which is equivalent to (9y2 – 4x)(9y2 + 4x), and what type of special product is it?
81y4 – 16x2, a perfect square trinomial
81y4 – 16x2, the difference of squares
81y4 – 72xy2 – 16x2, a perfect square trinomial
81y4 – 72xy2 – 16x2, the difference of squares

Answers

Answer 1

81y4 -16x, the difference of squares.

Answer 2
Final answer:

The expression (9y2 – 4x)(9y2 + 4x) is equivalent to 81y4 – 16x2, a difference of squares in mathematical terms.

Explanation:

The expression you are asking about is equivalent to

81y4 – 16x2

, which is a special product known as

the difference of squares

. In mathematics, a difference of squares is a term that describes an expression of the form a^2 - b^2. It can be factored into the multiplication of two binomials: (a+b)(a-b). In your example, (9y2)^2 is 81y4 and (-2x)^2 is 16x2, so the final expression is 81y4 – 16x2.

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Related Questions

True or False 68oz < 4lb 6oz

Answers

Answer:true!!!

Step-by-step explanation:

Which statements about the opposite of −12 are true? Select each correct answer. −12 and its opposite are on located on the same side of zero on a number line. The opposite of the opposite of −12 is −12 . The opposite of −12 is −112 . −12 and its opposite are located the same distance from zero on a number line.

there's more than 1 answer

Answers

The correct answers are:
The opposite of the opposite of -12 is -12
The opposite of -12 is 12, and the opposite of 12 is -12.

-12 and its opposite are located the same distance from zero on a number line.-see attached picture



Final answer:

The true statements about the opposite of -12 are that the opposite of the opposite of -12 is -12 and -12 and its opposite are located the same distance from zero on a number line. The opposite of -12 is +12.

Explanation:

In mathematics, the opposite of a number is also called its additive inverse, which is the number that, when added to the original number, will result in zero. −12 and its opposite, +12, are indeed located on opposite sides of zero on a number line, not on the same side. The second statement is true, the opposite of the opposite of −12 is indeed −12. The third statement is incorrect, the opposite of −12 is +12, not −112. The fourth statement is also true, −12 and its opposite are both 12 units away from zero on a number line, so they're at the same distance from zero.

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The volume of a rectangular prism is (x3-3x2+5x-3), and the area of its base is (x -2). If the volume of a rectangular prism is the product of its base area and height, what is the height of the prism?

Answers

Final answer:

To find the height of the rectangular prism, divide the volume by the area of the base.

Explanation:

To find the height of the rectangular prism, we need to divide the volume by the area of the base. The formula for the volume of a rectangular prism is V = lwh, where l, w, and h represent the length, width, and height, respectively. The formula for the area of the base is A = lw.

In this case, the volume is given as (x3-3x2+5x-3) and the area of the base is (x -2). So, we need to divide the volume by the area of the base, which gives us:

(x3-3x2+5x-3)/(x -2).

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The height of a right cylinder is 3 times the radius of the base. The volume of the cylinder is 24 cubic units what is the height of the cylinder

Answers

Put the given information into the formula and solve for the variable of interest.
.. V = π*r^2*h
.. 24 = π*(h/3)^2*h
.. 24 = π/9*h^3
.. 9*24/π = h^3
.. ∛(216/π) = h
.. h = (6/π)√(π^2) ≈ 4.097 . . . . units

The height of the cylinder is about 4.097 units.

the answer is c.6 i just took the test.

Which graph correctly solves the system of equations below? x2 + y2 = 25 y = x + 1

Answers

we have
x2 + y2 = 25
y = x + 1

using a graph tool
see the attached figure

the solution  are the points (3,4) and (-4,-3)

The first thing you should realize is what kind of functions you have:
 x2 + y2 = 25 
 It is a circle of radius r = 5 units.
 y = x + 1
 It is a line of positive slope.
 The solution is the cut points of both graphs.
 Attached graphic and analytical solution.

A basketball player makes 60% of his shots from the free throw line. suppose that each of his shots can be considered independent and that he throws 4 shots. let x = the number of shots that he makes. what is the probability that he makes all 4 shots?

Answers

Using the binomial distribution, it is found that there is a 0.1296 = 12.96% probability that he makes all 4 shots.

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

For each throw, the player either makes it or misses it. The probability of making each throw is the same, independent of other throws, thus, the binomial distribution is used to solve this question.

Binomial probability distribution:

The binomial probability is the probability of exactly x successes on n repeated trials, with X having two possible outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by:

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of a success on a single trial.

Makes 60% of the shots, thus [tex]p = 0.6[/tex]4 shots, thus [tex]n = 4[/tex].The probability of making all of them is P(X = 4), thus:

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 4) = C_{4,4}.(0.6)^{4}.(0.4)^{0} = 0.1296[/tex]

0.1296 = 12.96% probability that he makes all 4 shots.

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which of the following is the graph of the rational function? y=x^2+2x-8/x^2-9

Answers

Notice that we can simplify both numerator and denominator of our rational function. In the numerator we have a quadratic expression of the form [tex]ax^2+bx+c[/tex]. To to simplify it, we are going to find tow numbers that add to 2 and multiply to -8; those numbers are 4 and -2.
[tex]x^2+2x-8=(x+4)(x-2)[/tex]
In the denominator we have a difference of squares:
[tex]x^2-9=x^2-3^2=(x+3)(x-3)[/tex]

Now we can rewrite our function:
[tex]y= \frac{x^2+2x-8}{x^2-9} = \frac{(x+4)(x-2)}{(x+3)(x-3)} [/tex]

From the simplified form of our rational function we can infer that its graph has two vertical asymptotes at [tex]x=3[/tex] and [tex]x-3[/tex]

We can conclude that the graphic of our rational function is: 

Please help me with questions 26 and 27

Answers

26) Answer is choice A: y = -3
This is the horizontal line that cuts the figure into two congruent pieces.
--------------------------------------------------------------

27) Answer is choice A: AB = 24 and DE = 12
CA/DF = 12/6 = 2
CB/FE = 20/10 = 2
The ratio of the larger to smaller corresponding sides is 2:1 or just 2

So AB needs to be twice as long as DE
That only happens with choice A

The cost for a pack of 4 padlocks is $17.60 . Find the unit price in dollars per padlock. If necessary, round your answer to the nearest cent.

Answers

its $4.40 hope this helps

Answer:

18.00

Step-by-step explanation:

60+40=100

Two years ago Carol's living expenses were $ 1200 $ 1200 per month. This year the same items cost Carol $ 1400 $ 1400 per month. What was the annual inflation rate for the past two years?

Answers

inflation = ((price index difference / price index in base year) x 100) / period
             = ((200 / 1200) x 100) / 2
             = 8.33%
Given:
2 years ago - consumer price index 1,200 per month
current year - consumer price index 1,400 per month

Inflation rate = [(Consumer price index current - Consumer price index previous) / Consumer price index previous ] * 100%

Inflation rate = [(1400 - 1200) / 1200] * 100%  = (200 / 1200) * 100% =  16.67%

Since 2 years has passed, the 16.67% inflation rate is good for 2 years. We simply divide the inflation rate by 2 to get the annual inflation rate.

16.66% / 2 = 8.33%

The annual inflation rate for the past two years is 8.33%

There are 100 books in the library. There are non-fiction and fiction books. Write the fraction of the books that are fiction.

Answers

the complete question in the attached figure

Let
x--------------------- > non-fiction books.------------------ > x=60
y--------------------- > fiction books.
we know that 
x+y=100
y=100-x=100-60=40
the fiction books. are y=40

if 100%----------------------- > 100 books
  X---------------------------- > 40
X=40*100/100=40%

40%-------------- > 40/100=20/50=2/5

the answer is
the fraction of the books that are fiction is (2/5)

Diameter of a cylindrical tank is 9 feet and the height of a tank is 25 feet. Find the approximate volume of the cylindrical tank to the nearest hundredth place

C. 1,589.63 cubic feet

D. 2,325.26 cubic feet

E. 6,358.50 cubic feet

F. 3,489.27 cubic feet.

Answers

The volume is 
.. V = π*r^2*h
.. = π*(4.5 ft)^2*(25 ft)
.. ≈ 1590.43 ft^3

The closest choice is C 1589.63 ft^3.

_____
Apparently, someone used the 3-digit approximation 3.14 for π to compute a 6-digit result. That is why it is wrong in the last 3 digits.

How many three-letter codes can we make using only vowels, a, e, i, o, or u?

Answers

5 * 5 * 5 = 125

Answer: 125 codes

Answer and explanation:

Given : Vowels a,e,i,o or u.

To find : How many three-letter codes can we make using only vowels ?

Solution :

1) If we assume that repetition is allowed then

The three letter code can form

[tex]5\times 5\times 5=125[/tex] ways

Number of three-letter codes can we make using only vowels is 125.

2) If we assume that repetition is not allowed then

The three letter code can form

[tex]5\times 4\times 3=60[/tex] ways

Number of three-letter codes can we make using only vowels is 60.

if f(x) = 5x^3-2 and g(x)= 2x+1, find (f+g) (x).

Answers

Hey there!

To start, whenever you are performing (f+g)(x), this means that you are to add the functions f(x) and g(x) together. 

In this case, f(x) is equal to 5x^3-2 and g(x) is equal to 2x+1.

Because you are adding the two expressions as according (f+g)(x), you should set up this expression:
(5x^3-2)(2x+1)

Now, combine your like terms (terms of the same variables that are all raised to the same power):
(5x^3-2)(2x+1)
=5x^3+2x-1

Therefore, (f+g)(x)=5x^3+2x-1

Hope this helps and I hope you have a marvelous day! :)

The expression for (f + g)(x) is [tex]\rm 5x^3+2x-1[/tex] and this can be determined by using the arithmetic operations and the given data.

Given :

[tex]\rm f(x) = 5x^3-2[/tex][tex]\rm g(x) = 2x + 1[/tex]

The following steps can be used in order to determine the value of (f + g)(x):

Step 1 - Write the given functions.

[tex]\rm f(x) = 5x^3-2[/tex]     --- (1)

[tex]\rm g(x) = 2x + 1[/tex]      --- (2)

Step 2 - Now, to determine the value of (f + g)(x), add both function f(x) and g(x).

f(x) + g(x) = (f + g)(x)

Step 3 - Substitute the value of f(x) and g(x) in the above expression.

[tex]\rm (f + g)(x) = 5x^3-2+2x+1[/tex]

Step 4 - Simplify the above expression.

[tex]\rm (f + g)(x) = 5x^3+2x-1[/tex]

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how can you be able to find an area

Answers

you multiply the length and the width if it is a square. if you give the shape i can be more specific
The equation to find area is usually specific to the one shape but A = L * W is the area for a rectangle!

Consider a game in which a coin will be flipped three times. for each heads you will be paid $100. assume that the coin comes up heads with probability 4/5.

Answers

That wpuld mean that you would get paod 90% of the time

Use the graph to find the local minimum and the local maximum for the given function.

Answers

The maximum and minimum are always the y-coordinates of the highest or lowest points.

On the interval [-3, 0] the minimum is -16.
On the interval [0, 3] the maximum is 3.75.
On the interval [0, 3] the minimum is -3.

In the interval [-3, 0] the local minimum is -16 and In the interval [0, 3], the local maximum is 4 and local minimum is -3.

What is Local Maxima and Local Minima?

The local maxima and minima are the input values for which the function gives the maximum and minimum output values respectively. The y - coordinate of local maxima is called local maximum and that of local minima is called as local minimum.

Given is a graph of a function.

In the graph the local maximum is the y - coordinate that has maximum value at any specific input. Similarly, local maximum is the y - coordinate that has minimum value at any specific input.

PART A

In the interval [-3, 0], the local minimum is -16

PART B

In the interval [0, 3], the local maximum is 4 and local minimum is -3.

Therefore, in the interval [-3, 0] the local minimum is -16 and In the interval [0, 3], the local maximum is 4 and local minimum is -3.

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How many numbers must be selected from the set $\{1, 3, 5, 7, 9, 11, 13, 15\}$ to guarantee that at least one pair of these numbers add up to 16?

Answers

All of them!
1+15=16
3+13=16
5+11=16
7+9= 16

what is the greatest common factor (gcf) of the numerator and denominator in the rational expression below? 7x+14/2x^2+x-6
a. -6
b. 7
c. x+2
d. 2x-3

Answers

The answer is C. The numerator 7x+14 can be factored as 7(x+2). The denominator 2x^2+2x-6 can be factored as (x+2)(2x-3). The greatest common divisor of 7(x+2) and (x+2)(2x-3) is obviously x+2, which is contained in both of the two expressions.

Final answer:

The greatest common factor (GCF) of the numerator and denominator in the rational expression (7x+14)/(2x²+x-6) is x+2. Thus, option C is correct.

Explanation:

To find the greatest common factor (GCF) of the numerator and denominator of the given rational expression (7x+14)/(2x²+x-6), we need to factor both the numerator and the denominator separately.

For the numerator 7x+14, we can factor out a 7:

7x + 14 = 7(x + 2)

For the denominator 2x² + x - 6, we need to factor it as a quadratic expression. This can be done by finding two numbers that multiply to give -12 (the product of the coefficient of x² and the constant term) and add up to 1 (the coefficient of x). These numbers are 3 and -4, so the denominator can be factored as:

2x² + x - 6 = (2x - 3)(x + 2)

Now we can see that the common factor between the numerator and the denominator is x + 2. Therefore, the GCF is x + 2, which corresponds to option (c).

The population of a small town decreased from 983 to 901. What is the percent decrease, to the nearest tenth of a percent?

Answers

Hello
Well first there's 82 less ppl
That would be 82/100 so .82
And mutlypy by 100% is 8.20 so it's 8%
Have a nice day

The population of the small town percent decreased by approximately 8.4%.

To find the percent decrease in the population of the small town, we can use the formula for percent decrease:

Percent Decrease = [(Initial Value - Final Value) / Initial Value] * 100

Given that the initial population was 983 and the final population was 901, we can plug these values into the formula:

Percent Decrease = [(983 - 901) / 983] * 100

Now, calculate the numerator:

Percent Decrease = [82 / 983] * 100

Divide and multiply:

Percent Decrease = 0.0835 * 100

Now, calculate the percent decrease to the nearest tenth of a percent:

Percent Decrease ≈ 8.4%

So, the population of the small town decreased by approximately 8.4%.

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The width of a rectangle is 3 inches less than its length. The area of the rectangle is 340 square inches. What are the length and width of the rectangle? A. length = 20 inches, width = 17 inches B. length = 17 inches, width = 14 inches C. length = 10 inches, width = 7 inches D. length = 34 inches, width = 10 inches

Answers

Final answer:

To find the length and width of a rectangle given its area and the relationship between its dimensions, set up and solve an equation by following the step-by-step process.

Explanation:

Given: The width of a rectangle is 3 inches less than its length and the area is 340 square inches.
To solve: Let the length be 'x' inches, then the width is 'x - 3' inches. Set up the equation 'x(x - 3) = 340', solve for 'x' to find the length and width.

Step-by-step:

Express the area as a product of the length and width: 'x(x - 3) = 340'.Expand and rearrange the equation: 'x^2 - 3x - 340 = 0'.Factor the quadratic equation: '(x + 17)(x - 20) = 0'.Solve for 'x': 'x = -17' or 'x = 20'. Since length cannot be negative, the length is 20 inches.Calculate the width: '20 - 3 = 17 inches'.

A right triangle has legs that are 15 feet and 25 feet long. What is the length of the hypotenuse? Enter your answer as a decimal in the box. Round your answer to the nearest hundredth.

Answers

The answer is 29.15


Hope this helps!

Ming says that 0.24 > 14 because 0.24 = 24. Which best explains Ming's error?

Answers

Not sure what the options are for the answers. But I am assuming that Ming multiplied 0.24 by 100 to get 24. She however forgot to do it to both sides. She had to multiply 14 by 100 as well. So 24 >or= 1400. Hope this somewhat helps.

Answer:

Ming says that 0.24 > 14

1

4

because 0.24 = 24

2

4

. Which best explains Ming's error?

Step-by-step explanation:

EXPERTS/ACE/GENIUSES HELP PLZ!!:)
( only #2 )
Explain as well!! Best answer will get brainlist... but make ur answer short and sweet plz.

Answers

(a)  Volume of  1st cup  =  (1/3)pi *(4/2)^2 * 8  =   32/3 pi in^3

 scoops  =  (2000/3)pi / ( 32/3) pi  =  2000/32  = 62.5  =  63


(b)  Volume of  2nd cup  =  (1/3)pi *(8/2)^2 * 8  =   128/3 pi in^3

 

scoops  =  (2000/3)pi / ( 128/3) pi  =  2000/128  = 15.625  =  16

If a student scored 82 points on a test where the mean score was 78.2 and the standard deviation was 6.7. the student's z score is .

Answers

Z-score formula is z=(x-m) / sd
x = data value
m= mean
sd =  standard deviation

z= (82-78.2) / 6.7
  =0.567
  =0.57

Two secant segments intersect outside a circle as shown. What is the value of x?

Answers

Your answer would be 17.5 I just took the test I got it right
The correct answer was 17.5

Thanks Darriennichole

Hudson worked two jobs last summer to start saving for a car. He mowed lawns during the day and worked at a pizza place in the evenings. In one month, Hudson earned a total of $1,400. If he earned $360 more at the pizza place than mowing lawns how much did he earn at each job?

Answers

mowing lawns he earned 520 and at the pizza place he earned 880 
hope this helps!

Hudson earned $880 at pizza deliveries and $520 at mowing the lawn.

What is a system of linear equation?

A System of Linear Equations is when we have two or more linear equations working together.

Given that, Hudson mowed lawns during the day and worked at a pizza place in the evenings. Hudson earned a total of $1,400. also he earned $360 more at the pizza place than mowing lawns

Let he earn x at deliveries and y at mowing,

Therefore, establishing a system of equations,

x+y = 1400

x-y = 360

Adding both the equations,

2x = 1760

x = 880

y = 1400-880

y = 520

Hence, Hudson earned $880 at pizza deliveries and $520 at mowing the lawn.

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IF YOU ANSWER WITHOUT A PROPER ANSWER AND YOU JUST WANT POINTS YOUR ANSWER WILL BE REPORTED! 99 POINT QUESTION! So I want a full explanation, best answer gets to be the brainliest. How much is 457 - (-54) + 7700 * 325 = ? I feel generous today so I'm making this 99 points. Btw, this is my first question asked here on brainly.

Answers

First you rewrite the question so it would be
457 + 54 + 7700 * 325 = x
So then you multiply 7700* 325 which would be 2502500
Then it is 457 + 54 + 2502500
So , 457 + 54 = 511
And 511 + 2502500 = 2503011 
Did this help ?
457 - (-54) + 7700 * 325 

So for this question you have to use PEMDAS, in other words, order of operations. PEMDAS means you have to do parentheses first, then exponents, then multiplication and division, and them addition and subtraction.

You have to  to start with the multiplication first since that is what comes first in this question.

457 - (-54) + 7700 * 325 turns into
457 - (-54) + 2502500

Afterwards you continue with addition and subtraction.

So, 457 - (-54) + 2502500 turns into
511+2502500
The reason 457 - (-54) equaled 511 is because negatives cancelled out and became a addition sign.

You finish off by 511+2502500

Your final answer would be 2503011

The game called lotto sponsored by the louisiana lottery commission pays its largest prize when a contestant matches all 4 of the 41 possible numbers. assume there are 41 ping-pong balls each with a single number between 1 and 41. any number appears only once, and the winning balls are selected without replacement.
a. the commission reports that the probability of matching all the numbers are 1 in 101,270. what is this in terms of probability

Answers

we have that

[the probability of matching all the numbers]=1/101270
[the probability of matching all the numbers]=0.00000987-------> (0.000987%)

the answer is
1 in 101,270-------> means that the probability is 0.00000987

Final answer:

The reported probability of 1 in 101,270 for matching all four lotto numbers is equivalent to a decimal probability of approximately 0.00000987.

Explanation:

The Louisiana Lottery Commission's lotto game entails participants matching all 4 numbers out of a pool of 41. The reported probability of achieving this feat is 1 in 101,270. To express this probability, we utilize the ratio of successful outcomes to total possible outcomes. Consequently, the probability of matching all four numbers is 1/101,270, equivalent to approximately 0.00000987 in decimal form. This minute probability underscores the challenging nature of the lotto game, highlighting the rarity of successfully predicting and matching the specified set of numbers within the given range.

How do you solve 7(2-j)-5??

Answers

There is nothing to solve.

You can simplify the expression by making use of the distributive property and collecting like terms.
.. 7(2 -j) -5
.. = 7*2 -7*j -5
.. = 14 -7j -5
.. = 9 -7j
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