Answers
a) [tex]\frac{dy}{dx} = \frac{1-3lnx}{x^4}[/tex]
b) [tex]\frac{dy}{dx} = \frac{-2}{3\sqrt[3]{1-x} }[/tex]
Explanation:
a) [tex]y=\frac{lnx}{x^3}[/tex]
[tex]y = \frac{lnx}{\sqrt[3]{x} }[/tex]
[tex]y = lnx. x^-3[/tex]
Differentiating the above equation in terms of x
[tex]\frac{dy}{dx} = \frac{1}{x} \times x^-3 - 3lnx\times x^-^4\\\frac{dy}{dx} = \frac{1}{x^4} - \frac{3lnx}{x^4} \\\frac{dy}{dx} = \frac{1-3lnx}{x^4} \\[/tex]
b) [tex]y = \sqrt[3]{1-x^{2} }[/tex]
Differentiating the above equation in terms of x
[tex]y = \sqrt[3]{(1-x)^{2} } \\\frac{dy}{dx} = (1-x)^\frac{2}{3} \\\frac{dy}{dx} = \frac{2}{3}\times (1-x)^\frac{-1}{3} \times -1\\\frac{dy}{dx} = \frac{-2}{3\sqrt[3]{1-x} }[/tex]
Thus,
a) [tex]\frac{dy}{dx} = \frac{1-3lnx}{x^4}[/tex]
b) [tex]\frac{dy}{dx} = \frac{-2}{3\sqrt[3]{1-x} }[/tex]
Related Questions
Type the correct answer in each box. Spell all words correctly, and use numerals instead of words for numbers. If necessary, use / for the fraction bar(s).
What is the mean of the given distribution, and which type of skew does it exhibit?
{4.5, 3, 1, 2, 4, 3, 6, 4.5, 4, 5, 2, 1, 3, 4, 3, 2}
The mean of the distribution is
, and it exhibits a
skew.
Answers
Mean = 3.25
Solution:
Step 1 : Given data:
4.5, 3, 1, 2, 4, 3, 6, 4.5, 4, 5, 2, 1, 3, 4, 3, 2
Step 2:
Sum of the numbers
= 4.5 + 3 + 1 + 2 + 4 + 3 + 6 + 4.5 + 4 + 5 + 2 + 1 + 3 + 4 + 3 + 2
= 52
Sum of the numbers = 52
Number of terms = 16
Step 3:
[tex]$\text{Mean}=\frac{\text{Sum of the numbers}}{\text{Number of terms}}[/tex]
[tex]$=\frac{52}{16}[/tex]
= 3.25
Mean = 3.25
Mean of the distribution is 3.25.
Answer: Mean= 3.25 with a POSITIVE skew
Step-by-step explanation:
edmentum
what is the value of the expression 2(3/4 - 1) + 0.35
Answers
Answer:
-.15
Step-by-step explanation:
you first do whats in the parantheses (3/4 - 1) which equals -.25, then multiply by 2 which gives you -.5, now add .35 and your total is -.15
Answer:
0.85
Step-by-step explanation:
2(3/4-1)+0.35
=(1.5-1)+0.35
=0.5+0.35
=0.85
what is maximum and minimum of f(x)=7x^2
Answers
Answer:
Minimum value is 0
Maximum value is undefined.
Step-by-step explanation:
The given function is [tex]f(x)=7x^2[/tex]
This function is a parabola that has its vertex at the origin.
The coefficient of the quadratic term is 7, which is greater than zero.
This means that, the graph will open up.
The graph will therefore have a minimum value of y=0
The graph of this function does not have a maximum value.
The product of a non-zero rational number and an irrational number can always be
Answers
Answer:
The product of a non-zero rational number and an irrational number will always be an irrational number.
Step-by-step explanation:
Here's a proof by contradiction for this claim.
Consider an irrational number [tex]x[/tex]. Assume by contradiction that this claim isn't true. In other words, assume that there exist a non-zero rational number [tex]y[/tex] such that [tex]x \cdot y[/tex] is a rational number.
By the definition of rational numbers, a number is a rational number if and only if it can be written as the quotient of two integers.
[tex]y[/tex] is a rational number ⇔ there exist two integers [tex]a[/tex] and [tex]b[/tex] such that [tex]\displaystyle y = \frac{a}{b}[/tex].[tex]x \cdot y[/tex] is a rational number ⇔ there exist two (other) integers [tex]c[/tex] and [tex]d[/tex] such that [tex]\displaystyle x \cdot y = \frac{c}{d}[/tex].Divide [tex]y[/tex] from both sides of the equation:
[tex]\displaystyle \frac{x\cdot y}{y} = \left.\frac{c}{d}\right/y[/tex].
The left-hand side of this equation is now equal to [tex]x[/tex].
Since [tex]\displaystyle y = \frac{a}{b}[/tex] by assumption, the [tex]y[/tex] on the right-hand side of this equation can be replaced with [tex]\displaystyle \frac{a}{b}[/tex]. Hence, the right-hand side of this equation would become
[tex]\displaystyle \frac{x\cdot y}{y} = \left.\frac{c}{d}\right/\frac{a}{b} = \frac{c}{d}\cdot \left(\frac{b}{a}\right) = \frac{b \cdot c}{a \cdot d}[/tex].
Combine the two sides of the equation to obtain:
[tex]x = \displaystyle \frac{b \cdot c}{a \cdot d}[/tex].
Since [tex]b[/tex] and [tex]c[/tex] are both integers, their product [tex]b \cdot c[/tex] would also be an integer. Similarly, since [tex]a[/tex] and [tex]d[/tex] are both integers, their product [tex]a \cdot d[/tex] would also be an integer.
In other words, [tex]x[/tex] can now be represented as the quotient of two integers. By the definition of rational numbers,
Hence, the original assumption that this claim isn't true, is not true. That verifies the claim that the product of a non-zero rational number and an irrational number would be an irrational number.
2x exponent 2 times -4
Answers
Answer:
[tex]-16x^2[/tex]
Step-by-step explanation:
[tex](2x)^2 * -4\\=4x^2*-4\\=-16x^2[/tex]
Answer:
0
Step-by-step explanation:
An exponent multiply's that number by that amount of the exponent.
EX : 2^3 where ^ represents exponent
You would write it out like :2*2*2=8
Your problem asks us to multiply the number 2 by itself twice, equaling 4
and 4 subtracted by 4 is zero .
Martha needs 28 strawberries for every 4 smoothies she makes. Complete the table using equivalent ratios.
Answers
answer: 28: 4
21: 3
70: 10
step-by-step explanation:
divide 28 by 4, and of course, do to the bottom what you do to the top. 4 divided by 4 is 1, and 28 divided by 4 is 7.
7: 4.
then, multiply by the number of smoothies.
for 3, it's 21: 3.
for 10, it's 70: 10.
How is b the answer???
Answers
B
Step-by-step explanation:
(1)Area of triangle= 1/2 x height (7cm) x base (8cm)
= 56/2
= 28
(2)Area of circle = (Pi)r^2
= (Pi)4cm^2
= 50.26548....
Since the circle is half divide the above by 2
= 25.132741.....
Round the answer to the nearest hundredth
= 25.13
(1) + (2)
28+25.13= 53.13
Hope this helps! :)
Write the expression in standard form.
(4f-3+2g)-(-4g+2)
Answers
To write the given expression (4f-3+2g)-(-4g+2) in standard form, change the signs of the terms subtracted and combine like terms to simplify to 4f + 6g - 5.
Explanation:To write the expression in standard form, you need to simplify the expression by combining like terms and handling the subtraction of negative numbers properly. Given the expression (4f-3+2g)-(-4g+2), you first remove the parenthesis while changing the signs of the terms inside the parenthesis being subtracted.
The expression -(-4g+2) will become +4g-2 once we apply the rule that subtracting a negative is the same as adding a positive, similarly to the example 2-(-6)=2+6=8.
Now the expression is simplified to 4f - 3 + 2g + 4g - 2. We combine like terms to get 4f + 6g - 5.
The standard form of the given expression is 4f + 6g - 5.
The expression (4f-3+2g)-(-4g+2) can be simplified using the distributive property and combining like terms.
First, distribute the negative sign to the terms inside the parentheses: (-1) * (-4g) = 4g and (-1) * 2 = -2.
The expression becomes (4f-3+2g) + (4g-2).
Next, combine like terms: 4g + 2g = 6g, and -3 - 2 = -5.
The final expression in standard form is 4f + 6g - 5.
Write a number of your choice, using the following clues:
a two digit number
greater than 40
divisible by both 2 and 3
Answers
Answer:
42 and 72
Step-by-step explanation:
HELP NOW PLS what is (x+6)
Answers
x+6 is x+6. It's an expression. Not sure what you need help with.
Answer:
You set the problem =0, so (x+6)=0.
Then, you do the inverse to get x alone. 6-6(cancels out) and 0-6 is -6.Now your equation should look like x=-6 and you’re done.
Step-by-step explanation:
The age of Noelle’s dad is 6 less than 3 times Noelle’s age. The sum of their ages is 74 . Find their ages.
Answers
Answer:
The age of Noelle's dad is 54 years and that of Noelle is 20 years.
Step-by-step explanation:
Let the age of Noelle's dad is x years and that of Noelle is (74 - x) years.
{Since, the sum of their ages is 74}
Now, given that the age of Noelle's dad is 6 less than 3 times Noelle's age.
So, 3(74 - x) - 6 = x
⇒ 4x = 222 - 6 = 216
⇒ x = 54
So, the age of Noelle's dad is 54 years and that of Noelle is (74 - 54) = 20 years. (Answer)
What is the measure of angle x
Enter your answer in the box
Answers
x = 83°
Solution:
The reference image to the answer is given below.
Sum of the adjacent angles in a straight line = 180°
⇒ ∠1 + ∠2 + ∠3 = 180° (Refer image)
⇒ 56° + ∠2 + 41° = 180°
⇒ 56° + 41° + ∠2 = 180°
⇒ 97° + ∠2 = 180°
⇒ ∠2 = 180° – 97°
⇒ ∠2 = 83°
In the given image ∠5 and ∠2 are vertically opposite angles.
Vertical angle theorem:
Vertically opposite angles are equal.
⇒ ∠5 = ∠2
⇒ x = ∠2
⇒ x = 83°
Hence the measure of angle x is 83°.
Rita finds the quotient of 584 divide by 17
to be 33 R23. Explain why her answer
is not correct. Then find the correct answer.
answer.
Answers
Answer:
Rita's answer in incorrect because the remainder that Rita got which is 23 is greater 17 which is the divisor. 17 can still go in 23 1time to have a remainder of 6. Hence Rita's answer is wrong with 34R6 being the correct answer.
Step-by-step explanation:
Quotient is the required answer if 584 is divided by 17
584 will be the dividend and 17 is the divisor.
To calculate 584/17, 17 will go in 58 3times with 7 as remainder. This remainder 7 will combine with 4 to make 74, 17 will also go in 74 4times with remainder of 6.
The final answer by combining the number of times 17 goes in 584 which is 34 with final remainder of 6. This means that;
584/17 = 34 remainder 6 i.e 34R6
This shows that Rita's answer in incorrect because the remainder that Rita got which is 23 is greater 17 which is the divisor. 17 can still go in 23 1time to have a remainder of 6. Hence Rita's answer is wrong with 34R6 being the correct answer.
Mutliply x - 3 and x + 3
Answers
Answer:
Step-by-step explanation:
(x-3)*(x+3)
we begin by expanding and then simplifying
= (x²+3x-3x-9)
= x² - 9
Answer:
x² - 9
Step-by-step explanation:
hello :
(x - 3 ) (x + 3) = x²+3x-3x-9
(x - 3 ) (x + 3) = x² - 9
What is 21 over 4 written as a whole number
Answers
Answer:7
Step-by-step explanation:
Answer:
Technically, since it's an improper fraction, turning it into a whole number is not possible.
Step-by-step explanation:
21/4 as a decimal is 5.25
5.25 as a mixed number would be 5 1/4. Therefore, the closest 21/4 can get to a "whole number" is 5.
In the linear equation y=4x +2, the value “2” represents which of the following?
Answers
Answer:
The y-intercept
Answer:
b
Step-by-step explanation:
I am thinking it would be "b" because y=mx+b so not the multiple choice but whichever one says b
3. If d=rt, where d is distance, ris rate,
and t is time, how long, in hours, will
it take Derron to drive 180 miles at
an average rate of 45 miles per hour?
Answers
Answer:
Step-by-step explanation:
D=rt
180miles = 45mph* times
180miles/45mph =time
Time = 4hours
y= 15/2 when x = -5
Write direct variation that relates x and y
Answers
Answer:
[tex]y=-1.5x[/tex]
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form [tex]k=\frac{y}{x}[/tex] or [tex]y=kx[/tex]
In this problem we have
y=15/2 when x=-5
Find the constant of proportionality k
[tex]k=\frac{y}{x}[/tex]
substitute the given values
[tex]k=\frac{(15/2)}{-5}=-1.5[/tex]
therefore
The linear equation that relates x and y is equal to
[tex]y=-1.5x[/tex]
maria says that dividing 1/4 by 3 is the same as multiplying 1/2 by 1/3 do you agree or disagree
Answers
Answer:No
Step-by-step explanation:
What is the measure of ∠x?
Answers
Therefore set your equation equal to 90 to find angle of x
53+x=90
Subtract 53 from both sides
X= 37 degrees
what is 3 1/3, 2 5/6, and 2 3/4 added in simplest form?
Answers
1) Turn everything into improper fractions: 10/3, 17/6, and 11/4
2) Find LCM of 3, 6, and 4: 12
3) Fix improper fractions to match the new denominator: 40/12, 34/12, and 33/12
4) Add them all up: 40/12+34/12+33/12=107/12=8 11/12
So your final answer is 8 11/12
Hope this helped and please mark as brainliest!
Please help me on this math question please
Answers
Answer:
here is the answer, out of all my experience i'm not too good on these word problems. You should check number two but if you agree than yay.
Step-by-step explanation:
The revenue each season from tickets at the theme part is represented by t(x) = 5x. The cost to pay the employees each season is represented by r(x) = (1.5)x. Examine the graph of the combined function for total profit and estimate the profit after four seasons.
Answers
Answer:
14
Step-by-step explanation:
The revenue earned is represented by t(x)=5x. Since the equation asks for the profit after four seasons you fill in 4 for x and get 20. r(x)=(1.5)x is how much it costs to pay their employees each season so you fill in 4 for x. Now you take revenue earned and subtract it by the cost to pay employees and you get the profit.
5x - 1.5x = Profit
5(4) - 1.5(4) = Profit
20 - 6 = Profit
14 = Profit
Answer:
15
Step-by-step explanation:
20. Math and Science There are 6 pure
spectral colors: red, orange, yellow, green,
blue, and violet. Some animals cannot
see all of these colors. Bees cannot see
orange or red. What fraction of the pure
spectral colors can bees see?
Answers
2/1 frptrhgqhgr4tjtfix jxcfh8u5t8ofszYI7wyt439tfy7efgy5g
Final answer:
Bees can see 4 out of the 6 pure spectral colors, which simplifies to the fraction 2/3 after removing the 2 colors they cannot see, orange and red.
Explanation:
The question involves calculating a fraction, which is a basic mathematical concept. We are told there are 6 pure spectral colors: red, orange, yellow, green, blue, and violet. Bees cannot see orange or red, so we must find out what fraction of the 6 pure spectral colors bees can see. We subtract the 2 colors bees can't see (orange and red) from the total of 6, leaving us with 4 colors they can see which are yellow, green, blue, and violet.
To express this as a fraction, we take the number of colors bees can see (4) and place it over the total number of pure spectral colors (6). Therefore, the fraction of pure spectral colors that bees can see is 4/6. This fraction can be simplified by dividing both the numerator and the denominator by their greatest common divisor, which is 2. Thus, the simplified fraction is 2/3.
Supria and Elle live 21 miles apart. They leave their respective homes at the same time to go for
a jog. They begin running toward each other with the intent of meeting. Supria runs at a
constant rate of 8 miles per hour and Elle runs at a constant rate of 8 miles per hour. A third
friend starts at Supria's house and rides her bike toward Elle's house and rides her bike toward
Elle's house at a constant rate of 10 miles per hour. How far will the bicyclist have ridden when
Supria and Elle finally meet?
Answers
Answer:
[tex]d3=13.125[/tex] [tex]miles[/tex]
Step-by-step explanation:
Given data:
[tex]total[/tex] [tex]distance = 21[/tex] [tex]miles[/tex]
[tex]s1=8[/tex] [tex]miles/hr[/tex]
[tex]s2=8[/tex] [tex]miles/hr[/tex]
[tex]s3=10[/tex] [tex]miles/hr[/tex]
First we have to find out the how much time it takes when Supria and Elle meet.
As we know,
[tex]Displacement=rate*time[/tex]
[tex]d1=s1*t[/tex]
[tex]d2=s2*t[/tex]
[tex]d1+d2=21[/tex]
[tex]8t+8t=21[/tex]
[tex]16t=21[/tex]
[tex]t=21/16[/tex]
Now we can find that how much the third friend had traveled during this time period
[tex]d3=s3*t[/tex]
[tex]d3=10*21/16[/tex]
[tex]d3=13.125[/tex] [tex]miles[/tex]
Farmer Jones raises ducks and cows. He looks out his window and sees 54 animals with a total of 122 feet. If each animal is “normal”, have many of each type of animal does he have
Answers
Answer:
He have 47 ducks and 7 cows.
Step-by-step explanation:
Given:
Farmer Jones raises ducks and cows.
He looks out his window and sees 54 animals with a total of 122 feet.
Now, to find the each type of animal he have.
Let the number of ducks be [tex]x.[/tex]
And the number of cows be [tex]y.[/tex]
So, total number of animals are:
[tex]x+y=54[/tex]
[tex]x=54-y[/tex] ....( 1 )
As, the feet of cows are 4 and ducks are 2.
Now, the total number of feet are:
[tex]2(x)+4(y)=122[/tex]
[tex]2x+4y=122[/tex]
Substituting the value of [tex]x[/tex] from equation (1) we get:
[tex]2(54-y)+4y=122[/tex]
[tex]108-2y+4y=122[/tex]
[tex]108+2y=122[/tex]
Subtracting both sides by 108 we get:
[tex]2y=14[/tex]
Dividing both sides by 2 we get:
[tex]y=7.[/tex]
The number of cows = 7.
Now, to get the number of ducks we substitute the value of [tex]y[/tex] in equation (1):
[tex]x=54-y\\x=54-7\\x=47.[/tex]
The number of ducks = 47.
Therefore, he have 47 ducks and 7 cows.
Volunteers for a political campaign gave out 21/38 of their fliers. They gave out the remaining 612 fliers in another neighborhood. What is the total number of fliers they gave out
Answers
Answer:
The total number of fliers the volunteers gave out is 1,368: 756 in the first neighborhood and 612 in the second.
Step-by-step explanation:
1. Let's review the information provided to us to answer the question correctly:
Amount of fliers the volunteers gave for a political campaign = 21/38
Remaining 612 were given out in another neighborhood
2. What is the total number of fliers they gave out?
x = Total of fliers
21x/38 = Fliers given out in the first neighborhood
612 = Fliers given out in the second neighborhood
Let's solve for x, this way:
x - 21x/38 = 612
38x - 21x = 612 * 38 (38 is the Lowest Common Denominator)
17x = 23,256
x = 23,256/17
x = 1,368
The total number of fliers the volunteers gave out is 1,368: 756 in the first neighborhood and 612 in the second.
Barbara is 142 cm tall. This is 2 cm less than 3 times
her height at birth. Find her height at birth.
Answers
Final answer:
Using an algebraic approach, we found out that if Barbara is 142 cm tall, which is 2 cm less than three times her birth height, then her height at birth was 48 cm.
Explanation:
The question asks us to determine Barbara's height at birth given that she is currently 142 cm tall and that this height is 2 cm less than three times her height at birth. To find her height at birth, we can construct and solve a simple algebraic equation based on this information.
Let h represent Barbara's height at birth. The problem states that:
142 cm = 3h - 2 cm
Adding 2 cm to both sides of the equation, we get:
144 cm = 3h
Dividing both sides of the equation by 3 so we can solve for h, gives us:
h = 144 cm / 3
h = 48 cm
Therefore, Barbara's height at birth was 48 cm.
Li keeps track of the time he spends working out each week. The table shows the number of cardio workouts and the number of weighted workouts for 3 recent weeks. The total time in minutes for weeks 1 and 2 are given. Each cardio workout is the same length of time, and each weighted workout is the same length of time. The system of equations can be used to represent this situation. Use the drop-down menus to complete each statement.
Answers
Answer: I guessed on the second one
Step-by-step explanation:
The problem falls under mathematics, more specifically algebra, using a system of two equations to solve for the timing of the cardio and weighted workouts. The equations can be formed from the provided data and can be solved using substitution or the elimination method.
Explanation:This problem is a system of equations questions in mathematics, specifically in the subset of algebra. To be able to solve this, you need to create two equations from the data provided on the table and then solve for both cardio and weighted workout timings. For instance, if I did 2 cardio workouts and 3 weighted workouts in week 1 for a total of 150 minutes and 3 cardio workouts and 1 weighted workout in week 2 for a total of 160 minutes, you can construct these two equations:
2*cardio + 3*weighted = 150 (Equation for week 1)
3*cardio + weighted = 160 (Equation for week 2)
Next, you solve this system of equations either by substitution or elimination- whatever you're more comfortable with. The results will give you the duration of each cardio and weighted workout.
Learn more about the System of equations here:https://brainly.com/question/35467992
#SPJ11
Which equation represents the line shown in the graph below ? *20 points* I NEED IT ASAP !!!
Answers
Answer:
B
Step-by-step explanation: