Use the grouping method to factor this polynomial completely. 3x^3+12x^2x+8

Answers

Answer 1

Answer:171x+8

Step-by-step explanation:

3x^3+12x^2x+8

=27x+144x+8

=171x+8


Related Questions

Six familie went to the food fetival. Each family ha 2 adult and 4 childern. The entry fee for each child ticket cot $4, and an adult ticket cot $8. What would be the total cot of the fetival ticket?

Answers

The total cost of the festival tickets for 6 families with 2 adults and 4 children would be $192.

We can start by using the following equation to find the total cost of the child tickets:

Child tickets cost = Number of child tickets x Cost per child ticket

In this case, the number of child tickets is 4 children/family x 6 families = 24 children

The cost per child ticket is $4.

So, the total cost of the child tickets would be:

24 children x $4/child = $96

Similarly, we can find the total cost of the adult tickets:

Adult tickets cost = Number of adult tickets x Cost per adult ticket

In this case, the number of adult tickets is 2 adults/family x 6 families = 12 adults

The cost per adult ticket is $8.

So, the total cost of the adult tickets would be:

12 adults x $8/adult = $96

To find the total cost of the festival tickets, we can add the cost of the child tickets and the cost of the adult tickets:

Total cost = Child tickets cost + Adult tickets cost

$96 + $96 = $192

So, the total cost of the festival tickets for 6 families with 2 adults and 4 children would be $192.

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A toaster uses 1,200 watts. It is plugged into a 120-volt outlet. How many amps will the toaster draw?

Answers

Answer:

Step-by-step explanation:

10.00 amps

The triangle below is equilateral. Find the length of side x to the nearest tenth.
x
12

Answers

Answer:

  6.9

Step-by-step explanation:

You want half the side length of an equilateral triangle with an altitude of 12.

Pythagorean theorem

The altitude shown divides the base into equal parts. If one of those parts is x, then the full side length is 2x. The Pythagorean theorem relates the side lengths of the right triangle:

  (2x)² = x² +12²

  3x² = 144 . . . . . . . . subtract x²

  x² = 48 . . . . . . . . divide by 3

  x = √48 = 4√3 . . . take the square root

  x ≈ 6.9

__

Additional comment

You should be familiar with the fact that a 30°-60°-90° triangle has side lengths in the ratio 1 : √3 : 2. This means the shortest side (x) will have a length of 12/√3 ≈ 6.9, since the middle-length side is shown as having a length of 12.

What is the coefficient of X in 8 x/y *?

Answers

The polynomial 8X/Y has a coefficient of X of 8.

A polynomial is a mathematical statement made up of coefficients and indeterminates that uses only the operations addition, subtraction, multiplication, and powers of positive integers of the variables.

A coefficient in mathematics is a multiplicative factor in a polynomial term, a series term, or an expression. It is often a number, but it can also be any expression. They may also be referred to as parameters if the coefficients are variables in and of themselves.

In the above polynomial 8X/Y, the coefficient of X is 8.

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Can you help me with this

Answers

Using the function f(x) = 500(0.67)^x :

A).f(0) = 500, f(1) = 335, f(2) = 224.45 and f(3) = 150.3815

B). 33% of bugs are eaten each day

C). 67% of the bugs remain each day

D). After day 7 will there remain fewer than 40 bugs in the farm.

Function of a function rule

The function of a function rule is defined as the process that changes the input value to output.

day 1 will have 165 bugs eaten with a percentage evaluated as;

(165 × 100)/500 = 33%

day 2 will have 110.55 bugs eaten with a percentage evaluated as;

(110.55 × 100)/335 = 33%

day 3 will have 74.0685 bugs eaten with a percentage evaluated as;

(74.0685 × 100)/224.45 = 33%

day 1 will have 335 bugs remaining with a percentage evaluated as;

(335 × 100)/500 = 67%

day 2 will have 224.45 bugs remaining with a percentage evaluated as;

(224.45 × 100)/335 = 67%

day 3 will have 150.3815 bugs remaining with a percentage evaluated as;

(150.3815 × 100)/224.45 = 67%

At day 7;

f(7) = 500(0.67)⁷

f(7) = 30.30.

Therefore, 500, 335, 224.45 and 150.3815 are the respective population the days:0, 1, 2, and 3. for the function f(x) = 500(0.67)^x

33% of bugs are eaten each day

67% of the bugs remain each day and,

After day 7 will there remain fewer than 40 bugs in the farm.

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Find the 12th term -7, -3, 1,

Answers

Answer:

[tex] \sf \: 12th \: term = 37[/tex]

Step-by-step explanation:

Common difference (d) is,

→ d = a2 - a1

→ d = -3 - (-7)

→ d = -3 + 7

→ [ d = 4 ]

Now the 12th term will be,

→ a1 + (d × (n - 1))

→ -7 + (4 × (12 - 1))

→ -7 + (4 × 11)

→ -7 + 44

→ 37 => 12th term

Hence, the answer is 37.

the function f(x)=a(1/2)^x is graphed below for a=4. Describe how the graph would change for a>4 and 1

Answers

The curve of the graph would move closer to the y-axis for a > 4

How to describe the graph?

From the question, we have the following parameters that can be used in our computation:

f(x) = a(1/2)^x

Such that

a = 4

The graph of the function is added as an attachment

From the given parameters, we can see that the value of a is positive

This implies that an increment in the value of a would make the curve move closer to the y-axis

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solve the following linear inequalities in one variable and show the solution set on the number line. 10<2x-1

Answers

The solution for given linear inequality will be x>11/2.

What are linear inequalities?

Inequality represents the mathematical expression in which both sides are not equal. If the relationship makes the non-equal comparison between two expressions or two numbers, then it is known as inequality in Maths. In this case, the equal sign “=” in the expression is replaced by any of the inequality symbols such as greater than symbol (>), less than symbol (<), greater than or equal to symbol (≥), less than or equal to symbol (≤) or not equal to symbol (≠). The different types of inequalities in Maths are polynomial inequality, rational inequality, absolute value inequality.

The symbols ‘<‘ and ‘>’ express the strict inequalities and the symbols ‘≤’ and ‘≥’ denote slack inequalities. A linear inequality seems exactly like a linear equation but there is a change in the symbol that relates two expressions.

e.g. y>x+2

Now,

Given linear inequality is

10<2x-1

i.e. x>11/2.

The number line is in image.

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Given the function f(x) = -5x + 1, what is the value of x if f(x) = 11?

Answers

For the value of f (x) = 11, the value of x is

What is Function?

A relation between a set of inputs having one output each is called a function.

We have to given that;

The function is,

⇒ f(x) = -5x + 1

And, f (x) = 11

Now, We have;

⇒ f(x) = -5x + 1

Substitute f (x) = 11, we get;

⇒ 11 = - 5x + 1

⇒ 5x = - 11 + 1

⇒ 5x = - 10

⇒ x = - 2

Thus, The value of x = - 2

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HCF and LCM of 240 and 126
Please I will appreciate it

Answers

Answer:

the highest (hcf) would be 6 , while lowest (lcm) is 5,040

Find the real solutions of the equations 7x to the fourth =56. Round your answers to two decimal places. Explain.

Answers

The equation 7x^4 = 56 can be rewritten as x^4 = 8. To find the real solutions of the equation, we take the fourth root of both sides:

What does a math equation mean?

Algebraically speaking, an equation is a statement that shows the equality of two mathematical expressions. For instance, the two equations 3x + 5 and 14, which are separated by the 'equal' sign, make up the equation 3x + 5 = 14.

x = ∛8 = 2.

So the real solutions of the equation are x = 2.

Note: since the fourth root of 8 is 2, we can check that the equation holds true. i.e 7*2^4 = 56

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Type the correct answer in each box.
Alan, Bill, and Calvin are playing a game with collectible cards. At the moment, Alan has 11 less than 2 times the number of cards Bill has. Calvin has
1 more than 1 times the number of cards Bill has.
If Alan and Calvin have the same number of cards, the number of cards Bill has is 12
19
If Alan, Bill, and Calvin have all the cards in the deck, then the deck has
Reset
cards.
Next
The number of cards Alan and Calvin each have is

Answers

In given word problem the number of cards Alan has is 13 and Number of cards Calvin has is 13.

What is word problem?

A math word problem is a question that is written as one or more sentences and asks students to use their mathematical understanding to solve an issue from "real world." In order  to understand the word problem, they must be familiar with the terminology that goes along with the mathematical symbols that they are used to.

Here , Let us take Number of card Alan has as A and Number of card bill has as B and Number of cards does Calvin has as C.

Now Alan has 11 less than 2 times the number of cards Bill has then,

=> A = 2B-11 ------------->1

And Calvin has 1 more than 1 times the number of cards Bill has then,

=> C =  B+1 ----------> 2

Here Alan and Calvin has same number of cards then

=> 1 = 2

=> 2B - 11 = B +1

=> 2B-B = 11+1

=> B = 12

Now put B= 12 into 1 then

=> A = 2(12)-11= 24-11 = 13

Now put B= 12 into 2 then

=> C = 12+1 = 13

Hence the number of cards Alan has is 13 and Number of cards Calvin has is 13.

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Which expression is equivalent to

x²+7x+8/x²+2x-1

A) 5x +9
B) 5x/x²+2x-1
C) 5x+9/x²+7x+8
D) 5x+9/x²+2x-1

Answers

The expression that is equal to the provided expression, x2+7x+8, is 5x/x2+2x-1.

what is expression ?

In math, it is possible to multiply, divide, add, or subtract. The following sentence form describes an expression: (Mathematical Operator, Number or Variable, Expression) Numbers, variables, and operations make constitute a mathematical expression (such as addition, subtraction, multiplication or division etc.) Expressions and phrases can be compared.

given

expression = x²+7x+8/x²+2x-1

x²+8/x²+7x+2x-1

5x + 1/x2 + 2x -1

5x/x²+2x-1

The expression that is equal to the provided expression, x2+7x+8, is 5x/x2+2x-1.

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which ratios form a proportion iready

Answers

4/5 and 6/10 form a proportion.

Which ratios form a proportion iready ?A proportion is a statement that two ratios are equal. In order for two ratios to be considered a proportion, the two ratios must be multiplied by the same number to yield the same result.Doing so is called cross-multiplying. In this case, 4/5 can be cross-multiplied to get 8/10, which is equal to 6/10.Since 4/5 and 6/10 are both equal when cross-multiplied, they are considered a proportion.In addition to cross-multiplying to confirm that two ratios form a proportion, the two ratios can also be written as a fraction and simplified.In this case, the two ratios can be written as 4/5 = 6/10.The fraction can then be simplified to 2/3 = 3/5.This method of simplifying the fraction is another way to confirm that the two ratios are a proportion. In conclusion, 4/5 and 6/10 form a proportion because they are equal when cross-multiplied, and they simplify to 2/3 and 3/5, respectively.

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Geometric mean of 2 and 22

Answers

Answer:

4,6,8,12

Hope it helps because im not sure if its right

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Find the slope of the line passing through the points (7, 10) and (18, 25).

Answers

The slope of the line passing through the points is given by the equation Slope m = 15/11

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

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

Given data ,

Let the equation of line be represented as A

Now , the value of A is

Let the first point be represented as P = P ( 7 , 10 )

Let the second point be represented as Q = Q ( 18 , 25 )

Now , the slope of the line between the points is given by

Slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Substituting the values in the equation , we get

Slope m = ( 25 - 10 ) / ( 18 - 7 )

On simplifying the equation , we get

Slope m = 15/11

Hence , the slope of the line is m = 15/11

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Quadrilateral DABC was dilated to form quadrilateral EFGH.

Answers

The scale factor for the dilation from the quadrilateral EFGH to form DABC is the fraction 3/5.

What is scale factor

Scale factor is the ratio between the scale of a given original object and a new object, which is its representation but of a different size either bigger or smaller.

Considering the coordinates (1/2, 3/4) and (3/10, 9/4) centered at the original, we will observe the the point 1/2 was increased by 3/5 to become 3/10 at the x–axis, that is;

1/2 × 3/5 = 3/10

Also, the point 3/4 was increased by 3/5 to become 9/20 at the y–axis, that is;

3/4 × 3/5 = 9/20

Therefore, 3/5 is the scale factor of the dilation for the quadrilateral EFGH to DABC.

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An account earning 6.6% interest compounded continuously for 10 years would have a balance
of how much if the principal was $550.
$984.96
$1046.41
O$1064.14

Answers

Answer:

To find the final balance of an account earning interest compounded continuously, you can use the formula:

A = Pe^(rt)

where A is the final account balance, P is the initial principal (or starting) amount, r is the interest rate, and t is the time (in years) for which the interest is being calculated.

Substituting in the given values:

A = 550 * e^(0.066 * 10)

Therefore, the final balance would be approximately $1064.14.

Answer:

C)  $1064.14

Step-by-step explanation:

[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Continuous Compounding Formula}\\\\$ A=Pe^{rt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\\phantom{ww}$\bullet$ $P =$ principal amount \\\phantom{ww}$\bullet$ $e =$ Euler's number (constant) \\\phantom{ww}$\bullet$ $r =$ annual interest rate (in decimal form) \\\phantom{ww}$\bullet$ $t =$ time (in years) \\\end{minipage}}[/tex]

Given:

P = $550r = 6.6% = 0.066t = 10 years

Substitute the given values into the continuous compounding formula and solve for A:

[tex]\implies A=550e^{0.066 \times 10}[/tex]

[tex]\implies A=550e^{0.66}[/tex]

[tex]\implies A=550(1.93479233...)[/tex]

[tex]\implies A=1064.13578...[/tex]

Therefore, the balance of the account after 10 years would be $1064.14.

27 km = how many m ????????

Answers

Answer:

27000 m

Step-by-step explanation:

1km = 1000 m

27km = 27 x 1000 = 27000 m

So, the answer is 27000 m

Answer:27 km in meters is 27000 m

Step-by-step explanation:

multiply the length by 1000!

A point at (-4, 7) is rotated -90° about the origin. What are the new coordinates for the point?

Answers

The coordinates of the point after the transformation is (-7, -4)

How to determine the new coordinates

From the question, we have the following parameters that can be used in our computation:

(x, y) = (-4, 7)

Transformation involves changing the location and/or the size of a shape in a coordinate plane

A point rotating -90° about the origin will have its x-coordinate become its y-coordinate and its y-coordinate become its negative x-coordinate.

Hence, the point (-4, 7) will become (-7, -4) after rotating -90° about the origin.

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What is the 100th prime number?

Answers

The 100th prime number is 541.

Therefore the answer is 541.

Prime numbers are numbers that are divisible by only 1 and themselves. They are considered to be the "building blocks" of the natural numbers, and are important in number theory and other branches of mathematics.

Prime numbers are fundamental for number theory and have a lot of applications in cryptography, coding theory, and other areas of mathematics.

The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. The primes continue indefinitely, with no repeating pattern or predictable distribution. Finding the nth prime number is not an easy task, it requires knowledge of number theory and a lot of computational power.

In general, the nth prime number grows faster than any polynomial in n. The 100th prime number is larger than the 100th Fibonacci number (which is about 354) and smaller than the 100th triangular number (which is about 5050).

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Given the sequence below, find S7
(4374, 1458, 486,162,...}

Answers

The value of the 7th term of the Geometric sequence is 6

What is geometric sequence?

A geometric sequence is a sequence of numbers that follows a pattern were the next term is found by multiplying by a constant called the common ratio, r.

An example of a Geometric sequence is 2, 4, 8, 16, 32, 64, …, where the common ratio is 2.

r is found by dividing the second term by first term.

The nth term of a geometric sequence is S(n) = ar^(n-1).

The common ratio in the sequence = 1458/4374 = 1/3

therefore S(7) = 4374×1/3^( 7-1)

= 4374× (1/3)⁶

= 4374/729

= 6

Therefore the value of the seventh term is 6

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Find the Equation of the line that goes through (2,7) and (-1.1)

*Graphically and Algebraically

Answers

Answer:

y=2x+3

Step-by-step explanation:

See attached worksheet.

Guidelines are presented on how to both graphically and mathematically solve for the equation.  

Graphing:  Mark the the two given points and connect them with a ruler to form the line.  These same two points may be used to determine the slope, as is shown.  The slope is 2.  The line intersects the y axis at 3, so the y-intercept is 3.  Using the standard form of an equation, the line is y = 2x + 3, as is outlined in the attachment.

The same line is determined mathematically by using the same technique for calculating slope.  The value of the y-intercept may be found by using one of the two given points in the equation that has the slope of 2:

  y= 2x +b

Enter pont (-1,1), for example, and calculate the value of b. b = 3, (since 1 = 2*(-1)+ b, so b=3).

The equation of this line is y=2x+3

William just measured himself and found out he is 61 inches tall. The last time he measured, he was 50 inches tall. What percent taller is William now? %

Answers

Answer:

18.03

Step-by-step explanation:

Its pretty easy actually,

50x100 When we put 50 correct out of 61 possible into our formula, we get this: (50/61) x 100 = 81.97%

so , 100-81.97 = 18.03

A box with a square base and no top is to be made from a square piece of carboard by cutting 7 in squares from each corner and folding up the sides. The box is to hold 7623 in How big a piece of cardboard is needed?

Answers

The size of the cardboard piece required is 7627.0 in.

The formula for finding the size of a box is

2(L + W) + 8L + 8W = Perimeter of the cardboard piece

Where L = Length, W = Width

We need to find L and W to find the size of the cardboard piece.

7623 = 2(L + W) + 8L + 8W

7623 = 2L + 2W + 8L + 8W

7623 = 10L + 10W

7623/10 = L + W

762.3 = L + W

Let's take L = 500 and W = 262.3 (762.3 - 500 = 262.3)

Now we plug in the values of L and W in the original formula

2(500 + 262.3) + 8(500) + 8(262.3) = 7623

2(762.3) + 4000 + 2102.4 = 7623

1524.6 + 4000 + 2102.4 = 7623

7627.0 = 7623

Therefore, the size of the cardboard piece required is 7627.0 in.

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Given the function g(x) = 6x + 2, find g(0)

Answers

To find g(0) we need to substitute x = 0 into the function g(x) = 6x + 2.

g(0) = 6(0) + 2 = 0 + 2 = 2

So, g(0) = 2

Therefore, the value of the function g(x) when x is equal to 0 is 2.

Please explain what answer is it. And how do u show the work

Answers

A. 5/8

The equation for the constant of proportionality is k=y/x. It shows the unit rate (ratio) of a proportional relationship between two given values.

The three ways to write a 5 to 8 ratio are: 5/8, 5:8, and “5 to 8.”
So, the answer is A. 5/8

Bivariate Probability Distribution

Answers

A bivariate probability distribution is a statistical distribution that describes the joint probability of two random variables. It provides the probability of each combination of values for the two variables. In simple words, it's a way to model the joint probability of two variables and the relationship between them.

A bivariate probability distribution is represented by a probability density function (pdf) or a probability mass function (pmf) depending on whether the variables are continuous or discrete. The function gives the probability of a given pair of values of the two variables. Bivariate probability distributions are useful in understanding the relationship between two variables and can be used to make predictions or draw inferences. It can be visualized using a scatter plot, a contour plot or a 3D plot. It can also be used to calculate the covariance and correlation between the two variables.

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Complete question:

Describe Bivariate Probability Distribution.

The function f(x)=x√ is horizontally stretched by a factor of 4 to form function g(x).

What is the equation of g(x)?

Enter your answer in the box.

Answers

The equation of the function g(x) will be √ [ (x) -  4 )].


What is an asymptote?

A line that, in analytical geometry, is an asymptote of a curve is one where, as one or both of the x or y coordinates tend to infinity, the distance between the curve and the line approaches zero.

An asymptote of a curve is a line that is tangent to the curve at a point at infinity in projective geometry and related contexts.

Given that the function F(x) is √x and is horizontally stretched by a factor of 4 to form function g(x).

The equation of the stretched function can be written as:-

f(x) = √x

g(x) = √ [ (x) -  4 )]

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Cecilia types at a speed of 38 words per minute. Which graph correctly represents the total words Cecilia types over a 4 minute period? ​

Answers

The total words Cecilia types over a 4 minute period is 152 words

How to solve an equation?

An equation is a mathematical expression that contains two or more numbers and variables linked together by mathematical operations such as exponents, multiplication, division, addition, subtraction and so on.

The slope intercept form of a linear equation is:

y = mx + b

where m is the slope and b is the y intercept.

Let y represent the total words that Cecilia types after x minutes.

Cecilia types at a speed of 38 words per minute. Hence:

y = 38x

After 4 minutes:

y = 38(4) = 152 word

The total words Cecilia types over a 4 minute period is 152 words

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can you help me answer the questions? Sean is a wholesaler who buys goods in bulk from a manufacturer. The manufacturer offers Sean a discount on these purchases. What likely prompted the manufacturer to give Sean this discount? A. to promote goodwill B. to encourage early payment C. to advertise a product D. to reduce transportation expenses E. to establish tax benefits A given volume of methane diffuses in 20 seconds how long will it take the same volume of sulphur(IV) oxide to diffuse under the same condition protein quality is primarily determined by the amount of each of the 20 amino acids a protein contains. T/F Match the best choose from the given alternative. (0.5 point each) A A. Acting in good faith B. 10 Years C. Make Law D. Making Delivery E. CapacityB 1. Period of Limitation for contract 2. Obligation of buyer. 3. Judiciary 4. Legislative 5. Executive 6. Cause for termination of agency contract 7. Obligation of agent 8. Legally interdicted person 9. Child below 18 years old 10. Function of law F. Maintaining peace and security G. Death of principal. H. Interpret the law I. Non-performance of buyer per contract of J. Paying Price. K. Have no right to conclude contract L. Enforce the law M. Have no a capacity to do legal act TRUE/FALSE.Methane absorbs red light readily, so we would expect a planet with a mostly methane atmosphere to appear blue. The residents of a city voted on whether to raise property taxes the ratio of yes votes to no votes was 7 to 5 if there were 2705 no votes what was the total number of votes a barrier with yellow and purple markings indicates a _____. group of answer choices fire hazard fall hazard radiation hazard confined space hazard Place these epidermal layers in order, starting with the most superficial layer and ending with the deepest layer.Rank the options below.Stratum corneumStratum basaleStratum lucidumStratum granulosumStratum spinosum studying the philosophy of religion is designed to turn all persons into atheists and engage persons in emotional arguments.T/F according to the "lock in" argument, which states are most likely to sign and ratify international human rights agreements? The intensity of electromagnetic wave B is four times that of wave A. How does the magnitude of the electric field amplitude of wave A compare to that of wave B?The electric field amplitude of wave A is one-fourth that of wave BThe electric field amplitude of wave A is three times that of wave BThe electric field amplitude of wave A is two times that of wave.The electric field amplitude of wave A is four times that of wave BThe electric field amplitude of wave A is one half that of wave B Decide whether a chemical reaction happens in either of the following situations. If a reaction does happen, write the chemical equation for it. Be sure your chemical equation is balanced and has physical state symbols.A strip of solid lead metal is put into a beaker of 0.065M Cu(NO3)2 solution.A strip of solid copper metal is put into a beaker of 0.096M Pb(NO3)2solution. what is the maximum magnitude of the cells angular momentum when d=1.50 m? ||= Molly's school is selling tickets to a play. On the first day of ticket sales the school sold 7 senior citizen tickets and 11 student tickets for a total of $125. The school took in $180 on the second day by selling 14 senior citizen tickets and 8 student tickets. What is the price each of one senior citizen ticket and one student ticket? calculate the specific gravity of a liquid given the following information: m = 56.68 g, ma = 31.34 g, ml = 41.01 g. Engineers have developed a scanning device that can detect hull fractures in ships. Ships have a 30% chance of having fractures. 75% of ship hulls with fractures fail the scan test. However, 15% of hulls that did not have fractures also failed the scan test. If a ship hull fails the scan test, what is the probability that the hull will have fractures? robert feels he cannot express his true emotions in public for fear of appearing weak. this is an example of _______. Show that the given set v is closed under addition and multiplication by scalars and is therefore a subspace of R^3. V is the set of all [x y z] such that 9x = 4ya + b = [ ] [ ] (Simplify your answer) Which of the following are characteristics of coaxial network cable? (Select TWO.)It is totally immune to electromagnetic interference (EMI).The conductors within the cable are twisted around each other to eliminate crosstalk.It uses two concentric metallic conductors.It has a conductor made from copper in the center of the cable.It is made of plastic or glass in the center of the cable.