Answer:
Step-by-step explanation:
(2x² - 3x + 1 )(x - 3) = (2x² - 3x + 1)*x + (2x² - 3x + 1)*(-3)
= 2x²*x - 3x*x + 1*x + 2x²*(-3) - 3x*(-3) + 1*(-3)
= 2x³ - 3x² + x - 6x² + 9x - 3
= 2x³ - 3x² - 6x² + x + 9x - 3 {Combine like terms}
= 2x³ - 9x² + 10x - 3
Show your organized detailed work on a separate sheet of paper. Solve for
the variable.
-5 = 1/7a
Answer:
-35
Step-by-step explanation:
[tex]-5 = \frac{1}{7}a\\-35 = a[/tex]
I got this by multiplying the numerator by 7. This allows the denominator to be the same as the numerator, thus equalling 1.
1 * a = a
Answer: a = -35
Step-by-step explanation:
1. -5 = 1/7(a) || GIVEN
2. -5 * (7) = (7) * 1/7(a) || Isolate "a" on one side of the equation by multiplying 7 to the other side.
3. -35 = a
According to integration by parts method, ?f(x).g(x).dx is equal to:
A. f(x).?g(x).dx – ?(f?(x).?g(x).dx).dx
B. f(x).?g(x).dx + ?(f?(x).?g(x).dx).dx
C. - f(x).?g(x).dx–?(f?(x).?g(x).dx).dx
D. -f(x).?g(x).dx+?(f?(x).?g(x).dx).dx
Answer:
B is the answer
Step-by-step explanation:
[tex]f(x).?g(x).dx[/tex] + [tex]?(f?(x).?g(x).dx).dx[/tex] = [tex]?f(x).g(x).dx[/tex]
Hoped this helped.
The integral expression of the form ∫ f(x) · dg is equal to the composite expression f(x) · g(x) - ∫ g(x) df by applying integration by parts method. (Correct choice: A)
How to derive the rule of integration by parts
In this question we must derive a integration rule for the product of two functions that are integrable. The integration by parts method is inspired on the differentiation rule for the product of two differentiable functions, whose definition is shown below:
[tex]\frac{d}{dx} [f(x)\cdot g(x)] = f'(x) \cdot g(x) + f(x)\cdot g'(x)[/tex] (1)
If we integrate and used integral Calculus theorem on both sides of (1), then we have the following expression:
f(x) · g(x) = ∫ g(x) · df + ∫ f(x) · dg
∫ f(x) · dg = f(x) · g(x) - ∫ g(x) df
Therefore, the integral expression of the form ∫ f(x) · dg is equal to the composite expression f(x) · g(x) - ∫ g(x) df by applying integration by parts method. (Correct choice: A)
To learn more on integration by parts, we kindly invite to check this verified question: https://brainly.com/question/14402892
Find the value of x that makes ADEF-AXYZ.
N
y
4.5
7.5
E
3x-12
12
D
F
15
Answer:
Go on Calculators-free math help
Step-by-step explanation:
go on there and type the anwer and it is free
The model represents an equation
Solve for X
Answer:
5*(-8)
Step-by-step explanation:
Question and answer in photo... also no links... if you do i get administrator
keeping it plain and simple... DO NOT USE LINKS... AS ANSWERS OR ONE THAT IS AN ANSWER... could have a virus
ANSWER TODAY
Ω Entity001 And Project Omega Ω
other Brainly questions i have today that also need answering:
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EXAMPLE OF WHAT NOT TO TRUST BELOW:
Kyuubivi
Beginner
1 answer
6 people helped
Answer is in a photo. I couldn't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
bit.ly/3mCQlPZ
its not allowing me to send it. can i send somewhere else?
Step-by-step explanation:
What is the value of 95 - 10 + +2(141 - 7)?
Answer:
353
Step-by-step explanation:
95 - 10 + 2(141 - 7)
following PEMDAS we will do parenthesis first
95 - 10 + 2(134)
multiplication is next
95 - 10 + 268
addition and subtraction are interchangeable when using PEMDAS but you do whatever comes first. since it's subtraction first in this equation we will do 95 - 10.
85 + 268
now we are left with addition
85 + 268 = 353
Answer:
-3 4/5Step-by-step explanation:
-9 1/5 - 10 + 2/5 + 2(14 1/2 - 7) =-9 1/5 - 10 + 2/5 + 2(7 1/2) = -9 1/5 - 10 + 2/5 + 15 = (- 9 - 10 + 15) + (- 1/5 + 2/5)- 4 + 1/5 = -3 4/5Note. Solved as per your comment
0 = x - 7x + 16
Help
A rectangular sheet of cardboard 3 feet by 5 feet will be made into an open box by cutting equal-sized squares from each corner and folding up the four edges. A diagram of the unfolded box is provided in figure, the shaded region represents the area
that was cut from the corners of the box. What is the largest volume of such a box?
Answer:
4[tex]x^{3}[/tex] - 16[tex]x^{2}[/tex] + 15x
Step-by-step explanation:
length = 5 - 2x
width = 3 - 2x
heighth = x
x(5 - 2x)(3 - 2x)
x(15 -16x + 4[tex]x^{2}[/tex])
4[tex]x^{3}[/tex] - 16[tex]x^{2}[/tex] + 15x
The largest volume of such a box is 4.345[tex]ft^{3}[/tex].
Given that,
A rectangular sheet of cardboard 3 feet by 5 feet will be made into an open box by cutting equal-sized squares from each corner and folding up the four edges.
The shaded region represents the area that was cut from the corners of the box.
We have to determine,
The largest volume of such a box.
According to the question,
The height will be x
The width will be (3 − 2 x)
And the length will be ( 5− 2 x)
.
The formula for volume will be,
[tex]Volume = Length \times Height \times Width\\\\[/tex]
Substitute the values in the formula,
[tex]Volume = x(3-2x).(5-2x)\\\\Volume = (3x-6x^{2}).(5-2x)\\\\Volume = 3x(5-2x) - 6x^{2}(5-2x)\\\\Volume = 15x - 6x^{2} - 30x^{2} + 12x^{3}\\\\Volume = 12x^{3} -36x^{2} + 15x[/tex]
Then,
To Find the derivative of the equation,
[tex]V = 12x^{3} -36x^{2} + 15x\\\\Differentiate\ with\ respect\ to\ x\ both\ sides,\\\\\dfrac{dv}{dx} = \dfrac{d(12x^{3} -36x^{2} + 15x)}{dx}\\\\V' = 36x^{2} - 72x+15[/tex]
The critical numbers by seeing where V ' = 0,
[tex]= 36x^{2} -72x +15\\\\= 3 ( 12x^{2} - 24x +5 )\\[/tex]
By using the quadratic formula or your calculator to solve for
x = 0.23, and 1.6
x = 1.6 is not in the domain since that would make one of our side lengths less than zero. x = 0.23
Plug x back into the equations to get the dimensions,
[tex]3-2x = 3- 2 \times -0.23 = 3+0.46 = 3.46\\5-2x = 5 - 2 \times -0.23 = 5+0.46 = 5.46[/tex]
Therefore, the dimension are 0.23 ft x 3.46 ft x 5.46 ft.
Hence, The largest volume of such a box is 4.345[tex]ft^{3}[/tex].
To know more about Dimension click the link given below.
https://brainly.com/question/23288467
Can you combine 6 and 2i? Why or why not.
Answer:
u can with math u cant with history
Step-by-step explanation:
can i has brainliest
Answer:
no you can not because the 6 doesn't have the same variable as the 2
Step-by-step explanation:
pls tell me what is 10+10
Answer: it’s 20 hope this helps:)
Step-by-step explanation:
Answer
The answer is 20
x+1/x-1-x-1/x+1=7/12
Given:
The equation is:
[tex]\dfrac{x+1}{x-1}-\dfrac{x-1}{x+1}=\dfrac{7}{12}[/tex]
To find:
The value of x.
Solution:
Formulae used:
[tex](a+b)^2=a^2+2ab+b^2[/tex]
[tex](a-b)^2=a^2-2ab+b^2[/tex]
[tex](a-b)(a+b)=a^2-b^2[/tex]
We have,
[tex]\dfrac{x+1}{x-1}-\dfrac{x-1}{x+1}=\dfrac{7}{12}[/tex]
Taking LCM, we get
[tex]\dfrac{(x+1)^2-(x^2-1)^2}{(x-1)(x+1)}=\dfrac{7}{12}[/tex]
[tex]\dfrac{x^2+2x+1-(x^2-2x+1)}{x^2-1^2}=\dfrac{7}{12}[/tex]
On cross multiplication, we get
[tex]12(x^2+2x+1-x^2+2x-1)=7(x^2-1)[/tex]
[tex]12(4x)=7x^2-7[/tex]
[tex]48x=7x^2-7[/tex]
[tex]0=7x^2-48x-7[/tex]
Splitting the middle term, we get
[tex]7x^2-49x+x-7=0[/tex]
[tex]7x(x-7)+1(x-7)=0[/tex]
[tex](7x+1)(x-7)=0[/tex]
[tex]x=-\dfrac{1}{7},7[/tex]
Therefore, the values of x are [tex]-\dfrac{1}{7}[/tex] and [tex]7[/tex].
#5 George took a 30 question math quiz. She got 10% of the questions incorrect. How many questions did she
get incorrect?
Answer:
3
Step-by-step explanation:
Number of Questions = 30
Percentage incorrect = 10%
10% = 10 / 100 x 30
= 300 / 100
= 3
George got 3 questions incorrect.
PLEASE HELP!! 30 points :)
What's the volume of a cube with a side length of 11 inches
• 33 in
• 121 in
• 726 in
• 1331 in
Answer:
V= 1331in³
Step-by-step explanation:
Answer:
1331 in
Step-by-step explanation:
heeeelp plsssssss :)
Answer:
The answer is D of course
Step-by-step explanation:
Y- intercept; when the value of X=0 so,
4(0) - 3y = 24
-3y=24 over -3 over -3 we get -8
In a school the number of students with blonde hair to the numberof student with brown hair is 4:5 what fraction of students have blonde hair
Answer:
4 / 9th of students have blonde hair
Step-by-step explanation:
Fraction of blonde hair students to brown hair students = 4 : 5
Fraction of students having blonde hair = Blonde hair ratio share / Total ratio
= 4 / 9th of students have blonde hair
The graph below is an example of which type of function? On a coordinate plane, a function decreases, has a point of inflection, and then continues to decrease. quadratic linear cubic square root
Answer: its cubic
Step-by-step explanation:
The graph below is an example of a cubic type of function. Option C is correct.
What exactly is a function?A function is a statement, rule, or law that specifies the connection between two variables. Functions are common in mathematics and are required for the formulation of physical connections.
1. A parabola is the graph of a quadratic function. As a result, the presented graph is not a quadratic function graph.
2. A straight line is represented by a linear function. As a result, the presented graph is not a linear function graph.
3. A cubic function's end behavior is opposite at both ends. We can see that the presented graph satisfies these requirements.
4. A square root function's graph resembles a half parabola. As a result, it can't be the graph of the square root function.
The graph below is an example of a cubic type of function.
Hence,option C is correct.
To learn more about the function refer:
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#SPJ2
PLease Help asap !!!!!!!! plus brianliest
Answer:
100.000 liters of water would b your answer.
Step-by-step explanation:
if you round 103 to the nearest hundred you answer is 100 that how i got my answer 100.000
how can you tell if a function is linear by looking at the graph or the equation
HELP! find area! no links please:) also provide explanation
Answer:
A=30cm^2
Step-by-step explanation:
Area of a parallelogram is base X height
in this diagram base = 10 cm
height = 3 cm
3 X 10 = 30
Answer:
30 cm^2
Step-by-step explanation:
Formula of parallelogram = base * height
height = 3
base = 10
10(3) = 30
A person at a restaurant gets a 35% discount on her total bill. If her bill was $120, how much is her discount? How much is the total bill?
Answer:
so the discount is 42 and the bill is $78
Step-by-step explanation:
0.35*120=42
discount is 42
120-42=78
the bill is $78
can someone help me with this pleaseee ill give you brainliest and points :)
Find the missing side of the angle.
Need help,==== thank you!!
Answer:x=square root(239)
Step-by-step explanation:
The way to solve this is via the Pythagorean theorem(a^2 + b^2 = c^2)
a= a leg
b= another leg
c= hypotenuse
16^2 = square root(17)^2 + x^2
256 = 17+ x^2
239 = x^2
x=square root(239)
Help I don’t understand this
Answer:
Step-by-step explanation:
they are opposite angles, so we put them equal to each other.
25.
6a+10= 130
6a=120 a=20 so now we plug it in 6(20) +10= 130
26. 4a-4=2a+30
2a=34 a=17 sso now we plug in 4(17)-4= 64 2(17)+30= 64
27. 6y+1=4y+9 2x-5=x+7
2y=8 x=2
y=4
now plug in 6(4)+1=25 4(4)+9=25 2(2)-5= -1 (2)+7=9
Your friend built a model car the model is 5.7 inches long and is built on 1:36 ratio scale how long is the real car
it will be 205.2 inches!
Colton has math and reading homework tonight. Colton can solve each math problem
in 3 minutes and he can read each page in 1.5 minutes. The number of pages Colton
read is twice the number of math problems he solved, and it took him 54 minutes to
complete all of his homework. Determine the number of math problems Colton
solved and the number of pages he read.
Colton solved ____
math problems and read ____
pages.
Answer:
Colton solved 9 math problems and read 18 pages.
Expand.
Your answer should be a polynomial in standard form.
2x^2(9x^2 – 16)
You know your parents left a 20% tip. If they left $16 for the tip, what was the cost of the meal?
Answer:
The meal cost 80 dollars
0.6c+2.5=3.22 solve for c
Solve for all values of x: (x + 1)² + 9 = 0.
Consider the following sequence
152, -76, 38, -19
Write a rule for the nth term and then find [tex]a_7[/tex]
Answer:
a₇ = 2.375
Step-by-step explanation:
There is a common ratio r between consecutive terms, that is
r = [tex]\frac{-76}{152}[/tex] = [tex]\frac{38}{-76}[/tex] = [tex]\frac{-19}{38}[/tex] = - [tex]\frac{1}{2}[/tex]
This indicates the sequence is geometric with nth term
[tex]a_{n}[/tex] = a₁ [tex](r)^{n-1}[/tex]
where a₁ is the first term and r the common ratio
Here a₁ = 152 and r = - [tex]\frac{1}{2}[/tex] , then
[tex]a_{n}[/tex] = 152 [tex](-\frac{1}{2}) ^{n-1}[/tex] , so
a₇ = 152 [tex](-\frac{1}{2}) ^{6}[/tex] = 152 × [tex]\frac{1}{64}[/tex] = 2.375
Answer:
Solution given:
first term [a]=152
second term[b]=-76
common ratio[r]=[tex] \frac{-76}{152}[/tex]=-1/2
now
for nth term ,we have
nth term =a [tex] {r}^{n -1} [/tex]
now
7th term==152[tex] {-1/2}^{7 - 1} [/tex]
=152×1/64=19/8