Find the value of (5 +√5)(5 -√5)

Answers

Answer 1

Answer:

20

Step-by-step explanation:

(5 +√5)(5 -√5)=(5)²-(√5)²

                        =25-5

                        =20 ...........................


Related Questions

What is the value of the exponential expression below 64 1/2

Answers

21 is the answer to this question

Answer:

its 8

Step-by-step explanation:

Can someone help me ASAP please with all the odd numbers I would be very grateful.

Answers

what do you mean with all the odd numbers? Like 1, 3, 5, 7 ect.?

What is the ratio 7 to 8 as a fraction,decimal,and percent.

Answers

Answer:

fraction: 7/8

decimal: 0.875

Percent:8.75%

Answer:

Step-by-step explanation:

The ratio of 7 to 8

as a fraction is...

7/8 (7 divided by 8)

as a decimal...

0.875

as a percent...

87.5%

*just take the decimal and move the decimal point over two places to get your percent which is out of 100

so...

0.875 * 100 = 87.5%

You can use the formula A = 252 + 4sh to find the surface area of a square prism
that has a base with edge length s and height h. A square prism has a base with
edges that are 12 centimeters long and a height of 15 centimeters. What is the
surface area of the square prism? Show your work.
Please answer fast!! I’m in a test. Give the full explanation

Answers

Answer:

The surface area is 972 square cm

Step-by-step explanation:

Numeric Value of Functions

Given the function:

A = 252 + 4sh

Where A is the surface area of a square prism , s is edge length of the base  h is the height.

A square prism has a base with edges s=12 cm long and height of h=15 cm.

Substituting these values, we get:

A = 252 + 4(12)(15)

A = 252 + 720 = 972

A = 972

The surface area is 972 square cm

The surface area of the square prism is 1008 cm².

Surface area of a square prism:

Surface area = 2s² + 4sh

where

s = edge side

h = height

Therefore,

s = 12 cm

h = 15 cm

surface area = 2 × 12² + 4 × 12 × 15

surface area = 2 × 144 + 48 × 15

surface area = 288 + 720

surface area = 1008

surface area = 1008 cm²

learn more on square prism: https://brainly.com/question/20796251?referrer=searchResults

What is the y-intercept of the line?

Answers

It crosses the y axis at 4... it is 4 :)

Answer:

a. (0, 4)

General Formulas and Concepts:

Algebra I

The y-intercept is the y value when x = 0. Another way to reword that is when the graph crosses the y-axis.

Step-by-step explanation:

According to the graph, the line crosses the y-axis at y = 4. Therefore, our y-intercept is 4. Writing it in coordinate point would be (0, 4), as definition of the y-int.

A car travels about 25 miles on one gallon gas.if between 10 and 12
Gallons of gas are used

Answers

Answer:

The car will travel between 250 and 300 miles with a consumption of between 10 and 12 gallons of gasoline.

Step-by-step explanation:

If a car travels 25 miles on a gallon of gasoline, when using between 10 and 12 gallons of gasoline, the miles it will travel are derived from the following calculation:

1 = 25

10 = X

((25 x 10) / 1) = X

250 = X

So if you use 10 gallons of gasoline, the car will travel about 250 miles. Now if you use 12 gallons, it will go about 300 miles.

Therefore, the car will travel between 250 and 300 miles with a consumption of between 10 and 12 gallons of gasoline.

5/6 + 3/4 + 2/3 pls ​

Answers

Answer:

2.25 i believe

Step-by-step explanation:

Pleaseeeeeeeeeee help :)

Answers

Answer:

12: 21 16:28

Step-by-step explanation:

4 pounds are equal to 7 packs. 4x3=12, and 7x3=21, and so on.

Is that the only ones I used

Answers

Answer:

yes

Step-by-step explanation:

a baseball player got 13 hits in 50 times at bat. what percent of her times at bat did she get a hit

Answers

Answer:

26%

Step-by-step explanation:

138.4 minus 48.732 help

Answers

The correct answer is 89.700

A man flies a small airplane from Fargo to Bismarck, North Dakota- a distance of 180 miles. Because he is flying into a head wind, the trip takes him 2 hours. On the way back, the wind is still blowing at the same speed, so the return trip takes only 1.2 hours. What is the planes speed in still air, and how fast is the wind blowing?
1) His plane speed equals ______ mph
2) The wind speed equals ______ mph

Answers

Answer:

1.) 120 mph

2.) 30 mph

Step-by-step explanation:

Given that a  man flies a small airplane from Fargo to Bismarck, North Dakota- a distance of 180 miles. Because he is flying into a head wind, the trip takes him 2 hours. On the way back, the wind is still blowing at the same speed, so the return trip takes only 1.2 hours. What is the planes speed in still air, and how fast is the wind blowing?

Let the wind speed = w

and the plane speed = p

From the first sentence,

P - w = 180/ 2

P - w = 90 ....... ( 1 )

From the second statement,

P + w = 180/1.2

P+ w = 150 ...... ( 2 )

Solve equation 1 and 2 simultaneously

P + w = 150

P - w = 90

Add the two equations

2P = 240

P = 120 mph

Substitute p in equation 1

W = 150 - 120

W = 30

Therefore, the wind speed is 30 mph and the plane speed is 120 mph

How many different combinations are there for the word MATH

Answers

Answer:

[tex]Combination = 24[/tex]

Step-by-step explanation:

Given

MATH

Required

Number of combination

First, we count the letters in MATH

There are 4 letters;

So:

[tex]n = 4[/tex]

Since, no letter is repeated.

The number of combination is n!

This gives:

[tex]Combination = 4![/tex]

[tex]Combination = 4*3*2*1[/tex]

[tex]Combination = 24[/tex]

Which action would violate the Ninth Amendment?

speaking with a pharmacist about a prescription
accusing a political opponent of dishonest behavior
publishing a family recipe in a community cookbook
obtaining unauthorized personal information from a website

Answers

Answer:

d

Step-by-step explanation:

The action that would violate the Ninth Amendment would be:

d) Obtaining unauthorized personal information from a website.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Now, Today, the Ninth Amendment is used mainly to stop the government from expanding their power rather than just limiting their power.

The 9th amendment means that even if a right is not specifically mentioned in the Constitution, it still belongs to the people.

For example, in this case, the right to privacy. It's not specifically mentioned in the Constitution, but it is still a right that the government cannot take away.

Thus, The action that would violate the Ninth Amendment would be:

d) Obtaining unauthorized personal information from a website.

Learn more about the mathematical expression visit:

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The rain gauge at the airport showed 22 inches of rain in April. Which of these is the SAME as 22 inches?

Answers

Answer:

24

Step-by-step explanation:

First things first you multiply 22inches of rain times 22 and that is how you get 24

Need help please on this

Answers

Answer:

I think it's dilated by a scale factor of 5. Because the black one is 3 squares long and the purple one is 15. So divide those and you get 5! and to check just multiply 5x3 to find the length of the purple one!

Step-by-step explanation:

Hope this helps! please mark brainliest! :)

Find the angle PQR [Geometry]

Answers

Answer:

5

Step-by-step explanation:

Angle on A STRAIGHT line sums up to 180

angle PQR and angle RQS are both on a straight line therefore they sum up to 180

4x+129+5x+6=180

then here you group like terms

4x+5x=150-129-6

9x=45

divide both sides by 9

9 dividing 45 is 5

The amount of time it takes Isabella to wait for the bus is continuous and uniformly distributed between 3 minutes and 17 minutes. What is the probability that it takes Isabella more than 5 minutes to wait for the bus

Answers

Answer:

P(X>5) = 0.857

Step-by-step explanation:

Let X [tex]\sim[/tex] uniform(3.17)

[tex]f(x) = \dfrac{1}{17-3} ; \ \ \ 3 \le x \le 17[/tex]

The required probability that it will take Isabella more than 5 minutes to wait for the bus can be computed as:

[tex]P(X > 5) = \int ^{17}_{5} f(x) \ dx[/tex]

[tex]P(X > 5) = \int ^{17}_{5} \dfrac{1}{17-3} \ dx[/tex]

[tex]P(X > 5) =\dfrac{1}{14} \Big [x \Big ] ^{17}_{5}[/tex]

[tex]P(X > 5) =\dfrac{1}{14} [17-5][/tex]

[tex]P(X > 5) =\dfrac{12}{14}[/tex]

P(X>5) = 0.857

Use operations of exponent to simplify

3^5/3^-6

Answers

Answer:

[tex]\displaystyle \frac{3^5}{3^{-6}}=3^{11}[/tex]

Step-by-step explanation:

Properties of Exponents

They can be used to simplify expressions of the form

[tex]b^x\cdot b^y=b^{x+y}[/tex]

[tex]\displaystyle \frac{b^x}{b^y}=b^{x-y}[/tex]

The last property will be used to simplify:

[tex]\displaystyle \frac{3^5}{3^{-6}}=3^{5-(-6)}=3^{5+6}=3^{11}[/tex]

[tex]\mathbf{\displaystyle \frac{3^5}{3^{-6}}=3^{11}}[/tex]

help
plz (A) 4.00
(B) 0.25
(C) 1.00
(D)0.10

Answers

Answer:

0.25

Step-by-step explanation:

2.00÷8=0.25 and the rate keeps going constant at a rate of 0.25

Ariel bought 3 raffle tickets for $5. How many tickets could Ariel
buy for $15?

Answers

Answer:

9 raffle tickets

Step-by-step explanation:

Because  3 raffle tickets are $5

and to find out the number of tickets you can buy with $15 you have to

divide $15 by $5 which is 3

then multiply the 3 times 3 to get 9 raffle tickets

Have a great day, I hope this is helpful to you.

Answer:

9

Step-by-step explanation:

3=5 6=10 9=15

When the Fed is concerned about inflation, it will likely do which of the following?

Answers

Answerj,   C v v .

Step-by-step explanation:

What is the equation of the line –3x–2y=30 in slope-intercept form?



Enter your answer in the box.

Answers

Answer:

y = - 1.5x - 15

Step-by-step explanation:

Step 1:

- 3x - 2y = 30         Equation

Step 2:

- 2y = 3x + 30        Add 3x on both sides

Step 3:

y = - 1.5x - 15      Divide 2 on both sides

Answer:

y = - 1.5x - 15

Hope This Helps :)

Answer:   y = - 1.5x - 15

Step-by-step explanation:

First, we will add 3x to both sides of the equation.

-2y = 3x + 30

Next, we will divide 2 on both sides of the equation.

y = -1.5x - 15

Answer -  y = -1.5x - 15

write the value of 50 times the sum of 64 and 36

Answers

e Value of the Expression a. 50 times the sum of 64 and 36. 50 x(64+36)

Answer:

500 :)

Step-by-step explanation:

Mandy and her mom are making homemade play-dough. Besides the flour, the recipe calls for 1/4 cup of salt for every 3/4 cup of water
used. How much salt would they need if they used one cup of water?

Answers

Answer:

about a half teaspoon

Step-by-step explanation:

can someone explain what surface area means?

Answers

Answer:

The surface area of a solid object is a measure of the total area that the surface of the object occupies.

Step-by-step explanation:

The total area of the surface of a three-dimensional object. Example: the surface area of a cube is the area of all 6 faces added together

A family went to a baseball game. They spent $25 to park the car in a parking lot and $24 per ticket. Which equation represents x, the total number of people going to the baseball game if the family spends y, $145 total?

Answers

There was 6 people in to total

AE is an angle bisector of BAC if the measure of BAE = x + 30 and masure of angle EAC = 3x-10 determine Measure of angle EAC

Answers

The measure of angle EAC is equivalent to 50 degrees.

The value of x for the given geometry will be 20°.

What is an angle?

The angle is the measurement of the angular distance. For instance, we have a meter and an inch for linear motion, but we don't have a measurement for angular rotation, therefore the angle is helpful in determining angular rotation.

An angle is a geometry in plane geometry that is created by 2 rays or lines that have an identical terminus.

The identical endpoint of the two rays—known as the vertex—is referenced as an angle's sides.

Given that AE is a bisector of ∠BAE and ∠EAC

so,

∠BAE = ∠EAC

x + 30 = 3x - 10

x = 20°

Hence 20° will be the answer to the given question.

For more about the angle

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what does n equal? btw this is 6th grade! also < Is between 3 and 5

Answers

Answer:

n < 4

Step-by-step explanation:

[tex]\frac{1}{2} n+3<5[/tex]

     -3     -3

[tex]\frac{1}{2} n[/tex] < 2

divide  both sides by [tex]\frac{1}{2}[/tex]

n < 4

Hope this helps!!!

What is the value of A if sin (A) = 3√2?

Not here
60
45
30

Answers

Answer:

sin A = √3/2sin A = sin 60°A = 60°Now, cot A = cot 60° = 1/√32cot² A - 1 = 2cot² 60° - 1= 2(1/√3)² - 1= 2/3 - 1 = -1/3Hence your required answer is -1/3Hope This Helps You!

Step-by-step explanation:

it might work

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