Answer:
624$
Step-by-step explanation:
For a submarine cable, the range of signalling is governed by the function
f(r) = r^2 ln(1/r)
where 0
Find df/dr.
Answer:
[tex]\frac{df}{dr} = (-r) + log(\frac{1}{r} )( 2 r)[/tex]
Step-by-step explanation:
Explanation
Given function f(r) = r² log r ....(i)
Apply derivatives formula
[tex]\frac{d}{dx} UV = U^{l} V + V^{l} U[/tex]
[tex]\frac{d}{dx}x^{n} = nx^{n-1}[/tex]
[tex]\frac{d}{dx}log x = \frac{1}{x}[/tex]
Differentiating equation (i) with respective to 'r' , we get
[tex]\frac{df}{dr} = r^{2} (\frac{1}{\frac{1}{r} } )\frac{d}{dr} (\frac{1}{r } )+ log(\frac{1}{r} ) 2 r[/tex]
[tex]\frac{df}{dr} = r^{2} (\frac{1}{\frac{1}{r} } )(\frac{-1}{r^{2} } )+ log(\frac{1}{r} ) 2 r[/tex]
Final answer:-
[tex]\frac{df}{dr} = (-r) + log(\frac{1}{r} )( 2 r)[/tex]
Select the correct answer.
Which equation is equivalent to the given equation?
-4(x-5)+8x=9x-3
Answer:
b, its the logical answer
Step-by-step explanation:
The value of the expression -4(x-5)+8x=9x-3 will be -5x = -23 The correct option is D.
What is an expression?
Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given expression is -4(x-5)+8x=9x-3. The solution to the expression is given below:-
-4(x-5)+8x=9x-3
-4x + 20 + 8x= 9x - 3
4x - 9x = -20 - 3
-5x = -23
Therefore, the value of the expression -4(x-5)+8x=9x-3 will be -5x = -23 The correct option is D.
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please help asap!!!!!
Answer:
angle RQS
Step-by-step explanation:
Behind you there is a sneeze. You don't know it at the time, but this begins a chain reaction of flu that ripples through the school
It starts with only 20 students but the number infected grows every day at a rate of 10% How many people are infected at day 24.
Answer:
how bad do u need this answer 1 through 10
From the figure and statement provided, select the proper TO PROVE Statement.
If two parallel planes are cut by a third plane, the lines of intersection are parallel.
MN= 1AB
AB- BC= AC
M is parallel to
AB= BC
a is parallel to B
Answer: a is equal to b
Step-by-step explanation:
Answer:
a is parallel to b
Step-by-step explanation:
Rick purchases guitars wholesale for 60$ and then marks them up 150% before selling them online. How much doea Rick sell his guitars for?Real Answers Only
Answer:
Rick sells each guitar for 90$
mang pedro has 20 kilogram of rice.he will repack it in 1/2 kilograms per bag.how many bags will he need?
Answer:
20,since each kilo of rice fills two bags so he i'll have 40 bags.
The price of a pair of shoes increases from $55 to $72. What is the percent increase to the nearest percent?
The percent increase is
%.
Answer: 55, 720
This is the answer. No doubt about it
Big burgers restaurant just got a shipment of ground beef that was 384 oz they make one pound burgers how many burgers can they make with the shipment that they received
Enter the sum of numbers as a product of their GCF.
Print
45 +90
The sum of the numbers as a product of their GCF is
Answer:
4, 7 ,2
Step-by-step explanation:
How can you rewrite -8 -− 10 as an addition problem?
A:-8- -10
B -8+10
C-8+18
D-8+ -18
Answer:
B. -8+10
Step-by-step explanation: keep the -8 change - sign to +sign then change -10 to 10 .
Hope it helps :)
josè and nancy take care of animals when the owners are away. josè charges $15 plus $2 per animal. nancy charges $5 plus $3 per animal. for how many animals do they charge the same amount?
get it right i will give you 100 points
Hey there! I'm happy to help!
Here's José's equation.
J=2a+15
And here is Nancy's.
N=3a+5
We want to find the number of animals where they are the same amount, or where J=N. We can write these equations as equal and solve for a to find the answer!
2a+15=3a+5
Subtract 15 from both sides.
2a=3a-10
Subtract 3a from both sides.
-a=-10
Divide both sides by -1.
a=10
Therefore, José and Nancy charge the same amount for 10 animals.
Have a wonderful day! :D
PLS HELP WILL GIVE BRAINLIEST ANSWER
Answer:
8
Step-by-step explanation:
2(20-8x)=5x-2
40-16x=5x-2
42=21x
x=2
HK=5x-2 = 5(2)-2 = 10-2 = 8
Which statements are true? Select MORE THAN ONE correct answer.
The absolute value of −9 is positive.
Since −9 is 9 units to the left of 0, ∣∣−9∣∣=−9 .
−9 is farther to the right on the number line than −10 , so ∣∣−9∣∣>|−10| .
The absolute value of −9 is equal to the absolute value of 9.
Answer:
A and D.
Step-by-step explanation:
what is the volume of the figure?
Answer:
944 cubic feet
Step-by-step explanation:
You need to take the area of the figure separately.
[tex]8*10*5=400[/tex]
[tex]17*8*4=544[/tex]
400 + 544 =944
What is the probability that a customer ordered a cold drink given that he or she ordered a large?
Answer:
19
Step-by-step explanation:
The probability that a customer ordered a cold drink given that he or she ordered a large is 32%.
What is probability?It is defined as the ratio of the number of favorable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
P(Small | Cold) = n(Small and Cold)/n(Cold)
From the table:
P(Small | Cold) = 8/(8 + 12 + 5)
P(Small | Cold) = 0.32
or
P(Small | Cold) = 32%
Thus, the probability that a customer ordered a cold drink given that he or she ordered a large is 32%.
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3 1/4 x 6 1/2 x 2=? I need help please!!
Answer:
42.25
Step-by-step explanation:
Answer:
[tex]\frac{169}{4}[/tex] or 42.25
Step-by-step explanation:
If you turn the fractions into decimals they become easier to multiply.
1) 3.25 x 6.50 = 21.25
2) 21.25 x 2 = 42.25
here is the question and again if you were on the other question and u get it right then i will give brainilst on both
Answer:
[tex]3x^3-3y-3[/tex]
Step-by-step explanation:
[tex]3-3+x^{3}+6x^{3}-3y-3-4x^{3}=3x^3-3y-3[/tex]
These are so annoying
Answer:
a=4
b=6
perimiter=38
Step-by-step explanation:
you take the side lengths by it and you can subtract and stuff then you add them all up to find the perimeter
Answer:
3-9=6 and 6-10=4
Step-by-step explanation
part of b is cut by 3 as u can see above and 9 is at the bottom on which the part is cut, as for the other one 10 is the main line and is cut by 6. so u just have minus the main line aka the long line by a parallel line next to it
algebraic expression.
23 less than a number
plz help
Answer:
n-23
Step-by-step explanation:
hope that helps
The length of the rectangle is three meters less than twice the width. The perimeter is 36meters. What’s the demensions of the rectangle
Answer:
L= 11m
W= 7m
Step-by-step explanation:
Step one:
given data
Let the width W= x
Length = (2x-3)
P= 36 m
Required
The perimeter
P= 2L+2W
36= 2(2x-3)+ 2x
36= 4x-6+2x
collect like terms
36+6= 6x
42= 6x
divide both side by 6
x= 7
the width is 7 m
the length = 2x-3= 2*7-3= 14-3= 11 m
Help pleaseeeeeee I’m so lost
Answer:
yes no no yes
Step-by-step explanation:
An isosceles triangle has two sides of length n where n is an integer greater than 1. What is the smallest possible integer length of the third side?(1 point)
⌊n/2⌋+1
n−1
1
0
Answer:
1
Step-by-step explanation:
The answer is 1 because of the triangle inequality theorem. In order for the shape to be a triangle, two of the sides need to be smaller than one. The two sides we know of is n, n is equal to an integer greater than 1. So, in order for the triangle to be a triangle, the third side has to be at least 1. I also had the same question on my assignment.
A dragon lived in a cave.
The dragon doubled in size every day.
After 20 days the dragon filled the cave.
After how many days did the dragon half-fill the cave?
Answer: After 19 days, the dragon filled half of the cave.
Step-by-step explanation:
The dragon doubled in size every day and after 20 days he filled the cave.
So, one day before, the dragon occupied half of the cave.
20 - 1 = 19 [days]
After 19 days did the dragon half-fill the cave.
The dragon doubles in size every day, and after 20 days, it completely fills the cave.
To find out when the dragon half-filled the cave, we need to determine how many days it took for the dragon to reach half of the cave's capacity.
we know that,
On the 20th day, the dragon filled the entire cave.
and, The dragon doubled in size every day.
so, we have,
On the 19th day, the dragon's size would have been half of what it was on the 20th day.
On the 18th day, the dragon's size would have been half of what it was on the 19th day.
And so on...
We can see that every day before the 20th day, the dragon's size was halved.
So, on the 19th day, the dragon's size was half of the size it was on the 20th day.
Therefore, on the 19th day, the dragon half-filled the cave, and on the 20th day, it filled the entire cave.
Hence, After 19 days did the dragon half-fill the cave.
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-2(7-15)
What is the value of
?
4
O 4
0 -2
O 2
O 4
Identify the constant of Proportionality Write an equation to relate weight, w, to the price, p.
Answer:
m = .45
p = .45w
______
.45 = 9/20
Explanation:
m is the rate of change equal to the price over the weight or p/w.
Because this relationship is proportional, each weight divided by its corresponding price must equal the same fraction because it is constant.
We can prove this by dividing each price by its weight to find this proportion.
1.35/3 = 2.7/6 = 27/60 = 9/20 = 0.45
1.71/3.8 = 171/380 = 9/20 = 0.45
2.34/5.2 = 234/520 = 117/260 = 9/20 = 0.45.
Since equal the same value, this means that 9/20 or .45 is our proportion.
in terms of p = mw
p/w = 9/20.
p = mw → p/w = m → m = p/w = .45 .
Thus, p = .45w,
so m = .45.
Which means that for every .45 or 9/20 w or weight, there is a price of $1.
Consider the functions f(x) = (4/5)x and g(x) = (4/5)x + 6. What are the ranges of the two functions?
f(x): {yly >____}
g(x): {yly >____}
Answer:
0
6
Step-by-step explanation:
<3
The ranges are:
f(x): {y | y ≤ infinity}
g(x): {y | y ≤ infinity}
What is a function?A relation between a collection of inputs and outputs is known as a function. A function is a connection between inputs in which each input is connected to precisely one output. Each function has a range, co-domain, and domain.
For the function f(x) = (4/5)x, any input value of x will be multiplied by 4/5 and produce a corresponding output value y.
Since the fraction 4/5 is less than 1, the output values of f(x) will always be smaller than the input values of x.
Therefore, the range of f(x) will be all real numbers less than or equal to the greatest possible output value.
The greatest possible output value will occur when x is the greatest possible input value, which is infinity. So, the range of f(x) is:
f(x): {y | y ≤ infinity}
For the function g(x) = (4/5)x + 6, any input value of x will be multiplied by 4/5, then 6 will be added to the result to produce a corresponding output value y.
The fraction 4/5 is less than 1, so the output values of g(x) will always be less than the input values of x plus 6.
Therefore, the range of g(x) will be all real numbers less than or equal to the greatest possible output value, which occurs when x is infinity. So, the range of g(x) is:
g(x): {y | y ≤ infinity}
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Work out 5/7
of 100.
Give your answer correct to the nearest whole number.
Answer: 71
Step-by-step explanation: 100x (5\7) = 71.4
Answer:
71.5
Step-by-step explanation:
5/7 of 100=(5×100)÷7=500÷7=71.5
math question 18 points >:)!
a line has slope -3 and the y intercept is 7. what is the slope intercept form of the line?
Answer:
y = -3x + 7
Step-by-step explanation:
[tex]y = mx + b[/tex]
m = slope
b = y intercept
eq:
[tex]y = - 3x + 7[/tex]