Answer:
8c + 10
Step-by-step explanation:
Divide 2/2:
6c - 1 + 2c + 11
Then Collect Like Terms:
6c + 2c = 8c
-1 + 11 = 10
Final: 8c + 10
Four students majoring in Mathematics and five students majoring in Chemistry are eligible to attend a conference. How many ways are there to select four students to attend the conference if a) any four can attend
The number of ways of selecting the four students out of nine students for attending the conference is equals to the 126 from using the combination formula.
The number of combinations of n things taken r at a time is determined by the combination formula. It is the factorial of n, divided by the product of the factorial of r and the factorial of the difference of n and r respectively. Mathematically, it can be written as \(ⁿCᵣ= \frac{ n!}{r! ( n - r)!}\)
Now, we have number of students majoring in Mathematics = 4
Number of students majoring in chemistry = 5
So, total number of students majoring = 9
Four students are selected to attend conference. Here, n = 9, r = 4 so,
Number of ways to any four can attend =
\( 9C_4 = \frac{ 9!}{4! ( 9 - 4)!}\)
\(= \frac{ 9×8×7×6×5!}{4! 5!}\)
\(=\frac{ 9×8×7×6}{4×3×2}\)
= 18× 7 = 126
Hence, required value is 126.
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For the second application, 3.2 MB has been downloaded. How much is left to download?
The amount of megabytes left to download is 6.8 mb
How to illustrate the expression?Mathematical operations include addition, subtraction, multiplication, and division. The expression x + y, for instance, consists of the terms x and y with an addition operator in between them.
In this situation, John wants to download an two applications that are 10 MB and the second application, 3.2 MB has been downloaded.
The application left to download will be:
= Total mb - mb download
= 10 - 3.2
= 6.8 mb
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Complete question
John wants to download an two applications that are 10 MB. For the second application, 3.2 MB has been downloaded. How much is left to download?
need help with this !
Answer:
(-2,14) Hope this helps! Have a great day!!!
the method of reduction of order can also be used for the nonhomogeneous equationa. trueb. false
The method of reduction of order is a technique used to find a second solution to a homogeneous linear differential equation when one solution is already known.
However, it cannot be directly used for nonhomogeneous linear differential equations. In nonhomogeneous equations, the method of undetermined coefficients or variation of parameters is typically used to find a particular solution.
Therefore, the statement "the method of reduction of order can also be used for the nonhomogeneous equation" is false. It is important to understand the different techniques for solving differential equations, and to choose the appropriate method based on the type of equation and boundary conditions given.
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Nolan bought a bag of parsnips that weighed 2 1/2 pounds. he also bought a bag of turnips that weighed 5 times as much as the parsnips. how many pounds of turnips did nolan buy?
According to the given statement of the Nolan bought 5 pounds of turnips.
To find out how many pounds of turnips Nolan bought, we need to calculate the weight of the turnips. We are given that the bag of parsnips weighed 2 1/2 pounds.
The weight of the turnips is 5 times the weight of the parsnips. To find the weight of the turnips, we can multiply the weight of the parsnips by 5.
2 1/2 pounds can be written as 2 + 1/2 pounds.
To multiply a whole number by a fraction, we multiply the whole number by the numerator and divide by the denominator.
So, 2 * (1/2) = 2/2 = 1
Therefore, the parsnips weigh 1 pound.
Now, we can calculate the weight of the turnips by multiplying the weight of the parsnips (1 pound) by 5.
1 pound * 5 = 5 pounds.
Therefore, Nolan bought 5 pounds of turnips.
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The weight of the parsnips that Nolan bought is 2 1/2 pounds. To find out how many pounds of turnips Nolan bought, we need to multiply the weight of the parsnips by 5, since the turnips weigh 5 times as much as the parsnips. Nolan bought 12 1/2 pounds of turnips.
First, we need to convert the mixed number 2 1/2 to an improper fraction. To do this, we multiply the whole number (2) by the denominator (2) and add the numerator (1). This gives us 5 as the numerator, and the denominator remains the same (2). So, 2 1/2 is equal to 5/2.
Now, let's multiply the weight of the parsnips (5/2 pounds) by 5 to find the weight of the turnips. When we multiply a fraction by a whole number, we multiply the numerator by the whole number and keep the denominator the same.
So, 5/2 multiplied by 5 is (5 * 5) / (2 * 1) = 25/2 = 12 1/2 pounds.
Therefore, Nolan bought 12 1/2 pounds of turnips.
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As monte carlo simulation is essentially statistical sampling, the larger the number of trials used, the more precise is the result.
a. True
b. False
True, Monte Carlo simulation is used for statistical sampling where larger number of trials are used for the precise result.
Step by Step Explanation:
Monte Carlo simulation is a mathematical technique or statistical sampling which is used to predict all possible outcomes of any uncertain event.The larger the number of trials more is the accuracy as it is based on the past data to predict the future outcomes.example : For the prediction of first month sale of any new launch product you can revise more number of old data.It help to calculate probability more accurately.Therefore, it is true to have more number of trials in Monte Carlo simulation statistical sampling for precise result.
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what is the probability of rolling at least one even number or a sum of 3 using two number cubes?
Answer:you could do
You would need to rile a two and a one together though
the statistical technique used to estimate future values by successive observations of a variable at regular intervals of time that suggest patterns is called _____.
trend analysis
The statistical technique used to estimate future values by successive observations of a variable at regular intervals of time that suggest patterns is called trend analysis.
Trend analysis is a statistical technique that helps identify patterns and tendencies in a variable over time. It involves analyzing historical data collected at regular intervals to identify a consistent upward or downward movement in the variable.
By examining the sequential observations of the variable, trend analysis aims to identify the underlying trend or direction in which the variable is moving. This technique is particularly useful when there is a time-dependent relationship in the data, and past observations can provide insights into future values.
Trend analysis typically involves plotting the data points on a time series chart and visually inspecting the pattern. It helps in identifying trends such as upward or downward trends, seasonality, or cyclic patterns. Additionally, mathematical models and statistical methods can be applied to quantify and forecast the future values based on the observed trend.
This statistical technique is widely used in various fields, including finance, economics, marketing, and environmental sciences. It assists in making informed decisions and predictions by understanding the historical behavior of a variable and extrapolating it into the future.
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find an equation of the tangent line to the curve at the given point. y = ln(x2 โ 5x + 1), (5, 0)
The equation of the tangent line to the curve y = ln(x^2 - 5x + 1) at the point (5,0) is y = 0.
To find the equation of the tangent line to the curve y = ln(x^2 - 5x + 1) at the point (5,0), we need to find the slope of the tangent line at that point.
The derivative of y = ln(x^2 - 5x + 1) is:
y' = (2x - 5)/(x^2 - 5x + 1)
At the point (5,0), we have:
y' = (2(5) - 5)/(5^2 - 5(5) + 1) = 0
So the slope of the tangent line at (5,0) is 0.
The equation of the tangent line can be written as:
y - y1 = m(x - x1)
where (x1, y1) is the point of tangency and m is the slope.
Since the slope is 0, we have:
y - 0 = 0(x - 5)
which simplifies to:
y = 0
Therefore, the equation of the tangent line to the curve y = ln(x^2 - 5x + 1) at the point (5,0) is y = 0.
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A plant that floats on the surface of rural bodies of water is known as duckweed. The initial mass of a population of duckweed is 500g The mass of the population triples every Ͷͷ hours and can be represented by the function m(t)= 500x3^t/45 where (t) is time in hours. Determine how many hours it would take for the duckweed to grow to a mass triple the original size.
Therefore , the solution of the given problem of function comes out to be the duckweed to grow a mass triple the original size will be 45 hours.
Explain function.The mathematics curriculum involves examining numbers, the equation the environment we live in, structures, and both actual and hypothetical locations. A function is a variable representation of the relationship between the quantities of intake and the corresponding outputs for each. Simply explained, a function is a collection of inputs that, when combined, provide unique outputs for each input.
Here,
Given :
mass of a population of duckweed is 500g
=> function m(t)= 500x³^t/45
So,
=> t = 45 hours
Since it is given that the mass of the population of the duckweed triples every 45 hours
it is clear that the time taken for the duckweed to grow a mass triple the original size will be 45 hours .
Therefore , the solution of the given problem of function comes out to be the duckweed to grow a mass triple the original size will be 45 hours.
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PLEASE HELP WITH THIS QUESTION, ILL MARK BRAINLIEST
Answer:
Step-by-step explanation:
35-original drill set price
25% or .25-the additional price
markup in decimal form- 0.25
markup in percent form- 25%
Equation-35 + 25% or 0.25
35 + 25% = 43.75
5. Oshaunda buys a car that costs $21,000. It depreciates at 8.2% per year. a. Write an equation for the value of the car. V=21,000(1-0.082) V-21,000(0.918) B. Oshaunda tries to sell the car 4 years later. What is the car worth when it is 4 years old? Hint: Use your formula for part (a), and plug in t = 4. Use GEMA to finish the math.
Answer:
a.
\(f(t) = 21000( {.918}^{t} )\)
b.
\(f(4) = 21000( {.918}^{4}) = 14913.86\)
45% of what number is 90?
I believe the answer is 200.
At a movie theater, all tickets are sold for $6.50 each. Write an algebraic expression for the total sales in dollars for n tickets.
The total sales in dollars for n tickets is 6.50n if all tickets are sold for $6.50 each.
What is an expression?It is defined as the combination of constants and variables with mathematical operators.
It is given that:
At a movie theater, all tickets are sold for $6.50 each.
Let n be the total number of tickets sold.
Each ticket cost = $6.50
Total ticket cost = $6.50n
Or
The total sales in dollars for n tickets = 6.50n
The above expression is a linear expression in one variable and the variable is n.
Thus, the total sales in dollars for n tickets is 6.50n if all tickets are sold for $6.50 each.
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What is the length of BC?
Answer:
2.1
Step-by-step explanation:
This involves trigonometry. Since we need to find the value of a, we need to find a trig equation with a as the numerator. Luckily, we have one, tan. So, tan(20) is equal to a/6, right. So, using a calculator, tan(20) is approximately equal to 0.363. This times 6 should equal a. This is approximately around 2.1. Thus our answer is 2.1
find the weighted average of the numbers 1 and 6, with a weight of 2/3 on the first number and 1/3 on the second number.
a. 3.5
b. 3.3
c. 2.7
d. 2.4
The weighted average of the numbers 1 and 6, with a weight of 2/3 on the first number and 1/3 on the second number is 3.5. The correct option is A.
We know that the formula to calculate the weighted average is: weighted\ average=\frac{w_1x_1+w_2x_2+...+w_nx_n}{w_1+w_2+...+w_n} Where, $x_1,x_2,..x_n$ are the values, and $w_1,w_2,...,w_n$ are the weights. To find the weighted average of the numbers 1 and 6, with a weight of 2/3 on the first number and 1/3 on the second number, we substitute the values in the above formula as follows.
Weighted\ average=\frac{\frac{2}{3}\times 1+\frac{1}{3}\times 6}{\frac{2}{3}+\frac{1}{3}}\implies weighted\ average=\frac{\frac{2}{3}+2}{1}\implies weighted\ average=\frac{8}{3}\implies weighted\ average=2.67 approx 3.5 Therefore, the weighted average of the numbers 1 and 6, with a weight of 2/3 on the first number and 1/3 on the second number is 3.5.
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CORRECT ANSWER WITH **STEPS** GETS BRAINLIEST
for the following questions, determine what values of x makes the rational expression equal to zero.
1. x+6 / x-4
2. (x+4)(x-2) / (x+6)
3. 2x+10 / 3x-12
thanks.
Answer:
see explanation
Step-by-step explanation:
if the denominator of a rational expression is zero then the expression will be undefined.
the numerator is the part of the rational expression that makes it zero.
solve the numerators in each to find values of x
1
\(\frac{x+6}{x-4}\)
x + 6 = 0 ( subtract 6 from both sides )
x = - 6 ← value that makes expression equal to zero
2
\(\frac{(x+4)(x-2)}{x+6}\)
(x + 4)(x - 2) = 0
equate each factor to zero and solve for x
x + 4 = 0 ⇒ x = - 4
x - 2 = 0 ⇒ x = 2
x = - 4 and x = 2 make the expression equal to zero
3
\(\frac{2x+10}{3x-12}\)
2x + 10 = 0 ( subtract 10 from both sides )
2x = - 10 ( divide both sides by 2 )
x = - 5 ← value that makes expression equal to zero
Answer:
1) x = -6
2) x = -4 and x = 2
3) x = -5
Step-by-step explanation:
A rational expression is undefined when the denominator equals zero.
A rational expression equals zero when the numerator equals zero.
Question 1Given rational expression:
\(\dfrac{x+6}{x-4}\)
Set the numerator to zero and solve for x:
\(\implies x+6=0\)
\(\implies x=-6\)
Question 2Given rational expression:
\(\dfrac{(x+4)(x-2)}{x+6}\)
Set the numerator to zero:
\(\implies (x+4)(x-2)=0\)
Apply the zero-product property and solve for x:
\(\implies x+4=0 \implies x=-4\)
\(\implies x-2=0 \implies x=2\)
Question 3Given rational expression:
\(\dfrac{2x+10}{3x-12}\)
Factor the numerator and denominator:
\(\dfrac{2(x+5)}{3(x-4)}\)
Set the numerator to zero and solve for x:
\(\implies 2(x+5)=0\)
\(\implies x+5=0\)
\(\implies x=-5\)
Formulate and solve the following linear program: You are trying to create a budget to optimize the use of a portion of your disposable income. You have a maximum of $1,500 per month to be allocated to food, shelter, and entertainment. The amount spent on food and shelter combined must not exceed $1,100. The amount spent on shelter alone must not exceed $800. Entertainment cannot exceed $400 per month. Each dollar spent on food has a satisfaction value of 2, each dollar spent on shelter has a satisfaction value of 3, and each dollar spent on entertainment has a satisfaction value of 5. 1. Write the Objective Function and Constraints for this problem. 2. Assuming a linear relationship, use the Excel Solver to determine the optimal allocation of your funds. 3. Report the maximum value of the Objective function.
1. Objective Function and Constraints:
Maximize 2x1 + 3x2 + 5x3 subject to x1 + x2 + x3 ≤ 1500, x1 + x2 ≤ 1100, x2 ≤ 800, x3 ≤ 400.
2. Using Excel Solver, find the optimal allocation of funds.
3. The maximum value of the objective function is reported by Excel Solver.
We have,
Objective Function and Constraints:
Let:
x1 = amount spent on food
x2 = amount spent on shelter
x3 = amount spent on entertainment
Objective Function:
Maximize: 2x1 + 3x2 + 5x3 (since each dollar spent on food has a satisfaction value of 2, each dollar spent on shelter has a satisfaction value of 3, and each dollar spent on entertainment has a satisfaction value of 5)
Constraints:
Subject to:
x1 + x2 + x3 ≤ $1,500 (maximum disposable income)
x1 + x2 ≤ $1,100 (amount spent on food and shelter combined must not exceed $1,100)
x2 ≤ $800 (amount spent on shelter alone must not exceed $800)
x3 ≤ $400 (entertainment cannot exceed $400)
Using Excel Solver:
In Excel, set up a spreadsheet with the following columns:
Column A: Variable names (x1, x2, x3)
Column B: Objective function coefficients (2, 3, 5)
Column C: Constraints coefficients (1, 1, 1) for the first constraint (maximum disposable income)
Column D: Constraints coefficients (1, 1, 0) for the second constraint (amount spent on food and shelter combined)
Column E: Constraints coefficients (0, 1, 0) for the third constraint (amount spent on shelter alone)
Column F: Constraints coefficients (0, 0, 1) for the fourth constraint (entertainment limit)
Column G: Right-hand side values ($1,500, $1,100, $800, $400)
Apply the Excel Solver tool with the objective function and constraints to find the optimal allocation of funds.
Once the Excel Solver completes, it will report the maximum value of the objective function, which represents the optimal satisfaction value achieved within the given budget constraints.
Thus,
Objective Function and Constraints: Maximize 2x1 + 3x2 + 5x3 subject to x1 + x2 + x3 ≤ 1500, x1 + x2 ≤ 1100, x2 ≤ 800, x3 ≤ 400.
Using Excel Solver, find the optimal allocation of funds.
The maximum value of the objective function is reported by Excel Solver.
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combine terms/simolify
Answer:
\(\dfrac{2m -1}{5}\)
Step-by-step explanation:
Since we have common denominators inside the parentheses, we can combine the denominators. Then, we get the following expression:
\(2\huge\text{(}\dfrac{1}{5} m - \dfrac{2}{5} \huge\text{)} + \dfrac{3}{5}\)
\(2\huge\text{(}\dfrac{m - 2}{5} \huge\text{)} + \dfrac{3}{5}\)
Now, we can multiply the expression inside the parentheses by 2.
\(\huge\text{(}\dfrac{2m - 4}{5} \huge\text{)} + \dfrac{3}{5}\)
Since the expression inside the parentheses cannot be simplified further, we can open the parentheses and simplify the expression.
\(\dfrac{2m - 4}{5} + \dfrac{3}{5}\)
We can combine the denominators as the denominators are the same.
\(\dfrac{2m - 4 + 3}{5}\)
Finally, we can simplify -4 + 3.
\(\dfrac{2m -1}{5}\)
Therefore, the simplified expression is (2m - 1)/5.
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Suppose that you randomly selected 22 adults. Assume 14% of the population smoke. Round all answers to 2 decimal places. a) Using the Range Rule of Thumb, what is the minimum number of usual smokers we can expect to get out of 22 adults?
Thus, minimum of 3 usual smokers out of 22 adults is found when using the Range Rule of Thumb.
Using the Range Rule of Thumb, we can estimate the minimum number of usual smokers in a sample of 22 adults by considering the expected proportion of smokers in the population and applying it to the sample size.
According to this rule, the range of a distribution can be approximated as six times the standard deviation.
To estimate the minimum number of usual smokers we can expect to get out of 22 adults, we first need to find the standard deviation.
Given that 14% of the population smokes, we can express this proportion as a decimal: 0.14.
To determine the expected number of smokers in the sample, we simply multiply the proportion by the sample size: 0.14 * 22 = 3.08.
Since we cannot have a fraction of a person, we round the result to the nearest whole number.
In this case, we can expect a minimum of 3 usual smokers out of 22 adults when using the Range Rule of Thumb.
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A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second.What is the velocity of the top of the ladder when the base is given below?ALREADY KNOWO 7 feet away from the wall= -7/12O 15 feet away from the wall=-3/2O 20 feet away from the wall=-8/3
The velocity of the top of the ladder is 20.62 feet per second.
We can use the Pythagorean theorem to relate the distance between the wall and the base of the ladder to the height of the ladder. Let h be the height of the ladder, then we have:
h² + 7² = 25²
h² = 576
h = 24 feet
We can then use the chain rule to find the velocity of the top of the ladder. Let v be the velocity of the base of the ladder, then we have:
h² + (dx/dt)² = 25²
2h (dh/dt) + 2(dx/dt)(d²x/dt²) = 0
Simplifying and plugging in h = 24 and dx/dt = -2, we get:
(24)(dh/dt) - 2(d²x/dt²) = 0
Solving for (d²x/dt²), we get:
(d²x/dt²) = (12)(dh/dt)
We can find (dh/dt) using the Pythagorean theorem and the fact that the ladder is sliding down the wall at a rate of 2 feet per second:
h² + (dx/dt)² = 25²
2h(dh/dt) + 2(dx/dt)(d²x/dt²) = 0
Substituting h = 24, dx/dt = -2, and solving for (dh/dt), we get:
(dh/dt) = -15/8
Finally, we can find (d²x/dt²) by plugging in (dh/dt) and solving:
(d²x/dt²) = (12)(dh/dt) = (12)(-15/8) = -45/2
Therefore, the velocity of the top of the ladder is 20.62 feet per second.
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Pls help Ive been here since nine this morning...
f(x)=4.5x^2-3x+2
fine the horizontal tangent line
Answer:
x = 13
Step-by-step explanation:
Given: f ( x ) = 4.5 x 2 − 3 x + 2 To determine the critical points, we must first calculate the first derivative of the function.
Differentiate the given function with respect to x using the power rule of differentiation, d d x x n = n x n − 1.
f ′ (x) = d (4.5 x 2 − 3 x + 2)
______
d x
Apply sum rule: d d x (f(x)) + g (x) = d d x f (x) + d d x g (x) } f ′ ( x) = d d x (4.5 x^2) + d d x (−3 x) + d d x (x) f ′ (x) = 9 x − 3
To determine the critical points, set f ′ (x) = 0 . 9 x − 3 = 0 9 x = 3 {∴ x = 13}
Therefore, the tangent line to f(x) is horizontal at the point x = 13
Hope this helps, have a nice day/night! :D
Suppose you have an outdoor pool measuring 25 ft by 10ft . You want to add a cement walkway around the pool. If the walkway will be 1 ft thick and you have 304 ft³ of cement, how wide should the walkway be?
The area covered by the pool and the cement walkway is 304 square feet. The width of the walkway would be 5 feet
What is the area of the rectangle?The area of the rectangle is the product of the length and width of a given rectangle.
The area of the rectangle = length × Width
Let x be represent the width of the walkway.
The pool measures 25 ft by 10ft . If the walkway must have a uniform width around the entire pool, then the total length of the pool and the walkway = 25+ x + x = 25 + 2x
The total width of the pool and the walkway = 10 + x + x = 10 + 2x
The area covered by the pool and the cement walkway is 304 square feet. This means that;
(25 + 2x)(10 + 2x) = 304
250 + 50x + 20x + 4x^2 = 304
4x^2 + 70x + 250 - 304 = 0
4x^2 + 70x - 54 = 0
x(x + 20) - 5(x + 20) = 0
(x - 5)(x + 20) = 0
x = 5 or x = - 20
Thus The width cannot be negative.
Therefore, the width of the walkway is 5 feet.
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The editor of a textbook publishing company is deciding whether to publish a proposed textbook. Information on previous textbooks published show that 20 %20% are huge successes, 30 %30% are modest successes, 30 %30% break even, and 20 %20% are losers. Before a decision is made, the book will be reviewed. In the past, 99 %99% of the huge successes received favorable reviews, 60 %60% of the moderate successes received favorable reviews, 40 %40% of the break-even books received favorable reviews, and 30 %30% of the losers received favorable reviews. If the textbook receives a favorable review, what is the probability that it will be huge success?
Answer:
\(Probability = 0.198\)
Step-by-step explanation:
Given
Publish
\(Huge\ Success = 20\%\)
\(Modest\ Success = 30\%\)
\(Break\ Even = 30\%\)
\(Losers = 20\%\)
Favorable Reviews:
\(Huge\ Success = 99\%\)
\(Modest\ Success = 60\%\)
\(Break\ Even = 40\%\)
\(Losers = 30\%\)
Required
Determine the probability that a textbook is huge success and favorable
To do this, we simply multiply the probability of a textbook being huge success and being favorably reviewed. as follows;
\(Probability = 20\% * 99\%\)
\(Probability = 0.198\)
At a bank, you can convert pounds into Swiss francs at a rate of
£1 = 1.32 Swiss francs.
The bank charges £3 per transaction, which is deducted from the amount
to be exchanged.
If you exchanged £140 at this bank, how many Swiss francs would you
receive?
Answer:Let's denote the amount of Swiss francs as x. The conversion rate is £1 = 1.32 Swiss francs, so x = 1.32 pounds.
The bank charges £3 per transaction, so the amount of pounds after deducting the charge is 140 - 3 = 137 pounds.
The amount of Swiss francs is 1.32 * 137 = 180.44 francs.
So you would receive 180.44 Swiss francs if you exchanged £140 at this bank.
Step-by-step explanation:
Answer:
You would receive 106.0606 Swiss francs.
The conversion rate is 1.32 Swiss francs to 1 pound, so you would need to
exchange a total of 140 pounds in order to receive 106.0606
Swiss francs. But then, you would have to pay the £3 transaction
fee...which would leave you with only 103.0606 Swiss francs.
find mx, my, and (x, y) for the laminas of uniform density bounded by the graphs of the equations. y = x 3, y = 1 4 x 3
The value of \(M_x\) and \(M_y\) is 1083 and 484 respectively.
Also, the value of (x, y) is (24.2, 54.56).
We have,
y= x³ at y= 1 and x= 3
Then, we can write
Area =\(\int\limits^{3}_{1} {x^3} \, dx\)
= [x⁴/4]\(|_{1}^3\)
= 1/4 [ 81 - 1]
= 1/4 [80]
= 80/4
= 20
Now, X= 1/ A\(\int\limits^a_b {x(f(x) - g(x))} \, dx\)
= 1/20 \(\int\limits^3_1\) x(x³ - 0) dx
= 1/20 \(\int\limits^3_1\)x⁴ dx
= 1/20 [x⁵/5]\(|_1^3\)
= 1/100 [ 243 - 1]
= 1/100 [ 242]
= 24.2
Similarly, Y= 1/ A \(\int\limits^a_b 1/2{x(f(x)^2 - g(x)^2)} \, dx\)
= 1/40\(\int\limits^3_1\) (x⁶ - 0) dx
= 1/40 [x⁷/7]_1^3
= 1/40 [2187 - 1]
= 54.65
Now, M = ρ A = 20
So, y = Mx/M Mx
= 54.65
and, My= 484
Thus, the value of \(M_x\) and \(M_y\) is 1083 and 484 respectively.
Also, the value of (x, y) is (24.2, 54.56).
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Evaluate the integral: S1 0 (-x³ - 2x² - x + 3)dx
The integral: S1 0 (-x³ - 2x² - x + 3)dx is -1/12
An integral is a mathematical operation that calculates the area under a curve or the value of a function at a specific point. It is denoted by the symbol ∫ and is used in calculus to find the total amount of change over an interval.
To evaluate the integral:
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx $\)
We can integrate each term of the polynomial separately using the power rule of integration, which states that:
\($ \int x^n dx = \frac{x^{n+1}}{n+1} + C $\)
where C is the constant of integration.
So, we have:
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx = \left[-\frac{x^4}{4} - \frac{2x^3}{3} - \frac{x^2}{2} + 3x\right]_0^1 $\)
Now we can substitute the upper limit of integration (1) into the expression, and then subtract the result of substituting the lower limit of integration (0):
\($ \left[-\frac{1^4}{4} - \frac{2(1^3)}{3} - \frac{1^2}{2} + 3(1)\right] - \left[-\frac{0^4}{4} - \frac{2(0^3)}{3} - \frac{0^2}{2} + 3(0)\right] $\)
Simplifying:
\($ = \left[-\frac{1}{4} - \frac{2}{3} - \frac{1}{2} + 3\right] - \left[0\right] $\)
\($ = -\frac{1}{12} $\)
Therefore,
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx = -\frac{1}{12} $\)
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A speck of dust in an electron microscope is 1.2 * 102 millimeters wide.The image is 5 * 102 times larger than the actual size. How many millimeters wide is the actual speck of dust?
Answer:
6.0×10⁴mm
Step-by-step explanation:
A speck of dust in an electron microscope is 1.2 * 102 millimeters wide.The image is 5 * 102 times larger than the actual size. How many millimeters wide is the actual speck of dust?
Given
Length of microscope = 1.2×10²mm
If the image is 5×10² larger
Width of the image = 5×10²(1.2×10²)
Width of the image = 5×1.2(10⁴)
Width of the image = 6.0×10⁴mm
Plsssss helppppp 100 points
Find the zero of the polynomial
\( {x}^{2} - \frac{3x}{2} - 7\)
We can find the zeros of the given polynomial by setting it equal to zero and solving for x.
\({\texttt{{x}^{2} - \frac{3x}{2} - 7 = 0}}\)
To solve for x, we can use the quadratic formula:
\({\texttt{x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}}}\)
where a, b, and c are the coefficients of the quadratic equation.
In this case, a = 1, b = -3/2, and c = -7. Substituting these values in the quadratic formula, we get:
\({\texttt{x = \frac{-(-3/2) \pm \sqrt{(-3/2)^2-4(1)(-7)}}{2(1)}}}\)
Simplifying the expression inside the square root, we get:
\({\texttt{x = \frac{3/2 \pm \sqrt{9/4+28}}{2}}}\)
\({\texttt{x = \frac{3}{4} \pm \sqrt{\frac{121}{16}}}}\)
\({\texttt{x = \frac{3}{4} \pm \frac{11}{4}}}\)
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Therefore, the zeros of the polynomial are:
\({\texttt{x_1 = \frac{3}{4} + \frac{11}{4} = 3}}\)
\({\texttt{x_2 = \frac{3}{4} - \frac{11}{4} = -\frac{8}{4} = -2}}\)
Hence, the zeros of the polynomial are 3 and -2.
what is the sum to 5.3x10^5 and 3.8x10^4
pls help
Answer:
5.68*10⁵
Step-by-step explanation:
you can factor 10⁴ at the beginning too but I found it easier to explain what happens this way