The expression (2x-3)(2x-3) is equal to (2x-3)^2.
To expand the expression (2x-3)(2x-3), we can use the FOIL method (which stands for First, Outer, Inner, Last).
Multiplying the first terms of each binomial, we get 2x times 2x, which is 4x^2.
Multiplying the outer terms, we get -3 times 2x, which is -6x.
Multiplying the inner terms, we get -3 times 2x again, which is also -6x.
Multiplying the last terms of each binomial, we get -3 times -3, which is 9.
Combining like terms, we get 4x^2 - 12x + 9.
Therefore, (2x-3)(2x-3) is equal to (2x-3)^2, which is equivalent to 4x^2 - 12x + 9.
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What is the volume of the following rectangular prism?
Answer:
1/10 units ^3
Step-by-step explanation:
The formula for the volume is given by
V = Bh where B is the area of the base and h is the height
V = 3/20 units ^2 * 2/3 units
= 3/20 * 2/3
= 1/10 units ^3
A bakery offers a sale price of 2.55 for 4 muffins.what is the price per dozen?
I hope someone answers fast
And explain what you did
Answer: $7.65 for a dozen/12
Step-by-step explanation: 2.55 x 3
Copy and complete the table below for the graph of
y = 2x + 1.
What values should replace A and B?
X
Y
-1
-1
-
0
A
1
3
23
B
3
7
Answer:
A is 1
B is 5
Step-by-step explanation:
0 times 2 is 0 plus 1 is 1 that gives the answer to A
2 times 2 is 4 plus 1 is 5 which gives you B
What is the domain of the function in the graph?
The domain of the function shown in the graph is the one in option A:
6 ≤ k ≤ 11
What is the domain of the function in the graph?The domain of a function y = f(x) is the set of the inputs of the function. To identify the domain in a graph, we need to look at the horizontal axis (also called the x-axis).
On the graph we can see that it starts at x = 6 with a closed dot, and it ends at x = 11 also with a closed dot.
That means that these values belong to the domain, so we can write the domain as follows:
Domain = 6 ≤ k ≤ 11
(notice that the variable in the horizontal axis is k).
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URGENT!! ILL GIVE
BRAINLIEST! AND 100 POINTS
The required match of exponents is below the description with the correct solving steps in the solution part.
What are the laws of the exponents?The product rule is an exponent rule that states that when you multiply similar bases, the add exponents.
For example, (a²)·(a³) = a²⁺³ = a⁵
1. How many times larger is 2 x 10⁻² then 3 x 10⁻⁶
Subtract by getting the same exponent to be like terms.
2. What is the difference between 2 x 10⁻² and 3 x 10⁻⁶?
Subtract coefficients and then add the exponents.
3. If you are 400 times 2 x 10⁻² away from the sun, how far are you?
Multiply by changing the number to Scientific Notation - multiply coefficients and add exponents.
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Using the convolution theorem, show that L⁻¹ {1 / (s²+b²)² = 1/2b³ (sin bt - bt cos bt)
Hence, solve the differential equation d²y/dt² - 4y = t cos 2t. given that y and dy/dx are both zero when t = 0.
The solution to the given differential equation is L⁻¹{Y(s)} = (b³ t sin 2t) / (2 (sin bt - bt cos bt))
To solve the differential equation using the convolution theorem, we'll follow these steps:
Take the Laplace transform of both sides of the differential equation.
Use the convolution theorem to simplify the resulting expression.
Take the inverse Laplace transform to obtain the solution in the time domain.
Let's start with step 1:
Given differential equation: d²y/dt² - 4y = t cos 2t
Taking the Laplace transform of both sides, we get:
s²Y(s) - sy(0) - y'(0) - 4Y(s) = L{t cos 2t}
Where Y(s) represents the Laplace transform of y(t), y(0) is the initial condition for y(t) at t = 0, and y'(0) is the initial condition for dy/dt at t = 0.
The Laplace transform of t cos 2t can be found using the Laplace transform table:
L{t cos 2t} = -Im{d/ds[1 / (s² - (2i)²)]}
= -Im{d/ds[1 / (s² + 4)]}
= -Im{(-2s) / [(s² + 4)²]}
= 2Im{(s) / [(s² + 4)²]}
Now let's simplify the expression using the convolution theorem:
The Laplace transform of the convolution of two functions, f(t) and g(t), is given by the product of their individual Laplace transforms:
L{f * g} = F(s) G(s)
In our case, f(t) = y(t) and g(t) = 2Im{(s) / [(s² + 4)²]}.
Therefore, F(s) = Y(s) and G(s) = 2Im{(s) / [(s² + 4)²]}.
Multiplying F(s) and G(s), we get:
Y(s) G(s) = Y(s) 2Im{(s) / [(s² + 4)²]}
Now, we can rewrite the left-hand side of the equation using the convolution theorem:
Y(s) * 2Im{(s) / [(s² + 4)²]} = L{t cos 2t}
Taking the inverse Laplace transform of both sides, we have:
L⁻¹{Y(s) * 2Im{(s) / [(s² + 4)²]}} = L⁻¹{L{t cos 2t}}
Simplifying the right-hand side using the inverse Laplace transform table, we get:
L⁻¹{Y(s) * 2Im{(s) / [(s² + 4)²]}} = t sin 2t / 4
Now, we can apply the convolution theorem to the left-hand side of the equation:
L⁻¹{Y(s) * 2Im{(s) / [(s² + 4)²]}} = L⁻¹{Y(s)} * L⁻¹{2Im{(s) / [(s² + 4)²]}}
The inverse Laplace transform of 2Im{(s) / [(s² + 4)²]} can be found using the inverse Laplace transform table:
L⁻¹{2Im{(s) / [(s² + 4)²]}} = 1 / 2b³ (sin bt - bt cos bt)
Therefore, we have:
L⁻¹{Y(s)} * 1 / 2b³ (sin bt - bt cos bt) = t sin 2t / 4
From this, we can deduce the inverse Laplace transform of Y(s):
L⁻¹{Y(s)} = (t sin 2t / 4) / (1 / 2b³ (sin bt - bt cos bt))
Simplifying further:
L⁻¹{Y(s)} = (b³ t sin 2t) / (2 (sin bt - bt cos bt))
This is the solution to the given differential equation.
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The shampoo Eva likes to use costs $6 for a 24-ounce bottle. The conditioner she likes to use costs $12 for a 30-ounce bottle. How much more per ounce does her conditioner cost than her shampoo?
Answer:
0.15
Step-by-step explanation:
6 divided by 24 equals 0.25
12 divided by 30 equals 0.4
0.4 minus 0.25 is 0.15
Yu,collin,and Sydney spent $284 to make bracelets. They sold the bracelets for $674. If they split the profits evenly,how much did each person earn?
Answer:
130
Step-by-step explanation:
674 - 284 = 390
3 partners
390/3 = 130
The fifth grade has 152 students. Each student has 18
pencils. About how many pencils do the students have altogether?
There are total of 152 students in 5th grade, then the number of pencils altogether will be equal to 2,736 pencils.
What are arithmetic operations?The four basic operations of arithmetic can be used to add, subtract, multiply, or divide two or even more quantities.
They cover topics like the study of integers and the order of operations, which are relevant to all other areas of mathematics including algebra, data processing, and geometry.
As per the given information in the question,
Total number of students in 5th grade = 152
Amount of pencil each student have = 18
Then, the total number of pencils altogether,
= 152 × 18
= 2,736 pencils.
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how many five-digit numbers are there that do not have two consecutive digits the same? for example, you would count 12104 and 12397 but not 6321 (it is not five digits) or 43356 (it has two consecutive 3s).
There are 59049 five-digit numbers are there that do not have two consecutive digits the same.
As per the given data:
We have to determine how many five-digit numbers are there that do not have two consecutive digits the same.
The selection of numbers from 0-9 for all digits
The first digit may not be a zero.
So, the first digit has 9 choices from 1-9.
The second digit can be any of the numbers from 0-9 except the first digit.
So, the second digit also has 9 choices.
The third digit can be any of the numbers from 0-9 except the second digit.
So, the third digit also has 9 choices.
The fourth digit can be any of the numbers from 0-9 except the third digit.
So, the fourth digit also has 9 choices.
The fifth digit can be any of the numbers from 0-9 except the fourth digit.
So, the fifth digit also has 9 choices.
According to the question, all five digits have 9 choices as two consecutive digits are not the same.
So, the Number of the digit is 9 × 9 × 9 × 9 × 9 = \(9^{5}\) as shown here.
Hence, the answer is 59049 numbers.
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3(12x – 9) + 9 = 2x + 4
Would this be infinite solution, one solution or no solution?
Answer:
One solution
Step-by-step explanation:
Let us first expand the left side of the equation to rid of the parenthesis:
\(3*12x-3*9+9=2x+4\\36x-27+9=2x+4\\36x-18=2x+4\)
Now let us isolate the variable to sove for x:
\(36x-2x=4+18\\34x=22\\x=\frac{22}{34}\\x=\frac{11}{17}\)
Therefore, x=\(\frac{11}{17}\). As you can see, there is just one solution.
I hope this helps! Please let me know if you have any further questions :)
The diameter of a circle is 17 ft. Find its area to the nearest whole number.
Answer:
\(\boxed{\mathtt{Area \approx 227ft^{2}}}\)
Step-by-step explanation:
\(\textsf{We are asked to find the area of a circle.}\)
\(\textsf{First, we should identify the formula for the area of a circle.}\)
\(\large\underline{\textsf{Formula:}}\)
\(\mathtt{Area = \pi (radius)^{2}}\)
\(\textsf{The radius is \underline{half} of the diameter.}\)
\(\mathtt{\frac{17}{2} = 8.5ft.}\)
\(\textsf{Let's begin solving for the area.}\)
\(\large\underline{\textsf{Substitute:}}\)
\(\mathtt{Area = \pi (8.5)^{2}}\)
\(\mathtt{Area = 72.25 \pi}\)
\(\boxed{\mathtt{Area \approx 227ft^{2}}}\)
Which equations represent valid proportions? Check all that apply.
StartFraction 4 over 18 EndFraction = StartFraction 6 over 27 EndFraction
StartFraction 4 over 6 EndFraction = StartFraction 16 over 36 EndFraction
Three-fourths = StartFraction 9 over 12 EndFraction
StartFraction 5 over 9 EndFraction = StartFraction 8 over 12 EndFraction
Answer:
A and C.
Step-by-step explanation:
A. 4/18 = 6/27 2/9 = 2/9 (Correct)
B. 4/6 = 16/36 2/3 = 4/9 (Unequal)
C. 3/4 = 9/12 3/4 = 3/4 (Correct)
D. 5/9 = 8/12 5/9 = 2/3 (Unequal)
The solution to the given system is (3,8).
Step-by-step explanation:
To draw a graph system for a linear equation,
Step 1: Consider two x values and draw a line joining the new points.
y = x + 5 ⇒1
y = 2x + 2 ⇒2
For both equations substitute two random values for x.
Let us Consider x=0 and x=10.
For equation 1,
y=x+5. y=x+5
y=0+5. y=10+5
y=5 y=15
The new points for equation 1 are (0,5) and (10,15).
Draw a big straight line passing through these two points.
For equation 2,
y=2x+2. y=2x+2
y=0+2. y=20+2
y=2 y=22.
The new points for equation 1 are (0,2) and (10,22).
Again, draw a big straight line passing through these two points.
Step 2: Mark the intercepting point and that will be the solution for the given system.
For this system, the solution is (3,8).
To check this answer equates both equations,
x+5=2x+2.
2x-x=5-2.
x=3.
Substitute the x value in any of the equations,
y=3+5.
y=8.
No links! & help me please
Answer:
150.72 units³
Step-by-step explanation:
The formula for solving the volume of a cylinder is:
V = pi (3.14) r² h
V = (3.14) (4) (3)
V = 150.72 units³
f(x) = 3(x + 1)2 – 27.
Answer:
x=7
2
Step-by-step explanation:
0=6 (x+1) –27
Remove the parentheses
0=6x+6 ‐27
Calculate
0=6×‐21
Move the variable to left
‐6x=21
Divide both sides
which of the following is the value of x?
9514 1404 393
Answer:
x = 20°
Step-by-step explanation:
Assuming parallel lines, the two angles marked with measures are complementary to each other.
45° +(5x +35°) = 180°
5x = 100° . . . . . . . . . . . . subtract 80° from both sides
x = 20° . . . . . . . . divide by 5
_____
Comment on the geometry
Where a transversal crosses parallel lines, all of the obtuse angles are congruent, and all of the acute angles are congruent. Of course, the acute angles and obtuse angles are linear pairs, hence supplementary. (The only time this won't apply is when all angles are right angles.)
No lines are marked as parallel here, nor does any part of this problem statement say there are parallel lines. So, we cannot find the value of x if we're going strictly by what is shown in the diagram. In the absence of any information, we can only say that the angle marked with an x-expression must be between 0° and 180°.
0 ≤ 5x +35 ≤ 180 ... -35 ≤ 5x ≤ 145 ... -7 ≤ x ≤ 29.
More expression help!
What is the sum of 18 tenths and 82 hundredths?
Answer:
8380 is the answer of the question
Triangle ABC is translated by the rule (x, y) → (x - 1, y + 6) then reflected across the y- axis. What are the coordinates of A”,B”, and C”?
The coordinates of A'', B'' and C'' are (-1, 4), (-4, 3) and (-1, 2) respectively.
What is Geometric Transformation?Transformation of geometrical figures or points is the manipulation of a given figure to some other way.
Different types of transformations are Rotation, Reflection, Glide reflection, Translation and Dilation.
Given triangle has coordinates,
A(2, -2), B(5, -3) and C(2, -4).
First the triangle is translated by the rule (x, y) → (x - 1, y + 6)
A(2, -2) becomes A'(2 - 1, -2 + 6) = A'(1, 4).
B(5, -3) becomes B'(5 - 1, -3 + 6) = B'(4, 3)
C(2, -4) becomes C'(2 - 1, -4 + 6) = C'(1, 2)
Then the translated triangle is reflected across the Y axis.
When reflected a point (x, y) across the Y axis, y coordinate remains same and x coordinate flips.
A'(1, 4) becomes A''(-1, 4)
B'(4, 3) becomes B''(-4, 3)
C'(1, 2) becomes C''(-1, 2)
Hence the vertices of the triangle after undergoes translation and reflection becomes A''(-1, 4), B''(-4, 3) and C''(-1, 2).
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help please??? and thank you! <33
Answer:
90.69 Rounded to the nearest tenth is 90.7
Step-by-step explanation:
✓ Rounded to the nearest 0.1 or
the Tenths Place.
✓ Hopefully this helps you! :)
wishing you a amazing day! ・゚★,。・
-Keira <33
what type of standard score has m = 0 and sd = 1?
The type of standard score that has a mean (m) of 0 and a standard deviation (sd) of 1 is known as the Z-score.
The Z-score, also referred to as the standard score, is a statistical measure that standardizes a given value in a distribution. It indicates how many standard deviations a particular value is away from the mean of the distribution. When the mean (m) is 0 and the standard deviation (sd) is 1, the resulting Z-score is based on this standardization. The formula for calculating the Z-score is (x - m) / sd, where x represents the value being standardized. By using this formula with m = 0 and sd = 1, the Z-score provides a standardized value that allows for comparisons and analysis across different datasets with varying means and standard deviations.
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The purchasing habits of 1,000 grocery shoppers are noted. No associalion is found between the variables. Fill in the empty portion of the table with values that would support this claim. Explain reasoning.
Here is the completed table that shows the purchasing habits of 1000 grocery shoppers :
bought milk bought no milk Total
bought eggs 422 228 650
bought no eggs 150 200 350
Total 572 428 1000
What is a two-way frequency table?A two-way frequency table is used to display data on the frequencies for two categorical variables.
The total number of people who bought eggs = 422 + 228 = 650
The total number of people who bought no eggs = 1000 - 650 = 350
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20 points plz helpppppp
Answer:
not sure but I think its the second one
Answer:
it's B i believe
Step-by-step explanation:
SLOPE OF THE LINE DRAWL ON THE GRAPH
The slope of the given line is expressed as: Slope = 2
How to find the slope of the line?The slope of a line is defined as a measure of its steepness. Mathematically, the line slope is calculated as "rise over run" that is (change in y divided by change in x).
The formula for slope between two coordinates is expressed as:
Slope = (y₂ - y₁)/(x₂ - x₁)
The two coordinates we will use from the graph are:
(4, 0) and (0, -8)
Thus:
Slope = (-8 - 0)/(0 - 4)
Slope = 2
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how to prove there exists an integer b such that for all integers n > b, n^3 - 8 is prime
The given statement " there exists an integer b such that for all integers n > b, n^3 - 8 is prime." is proved by contradiction.
Consider the sequence of integers a_n = n^3 - 8 for n = 1, 2, 3, .... By assumption, for every integer b, there exists an integer m > b such that a_m is not prime. Let p be a prime factor of a_m. Then, p is a prime factor of a_n for all n that are multiples of m.
Consider the sequence of integers a_{km} for k = 1, 2, 3, .... By the above reasoning, each term in this sequence has a prime factor p. However, as k becomes larger, a_{km} becomes arbitrarily large, and thus the prime factor p must eventually be smaller than a_{km}. This means that there exists an integer n such that a_n has a prime factor p that is smaller than a_n itself.
But this is a contradiction, since a_n cannot have a prime factor smaller than itself. Therefore, our assumption that there does not exist an integer b such that for all integers n > b, n^3 - 8 is prime must be false. Hence, there exists an integer b such that for all integers n > b, n^3 - 8 is prime.
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What’s an equivalent fraction to 5/6 that has a denominator of 12
Answer:
An equivalant faction would be 10/12
Step-by-step explanation:
Answer:
10/12
Step-by-step explanation:
12/6 = 2
5/6 * 2/2 = 10/12
Answer: 10/12
plz help me with this
Answer:
4) 49 degrees
plz mark as brainliest
Answer:
the answer is no4 hope it helps u
Factor each polynomial using the difference of two perfect squares
Number 5
So for the difference of perfect squares factor with the numbers on both factors having to be the same, but one adds and one subtracts.
\(m^2-\frac{1}{9}\)\(\begin{gathered} \text{The formula is} \\ a^2-b^2=(a+b)(a-b)_{} \end{gathered}\)\(m^2-\frac{1}{9}=(m+\frac{1}{3})(m-\frac{1}{3})\)I need help solving this problem , I don’t understand how or what it’s asking me .
Answer:
Step-by-step explanation:
99
One more for today since I couldn’t find the answer