Answer:
It's the last choice.
Step-by-step explanation:
1. (3x - 2y)(3x -2y)
= 9x^2 - 12xy + 4y^2
The product is (9x^2 - 4y^2) (9x^2 - 12xy + 4y^2)
which is neither a difference of 2 squares or perfect square trinomial.
2. (3x - 2y)(3x + 2y)
= 9x^2 - 6xy + 6xy - 4y^2
= 9x^2 - 4y^2
and (9x^2 - 4y^2(9x^2 - 4y^2) is a perfect square.
Statement 4 is true about the product (9x² – 4y²)(3x – 2y) that if it is multiplied by (3x + 2y), the product of all of the terms will be a perfect square trinomial. This can be obtained by multiplying the product in the question with each term in the question and check whether the it is a difference of squares or a perfect square trinomial.
What is difference of square formula?
Difference of squares can be factored using the identity
a²-b²=(a+b)(a-b)
What is perfect square trinomial ?Algebraic expressions in which there are three terms that can be obtained by multiplying a binomial with itself.
Formulas required,
(a + b)² = a² + 2ab + b²
(a - b)² = a² - 2ab + b²
Which statement is true?Given product is, (9x² – 4y²)(3x – 2y)
Using difference of squares it can be written as, ((3x)² – (2y)²)(3x – 2y)
=(3x + 2y)(3x – 2y)(3x – 2y)
=(3x + 2y)(3x – 2y)²
Statement 1: multiplied by (3x – 2y)(3x + 2y)(3x – 2y)²× (3x – 2y)
=(3x + 2y)(3x – 2y)³
This is not in the form of difference of squares.
Statement 2: multiplied by (3x – 2y)(3x + 2y)(3x – 2y)²× (3x – 2y)
=(3x + 2y)(3x – 2y)³
This is not in the form of a perfect square trinomial.
Statement 3: multiplied by (3x + 2y)(3x + 2y)(3x – 2y)²× (3x + 2y)
=(3x + 2y)(3x – 2y)³
This is not in the form of difference of squares.
Statement 4: multiplied by (3x + 2y)(3x + 2y)(3x – 2y)²× (3x + 2y)
=(3x + 2y)²(3x – 2y)²
=[(3x + 2y)(3x – 2y)][(3x + 2y)(3x – 2y)]
=(9x² – 4y²)(9x² – 4y²)
=(9x² – 4y²)² = (a - b)², where a = 9x² and b = 4y²
This is in the form of a perfect square trinomial.
Hence statement 4 is true about the product (9x² – 4y²)(3x – 2y) that if it is multiplied by (3x + 2y), the product of all of the terms will be a perfect square trinomial.
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Quiz
Active
Which step shows the result of applying the subtraction property of equality?
1/4 (12x+8)+4 = 3
3 x+2+4= 3
3x+6 = 3
3x= -3
X=-1
20 POINTS!!! I WILL MAKE YOU BRAINLIEST!!!! 5 STARS AND THANKS! I need app suggestions!!!
What is an app that you can use to make RECTANGLE SHAPED fractions?
Answer:
You can use photo math it does all the math for you and explains why.
Hope this helps!
Step-by-step explanation:
Final answer:
For creating rectangular shaped fractions, Adobe Photoshop or Illustrator can be utilized for graphic designs, while EquatIO is fitting for educational materials involving math. Microsoft Word is another option that includes a built-in equation editor for such purposes.
Explanation:
If you are looking for an app that allows you to create graphics featuring rectangular shaped fractions, there are a few different tools that may be useful depending on your specific needs. For instance, graphic design apps like Adobe Photoshop or Illustrator have the capability to create almost any shape including rectangles, allowing you to design custom graphics that include fractions in any way you desire. If your goal is specifically to create educational materials, a math-oriented tool like EquatIO might be more suitable. This particular app is designed to help create mathematical equations, graphs, and shapes which can then be inserted into documents, making it very useful for educational purposes.
Additionally, if you're just looking to type fractions in a rectangular format for reports or presentations, you might consider using a word processor with good equation support, such as Microsoft Word, which includes a built-in equation editor that allows for the creation of rectangle shaped fractions and other mathematical notations. Always be sure that you have the appropriate licenses and access to these pieces of software before using them for any purpose.
What type of angle is angle G?
A. obtuse
B. straight
C. acute
D. right
Step-by-step explanation:
the correct answer is c
what is X equal to
-2x(3x+1)(x-8)(x+2)=0
Answer:
x can be 0, -1/3, 8 or -2
Step-by-step explanation:
the equation is already expressed in factor form:
-2x(3x+1)(x-8)(x+2)=0
Simply equate each of the factors to zero
i.e
-2x = 0 ----------> x = 0
3x+1 = 0 ----------> x = -1/3
x-8 = 0 ----------> x = 8
x+2 = 0 ----------> x = -2
Approximate the real zeros of f(x) = x2 + 3x + 2 to the nearest tenth.
a 2,1
C. 0,-1
b. 1,0
d. -2,-1
Answer:
D. -2, -1
Step-by-step explanation:
[x + 1][x + 2] = 0
Additive Inverses always result in 0, so straight off the bat, you know that your zeros are the above answers.
I am joyous to assist you anytime.
How many permutations are there of the letters in the word 'PLANTS', if all the letters are used without repetition?
Answer:
6!
or
6*5*4*3*2*1
or
720
Step-by-step explanation:
The word 'PLANTS' contains no letter more than once.
It is say 6 letter word.
_ _ _ _ _ _
There are 6 ways to choose the first blank (after than there are 5 letters left to choose from)
After the first blank, there are 5 letter left to choose from so there are 5 ways to choose the second blank.
Then 4 ways for the third blank.
3 ways for the fourth blank.
2 ways for the fifth blank.
1 way for the sixth blank.
Now to figure out the number of permutations you must multiply the number of different ways we have above for each blank.
That is we are doing 6*5*4*3*2*1 or 6!
There are 720 different permutations of the letters in the word 'PLANTS' when used without repetition. This is calculated as the factorial of the number of letters, which is 6. Therefore, 6 factorial (6!) equals 720.
Explanation:The subject of the question falls under the topic of permutations in Mathematics. The question is asking for the number of different ways that the letters in the word 'PLANTS' can be arranged if all letters are used without repetitions. This is a concept in combinatorics, a subject of discrete mathematics that deals with counting and arranging objects.
To solve this, we need to calculate the factorial of the number of letters in the word 'PLANTS'. There are 6 letters in the word. The factorial of a number (denoted as n!) is the product of all positive integers less than or equal to that number. Therefore, the number of permutations is 6!, which equates to 6 x 5 x 4 x 3 x 2 x 1 = 720.
So, there are 720 different permutations of the letters in the word 'PLANTS' if all the letters are used without repetition.
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The lateral area of a right prism having a perimeter of 25 inches and a height of 5 inches is:
A) 125 inches squared.
B) 100 inches squared.
C) 63 inches squared.
D) 30 inches squared.
Answer:
A) 125 inches squared
Step-by-step explanation:
The lateral area is the product of the perimeter of the base, and the height:
(25 in)(5 in) = 125 in²
__
If you draw the net for the object, you will see that the rectangle representing the lateral area has these dimensions.
VODU
UNIPPO
1. Find the radius of a sphere with a volume (V) of 113 mm”.
O A.3 mm
O B.9 mm
O C. 16 mm
O D. 12 mm
I Mark for review (Will be highlighted on the review page)
Answer:
r = ∛(3V/4π)
Step-by-step explanation:
The formula for the volume of a sphere is V = (4/3)πr³.
We want to solve this first for r³ and then for r.
Multiplying both sides of V = (4/3)πr³ by 3 yields an equation without fractions: 3V = 4πr³.
Dividing both sides of this equation by 4π isolates r³:
3V
r³ = -------
4π
To find r, take the cube root of both sides of
3V
r³ = -------
4π
obtaining r = ∛(3V/4π)
[tex]\bf \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}~~ \begin{cases} r=radius\\ \cline{1-1} V=113 \end{cases}\implies 113=\cfrac{4\pi r^3}{3}\implies 339=4\pi r^3 \\\\\\ \cfrac{339}{4\pi }=r^3\implies 26.98\approx r^3\implies \sqrt[3]{26.98}=r\implies 2.999 \approx r\implies \stackrel{\textit{rounded up}}{3=r}[/tex]
Help me on this math question and if u can’t see than u can Zoom in
Step-by-step explanation:
Tally means you write the number of marks of terms that fall in between every range you see.
Ex: Age 40 [36 - 40]; Tally: I; Frequency: 1
What I just did was find one term that fell in between the range of 36-40. See if you can do the rest using this example, and as always, I am joyous to assist anyone at any time!!!
1. Total teachers: 38
2. Teachers older than 35: 9
3. Teachers aged 31-40: 7
4. Most populated age range: 21-25 and 26-30 (5 teachers each)
5. Teachers younger than 31: 7
To complete the frequency table, we count the number of occurrences of each age within the given ranges:
Age Range Tally Frequency
-----------------------------------------------------------
16-20 || 2
21-25 ||||| 5
26-30 ||||| 5
31-35 ||||| 5
36-40 || 2
41-45 || 2
46-50 ||||| 5
-----------------------------------------------------------
Now, let's answer the questions:
1. There are 38 teachers at Accelerate Education. (Count the total frequency)
2. To find the number of teachers older than 35, we sum the frequencies of the age ranges 36-40, 41-45, and 46-50. 2 + 2 + 5 = 9.
3. To determine the number of teachers between the ages of 31 and 40, we sum the frequencies of the age ranges 31-35 and 36-40. 5 + 2 = 7.
4. The age range with the highest frequency is 21-25 and 26-30, each with 5 teachers.
5. To find the number of teachers younger than 31, we sum the frequencies of the age ranges 16-20 and 21-25. 2 + 5 = 7.
The question probable maybe:
(Given in the attachments)
find the value of k when the value of x is 2/3
kx2 - x - 2 =0
Answer:
k=6
Step-by-step explanation:
As stated, x=2/3, so you need to eval in the whole expression given
[tex]k*x^{2} -x-2=0[/tex]
which becomes the following>
[tex]k*(\frac{2}{3}) ^{2}-\frac{2}{3} -2=0\\[/tex]
Solving for K gives>
[tex]k=(2+\frac{2}{3})*\frac{9}{4}\\k=(\frac{9}{2} +\frac{3}{2})[/tex]
[tex]k=\frac{12}{2}[/tex]
geometry find the valued
Answer:
see explanation
Step-by-step explanation:
x = 54° corresponding angle to 54° and congruent )
y = 46° ( alternate angle to 46° and congruent )
w and x form a straight angle and are supplementary, hence
w = 180° - x = 180° - 54° = 126°
--------------------------------------------------------
The angle adjacent to z = 32° ( alternate angle to 32° and congruent )
z = 180° - 32° ( straight angle and supplementary )
z = 148°
The upper right corner of a rectangle is located at the point (20,20).The rectangle is 10 units wide and 15 units high
Algebra 2 please help ASAP
Answer:
(16x^2-1) can be factored over integers so, Option C is correct.
Step-by-step explanation:
Given: 256x^4y^2-y^2
Factorizing the given expression:
Taking y^2 common
=y^2(256x^4-1)
Using formula: a^2-b^2 = (a-b)(a+b)
=y^2((16x^2)^2-(1)^2)
y^2(16x^2+1)(16x^2-1)
y^2(16x^2+1)((4x)^2-(1)^2)
y^2(16x^2+1)(4x-1)(4x+1)
Since (16x^2-1) can be factored over integers so, Option C is correct.
A piggy bank contains some dimes and nickels. There are 8 more dimes than nickels in the bank. There is a total of $1.40. How many of each type of coin are in the bank?
This question is solved using a system of equations. I am going to say that:
x is the number of dimes.y is the number of nickels.Doing this, we get that: There are 4 nickels and 12 dimes.
There are 8 more dimes than nickels in the bank.
This means that: [tex]y = x + 8[/tex]
There is a total of $1.40.
Nickel is worth $0.05.Dime is worth $0.1.Thus, for the nickels:
[tex]0.05x + 0.1y = 1.4[/tex]
Since [tex]y = x + 8[/tex]
[tex]0.05x + 0.1(x + 8) = 1.4[/tex]
[tex]0.05x + 0.1x + 0.8 = 1.4[/tex]
[tex]0.15x = 0.6[/tex]
[tex]x = \frac{0.6}{0.15}[/tex]
[tex]x = 4[/tex]
For the dimes:
[tex]y = x + 8 = 4 + 8 = 12[/tex]
There are 4 nickels and 12 dimes.
A similar question is found at https://brainly.com/question/24342899
Final answer:
To solve the problem, we use algebra to express the relationship between the number of dimes and nickels and their total value in pennies. We find that there are 4 nickels and 12 dimes in the piggy bank.
Explanation:
Calculating the Number of Dimes and Nickels
Let's denote the number of nickels as N and the number of dimes as D. According to the problem, there are 8 more dimes than nickels, which means D = N + 8. Now, we need to convert the total value of coins into pennies because there are 100 pennies in one dollar.
The value of nickels and dimes in pennies is 5N (for nickels) and 10D (for dimes), respectively. Since the total amount is $1.40 or 140 pennies, we can express this as the equation 5N + 10D = 140.
Replacing D in the equation with N + 8 we get 5N + 10(N + 8) = 140. Simplifying this, we get 5N + 10N + 80 = 140, which simplifies further to 15N + 80 = 140.
Subtracting 80 from both sides gives us 15N = 60, and dividing both sides by 15 yields N = 4. This means there are 4 nickels.
To find the number of dimes, we substitute N with 4 in the earlier expression for D (D = N + 8) giving us D = 4 + 8, which equals 12.
Therefore, there are 4 nickels and 12 dimes.
I really need help on this question!!!
Answer:
The x-intercept is (6,0).
The y-intercept is (0,-21/2).
Step-by-step explanation:
So we are told this is a line.
Linear equations in the form y=mx+b tell us the slope,m, and the y-intercept,b.
So we are going to write our equation in this form to determine x- and y- intercept.
Let's begin.
First thing I'm going to is compute the slope. The slope can be found by lining up the points vertically and subtracting them vertically then put 2nd difference over 1st difference.
Let's do that:
( -10 , -28)
- ( -6 , -21)
-----------------------
-4 -7
So the slope is -7/-4 which is 7/4.
Now we know our equation to be in this form
y=(7/4)x+b
Use one of the points along with y=(7/4)x+b to find b.
Doesn't matter which one, you get to choose.
How about (-2,-14)?
-14=(7/4)(-2)+b
-14=-7/2+b
Add 7/2 on both sides:
-14+7/2=b
-21/2=b
So our equation is
[tex]y=\frac{7}{4}x-\frac{21}{2}[/tex]
So we already know the y-intercept is (0,-21/2).
We knew this because we were putting into slope-intercept form.
Now to find the x-intercept, set y=0 and solve for x:
[tex]0=\frac{7}{4}x-\frac{21}{2}[/tex]
Clear the fractions; multiply both sides by 4:
[tex]0=7x-42[/tex]
Add 42 on both sides:
[tex]42=7x[/tex]
Divide both sides by 7:
[tex]\frac{42}{7}=x[/tex]
So x=6
The x-intercept is (6,0).
A bull’s-eye with a 4-inch diameter covers 20 percent of a circular target. What is the area, in square inches, of the target?
Area of a circle is found using the formula: Area = π * r^2
Using 3.14 for π
Area of the bull'e eye = π * 2^2 = 4π = 4 * 3.14 = 12.56 square inches.
This is 20% of the entire target.
To find the area of the entire target, divide the area of the bull's eye by the percentage:
Area = 12.56 / 0.20 = 62.8 square inches.
Round the answer as needed.
Answer:
Area of target = 62.8 inch²
Step-by-step explanation:
A bull’s-eye with a 4-inch diameter covers 20 percent of a circular target.
Diameter of bull's eye = 4 inch
[tex]\texttt{Area of bull's eye = }\frac{\pi\times 4^2}{4}=12.56inch^2[/tex]
Given that bull’s-eye covers 20% of circular target.
[tex]\texttt{Area of bull's eye = }\frac{20}{100}\times \texttt{Area of target}\\\\\texttt{Area of target}\times 0.2=12.56\\\\\texttt{Area of target}=\frac{12.56}{0.2}=62.8inch^2[/tex]
Area of target = 62.8 inch²
Which formula gives the area of a triangle?
Answer:
C. A=1/2bh
The formula for the area of a triangle is 1/2bh
solve 12n+7p-6n=25p for n
Answer:
6n = 18p
Step-by-step explanation:
Answer: n=3p
Step-by-step explanation:
Find the correct sum of the polynomials (6x3 − 8x − 5) + (3x3 + 6x + 2).
Answer:
[tex]9x^3-2x-3[/tex]
Step-by-step explanation:
The question is
[tex](6x^3-8x-5)+(3x^3+6x+2)\\[/tex]
collect like terms
[tex](6x^3-8x-5)+(3x^3+6x+2)\\\\\\6x^3+3x^3-8x+6x-5+2\\\\\\9x^3-2x-3[/tex]
What is the axis of y=1/4pX2
Answer:
y=px^2/4
Step-by-step explanation:
Solve: The quantity 2 x minus 10 divided by 4 = 3x −10 −1 2 11
Answer:
-1
Step-by-step explanation:
2x-10
-------------- = 3x
4
Multiply each side by 4
2x-10
4*-------------- = 3x*4
4
2x-10 = 12x
Subtract 2x from each side
2x-10 -2x = 12x-2x
-10 = 10x
Divide each side by 10
-10/10 =10x/10
-1 =x
Answer:-1
Step-by-step explanation:GOT it right on my quiz (FLVS)
Solve the system of equations.
y= x2 - 6
y=-2x + 9
Answer:
(3,3)
(-5,19)
Step-by-step explanation:
y= x^2 - 6
y=-2x + 9
Set the two equations equal to each other y=y
x^2 - 6 =-2x + 9
Add 2x to each side
x^2 +2x- 6 =-2x+2x + 9
x^2 +2x- 6 = 9
Subtract 9 from each side
x^2 +2x- 6-9 =9- 9
x^2 +2x- 15 =0
Factor the left hand side
What 2 numbers multiply to -15 and add to 2
-3 *5 = -15
-3+5 = 2
(x-3) (x+5) =0
Using the zero product property
x-3 =0 x+5 =0
x=3 x=-5
Now we find y for each x
x=3
y=-2(3) + 9 = -6+9 =3
(3,3)
x=-5
y=-2(-5) + 9 = 10+9 =19
(-5,19)
Write the equation of a function whose parent function, f(x) = x + 8, is shifted 2 units to the right.
g(x) = x − 6
g(x) = x − 2
g(x) = x + 2
g(x) = x + 6
Answer:
[tex]g(x)=x+6[/tex]
Step-by-step explanation:
we have
[tex]f(x)=x+8[/tex]
If f(x) is shifted 2 units to the right
then
The rule of the translation is
[tex]g(x)=f(x-2)[/tex]
so
[tex]g(x)=(x-2)+8[/tex]
[tex]g(x)=x+6[/tex]
Answer: The correct option is
(D) [tex]g(x)=x+6.[/tex]
Step-by-step explanation: Given that the following function is shifted 2 units to the right :
[tex]f(x)=x+8~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)[/tex]
We are to write the equation when the function (i) is shifted 2 units to the right.
We know that
if a function is shifted 2 units to the right, then its x co-ordinate is reduced by 2 units.
Therefore, the equation of the new function is given by
[tex]g(x)=f(x-2)=(x-2)+8=x+6.[/tex]
Thus, the required function is [tex]g(x)=x+6.[/tex]
Option (D) is CORRECT.
Which linear function represents the line given by the point-slope equation y – 8 =1/2 (x – 4)? f(x) =1/2 x + 4 f(x) =1/2 x + 6 f(x) =1/2 x – 10 f(x) =1/2 x – 12
Answer:
The correct answer is f(x) =1/2 x + 6
Step-by-step explanation:
We have to convert the equation of line in the form of a function to compare with the options
Given equation of line is:
[tex]y-8=\frac{1}{2}(x-4)\\ Distributing\ 1/2\\y-8=\frac{1}{2}x-(4)(\frac{1}{2})\\y-8=\frac{1}{2}x-2\\y=\frac{1}{2}x-2+8\\y=\frac{1}{2}x+6[/tex]
Therefore, the correct answer is f(x) =1/2 x + 6 ..
Which of the following points is the intersection of the graphs given the equations y = x - 5 and y = 2x + 1?
A (1, 3)
B (-1, -4)
C (-2, -3)
D (-6, -11)
Answer:
D. x=-6 y= -11
Step-by-step explanation:
y= x -5
y= 2x +1
2y=2x- 10
y=2x+1
y= -11
-11= x-5
+5 +5
-6=x
PLEASE HELP ME!?!?! The equation of a standard pitcher’s mound in baseball is (x+5)^2 + (y+7)^2=81 The center the pitcher’s mound is ( , ).
The equation (x+5)^2 + (y+7)^2=81 is a variation of a circles standard formula (x - h)^2 + (y - k)^2 = r^2
The center of the circle is found by (h, k)
In this case:
h = -5
k = -7
Therefore the center is:
(-5, -7)
Hope this helped!
~Just a girl in love with Shawn Mendes
Catherine found that as she increase the price of a chocolate bar the numbers of sales per week decreased
Week1 149
Week2 143
Week3 137
Week4 131
Week5 125
A. write a formula for the arithmetic sequence that represents the number of sales per work.
B. Explain how you could use the information to predict the number of sales for the eighth week
Answer:
A. f(x)=155-6x
B. Plug in x=8 and solve.
Step-by-step explanation:
-we can develop an equation for this by first realizing that each week, the sales decrease by 6. thus, we know the amount of sales decreases by 6 every week so we know the formula is: the initial sales amount-6x (x being whatever week).
-we can find the initial amount by noting i=initial sales amount and using the Info from the first week.
149=i-6(1)
155=I
thus, the formula: f(x)=155-6x
- we can plug in 8=x to predict the sales amount on the eighth week:
155-6(8)
155-48
sales on eighth week=107
Identify an equation in point-slope form for the line perpendicular to
y= -2x + 8 that passes through (-3,9).
Answer:
y - 9 = 1/2(x + 3)
Step-by-step explanation:
For the equation y = -2x + 8, your slope, m, is -2. To find the slope for a line perpendicular to the original line, we do the opposite reciprocal of this number. The slope of the perpendicular line is 1/2.
Point-slope form is: y - y1 = m(x - x1) where x1 and y1 are the x- and y-coordinates of an ordered pair.
With this new slope for the perpendicular line, and the point we are given, we just plug in the info.
Your equation is: y - 9 = 1/2(x + 3)
Write as an algebraic expression and then simplify if possible The value in cents of d dimes
Answer:
10d cents.
Step-by-step explanation:
This is an everyday mathematics question, in which the value of the currency has to be known. It is a fact that:
1 dime = 10 cents and 1 cent = 1/10 dimes
These relationships can be used to determine the value of the dimes in terms of cents and the value of the cents in terms of dimes respectively. In the question, it is given that there are d dimes. Therefore, using the first formula, it can be inferred that:
d dimes = 10*d cents.
So, the value of d dimes in cents is 10d cents!!!
A student concluded that the solution to the
equation v2x+1+3=0 is x=4.
Do you agree? Explain why or why not.
Answer:
Step-by-step explanation:
The given equation is √2x+1+3=0
And we have been given that x= 4
I do not agree with the solution because it does not give any real solution. It only gives possible solution. If you plug the value 4 in the original equation you will get 8 and the square root of 8 is a complex number. Thus 4 is an extraneous solution....
Answer:
I do not agree with the student because there is no real solution.
Solving the equation only gives possible solutions, but you must check them in the original equation.
Checking the solution in the original equation shows that 4 is an extraneous solution.
Step-by-step explanation: