√2 (2-2√10) how do you simplify

Answers

Answer 1

Answer:

2√2- 4√5

Step-by-step explanation:

√2 (2-2√10)

2√2- 2√20

2√2- 2√(4*5)

2√2- 2*2√5

2√2- 4√5


Related Questions

Sean bakes 18 dozen chocolate cupcakes and 13 dozen vanilla cupcakes. About how many cupcakes did Sean bake? EXPLAIN now!!!

Answers

Sean baked 372 cupcakes in total.

What is multiplication?

Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given:

Sean bakes 18 dozen chocolate cupcakes,

and 13 dozen vanilla cupcakes.

There are 12 cupcakes in one dozen.

To find the number of cupcakes:

Using multiplication operation,

18 x 12 = 216.

13 x 12 = 156.

The number of cupcakes = number of chocolate cupcakes + number of vanilla cupcakes.

The number of cupcakes = 216 + 156

The number of cupcakes = 372

Therefore, the number of cupcakes are 372.

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3)
There are 27 coins in a bag made up of 20-cents and 50-cents. Given that
the total amount in the bag is $10.20, how many 20-cent coins are there in
the bag?

Answers

Answer:

A bag contains 25paise, 50 paise and Re 1 coins. There are 220 coins in all and the total amount in the bag is Rs.160. If there are thrice as many 1 Re. coins as there are 25 paise coins, then what is the number of 50 paise coins.

Step-by-step explanation:

Does the equation y = 5(2.3)* model exponential growth, exponential decay or neither?

Answers

Exponential growth because maths is good

Answer:

It models exponential growth

Step-by-step explanation:

Use the formula f(x)=a(1+r)^x where r is the growth rate, a is the principal value, and x is the length of time.

Since r would be equal to 2.3-1=1.3, this means a growth rate of 130%, which means the model models exponential growth since r>1.

Latoya's Coffee Shop makes a blend that is a mixture of coffee types A and B. In one bag of the blend, there are 6 kilograms of type A. Four bags of the blend are a total of 36 kilograms. How many kilograms of type B are there in one bag?

Answers

The Kilograms of type B that are in one bag of the Latoya's Coffee shop blend would be = 3kg

What is a mixture?

A mixture is defined as the combination of two or more components which can or cannot be separated by ordinary methods.

The coffee blend of LaToya shop = Type A and B

A bag of the coffee blend = 6kg of Type A.

4 bags of coffee blend = 36kg

Therefore 4 bags of coffee blend contains = 6 see×4 = 24 kg of Type A

Type B in each bag = 36 - 24 = 12/4 = 3kg.

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Two numbers are in the ratio 5 : 7. If they differ by 18 then, find the numbers.

Answers

Answer:

45 and 63

Step-by-step explanation:

7x-5x=18

2x=18

2 2

x=9

7(9)=63

5(9)=45

There is a 3 out of 20 chance that you can win a game. How many "wins" would you predict if you played the game 50 times? (NO LINKS OR FILE PLEASE, I WILL REPORT)
A 3
B 6
C 17
D 8

Answers

Answer:

D. 8

Step-by-step explanation:

set up a proportion

3/20 = x/50

to get from 20 to 50 you have to multiply by 2.5

so multiply the top number (3) by 2.5 to find x

this comes out to 7.5 which you then round up to 8

Answer:

D

Step-by-step explanation:

Rewrite the following without an exponent. 1/4^-4

Answers

Answer:

[tex]\frac{1}{4^{-4}} = 256[/tex]

Step-by-step explanation:

Given

[tex]\frac{1}{4^{-4}}[/tex]

Required

Write without the exponent

[tex]\frac{1}{4^{-4}}[/tex]

Apply the following law of indices

[tex]\frac{1}{a^m} = a^{-m}[/tex]

So, we have:

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

Evaluate the bracket

[tex]\frac{1}{4^{-4}} = 4^4[/tex]

[tex]\frac{1}{4^{-4}} = 256[/tex]

Peter is building a ramp at his home. He wants to build it 11 inches high with aa 60 inch base. How long will the ramp be that Peter is building? Round to the 10ths if needed.​

Answers

Answer:   61 inches

Explanation:

You have a right triangle with legs of 11 and 60. The hypotenuse is unknown.

Use the pythagorean theorem to find the hypotenuse.

[tex]a^2 + b^2 = c^2\\\\11^2 + 60^2 = c^2\\\\121 + 3600 = c^2\\\\3721 = c^2\\\\c^2 = 3721\\\\c = \sqrt{3721}\\\\c = 61\\\\[/tex]

The ramp is exactly 61 inches long.

7.89 divided by 2 step by step

Answers

Answer:

3.945

Step-by-step explanation:

b) 6q + 4-q + 5 simplify​

Answers

Answer:

5q + 9

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

Is a student takes out a $750 loan at 4% interest, how much interest is paid back in 60 days

Answers

Answer:

754.93 in total with an increase of 4.93

Step-by-step explanation:

Triangle JKL has vertices J(6, -1), K(10,-2), and L(5, -3). Determine the
coordinates of the vertices of the image after a translation along (0,4)
and a reflection in the y-axis.

Answers

J''(-6, 3) , K''(-10, 2) , and L''(-5, 1) those exists the vertices after the transformations.

What is meant by coordinates of the vertices?

[tex](x_1,y_1), (x_2,y_2),[/tex] and [tex](x_3,y_3)[/tex] are the coordinates of a triangle's vertices [tex](x_3,y_3)[/tex]. The line connecting the first two is divided in the proportion l:k, and the line connecting this point of division to the opposing angular point is divided in the proportion m:k+l.

When you write coordinates as (x, y), it means to write the x-axis point first and then the y-axis point. Some kids might be instructed to remember this by saying "along the corridor, up the stairs," which means they should follow the x axis first and then the y axis.

First do the first transformation, the translation.

J (6, -1 + 4), K (10, -2 + 4), and L (5, -3 + 4).

After adding, we get J'(6, 3) , K'(10, 2) , and L'(5, 1).

We Utilize those new coordinates to do the reflection in the y axis.

J''(6(-1), 3) , K''(10(-1), 2) , and L''(5(-1), 1).

After multiplying, we get J''(-6, 3) , K''(-10, 2) , and L''(-5, 1).

Those exists the vertices after the transformations.

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J''(-6, 3) , K''(-10, 2) , and L''(-5, 1) those exists the vertices after the transformations.

What is meant by coordinates of the vertices?

[tex](x_{1}, y_{1}), (x_{2}, y_{2}) and (x_{3}, y_{3})[/tex]  are the coordinates of a triangle's vertices . The line connecting the first two is divided in the proportion l:k, and the line connecting this point of division to the opposing angular point is divided in the proportion m:k+l.

When you write coordinates as (x, y), it means to write the x-axis point first and then the y-axis point. Some kids might be instructed to remember this by saying "along the corridor, up the stairs," which means they should follow the x axis first and then the y axis.

First do the first transformation, the translation.

J (6, -1 + 4), K (10, -2 + 4), and L (5, -3 + 4).

After adding, we get J'(6, 3) , K'(10, 2) , and L'(5, 1).

We Utilize those new coordinates to do the reflection in the y axis.

J''(6(-1), 3) , K''(10(-1), 2) , and L''(5(-1), 1).

After multiplying, we get J''(-6, 3) , K''(-10, 2) , and L''(-5, 1).

Those exists the vertices after the transformations.

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Find the reference angle for 342°.

Answers

Answer:

18 degree

Step-by-step explanation:

answer fast and correct pls

Answers

Answer:

A

Step-by-step explanation:

help me pls i ghave the first bit odne

Answers

Answer:

1 = 24 degrees

2 = 156 degrees

Step-by-step explanation:

Solve the equation for x:

x -  15 +4x = 180

5x = 195

x = 39

so 1 = (39-15) = 24 degrees

so 2 = (4x39) = 156 degrees

5 pizzas cost £35.00. How much do 3 pizzas cost?

Answers

Answer:£21.00

Step-by-step explanation:

One pizza: (£35/5) =£7

Three pizza's: (£7x3)=£21

£21 because 35 divide by 5 is £7 so £7 times 3 is £21

The volume of the cube below is 250.047 m^3. The side length could be between which sets of numbers below?

A. 4 cm and 5cm
B 5cm and 6 cm
C. 6 cm and 7 cm
D. 7 cm and 8 cm

Answers

Step-by-step explanation:

The volume of the cube below is 250.047 m^3. The side length could be between which sets of numbers below?

A. 4 cm and 5cm

B 5cm and 6 cm

C. 6 cm and 7 cm

D. 7 cm and 8 cm

ans.C

whitch lines are perpendicular??​

Answers

Answer:

A

Step-by-step explanation:

multiple lines meeting at 90 degrees. hope this helped

The right answer is A

Find the area of a regular hexagon with a side length of 10 cm

Answers

60 is my resultados of area

Answer

[tex]54 \sqrt{3} [/tex]

Step-by-step explanation:

Each interior angle is 120°for an hexagon.... Bisecting each will give an angle of 60° and thus dividing the hexagon into 6 equilateral triangles as the Bisecting lines meet at the centre of the hexagon. So find area of each equilateral triangle and multiply by 6

Area=

[tex] \frac{1}{2} b \times h \times 6 \\ = 3bh \\ = 3 \times 6 \times 3 \sqrt{3} [/tex]

[tex] = 54 \sqrt{3 } cm ^{2} [/tex]

A piece of hematite contains 72% iron. If the hematite weighed 160g, how much iron would there be?

Answers

Step-by-step explanation:

160g=100%

72%=72/160*100

=45

Show your work please help

Answers

The error in the work lies in line 3 where the square root is calculated inaccurately.

What is square root of a number?

The opposite of squaring an integer is finding its square root. The square root of a number can be found by looking for a number that, when squared, yields the original value.

The error is in line 3, line 4 and line 5.

The error in line 3 is inaccurate calculation of the value of square root of 4.

The error in line 4 is a mathematical calculation error.

The error in line 5 is a mathematical calculation error.

The correct answer in Line 3 is:

[tex]6 * 2 *\sqrt{5} -3\sqrt{5}[/tex]

The correct answer in Line 4 is:

[tex]12\sqrt{5} - 3\sqrt{5}[/tex]

The correct answer in Line 5 is:

[tex]9\sqrt{5}[/tex]

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What is the equation of the line that passes through the point (6,-5) and has a
slope of 1/3?

Answers

Answer:

y = 1/3x - 7

Step-by-step explanation:

start with the point-slope form:

(y-y1) = m(x-x1)

substitute the values of (x,y) into the formula:

(y-(-5)) = 1/3(x-6)

y+5 = 1/3x - 2

now write in slope-intercept form:

y = 1/3x - 2 - 5

y = 1/3x - 7

Find the surface area of the cylinder.
13 m
20 m

Answers

Answer:

2695.49 m

Step-by-step explanation:

A = 2πrh + 2πr2

2 · π · 13 · 20 + 2 · π · 132

2695.4865

Dan is training his puppy, Lola, to sit. Dan holds a treat 5 feet above the ground until Lola
sits. As soon as she does, he drops the treat, and Lola catches it in her mouth 1.5 feet above
the ground.
To the nearest tenth of a second, how long does the treat fall before Lola catches it?
Hint: Use the formula h = -16t² + s.

Answers

The distance the treat falls before Lola catches the treat is 3.5 feet.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

The distance of the treat from the ground = 5 feet.

The distance the dog jumps to catch the treat from the ground = 1.5 feet.

Now,

The distance the treat fall before Lola catches.

= 5 - 1.5

= 3.5 feet

Thus,

The treat falls for 3.5 feet.

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State the domain and range of the following function.

Answers

Answer:

Step-by-step explanation:

ur STUP1d

Solve for p if L = 2 1/2 ft and W = 3 2/5 ft. P = 2L + 2W​

Answers

Answer:

P = 59/5

Step-by-step explanation:

1. Convert the following improper fractions to mixed numbers; a. 55
2
b. 43 3
2. Convert the following mixed numbers to improper fractions; a. 72
5
b. 121 2
[1]
[1]
[1]

Answers

1

7×2+1/2

14+1/2

15/2

2

12½

12×2+1/2

24+1/2

25/2

For an outdoor concert by the city orchestra, concert organizers estimate that 17,000 people will attend if it is not raining. If it is raining, concert organizers estimate that 6000 people will attend. On the day of the concert, meteorologists predict a 70% chance of rain.

Determine the expected number of people who will attend this concert.

It is expected that _ people will attend the concert. ​

Answers

Answer: 11,900

Step-by-step explanation: Uh I think this is correct because 70% of the people who will not go to the concert will be 11,900. So 70% of 17,000 is is 11,900. 6,000 is a estimate. I hope this helps

Jocelyn has a collection of 100 coins. How many coins represent 25% of her collection?

Answers

25 coins represent 25 percent of Jocelyn's collection.

What is the percentage?

A percentage is a quantity or ratio that, in mathematics, represents a portion of one hundred. A dimensionless relationship between two numbers can be represented in a variety of ways, such as through ratios, fractions, and decimals. The symbol "%" is frequently written after the number to indicate percentages.

given, Jocelyn has a collection of 100 coins.

100% of her collection represents = 100 coins

1 %  of her collection represents = 100/100 coins

1%  of her collection represents = 1 coin

thus,

25%  of her collection represents = 1*25 coins

25%  of her collection represents = 25 coins

therefore, 25 percent of the collection of Jocelyn represents 25 coins.

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Fill in the blank to make equivalent rational expressions.

Answers

Answer:

Step-by-step explanation:

a.we should Make their denominators the same.

16[tex]x^{8}[/tex]÷4x=4[tex]x^{7}[/tex]

b.molecule multiply 4[tex]x^{7}[/tex], 5·4[tex]x^{7}[/tex]=20[tex]x^{7}[/tex]

c.finally, we get it

the answer is 20[tex]x^{7}[/tex]

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