The area of the hexagon is 24 square m after dividing the figure into rectangles and parallelograms.
What is the area of the rectangle?It is defined as the area occupied by the rectangle in two-dimensional planner geometry.
The area of a rectangle can be calculated using the following formula:
Rectangle area = length x width
As we can see in the picture,
We can divide the figure into rectangles and parallelograms.
The area of the figure = area of the rectangle + area of the parallelogram
= 6×2 + 6×2
= 12 + 12
= 24 square m
Thus, the area of the hexagon is 24 square m after dividing the figure into rectangles and parallelograms.
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Which function could be represented by this graph?
1004
50
-50
-1009
Oy=()* y = 10² ○ y = 10x ○ y = 5*
The exponential function that could be represented by the graph is given as follows:
\(y = 10^x\)
How to define an exponential function?An exponential function has the definition presented as follows:
\(y = ab^x\)
In which the parameters are given as follows:
a is the value of y when x = 0.b is the rate of change.The graph crosses the y-axis at y = 1, hence the parameter a is given as follows:
a = 1.
When x is increased by one, y is multiplied by 10, as we have that when x = 1, y = 5 and when x = 2, y = 50, hence the parameter b is given as follows:
b = 10.
Hence the function is given as follows:
\(y = 10^x\)
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Ms. Lu is adding a new room to her
dollhouse. The room will be a cube with
volume 64 cubic inches. What is the length
of the new room?
The length of the new room is 4 inches.
How to find the volume of a cube?
The formula for volume of a cube is given by;
V = l³
where;
V is volume
l is side length of cube
Now, we are given;
Volume of cube = 64 in³
Thus;
l³ = 64
l = ∛64
l = 4 inches
Thus, we conclude that the length of the new room is 4 inches.
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Find RS. Explain your reasoning.
6x + 5 9x - 4
RS=
The value of line RS is 23
How to determine the valueFrom the diagram shown, we have that line PS, line PQ, line QR and line RS form a square.
Note that the sides of a square are equal to each other.
The relationship is represented as;
Line PS = Line PQ = Line QR = Line RS
We have that;
Line PS = 6x - 5Line RS = 9x - 4Substitute the expressions
6x - 5 = 9x - 4
Now, collect like terms
6x - 9x = - 4 - 5
Subtract the like terms
-3x = -9
Make 'x' the subject of formula
-3x/-3 = -9/-3
x = 3
Then, RS = 9x - 4 = 9(3) - 4 = 27 - 2 = 23
Hence, the value is 23
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Find the unit rate.
Kenny reads
3/8 page in 2/3 minutes.
Answer:
15/ 16
Step-by-step explanation: 3/2 x 5/8= 15/16
you flip 2/3 to 3/2 and multiply it
What is 2/3 x 3/4 please help
Answer:
1/2
Step-by-step explanation:
Which expression is equivalent to
128x5y8
?
Answer:
Step-by-step explanation:
Next time please include the answer choices.
128x^5*y^8 is equivalent to (2^7)*x^5*y^8
There are 4 cups of flour in 3 batches of cookies . How many cups are in one batche.
Answer: Around 1.33 Cups per batch
Step-by-step explanation:
4 / 3 ≈ 1.33
Answer:
1 1/3
Step-by-step explanation:
Math
Aaron’s boat travels 9 mile per hour in still water. The speed of the river is 4 miles per hour. How long will it take Aaron to travel 18 miles downstream
Answer:
who will answer??
Step-by-step explanation:
It will take Aaron 1.38 hours to travel 18 miles downstream as per time distance calculation.
What is time and distance calculation?"To work out speed, divide the distance of the journey by the time it took to travel, so speed = distance divided by time. To calculate time, divide distance by speed. To get the distance, multiply speed by time.
You may see these equations simplified as s=d/t, where s is speed, d is distance, and t is time."
Given, speed of Aaron's boat is 9 miles per hour.
Speed of the river is 4 miles per hour.
Therefore, speed of Aaron's boat downstream is
= (9 + 4) miles per hour = 13 miles per hour.
Therefore, in order to travel 18 miles downstream Aaron will need
= \(\frac{18}{13}\) hours = 1.38 hours.
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which expression is equivalent to the area of square A, in square centimeters? 1/2(24)(45) 24(45)
Expressiοn which is equivalent tο the area οf square A, in square centimeters is squared 24 squared + 45 squared
What is a Square centimetres?A square centimetre (cm²) is a unit οf measurement οf area. 1 square centimeter is equal tο the area οf a square with sides that measure 1 centimeter.
A square area is a measurement made up οf twο lengths. Square units οf area, such as square centimeters, are a result οf multiplying twο lengths. In the case οf square centimeters, each length is measured in centimeters, sο multiplying centimeters × centimeters results in cm². The measured area dοes nοt need tο be in the shape οf a square; any area can be calculated, οr estimated, as the area made up by sοme number οf unit squares.
Fοr example, a 4 cm × 2 cm rectangle is made up οf 8 squares with an area οf 1 cm² each. The rectangle therefοre has an area οf 8 cm²:
Given the fοllοwing :
Small square = 24cm
Medium square = 45cm
Large square =?
Frοm the diagram attached;
Since the three squares fοrms a right-angle triangle, with the leg οf the large square fοrming the hypοtenus.
Thus, the expressiοn tο calculate the area can thus be :
Hypοtenus² = οppοsite² + adjacent²
A² = 24² + 45²
Recall that the area οf a square is the square οf any οf it's side, since the sides οf a square are are equal, that is A²
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Cοmplete Questiοn:
Which expressiοn is equivalent tο the area οf square A, in square centimeters? 3 squares are pοsitiοned tο fοrm a triangle. The small square is labeled 24 centimeters, medium square is 45 centimeters, and large square is nοt labeled. One-half (24) (45) 24 (45) (24 + 45) squared 24 squared + 45 squared
4x^2=x+3
Solve by factoring
Show your work please!
Answer:
x = - \(\frac{3}{4}\) , x = 1
Step-by-step explanation:
4x² = x + 3 ← subtract x + 3 from both sides
4x² - x - 3 = 0 ← in standard form
consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 4 × - 3 = - 12 and sum = - 1
the factors are - 4 and + 3
use these factors to split the x- term
4x² - 4x + 3x - 3 = 0 ( factor the first/second and third/fourth terms )
4x(x - 1) + 3(x - 1) = 0 ← factor out (x - 1) from each term
(x - 1)(4x + 3) = 0 ← in factored form
equate each factor to zero and solve for x
4x + 3 = 0 ( subtract 3 from each side )
4x = - 3 ( divide both sides by 4 )
x = - \(\frac{3}{4}\)
x - 1 = 0 ( add 1 to both sides )
x = 1
solutions are x = - \(\frac{3}{4}\) , x = 1
Find the maximum and minimum points of the function y = –2 cos (x + π/2) + 1.
The maximum and minimum points of the function are (a) (3π/2, -1) (-π/2, -1), (π/2, 3)
How to determine the maximum and minimum points of the function?From the question, we have the following function that can be used in our computation:
y = –2 cos (x + π/2) + 1.
Calculating the maximum
Here, we have
y = –2 cos (x + π/2) + 1.
Next, we plot the graph of the function
From the graph of the function, we have the maximum points to be (π/2, 3)
Calculating the minimum
Here, we have
y = –2 cos (x + π/2) + 1.
Next, we plot the graph of the function
From the graph of the function, we have the minimum points to be
(3π/2, -1) (-π/2, -1)
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Linear sequence of 35/100,5/10,65/100
The linear rule for the sequence is f(n) = 7/20 + 3/20(n - 1)
Finding the linear rule for the sequenceFrom the question, we have the following parameters that can be used in our computation:
35/100,5/10,65/100
In the above sequence, we can see that 15/100 is added to the previous term to get the new term
This means that
First term, a = 35/100
Common difference, d = 15/100
The nth term is then represented as
f(n) = a + (n - 1) * d
Substitute the known values in the above equation, so, we have the following representation
f(n) = 35/100 + 15/100(n - 1)
So, we have
f(n) = 7/20 + 3/20(n - 1)
Hence, the explicit rule is f(n) = 7/20 + 3/20(n - 1)
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Calculate the sector area: 16 in 90°
Therefore , the solution of the given problem of area comes out to be
r = 8.
Define area.The term "area" describes the amount of space occupied by a 2D form or surface. We use cm2 or m2 as our units for measuring area. A shape's area is determined by dividing its length by its breadth.
Here,
A 90 degree sector occupies 1/4 of a circle, which has 360 degrees. Consequently, the area of the whole circle can be written as
Sector Size/Sector Area = Circle Area/360
16 ft2/90 = n/360
(360) (16 ft2)/90 = n
(4)(16 ft2) = n
The total size of the circle is n = 64 ft2.
Since Area of a Circle equals r2,
∏r2 = 64
r2 = 64/∏
r = √(64/∏)
We multiply by / to get by rationalizing the denominator.
r = √(64∏)/√(∏2) Then using the denominator's square root, we can obtain the solution of
r = √(64∏)/∏
r = 8
Therefore , the solution of the given problem of area comes out to be
r = 8.
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You have 2 jars of marbles. The first jar contains a blue marble, a yellow marble, and a purple marble. The second jar contains a green marble, a blue marble, and a pink marble. Write out the sets that represent all the colors of the marbles.
The set containing all the colors of the marbles is given as follows:
{blue, yellow, purple, green, pink}.
What is the set of elements?A set of elements is composed by elements that respect a given characteristic, or are present in an experiment.
In this problem, we need to find the colors present in each marble, which are given as follows:
First jar: Blue marble, yellow marble and purple marble.Second jar: Green marble, blue marble and pink marble.Then we have to list all these colors in a set, which are opened and closed by the brackets {}.
The color blue appears in both sets, however, it will appear only once in the set of the colors, as the elements are not repeated.
Thus, the set containing all the colors of the marbles is given by the set presented as follows:
{blue, yellow, purple, green, pink}.
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The half-life of Potassium-40 is about 1.25 billion years.
a) Determine the value of k and the equation of decay for Potassium-40. (Round to three decimal places)
b) A specimen currently contains 36 milligrams of Potassium-40. How long will it take the specimen to decay to only 15 milligrams of Potassium-40? (Round to two decimal places)
c) How many milligrams of Potassium-40 will be left after 300 million years if your specimen currently has 36 milligrams? (Round to two decimal places) (Hint: This is 0.3 billion years)
d) How long will it take Potassium-40 to decay to one-eighth of its original amount? (Round to two decimal places)
a) The value of k is 5.54 × 10⁻¹⁰ and the equation of the decay is N(t) = N0 * eⁿˣ.
b) It will take 1,578,843,530 years to decay to only 15 milligrams of Potassium-40.
What does the decay constant actually mean in the context of radioactive decay?The decay constant is the likelihood of a radioactive nucleus decaying per unit of time. It is a key characteristic of radioactive material that governs the rate of decay. The rate of material degradation increases with the value of the decay constant.
a) The decay constant is a constant value that is independent of the sample's size or age for a specific sample of radioactive material.
Given that, Potassium-40 follows an exponential decay model.
Thus,
t(1/2) = ln(2)/k
where t(1/2) is the half-life.
Substituting the given half-life, we get:
1.25 × 10⁹ = ln(2)/k
k = ln(2)/(1.25 × 10^9) ≈ 5.54 × 10⁻¹⁰ per year
The decay equation for Potassium-40 as:
N(t) = N0 * eⁿˣ
Hence, the value of k is 5.54 × 10⁻¹⁰ and the equation of the decay is N(t) = N0 * eⁿˣ.
b) Tο find οut hοw lοng will it take the specimen tο decay tο οnly 15 milligrams οf Pοtassium-40, we have tο substitute a = 36, f(x) = 15 and k = 5.545 ×10⁻¹⁰:
\($\begin{array}{l}{{15=36e^{-5.545\times10^{-10}t}}}\\ {{{\dfrac{15}{36}}=e^{-5.545\times10^{-10}t}}}\end{array}$\)
\($\ln{\frac{15}{36}}=-5.545\times10^{-10t}$\)
\($t={\frac{\ln15-\ln36}{-5.5285\times10^{-10}}}$\)
= 1,578,843,530
Thus, It will take 1,578,843,530 years to decay to only 15 milligrams of Potassium-40.
c) Tο find οut hοw many milligrams οf Pοtassium-40 will be left after 300 milliοn years, we have tο substitute a = 36, t = 300,000,000 and k = 5.545 × 10⁻¹⁰:
\($\begin{array}{l}{{f(x)=36e^{-5.545\times10^{-10}(300,000,000)}}}\\ {{=36e^{-0.16635}}}\\ {{\approx30.48}}\end{array}$\)
Abοut 30.48 grams οf Pοtassium-40, will be left after 300 milliοn years.
d) Tο find οut hοw lοng will it take Pοtassium-40 tο decay tο οne eight οf its οriginal amοunt, we have tο substitute a = 36, f(x) = 36/8 and k = 5.545 × 10⁻¹⁰:
\(${\frac{36}{8}}=36e^{-5.545\times10^{-10}t}$\)
\(${\frac{1}{8}}=e^{-5.545\times10^{-10}t}$\)
\($\ln{\frac{1}{8}}=-5.545\times10^{-10}t$\)
\($ \rm t={\frac{\ln1-\ln8}{-5.545\times10^{-10}}}$\)
= 3,750,120,003
It will take 3,750,120,003 years for a Potassium-40 to decay to one-eighth of its original amount.
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Drag the expressions to the table to show whether the product is less than 3/4, greater than 3/4, or equal to 3/4.
1/3 x 3/4
5/2 x3/4
7/7 x3/4
3/4 x3/4
9/7 x3/4
5/5 x3/4
A fraction 3/4 is called greater than 3/4 if,
Numerator > denominator,
Otherwise it is less than 3/4 ,
\(\frac{1}{3} \times \frac{3}{4}=\frac{1}{4}\)
\($$\begin{aligned}&\frac{5}{2} \times \frac{3}{4}=\frac{15}{8} \\&\because 8 < 15 \\&\Longrightarrow \frac{5}{2}\times \frac{3}{4} < 3/4 \\&\frac{7}{7} \times \frac{3}{4}=\frac{3}{4} \\&\because 3 < 4 \\&\Longrightarrow \frac{3}{4} \times \frac{3}{4} = 1 \\& \frac{9}{7} \times \frac{3}{4}=\frac{27}{28} \\&\because 28 > 27 \\&\Longrightarrow \frac{5}{5} \times \frac{3}{4} > \frac{3}{4} \end{aligned}$$\)
A fraction represents a portion of a total. This entire may refer to a place or a group of places. The Latin word "fraction," which meaning "to break," is the source of the English term "fraction." The distribution of food and supplies as well as the lack of a metal currency were among the mathematical issues that the Egyptians utilized fractions to solve because they were the first civilization to understand fractions.
Only verbal descriptions of a portion of the whole were used to write fractions in ancient Rome. The numerator and denominator of fractions were first written in India with one number above the other, but without a line. The line used to divide the numerator and the denominator was only added by Arabs.
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this leads us to a sturm-louiville problem in x. in each case the general solution in x is written with constants a and b
An example of a boundary value problem is the Sturm-Liouville problem, which entails determining the eigenvalues and eigenfunctions of a differential equation that complies with specific boundary requirements.
The general formula for the Sturm-Liouville problem's solution in x is y(x) = a * f(x) + b * g(x), where a and b are constants and f(x) and g(x) are the differential equation's eigenfunctions. When the differential equation and boundary conditions are solved, the eigenvalues and eigenfunctions are discovered.
For instance, if the differential equation has the following form: -y" + q(x)y = lambda* w(x)y where y is the dependent variable, y" is the second derivative of y, q(x) and w(x) are functions of x, and lambda is the eigenvalue, the boundary conditions can be of the following
form: where L is the length of the interval on which the differential equation is defined, y(0) = 0, and y(L) = 0.
The general solution in x can be expressed in the form: y(x) = a * f(x) + b * g(x), where a and b are constants and f(x) and g(x) are the eigenfunctions of the differential equation. The eigenvalues and eigenfunctions can be discovered by solving this differential equation and the boundary conditions.
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Please help me solve this, it’s the last question.
The value of the double integration is 7776 after solving and integration. the answer is 7776.
What is integration?It is defined as the mathematical calculation by which we can sum up all the smaller parts into a unit.
It is given that:
Double integration (x + y) dA
y = x²
y² = 216x
y = √216 √x
∫∫(√216 √x + x²)
After solving:
\(\rm \int _0^{36}\int _0^6\:\left(\sqrt{216}\:\sqrt{x}\:+\:\:x²\right)dxdy\)
=7776
Thus, the value of the double integration is 7776 after solving and integration. the answer is 7776.
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Wanda bought a sweater for 25% off. If the original price of the sweater was $56, how much was the discount Wanda received?
Answer: 14 dollar discount
Step-by-step explanation:
A group of people were asked how many people live in their household. How many said they have 3 or more in their household?
Answer:
11
Step-by-step explanation:
we know this because there are 5 people saying they have 3 and 6 people saying they have between 4-7
Which transformation
The following rigid transformations are done on each figure:
The figure B is the consequence of rotating figure A about the origin either 90° clockwise or 270° counterclockwise. (Correct choice: A)The figure B is the consequence of rotating figure A about the origin either 90° counterclockwise or 270° clockwise. (Correct choice: D)What kind of rigid transformation is done on the given figure?We find two pictures, each with one case of rigid transformation done on a polygon. Rigid transformations are transformations done on geometric loci such that Euclidean distance at every point of the loci are conserved.
If we consider that the Euclidean distance is the radial distance with respect to the origin of the Cartesian plane, then we find the rigid transformation corresponding to each case:
The figure B is the consequence of rotating figure A about the origin either 90° clockwise or 270° counterclockwise.The figure B is the consequence of rotating figure A about the origin either 90° counterclockwise or 270° clockwise.To learn more on rigid transformations: https://brainly.com/question/1761538
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identify the problems with the pictured graph. multiple select question. there is no 0 value on the vertical axis. the time range needs to be specified. there is no problem. the price of oil cannot be graphed against time. the vertical axis limit is too high.
Therefore, after answering the given query, we can state that The issues with the graph shown are as follows, according to the information provided: The vertical axis does not have a 0 value.
What is graphs?Graphs are used by mathematicians to rationally represent or chart facts or values. Often, a graph tip will show a connection between objects in an image. A graph is a type of non-linear data structure that is made up of nodes, or polygons, and edges. affix the nodes, also referred as as vertices. This graph includes endpoints E=1, 2, 1, 3, 2, 4, and (2.5) and vertices V=1, 2, 3, 5. (3.5). (4.5). graphs of exponential growth in the form of data charts (bar plots, data tables, line charts, etc.). an equilateral triangle-shaped logarithmic graph.
The issues with the graph shown are as follows, according to the information provided:
The vertical axis does not have a 0 value.
The time frame must be mentioned.
Too much vertical axis space is allowed.
Hence, the appropriate choices are:
The vertical axis does not have a 0 value.
The time frame must be mentioned.
Too much vertical axis space is allowed.
The information given makes it unclear whether or not the fourth alternative is viable.
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work out the total surface area of this triangular prism 12cm by 5cm by 10cm by 13cm
To calculate the total surface area of a triangular prism, we need to find the area of each face and add them up.
The triangular faces have base 5cm and height 12cm, so each one has an area of:
(1/2) x 5cm x 12cm = 30cm²
There are two of these faces, so their combined area is:
2 x 30cm² = 60cm²
The rectangular faces have dimensions 5cm x 10cm and 5cm x 13cm, so their areas are:
5cm x 10cm = 50cm²
5cm x 13cm = 65cm²
Again, there are two of these faces, so their combined area is:
2 x (50cm² + 65cm²) = 230cm²
Finally, we add up the areas of all the faces to get the total surface area:
60cm² + 230cm² = 290cm²
Therefore, the total surface area of this triangular prism is 290cm².
PLEASE HELP ME ON QUESTION ASAP!!
IF YOU HAVE A TOPIC LIST IN YOUR EXAMS AND IT SAYS AVERAGES AND THE RANGE ARE YOU GOING TO BE HAVING MEAN AND RANGE IN YOUR TEST OR MEAN, RANGE MODE, MIDPOINT BASICALLY ALL OF IT ? IF ANSWERS CORRECT ILL RATE YOU FIVE STARS, GIVE YOU A THANKS AND MAYBE EVEN BRAINLIEST (sorry for caps)
Answer:
Step-by-step explanation:
Typically yes you need to know
Mean
Median
Mode
and Range
Mean = average, add all numbers then divide by how many
Median = midpoint, middle number. Be sure to list numbers from small to large if there are 2 middle numbers (this happens when there are an even amount), take the average of the 2 middle numbers
Mode = numbers that occurs the most in the list of numbers
Range = This is the largest number minus the smallest number.
A model rollercoaster is built to a scale of 1:32. In the model rollercoaster, the angle between the ground and the steepest slope is 110°. What is the angle between the ground and steepest slope on the real rollercoaster?
The angle between the ground and the steepest slope on the real rollercoaster is approximately 89.998°.
A model rollercoaster is built to a scale of 1:32. In the model rollercoaster, the angle between the ground and the steepest slope is 110°.What is the angle between the ground and the steepest slope on the real rollercoaster?
To determine the angle between the ground and the steepest slope on the real rollercoaster, you need to consider the scale of the model rollercoaster.To find the real rollercoaster angle, you should use a scale factor that relates the model rollercoaster to the real one.
The scale factor should multiply the model angle to obtain the real one. Since the scale factor relates the model length to the real length, it should relate the horizontal distance and the vertical height.
The horizontal and vertical lengths are in a ratio of 32:1 for the model. This means that for every 32 units in the model, there is one unit in the real rollercoaster. Therefore, we can say that the horizontal length of the real rollercoaster is 32 times the horizontal length of the model rollercoaster.
That is:h(real) = 32h(model)Similarly, the vertical height of the real rollercoaster is 32 times the vertical height of the model rollercoaster. That is:v(real) = 32v(model)
The tangent of an angle equals the vertical height divided by the horizontal distance. Therefore, the tangent of the real angle equals the tangent of the model angle times the scale factor.
That is:tanθ(real) = 32tanθ(model)By substitution,θ(real) = arctan(32tanθ(model))For the given model angle of 110°,
the corresponding real angle is:θ(real) = arctan(32tan110°)θ(real) = arctan(32(-2.74747741945462))θ(real) = arctan(-87.91927694142864)θ(real) ≈ -89.998°
The negative sign indicates that the angle is measured below the horizontal line.
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3.
Joel and Carina have just purchased a 2875 square foot house, and 80% of it is carpeting. They would like to replace all of the existing carpeting with new carpet. The distributor only
sells carpet by the square meter. Use the fact that 1 ft2.09m2, to determine how many square meters will they need?
AO 207 square meters
BO 25,556 square meters
CO 259 square meters
DO 21 square meters
Answer:
BO 25556
Step-by-step explanation:
the 2875x0.80
1ft 2.092÷ answer then Times by original =
25556
given the following geometric sequence, find the common ratio. 0,45,0.9,1.8,
Answer:
The common ratio is 2.
Step-by-step explanation:
If a given set of elements represents a geometric, each pair of elements must the one and same ratio. That is:
\(\frac{n_{i+1}}{n_{i}} = r, \forall\,i\in \mathbb{N}\), \(n_{i}, n_{i+1}\in N\)
Where:
\(n_{i}\) - i-th element of the given set.
\(N\) - Set of elements.
If we know that \(n_{1} = 0.45\), \(n_{2} = 0.9\) and \(n_{3} = 1.8\), then common ration is:
\(\frac{n_{2}}{n_{1}} = \frac{n_{3}}{n_{2}} = 2\)
The common ratio is 2.
if z=1-i then find the argumed of z
The argument of the complex number z = 1 - i is approximately -0.785 radians.
What is the argument in complex numbers?
In complex numbers, the argument (also called the amplitude or angle) of a complex number is the angle that the complex number makes with the positive x-axis in the complex plane. It is usually expressed in radians and is denoted by arg(z).
Given a complex number z = 1 - i, the argument of z can be found using the inverse tangent function (atan). In this case, we want to find the angle θ such that tan(θ) = (imaginary part of z) / (real part of z):
θ = atan((-1) / 1) = -π/4 radians
Hence, the argument of the complex number z = 1 - i is approximately -0.785 radians.
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Given f(x)=5x+2 and g(x)=-3x-4, find the following: a. f(g(0))
b. f(f(3))
c. (g of)(0)
d. (g o g)(2)
9514 1404 393
Answer:
a. -18
b. 87
c. -10
d. 26
Step-by-step explanation:
For evaluating functions with different arguments, I find a calculator to be helpful.
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If you want to do this by hand, put the argument value where the variable is and do the arithmetic. It is helpful to know that
\((f\circ g)(x)=f(g(x))\)
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For example, ...
a. f(g(0)) = f(-3(0) -4) = f(-4) = 5(-4) +2 = -18
Integral of 1/(x+cosx)
The integral is ln|x + cos(x)| + C, where C represents the constant of integration.
To find the integral of the function 1/(x + cos(x)), we can employ a combination of algebraic manipulation and the use of standard integration techniques. Here's the solution:
First, let's rewrite the integral in a slightly different form to simplify the process:
∫(1/(x + cos(x))) dx
We notice that the denominator, x + cos(x), is not amenable to direct integration. To overcome this, we employ a substitution. Let's set u = x + cos(x). Now, differentiate u with respect to x: du/dx = 1 - sin(x).
Rearranging this equation, we get dx = du/(1 - sin(x)).
Substituting these values, the integral becomes:
∫(1/(u(1 - sin(x)))) du
Next, we simplify further by factoring out 1/(1 - sin(x)) from the integral:
∫(1/(u(1 - sin(x)))) du = ∫(1/u) du = ln|u| + C
Replacing u with its original expression, we have:
ln|x + cos(x)| + C
Therefore, the answer to the integral is ln|x + cos(x)| + C, where C represents the constant of integration.
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