Step-by-step explanation:
tan39=27/x
0.80x=27
x=33.75
plz make me brainliest
(1 point) for each of the following, solve exactly for the variable x. (a) x−x33! x55!−⋯=0.4 x= equation editorequation editor (b) 1 3x 9x2 27x3 ⋯=3
a) The variable x ≈ 0.958
b) x = 2/3
(a) We can rewrite the equation as follows:
\(x - x^3/3! + x^5/5! - ... = 0.4\)
Let's group the terms with even exponents together and the terms with odd exponents together:
\((x^2/2! - x^4/4! + x^6/6! - ...) - (x^3/3! - x^5/5! + x^7/7! - ...) = 0.4\)
Now we can recognize the series expansions for sine and cosine:
cos(x) - sin(x) = 0.4
Using a calculator, we can solve for x to get:
x ≈ 0.958
(b) We can rewrite the series as follows:
\(1/(3x) + 1/(9x^2) + 1/(27x^3) + ... = 3\)
Let's multiply both sides by 3x:
\(1 + 3/(3x) + 3/(9x^2) + 3/(27x^3) + ... = 9x\)
Now we can recognize the series expansion for the geometric series:
\(1 + r + r^2 + r^3 + ... = 1/(1 - r)\)
where r = 1/3x. So we have:
\(1 + 3/(3x) + 3/(9x^2) + 3/(27x^3) + ... = 1/(1 - 1/3x)\)
Multiplying both sides by (1 - 1/3x), we get:
\((1 - 1/3x) + 3/(3x)(1 - 1/3x) + 3/(9x^2)(1 - 1/3x) + 3/(27x^3)(1 - 1/3x) + ... = 1\)
Simplifying the right-hand side gives:
1 - 1/3 + 1/3 = 1
And simplifying the left-hand side gives:
2/3x = 1
So we have:
x = 2/3
for such more question on variable
https://brainly.com/question/18042457
#SPJ11
a farmer can buy two types of plant​ food, mix a and mix b. each cubic yard of mix a contains pounds of phosphoric​ acid, pounds of​ nitrogen, and pounds of potash. each cubic yard of mix b contains pounds of phosphoric​ acid, pounds of​ nitrogen, and pounds of potash. the minimum monthly requirements are pounds of phosphoric​ acid, pounds of​ nitrogen, and pounds of potash. if mix a costs ​$ per cubic yard and mix b costs ​$ per cubic​ yard, how many cubic yards of each mix should the farmer blend to meet the minimum monthly requirements at a minimum​ cost? what is this​ cost?
To solve this problem, we need to set up a system of equations based on the given information. Let's assume that the farmer needs x cubic yards of mix a and y cubic yards of mix b.
For phosphoric acid, the equation would be:
x * pounds of phosphoric acid in mix a + y * pounds of phosphoric acid in mix b = pounds of phosphoric acid required
For nitrogen, the equation would be:
x * pounds of nitrogen in mix a + y * pounds of nitrogen in mix b = pounds of nitrogen required
For potash, the equation would be:
x * pounds of potash in mix a + y * pounds of potash in mix b = pounds of potash required
We can solve this system of equations using substitution or elimination method. Once we find the values of x and y, we can calculate the total cost.
Since the question asks for the answer in more than 100 words, I'll provide an explanation for the solution process.
1. Set up the equations using the given information.
2. Solve the system of equations to find the values of x and y.
3. Substitute the values of x and y into the cost equation to find the total cost.
The solution to the problem is to blend x cubic yards of mix a and y cubic yards of mix b to meet the minimum monthly requirements at a minimum cost. The total cost can be calculated by substituting the values of x and y into the cost equation.
To know more about equations visit
https://brainly.com/question/14686792
#SPJ11
which angle is 260° is it obtuse right reflex or acute angle
Answer:
An obtuse angle is a type of angle whose degree measurement is more than 90° but less than 180°. Examples of obtuse angles are: 100°, 120°, 140°, 160°, 170°, etc.
To find the sum of 4/10 and 3/100 how must 4/10 be expressed before adding it to 3/100
Answer:
It should be expressed as 40/100.
Step-by-step explanation:
The denominators should be equal
The length of a rectangle is 5 centimeters less than 2 times the width.
a. Write a polynomial expression that represents ( 2 points )
the area of the rectangle.Simplify the expression.
Given:
The length of a rectangle is 5 centimeters less than 2 times the width.
To find:
The polynomial expression that represents the area of the rectangle, then simplify the expression.
Solution:
Let \(x\) be the width of the rectangle.
The length of a rectangle is 5 centimeters less than 2 times the width.
2 times the width = \(2x\)
5 centimeters less than 2 times the width = \(2x-5\)
Length of the rectangle = \(2x-5\)
We know that, the area of a rectangle is:
\(A=length \times width\)
\(A=(2x-5)\times x\)
\(A=2x^2-5x\)
Therefore, the required polynomial expression is \(A=(2x-5)\times x\) and its simplified form is \(A=2x^2-5x\).
Suppose the graph of a cubic polynomial function
has the same zeroes and passes through the
coordinate (0, -5).
Write the equation of this cubic polynomial
function
Recall that the zeroes are (2.0), (3, 0), and (5,0).
What is the y-intercept of this graph?
-5
-2
3
5
negative five point zero
Answer:
A) -5Step-by-step explanation:
I got the answer right on Edge 2021. Hope this helps!
Find the exact length of the curve. x = 6 + 12t^2, y = 9 + 8t^3, 0 lessthanorequalto t lessthanorequalto 5 Please, keeping in mind that the are length formula for parametric curves is L = Find the exact length of the curve. x = e^t + e^-t, y = 5 - 2t, 0 lessthanorequalto t lessthanorequalto 4
Let u = e^t + √(5), then du/dt = e^t and dt = du / (e^t) = du / u. L ≈ 15.52 units (rounded to two decimal places).To find the exact length of a curve given by parametric equations, we can use the formula L = ∫a to b √(dx/dt)^2 + (dy/dt)^2 dt.
For the first curve, we have x = 6 + 12t^2 and y = 9 + 8t^3, where 0 ≤ t ≤ 5. Taking the derivatives, we get dx/dt = 24t and dy/dt = 24t^2. Substituting into the formula, we have:L = ∫0 to 5 √(24t)^2 + (24t^2)^2 dtL = ∫0 to 5 √(576t^2 + 576t^4) dtL = ∫0 to 5 24t√(1 + t^2) dtThis integral cannot be solved exactly using elementary functions, so we need to use numerical methods to approximate the answer. Using a numerical integration method like Simpson's rule, we get:L ≈ 784.37 units (rounded to two decimal places)For the second curve, we have x = e^t + e^-t and y = 5 - 2t, where 0 ≤ t ≤ 4. Taking the derivatives, we get dx/dt = e^t - e^-t and dy/dt = -2.
Substituting into the formula, we have:L = ∫0 to 4 √(e^t - e^-t)^2 + (-2)^2 dtL = ∫0 to 4 √(e^(2t) - 2 + e^(-2t) + 4) dtL = ∫0 to 4 √(e^(2t) + 2e^t + 5) dtThis integral can be solved exactly using trigonometric substitution. Let u = e^t + √(5), then du/dt = e^t and dt = du / (e^t) = du / u. Substituting, we get:L = ∫(e^0 + √5) to (e^4 + √5) 1/2 du / uL = [ln(u)] from (e^0 + √5) to (e^4 + √5)L = ln(e^4 + √5) - ln(1 + √5)Using a calculator, we get:L ≈ 15.52 units (rounded to two decimal places)
Learn more about trigonometry here: brainly.com/question/29002217
#SPJ11
Rewrite each of the following expressions by replacing the indirection operator (*) with the index operator ([..]). Each identifier refers to an array. a). *(tax + 4) b) *(score + 2)
c) *(number + 10) d) *prices
In C programming language, the indirection operator (*) is used to dereference a pointer variable and access the value stored at the memory location pointed to by the pointer. The index operator ([]), on the other hand, is used to access the value stored at a particular index of an array.
In the given expressions, each identifier refers to an array. To replace the indirection operator with the index operator, we simply need to replace the pointer arithmetic expression (i.e., the pointer name plus an integer) with the index of the array.
For example, the expression *(tax + 4) can be rewritten as tax[4]. This means we are accessing the value stored at the memory location pointed to by the pointer tax, which is the fifth element of the array tax (since arrays in C are zero-indexed).
Similarly, *(score + 2) can be rewritten as score[2], which accesses the value stored at the third element of the array score. *(number + 10) can be rewritten as number[10], which accesses the value stored at the eleventh element of the array number. And *prices can be rewritten as prices[0], which accesses the value stored at the first element of the array prices.
By replacing the indirection operator with the index operator, we can access the values stored in the arrays using their indices, which simplifies the syntax and makes the code easier to read and understand.
Learn more about operator here:
https://brainly.com/question/28098932
#SPJ11
A random number from 1 to 5 is selected 50 times. The number 1 is selected 13 times, 2 is selected 8 times, 3 is selected 14 times, 4 is selected 6 times, and 5 is selected 9 times. What is the relative frequency of selecting a 2? What is the relative frequency of selecting a 3?
How many shipping containers are there in the world.
There are approximately over 60 million shipping containers in the world. Containers are stacked and arranged in these ports, creating an impressive sight and highlighting the scale of global trade.
Shipping containers are standardized metal boxes used for transporting goods by sea, rail, or road. They come in various sizes, including 20-foot and 40-foot lengths. These containers have revolutionized global trade, allowing for efficient and secure transportation of goods across long distances. While exact numbers are challenging to determine due to factors such as container movement and usage, estimates suggest that there are over 60 million shipping containers worldwide. This vast quantity of containers enables the global economy to function smoothly by facilitating the movement of goods between countries and continents.
The extensive use of shipping containers has led to the establishment of container ports and specialized container ships that can accommodate large numbers of containers.Moreover, repurposing shipping containers for alternative uses, such as modular homes or pop-up shops, has gained popularity in recent years, demonstrating the versatility and durability of these units.
learn more about global trade here
brainly.com/question/29885031
#SPJ11
what is the remainder when 2202 202 is divided by 2101 251 1? (2020amc10b problem 22) (a) 100 (b) 101 (c) 200 (d) 201 (e) 202
To solve this problem, we can use the Chinese Remainder Theorem. We need to find the remainder when 2202 202 is divided by both 2101 and 251.
First, note that 2101 and 251 are relatively prime. Therefore, by the Chinese Remainder Theorem, there exists a unique remainder between 0 and 2101 * 251 - 1 (inclusive) that satisfies the two conditions.
To find this remainder, we can use the remainders when 2202 202 is divided by 2101 and 251.
Note that 2202 is congruent to 101 (mod 2101) and 0 (mod 251). Therefore, we can use the Chinese Remainder Theorem to find that the remainder when 2202 202 is divided by 2101 * 251 is congruent to:
101 * (251^2) * (251^(-1)) + 0 * (2101^2) * (2101^(-1)) (mod 2101 * 251)
Using the fact that 251^(-1) is congruent to 201 (mod 2101) and 2101^(-1) is congruent to 1922 (mod 251), we can simplify this expression to:
101 * (251^2) * (201) + 0 * (2101^2) * (1922) (mod 2101 * 251)
Simplifying further, we get:
101 * 251 * 201 (mod 2101 * 251)
This is congruent to 101 * 201 (mod 251), which is congruent to 101 (mod 251).
Therefore, the remainder when 2202 202 is divided by 2101 251 1 is 101, which is option (b).
Learn more about Remainder Theorem here:- brainly.com/question/30242306
#SPJ11
It is known that 2x-3/x = x + 1 What is the value of x^2 -x + 3
The value of the equation x² - x + 3 is 37/9.
We have,
We can start by multiplying both sides of the equation by x:
2x - 3/x = x + 1
2x - 3 = x^2 + x
Rearranging and simplifying, we get:
x^2 - x + 3 = (2x - 3) + x^2
x^2 - x + 3 = x^2 + 2x - 3
-x + 3 = 2x - 3
5 = 3x
x = 5/3
Now we can substitute x into the equation x^2 - x + 3:
x^2 - x + 3 = (5/3)^2 - 5/3 + 3
x^2 - x + 3 = 25/9 - 15/9 + 27/9
x^2 - x + 3 = 37/9
Therefore,
The value of x² - x + 3 is 37/9.
Learn more about equations here:
https://brainly.com/question/17194269
#SPJ1
Which angles are congruent to each other?
Angle 4 and Angle 3
Angle 3 and Angle 7
Angle 8 and Angle 5
Angle 1 and Angle 3
Answer:
1 and 3 are congruent
Answer:
Angle 1 and angle 3 are congruent
Joelle wants to center a painting on a wall that is 16.9 feet long. how much space will be between the end of the wall and the painting?
The equation to find the amount of space between the end of the wall and the painting is x = 16.9 - 2 * space, where 'x' represents the length of the painting and 'space' represents the unknown space.
To find the amount of space between the end of the wall and the painting, we need to subtract the length of the painting from the length of the wall and divide it by 2.
Given that the wall is 16.9 feet long and the painting is to be centered, we can assume the painting's length is unknown. Let's represent it as 'x'.
Therefore, the equation becomes (16.9 - x) / 2 = space between the end of the wall and the painting.
To solve for x, we can multiply both sides of the equation by 2 to get rid of the fraction, resulting in 16.9 - x = 2 * (space between the end of the wall and the painting).
Next, we simplify the equation to 16.9 - x = 2 * space.
To isolate x, we subtract 2 * space from both sides, resulting in x = 16.9 - 2 * space.
To determine the exact amount of space between the end of the wall and the painting, we would need to know the value of 'space'. Unfortunately, it is not provided in the question.
In summary, the equation to find the amount of space between the end of the wall and the painting is x = 16.9 - 2 * space, where 'x' represents the length of the painting and 'space' represents the unknown space.
Know more about multiply here,
https://brainly.com/question/30875464
#SPJ11
how to make a square with 50px sides tracy
To create a square with 50px sides, we need to draw four lines that are each 50px long and perpendicular to one another.
A square is a quadrilateral (a four-sided shape) with four equal sides and four equal angles of 90 degrees each. To create a square with 50px sides, we need to follow a few steps.
Step 1: Draw a line that is 50px long using a ruler or any other measuring tool.
Step 2: At the end of the line, draw a second line that is also 50px long and perpendicular to the first line. This will form the first side of the square.
Step 3: From the end of the second line, draw a third line that is also 50px long and perpendicular to the second line. This will form the second side of the square.
Step 4: Finally, draw a fourth line that is 50px long and perpendicular to the third line, connecting back to the starting point of the first line. This will form the remaining two sides of the square.
By following these steps, you have successfully created a square with 50px sides.
In summary, a square is a four-sided shape with four equal sides and angles of 90 degrees each. The resulting shape will be a square with 50px sides.
To know more about square here.
https://brainly.com/question/14198272
#SPJ4
Match the expression is equivalent to 5(2x+3) when using the distributive property?
(5*2x)+3
5(3+2x)
10x + 15
25x
Answer:
10x + 15
Step-by-step explanation:
5(2x + 3) ← multiply each term in the parenthesis by 5
= 10x + 15
Solve for the volume of this irregular polygon. Show your work
16 cm
16 cm
5 cm
6 cm
24 cm???? HELP
Answer:
36,864
Step-by-step explantion:
Please help me with the below question.
Answer:
its blury i can't understand
13.5 + 0.5n = 19.5 , solve for n
Answer:
12
Step-by-step explanation:
13.5 + 0.5n =19.5
0.5n=19.5 - 13.5
0.5n=6
n=6/0.5
n=12
3 1/2 + 1 1/3 = ??
Simply your answer and show ur work
Answer:
29/6
Step-by-step explanation:
Answer: 29/6 or 4 5/6
Step-by-step explanation:
3+1 = 4
Find a common denominator between 1/2 and 1/3
1/2 becomes 3/6 and 1/3 becomes 2/6
2/6 + 3/6 = 5/6
Now add the 4 back:
4 5/6
Henry was thinking of a number. Henry divides by 2, then adds 10 to get an answer of 15. What was the original number?
Answer:
Henry was thinking of the number 10.
Step-by-step explanation:
Variable x = Henry's original number
Set up an equation:
x ÷ 2 + 10 = 15
Isolate variable x:
x ÷ 2 = 5
x = 10
A tore i having a ale on jelly bean and trail mix. For 8 pound of jelly bean and 3 pound of trail mix, the total cot i $21. For 2 pound of jelly bean and 5 pound of trail mix, the total cot i $18. Find the cot for each pound of jelly bean and each pound of trail mix
Jelly beans are $1.5/lb and trail mix is $2.063/lb, according to the data.
What kind of concoction is trail mix?A heterogeneous mixture would be a trail mix. When the components of a combination are dispersed unevenly across the mixture, the mixture is said to be heterogeneous. As a mixture of nuts, raisins, and other seeds, trail mix cannot have an evenly distributed dispersion of its ingredients.
briefing:t = trail mix, j = jelly beans
3t + 8j = 21
5t + 2j = 18
Solving the first for t
2t = 6j - 3
t = (6j - 3)/2
Substituting
5(6j - 3)/2 + 2j = 18
j = 51/34
j = 1.5, Jelly beans cost $1.5/lb
now,
8t + 3(1.5) = 21
8t = 16.5
t = 2.0625, trailmix costs $2.063 dollars/lb
to know more about jelly bean problems visit :
https://brainly.com/question/22523058
#SPJ4
Does the function model exponential growth or decay? f(t)= 5*7/3^t
Answer:
Read it carefully below
Step-by-step explanation:
Based on the formula you provided, the function appears to model exponential decay. In general, exponential decay occurs when the growth rate of a quantity is proportional to its current value, and the growth rate is a fixed constant less than 1.
In this case, the growth rate is given by the constant factor 7/3 (which is less than 1), and the function uses the variable t as the exponent. As t increases, the value of the function decreases exponentially.
a box with a swuare base and open top much have a voume of 32cm^3. find the dimensions of the box that minimise the amount of material used
The dimensions of the box that minimize the amount of material used are a square base with side length 4√2 cm and a height of 2√2 cm..
To minimize the amount of material used, we need to minimize the surface area of the box.
Let's call the height of the box "h" and the length of each side of the square base "x".
The volume of the box is given by V = x^2 * h = 32 cm^3.
We want to minimize the surface area, which consists of the area of the base (x^2) and the four sides (4xh). So the surface area is given by:
A = x^2 + 4xh
We can solve for h in terms of x using the volume equation:
h = 32 / x^2
Substituting this into the surface area equation, we get:
A = x^2 + 4x(32/x^2)
Simplifying this equation, we get:
A = x^2 + 128/x
To minimize the surface area, we need to find the value of x that makes the derivative of A with respect to x equal to zero:
dA/dx = 2x - 128/x^2 = 0
Solving for x, we get:
x = 4√2 cm
Substituting this value back into the equation for h, we get:
h = 2√2 cm
So the dimensions of the box that minimize the amount of material used are a square base with side length 4√2 cm and a height of 2√2 cm.
To know more about surface area visit:
https://brainly.com/question/29298005
#SPJ11
find f(t). ℒ−1 s (s + 1)2
The function f(t) corresponding to the Laplace transform ℋ(f(t)) = ℋ{s(t)} is:
f(t) = u(t) + 2te^(-t) + t^2/2 u(t)
To find f(t) from the Laplace transform ℋ(f(t)), we need to apply the inverse Laplace transform ℒ⁻¹ to ℋ(f(t)).
Given ℋ(f(t)) = ℋ{s(t)}, we have:
ℒ⁻¹{ℋ(s(t))} = ℒ⁻¹{ℋ[(s + 1)²/s]} = ℒ⁻¹{ℋ[s/s] + ℋ[2s/(s+1)²] + ℋ[1/(s+1)²]}
Using the properties of Laplace transforms and taking the inverse Laplace transforms, we get:
f(t) = u(t) + 2te^(-t) + t^2/2 u(t)
where u(t) is the unit step function.
Therefore, the function f(t) corresponding to the Laplace transform ℋ(f(t)) = ℋ{s(t)} is:
f(t) = u(t) + 2te^(-t) + t^2/2 u(t)
Learn more about Laplace transform here:
https://brainly.com/question/1597221
#SPJ11
PLEASE HELP IT WILL MEAN A LOT TO ME
Answer:
1= 4/10 (simplified it would be 2/5)
2= 64/100 (16/25 would be the simplified version)
3= 2 75/100 (simplified it would be 3/4)
4=0.36
5= 3.5
6=3.2
Hope this helps :)
Step-by-step explanation:
A performance appraisal based on the number of cars sold or percentage of defects on an assembly line is an example of a(n) _____ since it is quantifiable.
A performance appraisal based on the number of cars sold or the percentage of defects on an assembly line is an example of a quantifiable performance metric.
A quantifiable performance metric is a measure that can be expressed in numerical terms. In the case of a performance appraisal based on the number of cars sold, it provides a clear and objective measure of an employee's sales performance. The higher the number of cars sold, the better the performance. Similarly, measuring the percentage of defects on an assembly line allows for an assessment of the quality of work. A lower percentage of defects indicates better performance in ensuring product quality and customer satisfaction.
Quantifiable performance metrics have several advantages. First, they provide an objective basis for evaluating performance, as they are not influenced by subjective opinions or biases. Second, they allow for easy comparison and benchmarking across individuals or teams, providing a standardized measure of performance. Finally, quantifiable metrics enable organizations to set clear goals and targets, which can motivate employees to strive for improved performance. However, it's important to note that relying solely on quantifiable metrics may overlook other important aspects of performance, such as teamwork, customer service, or innovation. Therefore, a well-rounded performance appraisal system should consider a combination of both quantifiable and qualitative measures to provide a comprehensive evaluation.
Learn more about metric here:
https://brainly.com/question/24248807
#SPJ11
Bonus: double your money! One bank promises they can double your money if you invest
with them. If that were true, and you started with just 1 penny, how many doublings would you
need to reach your pennies to the moon?
Answer:
Y'all playing with me........right???
Calculate the area of the parallelogram
Answer:
28 square inches
Step-by-step explanation:
Area = b * h
To find the height, you first have to solve the triangle.
\(a^{2} +b^{2} =c^{2} \\\\3^{2} +h^{2} =5^{2} \\h^{2} =5^{2} -3^{2} \\h=4\)
Now use that for your area
Area = 7 * 4
Square ABCD is shown below. It has an area of 16 square units.
Answer:
Correct. 16 when 4x4=16 or just count the inside.
Step-by-step explanation: