line of the image..

p1 (6,10) -> x2 is 6, y2 is 10

p2 (0,5) -> x1 is 0, y2 is 5

m = (10-5)/(6-0)

m = (5)/(6)

m = 5/6

b is calculated when x = 0. (Where the line intercepts the y axis), Looking at the line in the image I can see that y = 6 when x = 0, so b =  6.

We have then

y = mx +b

y = (5/6)x  + 6

y = 5x/6  + 6

Identify the steps for proving ADDC.
A. 1. BD BD by the reflexive property
2. AABD=ACBD by SAS
3. ADDC by CPCTC
B. 1. BD BD by definition of an isosceles triangle
2. AABD = ACBD by SAS
3. ADDC by CPCTC
C. 1. BD BD by the reflexive property
2. AABD = ACBD by CPCTC
3. ADDC by SAS
D. 1. BD BD by definition of an isosceles triangle
2. AABD = ACBD by CPCTC
3. ADDC by SAS

Answers

I thinks it’s BD BD by reflex is

This is geometry help me

Answers

Answer:

Step-by-step explanation:

Remark

9.3 x and 60 degrees are all related to the Tangent of L or Tan(L) as you would find it on your calculator.

Givens

Opposite = 9.3Adjacent = xTheta = 60

Formula

Tan(60) = opposite / Adjacent                Substitute Values

Solution

Tan(60) = 9.3 /  x                                      Multiply both sides by x

x*Tan(60) = x * 9.3 /x              

x* Tan(60) = 9.3                                         Divide both sides by Tan(60)

x * Tan(60) / Tan(60) = 9.3/Tan(60)

x = 9.3 / 1.7321

x = 5.369

Answer

x = 5.4                              

The radius of a circle with an area of 60 square centimeters is represented by the expression StartRoot StartFraction 60 Over pi EndFraction centimeters. What is another way of expressing the radius?
2 StartRoot 15 pi EndRoot
4 StartRoot 5 pi EndRoot
StartFraction 2 StartRoot 15 pi EndRoot Over pi EndFraction
StartFraction 4 StartRoot 5 pi EndRoot Over pi EndFraction

Answers

Answer:

C) StartFraction 2 StartRoot 15 pi EndRoot Over pi EndFraction

Step-by-step explanation:

Given circle with area of:

A = 60 cm²

Find its radius

A = πr² ⇒ A/π = r² ⇒ √(A/π) = r ⇒ r = √(A/π)

Substitute the values and find the value of r:

r = √(60/π) = 2√(15/π) = 2√(15π) / π

Now compare this with answer choices:

A) 2 StartRoot 15 pi EndRoot ⇒ 2√(15π), incorrect

B) 4 StartRoot 5 pi EndRoot ⇒ 4√(5π), incorrect

C) StartFraction 2 StartRoot 15 pi EndRoot Over pi EndFraction ⇒ 2√(15π) / π, correct

D) StartFraction 4 StartRoot 5 pi EndRoot Over pi EndFraction ⇒ 4√(5π) / π, incorrect

Answer:

c

Step-by-step explanation:

What Study Design method was used in the situation?
Scenario: A psychology professor is trying to determine if people in a heightened state of fear tend to have
negative views of society. The professor has 200 participants and divides them into groups based on both race
and gender. The professor then selects names from each group and places them into either the study group or
control group. The participants placed in the study group are shown scary movies then asked a series of
questions about how they feel about different societal issues. The participants placed in the control group are
asked how they feel about different societal issues.

A) Simulation

B) Experiment

C) Observational Study

D) Questionnaire

Answers

Answer:

What Study Design method was used in the situation?

Scenario: A psychology professor is trying to determine if people in a heightened state of fear tend to have

negative views of society. The professor has 200 participants and divides them into groups based on both race

and gender. The professor then selects names from each group and places them into either the study group or

control group. The participants placed in the study group are shown scary movies then asked a series of

questions about how they feel about different societal issues. The participants placed in the control group are

asked how they feel about different societal issues.

A) Simulation

B) Experiment

C) Observational Study

D) Questionnaire

Answer:

A is the answer just you the process of elimination

what is four minus three

Answers

Answer:

1

Step-by-step explanation:

4-3 = 1

Answer:

1

Step-by-step explanation:

4-3=1

If you had 4 lollipops and you gave your friend 3 lollipops, how many would you have? 4-3=1 You could try it out at home.

Comedy Drama Action Horror
Day 1 5 7 3 1
Day 2 2 11 4 5

5. Based on the above chart, which conclusion can be drawn from the data?

a. Horror is the most popular genre.
b. Drama is the most popular genre.
c. People like comedies because they like to laugh.
d. People don’t like horror movies because they don’t like to be scared.

Answers

Answer:

B. Drama is the most popular genre

Step-by-step explanation:

Day 1:

⇒ Comedy: 5

    Drama: 7

    Action: 3

    Horror: 1

Day 2:

⇒ Comedy: 2

    Drama: 11

    Action: 4

    Horror: 5

With this information we can start ruling out our answer choices.

A. horror is the most popular genre

Lets see, both of the sum of both days for Horror is 6, for Action is 7, Drama is 18, and Comedy is 7, with this we can conclude that horror is actually the least popular genre

B. Drama is the most popular genre

Using the information we gathered previously, we know Drama is the most popular genre, therefore this option is a high possibility.

C. People like comedies because they like to laugh

Although, I personally love comedies for this reason, this chart does not prove that people like comedies for this reason.

D. People don't like horror movies because they don't like to be scared

As for option C, the chart does not prove that is the case!

Therefore we can conclude that option B is the best choice.

This figure represents a small paperweight that is to be covered on all sides with a plaid fabric.

How much fabric is needed to cover the paperweight?

Enter your answer as a decimal in the box.

cm²

HELP ASAP 50 POINTS!!!!

Answers

Find total surface area

L=4.5cmB=5cmH=3.5cm

Now

TSA

2(LB+BH+LH)2(4.5×5+3.5×5+3.5×4.5)2(55.75)111.5cm²

Answer:

111.5 cm²

Step-by-step explanation:

Fabric needed to cover paperweight = Surface Area

Surface Area

2(LH + BH + LB)2(5 x 3.5 + 4.5 x 3.5 + 5 x 4.5)2(17.5 + 15.75 + 22.5)2(55.75)111.5 cm²

Can you guys help me please :(

Answers

Answer:

720 m²

Step-by-step explanation:

Area = base × height

= 12 × 6

= 72 mm²

≈ 720 m² (1 mm = 10 m)

Anyone can help please

Answers

I don’t know if I’m seeing the whole problem but what I can say is
x = < 3 because it’s vertical.
x = < 4 because it’s corresponding angles.
x = < 7 because it’s Alt. Exterior

Frank bought a pair of gloves for $9.95 and a hat for $5.25. What is the best estimate of much he spent?
$15.00
$10.00
$5.00
$25.00

Answers

Answer:

$ 15.00

Step-by-step explanation:

9.95  is JUST about 10

5.25 is close to 5

                      10 + 5 = 15

Help me with the 2 problems

Answers

Yes because 484 + 484 equals 964
And equation you should always do the opposite of the sign you get to find your answer so he got minus he should use Addition

9.

no

he has to put -484 to the left of the equal sign too

z + 484 -484 = 964 - 484

z = 480

10.

a.

310,000 + x = 465,000

x = 465,000 - 310,000

x = 155,000

b.

310,000x = 930,000

x = 930,000 ÷ 310,000

x = 3

help us please we need your help

Answers

Answer:

See below ~

Step-by-step explanation:

3. coordinate proof

4. exterior

5. included angle

Answer:

coordinate proof

exterior

included angle

2. The bases of the trapezisid (x-14) cm and (x+2) cm ats medien is 30 cm long, how long is the shorter base​

Answers

Answer:

22cm

Step-by-step explanation:

Formula:

MEDIAN = 1/2(B1+B2)

Solution:

30= 1/2[(x-14)+(x+2)]

x = 36 cm

B1= 36-14 = 22 cm (shorter base)

B2= 36+2 = 38 cm (longer base)

The Shorter Base is 22cm.

find the area of a square whose perimeter is 840m

Answers

Answer:

Area of square = 44,100 m²

Step-by-step explanation:

Given :-

Perimeter of square = 840 cm

To find :-

Area of sqaure

Solution :-

The find area of sqaure firstly we need to find the length of each side of the sqaure.

We know that,

Perimeter of rectangle = 4 × side

840 = 4 × side

840/4 = side

210 m = side

Side of square is 210 m

→ Area of rectangle = (Side)²

→ Area = (210)²

→ Area = 44,100 m²

Hence, Area of the square is 44,100 m²

Hey ! there

Answer:

Area of square is 44100 m² .

Step-by-step explanation:

In this question we are provided with a square having perimeter of square 840 m . And we are asked to find the area of square .

For finding area of square we need to find the side of square . So , we are finding the side of square by assuming it as " x " metres and then equating it with given perimeter that is 840 m .

We know that ,

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

[tex] \qquad \quad \underline{\boxed{\frak{Perimeter_{(Square)} = 4 \times Side }}}[/tex]

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

SOLUTION : -

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

Finding Side ,

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

Substituting value of side as x in formula and equating it with 840 :

[tex] \quad \longmapsto \qquad \: 4 \times x = 840[/tex]

or ,

[tex] \quad \longmapsto \qquad \:4x = 840[/tex]

Dividing with 4 on both sides :

[tex] \quad \longmapsto \qquad \: \dfrac{ \cancel{4}x}{ \cancel{4}} = \cancel{ \dfrac{840}{4} }[/tex]

We get ,

[tex] \quad \longmapsto \qquad \: \underline{\boxed{\frak{x= 210 \: m}}}[/tex]

Therefore , SIDE of square is " 210 " metres .

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

Finding Area ,

‎ ‎ ‎ ‎ ‎ ‎ ‎

We know that ,

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

[tex] \: \qquad \: \qquad \: \underline{\boxed{\frak{Area_{(Square)} = Side {}^{2} }}}[/tex]

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

Now , substituting value of side as 210 in formula :

[tex] \quad \dashrightarrow \qquad \: (210) {}^{2} [/tex]

or ,

[tex] \quad \dashrightarrow \qquad \:210 \times 210[/tex]

Multiplying 210 two times , We get :

[tex] \quad \dashrightarrow \qquad \:\blue{\underline{\boxed{\frak{44100 \: m {}^{2} }}}} \quad \bigstar[/tex]

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

Henceforth , AREA of square having perimeter 840 m is 44100 square metres

‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎

#Keep Learning

Can someone actually HELP me

Answers

Answer:

See below

Step-by-step explanation:

This is two parallel lines crossed by a TRANSVERSAL forming angles 1 - 8 , which are ALL transversal angles .

Angle 2 = angle 6 = angle 4 = angle 8   (congruent)

Angle 1   and  angle 3  and angle 5  and angle 7 are also all equal

A 'straight angle' is a straight line and has a measure of 180 degrees

    look at  angle   1    and angle  2   ....they add up to a straight line = 180 degrees      or angle 1  and angle 6      angle 1 and angle 4    each add to 180 degrees

Any angle in the underlined list above added to any angle in the bold list from above  add to 180 degrees ....

Answer + Step-by-step explanation:

Angles 2 and 6 are transversal and congruent . (True) (Reason : Corresponding angles)

Angles 1 and 7 are transversal and congruent .  (True) (Reason : Alternate Exterior Angles)

Angles 4 and 6 are transversal and congruent .  (True) (Reason : Alternate Interior Angles)

Angles 5 and 7 are transversal and congruent .  (True) (Reason : vertically opposite Angles)

What degree is a straight angle ?  (180 degrees)

What would angles 1 and 6 add up to ?  (180 degrees)

What would angles 8 and 3 add up to ? (180 degrees)

………………………………………………………………………………………

Angles W and Z add up to ?  (180 degrees)

The sum of the 3 angles in a triangle (180 degrees)

Angle Z equals what measure ? (180 - (60+45) = 180 - 105 = 75 degrees)

Angle W equals what (180 - Z = 180 - 75 = 105 degrees)

Other Questions
Hoping to increase pizza sales on Tuesdays, a new pizza restaurant prints and disperses the following coupon through email and fliers in a neighborhood marketing magazineAfter ten weeks of the coupon offer, the owner of the restaurant needs to decide if the restaurant should continue to run the same special or offer a new one. Use the data collected in the table to determine whether or not the coupon appears to be generating sales for the restaurant.Week TotalSales1 $8592 $1,1763 $1,4804 $1,3655 $1,5766 $1,4987 $1,1808 $1,9649 $1,63410 $1,580Part A: dont answer Part B: Use the total sales for weeks 4 and 9 to write an equation for the line of best fit. In your final answer, include all of your calculations.Part C: in terms of the slope of the equation for the line of best fit, explain whether or not you think the coupon is responsible for the restaurant's increase or decrease in pizza sales on Tuesdays. Use complete sentences in your answer.Part D: Assuming that the pizza restaurant wishes to continue the coupon for an additional five weeks, use the equation for the line of best fit to predict the restaurant's sales for the Tuesday of the 15th week. The shortest sides of two similar polygons have lengths in the ratio 2:5. the perimeter of the smaller polygon is 20. the perimeter of the larger polygon is 125 100 50 9x-3-8x=7-x solve for x Given right triangle abc with altitude bd drawn to hypotenuse ac. if ad = 8 and dc = 32, what is the length of bd? One characteristic of postmodernism is a sense of uncertainty about the future. What do you think people are uncertain about in todays society when they look toward the future? Discuss at least two aspects. PLSSS HELP IF YOU TURLY KNOW THISS What is the quotient? startfraction 2 y squared minus 6 y minus 20 over 4 y 12 endfraction divided by startfraction y squared 5 y 6 over 3 y squared 18 y 27 endfraction startfraction 2 over 3 (y minus 5) endfraction startfraction 3 (y minus 5) over 2 endfraction startfraction (y minus 5) (y 2) squared over 6 (y 3) squared endfraction startfraction 3 (y 5) (y minus 2) over 2 (y 2) endfraction Describe the presidency of Ronald Reagan How are viral diseases different fromother types of diseases?A. there aren't medicines to cure a viral diseaseB. viruses spread quicklyC. it infects healthy cellsD. it causes an immune response ___ radars show everything in fhe sky from servere weather to birds and mosquitoes to tornado debrisAnswers: PolarDopperGeostationary Orbiting Which of these statements is true regarding how the federal judicial system is organized in the U.S. Constitution? A. Article III creates the Supreme Court and the Federal District Courts. B. The Supreme Court is responsible for creating Federal District and Appeals courts. C. There is only one Supreme Court, and Congress may set up lower courts. D. The Supreme Court hears criminal cases, and the Federal Appeals Court hears civil cases. What is the value of x in the triangle? What percent of 6 is 9? How do you find the frequency in statistics? can someone please help me solve these math problems they are about triangle proofs Which expression has the greatest value?(options are included in the image) 5What is the area of a triangle with a base of 25 mm and a height of 10 mm?001 6-mm4O13 mmOo 264 mm?3O 16 mm Mina had a disco for her birthday. For every 2 boys at the disco, there were 3 girls. There were 35 children at the disco in total. How many boys were at the disco? if a tax is levied on the sellers of a product, then the supply curve will In the 1950s tall smokestacks for large factories were constructed and pollution was released higher in the atmosphere where winds were stronger. The motto during this time was "dilution is the solution to _______."A: MotionB: PollutionC: Evelution