PLEASE HELP
3. The function E(v)= 15v^2 / 2 models the
kinetic energy E in joules of an object
with a mass of 15 kilograms, where v is
the velocity of the object in meters per
second. Write the inverse function v(E) to
find the velocity of a 15-kilogram object
with kinetic energy E.
Answers
Answer:
i think it is 15v (E) = √(2E/m)
Step-by-step explanation:
From the question given:
E = ½mv²
E is the kinetic energy
m is the mass of object
v is the velocity.
To find a model v(E) for the velocity of the object, we simply make V the subject of the above equation.
This can be obtained as follow:
E = ½mv²
Cross multiply
mv² = 2E
Divide both side by m
v² = 2E/m
Take the square root of both side
v = √(2E/m)
Therefore, the model v(E) for the velocity of the object is given by:
v (E) = √(2E/m)
The inverse function v(E) to find the velocity of a 15-kilogram object
with kinetic energy E should be [tex]15v (E) = \sqrt (2E/m)[/tex]
Calculation of the inverse relation:Since we know that
[tex]E = 1\div 2mv^2[/tex]
Here,
E is the kinetic energy
m is the mass of object
v is the velocity.
Now we can write like
[tex]mv^2 = 2E[/tex]
So,
[tex]v^2 = 2E/m[/tex]
Now Take the square root of both side
So,
[tex]v = \sqrt (2E/m)\\\\v (E) = \sqrt (2E/m)[/tex]
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Related Questions
Angle measures and segment lengths. Algebra Find the value of each variable.
Answers
Answer:
The value of x is 50
Step-by-step explanation:
A secant is a line that intersects a circle in exactly two points. When two secants intersect outside a circle then the measure of the angle formed between them is one-half the positive difference of the measures of the intercepted arcsIn the given figure
∵ Two secants intersected outside the circle
∵ The measures of the intercepted arcs are 30° and 130°
∵ x is the measure of the angle formed between them
→ By using the fact above
∴ x = [tex]\frac{1}{2}[/tex] (130 - 30)
∴ x = [tex]\frac{1}{2}[/tex] (100)
∴ x = 50
∴ The value of x is 50
please help me solve this question: Graph x < 1
Answers
Answer:
Put an open circle over the 1 to the right of 0. The arrow should point all the way to -5 or the 5 to the left of 0.
Step-by-step explanation:
In order to solve this, we know that x is less than one. That means that we need to circle to be over the 1, since it is the only known number in this inequality.
Since the phrase "less than" means that x cannot be more than 1, we know that in order to find the value of "x", then we need an amount lower than one, therefore, we move to the left.
If the length of a rectangular playground is represented by the expression 2x - 3, and the width is represented by 5x + 9, what expression represents the area of the playground. Leave your answer in standard form. Show all work.
Answers
Answer:
The expression for area of rectangle in standard form is: [tex]10x^2+3x-27[/tex]
Step-by-step explanation:
The area of rectangle is given by:
[tex]Area = Length * Width[/tex]
Here, in the question, we are given length and width of the rectangle
Length = 2x-3
Width = 5x+9
The area of the rectangle will be:
[tex]Area = (2x-3)(5x+9)\\= 2x(5x+9)-3(5x+9)\\= 10x^2+18x-15x-27\\= 10x^2+3x-27[/tex]
Hence,
The expression for area of rectangle in standard form is: [tex]10x^2+3x-27[/tex]
Find n and r 10 points
Answers
Answer:
i think i can see the picture
Step-by-step explanation:
HOW WILL YOU DEAL WITH YOUR NEGATIVE ATTITUDES? ???
Answers
Answer:
I usually try and practice changing my mindset. Just try to look at things from another perspective, and if you can't, try thinking the OPPOSITE of what you thought.
Think homework is hard? Say to yourself, "Homework is easy." and trudge on through. After some time, your mindset *will* improve, and your attitudes will change from negative to positive.
Also, try to go out more often. Doing exercise, socializing, all of which will produce serotonin and will improve your outlook on life and attitude.
Step-by-step explanation:
Thanks, and please give me Brainliest!
The function f(x) is shown on the graph
Answers
Answer:
what I need more information to answer your question what is the question and show me the graph please
Is this a linear pair? Does it share a common side?
Answers
Answer:
Yes, Yes
Step-by-step explanation:
Assume that the wavelengths of photosynthetically active radiations (PAR) are uniformly distributed at integer nanometers in the red spectrum from 675 to 695 nm. What is the mean, ?, and variance, ?2, of the wavelength distribution for this radiation? Round your answers to one decimal place.
mean, ? =
variance, ?2 =
Answers
Answer:
Mean=685
Variance=36.7
Step-by-step explanation:
The mean of uniform discrete distribution can be expressed as the average of the boundaries
mean=( b+a)/2
The variance of uniform discrete distribution can be expressed as the difference of the boundaries decreased by 1 and squared, decreased by 1 and divided by 12.
σ²=[(b-a+1)^2 - 1]/12
We were given the wavelength from from 675 to 695 nm which means
a= 675, b= 695
We can now calculate the mean by using the expresion below
mean=( b+a)/2
Mean=( 675 + 695)/2
=685
The variance can be calculated by using the expression below
σ²=[(b-a+1)^2 - 1]/12
σ²=[(695-675+1)^2 -1]/12
σ²=440/12
σ²=36.7
Therefore, the the mean and variance, of the wavelength distribution for this radiation are 685 and 36.7 respectively
Will mark as brainliest if correct! (#14)
Answers
Answer:
B and D
Step-by-step explanation:
To find the percentage, you divide Martin's correct answers by the total number of questions, then multiply the result by 100.
To find the fraction, it's correct answers/total questions.
Answer:
you should get your answer to be ,B and D
What vertical line (V) and horizontal line (H) intersect at point B?
Answers
Jen paid 26 cents for a mini bag of candy.She bought 4 bags of candy for herself and a friend.How much will she pay for the candy?
Answers
Answer: 1.04 I think
Step-by-step explanation:
Answer:
1.04
Step-by-step explanation:
26x4=104 and I put the decimal point in.
Carmen returned a bicycle to Earl's Bike Shop. The sales receipt showed a total paid price of $\$211.86$, including the $7\%$ sales tax. What was the cost of the bicycle without the sales tax?
Answers
Answer:
$198
Step-by-step explanation:
Given that:
Sales price on the sales receipt (including the sales tax) = $211.86
Sales tax = 7%
To find:
The cost of the bicycle without the sales tax = ?
Solution:
First of all, we will have to let the cost of bicycle without the sales tax.
Let the cost of bicycle without the sales tax = $[tex]x[/tex]
Cost of bicycle without the sales tax and with sales tax is given as equal to $211.86.
Writing the equation as per question statement:
[tex]x+x\times 7\%=\$211.86\\\Rightarrow \dfrac{107}{100}x=\$211.86\\\Rightarrow x=\dfrac{21186}{107}\\\Rightarrow \bold{x = \$198}[/tex]
Therefore, the cost of bicycle without the sales tax = $198
Multiply 1 4/5 * 1 ???
Answers
Answer:
9/5 or 1 4/5
Step-by-step explanation:
You’re welcome :)
Answer:
your answer will come to be 1.8
Ryanne is 14. Her brother’s age is three more than half her age. How old is her brother?
Answers
Answer:
Her brother is 10 years old
Step-by-step explanation:
14 ÷ 2 = 7
7 + 3 = 10
The answer is 10
12.) At a bowling alley, there is a $5.00 fee for renting shoes. It costs $1.25 for each game bowled. If you have $10 have many games can you bowl?
A.7 games
B.4 games
C.2 games
D.5 games
Answers
y-4=-x+7 in standard form.
Answers
Answer:
Step-by-step explanation:
x + y = 11
Find the slope of the graph below.
Answers
Answer:
m=4
Step-by-step explanation:
tgx=4/1
=4
Solve the formula 5x + 2y = 19 for y
Answers
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[tex]5x + 2y = 19[/tex]
Subtract sides 5x
[tex] - 5x + 5x + 2y = - 5x + 19[/tex]
[tex]2y = - 5x + 19[/tex]
Divide sides by 2
[tex] \frac{2y}{2} = \frac{ - 5x + 19}{2} \\ [/tex]
[tex]y = \frac{ - 5x}{2} + \frac{19}{2} \\ [/tex]
[tex]y = - \frac{5}{2} x + \frac{19}{2} \\ [/tex]
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The solution of the equation 5x + 2y = 19 for the value of y is y = (-5 / 2)x + ( 19 / 2).
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 5x + 2y = 19. The value of y will be calculated as:-
5x + 2y = 19
2y = 19 - 5x
y = ( 19 / 2 ) - ( 5x / 2 )
Therefore, the solution of the equation 5x + 2y = 19 for the value of y is y = (-5 / 2)x + ( 19 / 2).
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Jimmy scored 49 goals in soccer this season. Tommy scored 7 times fewer goals. how many goals did Tommy score
Answers
49 -7 = 42
In Oscar's grade, 70 students are enrolled in health and 30 students are not. What
percentage of the students in the school are enrolled in health?
Write your answer using a percent sign (%).
Answers
Answer:
70%
Step-by-step explanation:
Step 1:
70 + 30 = 100 Add
Step 2:
Total of 100 Students
Step 3:
70/100 Divide
Answer:
70%
Hope This Helps :)
Answer:
70% of the students are enrolled in health class.
Step-by-step explanation:
We are given that there are 70 students enrolled in health and that 30 are not. Therefore, we need to determine the total number of students in Oscar's grade.
[tex]70 + 30 = 100[/tex]
Oscar has 100 students in his grade. If 70 of those students are enrolled in health, we can divide those students by the total number of students and convert our fraction to a decimal and then a percentage.
[tex]\displaystyle\frac{70}{100} = \frac{7}{10} = 0.7\\\\0.7 \times 100 = 70\%[/tex]
Therefore, 70% of the students are enrolled in health class.
Brielle’s piggy bank has all nickels and dimes. The total value of the money in her piggy bank is $7.80. If Brielle
has 66 nickels, write and solve a linear equation to find the number of dimes she has.
Answers
66*0.5=3.30
7.80-3.30=4.50
4.50/0.10=45
ANSWER: 45 dimes
the product of 45/87 and --9/10 is
Answers
Answer:
0.4655172413793
Step-by-step explanation:
45/87 ×-9/10 i
405÷870
0.4655172413793
LM has the endpoints l at -5 and m to -9 .to find the point x so that x divideds the directed line segments LM in a 2:3 ratio
Answers
Answer:
The value of point x is 3/5 .
Step-by-step explanation:
Each axis on a graph should be:
labeled
equal
numbered
vertical
Answers
Answer:
labeled is the answer your looking for
Sally made 4 1/2 pounds of trail mix. If she puts 1 1/8 pounds into each bag, how many bags can Sally fill?
Write your answer as a fraction or as a whole or mixed number.
Answers
Answer:
The answer is 4
Step-by-step explanation:
convert bot fractions into a decimal
4 1/2 = 4.5 1 1/8 = 1.125
4.5 divided by 1.125= 4
GIVING OUT BRAINLIST ASAP
The Spanish Club sells hot pretzels as a fundraiser. The pretzels normally sold for $2.00, but near the end of the sale the price was reduced by 25% How much is the price of the pretzel being reduced by? Round your answer to the nearest cent (hundredths place)
Answers
Answer: 1.50
Step-by-step explanation:
Answer
25% of 2.00$ is 50 cents
Step-by-step explanation:
Kelly wants to know the actual value of a house that she wants to buy. What should she do?
A.
ask a home inspector to check the house
B.
arrange for a residential survey
C.
get a real–estate appraisal
Answers
Answer:
Its real estate appraisal
Step-by-step explanation:
For plato users
simplify the following square root √ -1 =
Answers
Answer:
1 .
because sqare root of -1= 1
It is Undefined, as a negative square root does not contain real numbers. Or in other words it doesn’t have anything to simplify to.
2. Soive: (14x - 8) - 2(3x - 6)
a. 8x + 4
b. 20x + 4
19x + 14
d. 8x - 20
Answers
Answer:
A
Step-by-step explanation:
Distribute the -2 into (3x-6)
combine like terms!!
8x+4
Answer:
A.) 8x + 4
Step-by-step explanation:
PLEASE HELP ME WITH ME MATH In a survey of 3500 people who owned a certain type of car, 1750 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
Answers
Answer:
50%
Step-by-step explanation:
3500 divided by 1750 is 2 which is equal to 50%