Answer:
m= -2/3
Step-by-step explanation:
m= y2-y1/ x2-x1
m= -5-(-3)/ -3-(-6)
m= -5+3/ -3+6
m= -2/3
Explain why the terms of the polynomial y2 + 7 are said to be realitvley prime
Answer:
The terms of the polynomial are relatively prime because the highest integer that divides them both is 1.
Step-by-step explanation:
Two numbers are said to be relatively prime if their greatest common factor ( GCF ) is 1 .
Now, the expression we are given in the question is a polynomial;
y² + 7.
The terms of the polynomial y² + 7 are y² and 7 and have no common factor and in fact cannot be factorized further. Thus, these terms are said to be relatively prime because the highest integer that divides them both is 1.
solve the PDE using separation of variables method Uxx = 1/2 Ut 0< X <3 with U(0,t) = U(3, t)=0, U(0, t) = 5sin(4πx)
The general solution of the partial differential equation is:
U(x, t) = Σ [Aₙ*sin((nπ/3)x)]*e^(-(nπ/3)²t)
How to solve Partial Differential Equations?The partial differential equation (PDE) is given as:
Uxx = (1/2)Ut with the boundary and initial conditions as 0< X <3 with U(0,t) = U(3, t)=0, U(0, t) = 5sin(4πx)
Assume that the solution can be written as a product of two functions:
U(x, t) = X(x)T(t)
Substituting this into the PDE, we have:
X''(x)T(t) = (1/2)X(x)T'(t)
Dividing both sides by X(x)T(t), we get:
(X''(x))/X(x) = (1/2)(T'(t))/T(t)
Since the left side only depends on x and the right side only depends on t, both sides must be equal to a constant, denoted as -λ²:
(X''(x))/X(x) = -λ²
(1/2)(T'(t))/T(t) = -λ²
Simplifying the second equation, we have:
T'(t)/T(t) = -2λ²
Solving the second equation, we find:
T(t) = Ce^(-2λ²t)
Applying the boundary condition U(0, t) = 0, we have:
U(0, t) = X(0)T(t) = 0
Since T(t) ≠ 0, we must have X(0) = 0.
Applying the boundary condition U(3, t) = 0, we have:
U(3, t) = X(3)T(t) = 0
Again, since T(t) ≠ 0, we must have X(3) = 0.
Therefore, we can conclude that X(x) must satisfy the following boundary value problem:
X''(x)/X(x) = -λ²
X(0) = 0
X(3) = 0
The general solution to this ordinary differential equation is given by:
X(x) = Asin(λx) + Bcos(λx)
Applying the initial condition U(x, 0) = 5*sin(4πx), we have:
U(x, 0) = X(x)T(0) = X(x)C
Comparing this with the given initial condition, we can conclude that T(0) = C = 5.
Therefore, the complete solution for U(x, t) is given by:
U(x, t) = Σ [Aₙsin(λₙx) + Bₙcos(λₙx)]*e^(-2(λₙ)²t)
where:
Σ represents the summation over all values of n
λₙ are the eigenvalues obtained from solving the boundary value problem for X(x).
To find the eigenvalues λₙ, we substitute the boundary conditions into the general solution for X(x):
X(0) = 0: Aₙsin(0) + Bₙcos(0) = 0
X(3) = 0: Aₙsin(3λₙ) + Bₙcos(3λₙ) = 0
From the first equation, we have Bₙ = 0.
From the second equation, we have Aₙ*sin(3λₙ) = 0. Since Aₙ ≠ 0, we must have sin(3λₙ) = 0.
This implies that 3λₙ = nπ, where n is an integer.
Therefore, λₙ = (nπ)/3.
Substituting the eigenvalues into the general solution, we have:
U(x, t) = Σ [Aₙ*sin((nπ/3)x)]*e^(-(nπ/3)²t)
where Aₙ are the coefficients that can be determined from the initial condition.
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The square root of -2 rounded to nearest 100th?
Answer:
√-2 ≈ 1.41i
Step-by-step explanation:
√-2 = i√2 = i × 1.414.. ≈ 1.41i
Logan calculated the mean absolute deviation of the points he earned throughout the year in four of his classes: geography, math, English, and theater.
geography: MAD of 3.5
math: MAD of 1.36
English: MAD of 1.8
theater: MAD of 3.15
In which class were his scores the closest together?
math
English
geography
theater
Since it had the lowest mean absolute deviation, his scores were closest together in Math.
What is the mean absolute deviation of a data-set?The mean of a data-set is given by the sum of all observations divided by the number of observations.The mean absolute deviation of a data-set is the sum of the absolute value of the difference between each observation and the mean, divided by the number of observations.The mean absolute deviation represents the average by which the values differ from the mean.Hence, lower values of the mean absolute deviation means that the scores are closer, and thus his scores were closest together in Math.
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The Davis's drank 9 gal 1 qt of milk last month and 7 gal 2 qt this month. How much milk is that?
9 gallons + 7 gallons = 16 gallons
1 qt + 2qt = 3 qts
Total = 16 gallons and 3 qts.
What is the volume of a sphere with a diameter of 10 m, rounded to the nearest tenth of a cubic meter
Answer:
4188.8 cm^3
Step-by-step explanation:
We can calculate the volume of a sphere by using the following equation:
\(\frac{4}{3}\pi r^{3}\)
(r=radius)
so let's just plug in what we know
4/3(pi)(10)^3
we can calculate this with a calculator to get 4188.8 cm^3.
Answer:
523.6
Step-by-step explanation:
Delta math
You are playing a game that uses two fair number cubes. If the total on the number cubes is either 11 or 2 on your next turn, you win the game. Whatpreitacility of wiring on your next turn? Express your answer as a percent. If necessary, round your answer to the nearest tenth.
Given the word problem, we can deduce the following information:
1. The game uses two fair number cubes.
2. If the total on the number cubes is either 11 or 2 on your next turn, you win the game.
To determine the probability of winning the next turn, we note that the two cubes have 36 possible outcomes since each dice has six combinations which are independent.
Rolling a 2 would have one possible outcome: (1,1)
Rolling an 11 would have two possible outcomes: (5,6) and (6,5)
So there would be three possible outcomes out of 36:
\(\begin{gathered} P=\frac{3}{36} \\ =\frac{1}{12} \end{gathered}\)The combined probability,P, is 1/12. We express this into percent by:
\(\begin{gathered} P=\frac{1}{12}(100) \\ =8.3 \end{gathered}\)Therefore, the answer is 8.3%.
Please help, solve for x
2/x = 30/-5
Answer:
-1/3
Step-by-step explanation:
You multiply the -5 by 2
Then divide the result by 30.
Levi earned $489.90 at his job when he worked for 23 hours. What was his hourly wage, in dollars per hour? (HELP!!!!)
help with 5 please( question tuped below too).
Prove that y=x+2 is a tangent to the locous P(2t²,4t).
find the point of contact of this tangent to this locous and hence find the equation of normal at the point.
thanks
9514 1404 393
Answer:
tangent point: (2, 4)normal: y = -x +6Step-by-step explanation:
The derivative of P with respect to t is ...
P' = (x', y') = (4t, 4)
so the slope of the curve for some value of t is ...
dy/dx = y'/x' = 4/(4t) = 1/t
The line we want to be a tangent is y = x +2, which has a slope of 1. The curve will have a slope of 1 where ...
1/t = 1 ⇒ t = 1
At t=1, the point P is (2·1², 4·1) = (2, 4). For x=2, the point on the desired tangent is y = x +2 = 2 +2 = 4, or (x, y) = (2, 4).
The curve and the given line both have a slope of 1 at the point (2, 4), so that is the tangent point.
__
The normal to the curve at (2, 4) will have a slope that is the opposite reciprocal of the slope of the tangent: -1/1 = -1. Then point-slope form of the equation of the normal line is ...
y -k = m(x -h) . . . . . . line with slope m through point (h, k)
y -4 = -1(x -2) . . . . . . line with slope -1 through point (2, 4)
y = -x +6 . . . . . . . . equation of the normal line in slope-intercept form
How many times larger is 6.255 x 10^10 than 1.5 × 10^8?
4.17
24.0
240
417
we get that 6.255 × 10¹⁰ larger than 1.5 × 10⁸ by 417 times.
We are given two expressions:
6.255 × 10¹⁰ and 1.5 × 10⁸
We need to tell that how much times is 6.255 × 10¹⁰ larger than 1.5 × 10⁸.
We will do this with the help of division.
So, we get that:
= 6.255 × 10¹⁰ ÷ 1.5 × 10⁸
= 6.255 × 10¹⁰⁻⁸ ÷ 1.5
= 6.255 × 10² ÷ 1.5
= 625.5 ÷ 1.5
= 417
Therefore, we get that 6.255 × 10¹⁰ larger than 1.5 × 10⁸ by 417 times.
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What course level took the longest to complete? University course and costs
............ . . . m m. .
Convert the following equation into
standard form.
y = -5x + 2
5x + [?]y = [ ]
Answer:
standard form is Ax + by + c = 0
Step-by-step explanation:
add 5x to each side to get 5x + y - 2 = 0
Write the equation of the circle graphed below
Answer:
were is the circle to be to be equated
Someone please answer it’s 50 points!!
Hello!
Let's consider what the question asks for:
==> equation of tangent line to y = 3sin(x)
--> at: x = 5π/4
To find the slope of the line at a specific point on the function
--> MUST find the derivative of equation
\(\frac{d}{dx} 3sin(x)=3cos(x)\)
Derivative is function to find slope of function at every specific point
--> let's find the slope at x = 5π/4
\(3cos(x)=3*cos(\dfrac{5\pi }{4} )=3*(-\dfrac{\sqrt{2} }{2} )=-\dfrac{3\sqrt{2} }{2}\)
Now that we found the slope, we must also find the point at which the tangent line touches the function
--> simply plug x = 5π/4' to find y
\(y=3sin(\dfrac{5\pi }{4} )=-\dfrac{3\sqrt{2} }{2}\)
--> thus our point which the tangent line and function touch is
\((\dfrac{5\pi }{4},-\dfrac{3\sqrt{2} }{2} )\)
Now let's write our tangent line's equation in point-slope form:
\(y+\dfrac{3\sqrt{2} }{2} =-\dfrac{3\sqrt{2} }{2} (x-\dfrac{5\pi }{4})\) <== Answer
how long would it tak to go 75 miles if you can go 45 mph
1.
If I have £400 and I give 15% of the total to charity, how much does the charity
receive?
melody won 8 tokens. Trish won 2 more than 5 times as many tokens as melody. What computation will give the number of tokens Trisha won?
Answer:
8^5 + 2 = Trisha's Tokens
Step-by-step explanation:
Answer:
42
Step-by-step explanation:
8 x 5 +2
What postulate would justify the following statement?
If D is between A and B, than AD+DB=AB
Answer:
A, D and B must be in a straight line.
Step-by-step explanation:
If D is between A and B, than AD+DB=AB
This would mean A, D and B would be in a straight line.
Carmen has taken out a loan for $800 to buy a car. She plans to pay back the loan at a rate of $40 per month. Ramona has borrowed $500 to buy a car, which she plans to pay back at a rate of $20 per month.
How long will it take Ramona to pay back her loan?
Answer:
It will take Ramona 25 months or 2 years and 1 month to pay back for the car.
Elmer borrowed $3150 from his brother Julio to pay for books and tuition. He agreed to repay
Julio in 6 months with simple annual interest at 4%. How much must Elmer pay back at the end of 6
months?
Answer: $3,276
Step-by-step explanation:
To find the amount of interest needed to be paid, you needed to multiply the amount of money by your interesate rate.
= 3150 x 0.04
= 126
So, we add this extra amount to be paid to the exisiting total
= 3150 + 126
= $3,276
Twice the sum of a number and 30 amounts to 20
Answer: -20
Step-by-step explanation:
Consider the number as x,
2(x+30)=20
x+30=20/2
x+30=10
x=10-30
x=-20
9. Difference between the place values of "1" in 3116365 is
PLSSSSSSSS HELPPPP MEEEE
Answer:
Step-by-step explanation:
first, rearrange the equation: y= -\(\frac{x}{6}\) +\(\frac{1}{3}\)
slope= -1/6
y intercept: 1/3
The figure shows four box-and-whisker plots. These represent variation in travel time for four different types of transportation from the beginning to the end of one route.
Conrad is at one end of the route. He is trying to decide how to get to an appointment at the other end. His appointment is in 30 minutes. Which type of transportation is LEAST likely to take more than 30 minutes?
Select one:
a.
bus
b.
car
c.
subway
d.
train
Comparing the median of each box-and-whisker plot, the type of transportation that is LEAST likely to take more than 30 minutes is: d. train.
How to Interpret a Box-and-whisker Plot?
In order to determine the transportation that is LEAST likely to take more than 30 minutes, we have to compare the median of each data set represented on the box-and-whisker plot for each transportation.
The box-and-whisker plot that has the lowest median would definitely represent the the transportation that is LEAST likely to take more than 30 minutes, since median represents the typical minutes or center of the data.
Therefore, from the box-and-whisker plots given, the one for train has the lowest median. Therefore train would LEAST likely take more than 30 minutes.
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what is that measure of
Step-by-step explanation:
Hey there!
After looking at the figure we can state that;
X + 53° = 105°. { the exterior angle is equal to the sum of adjacent interior angle}
X = 105° - 53°
Therefore, X = 52°
Hope it helps...
Question 4
12 marks
4.1 a. In each case find the unit cost and then state which is the better buy.
4 marks
6kg of potatoes for $2.45 or
15 kg of potatoes for $5.9 or
10 kg of potatoes for $3.92?
Answer:
The better buy is to buy 10 kilograms of potatoes at $ 3.92, since each kilogram costs $ 0.392.
Step-by-step explanation:
To find the cost per unit in each case and then state which is the better buy, the following calculations must be performed:
6kg of potatoes for $ 2.45:
2.45 / 6 = 0.408
15 kg of potatoes for $ 5.9:
5.90 / 15 = 0.393
10 kg of potatoes for $ 3.92:
3.92 / 10 = 0.392
Thus, the better buy is to buy 10 kilograms of potatoes at $ 3.92, since each kilogram costs $ 0.392.
Evaluate g(x) = 9x ^ 3 - x ^ 2 + 2 for g(2)
Answer:
g(x)=9x^3-x^2+2 for g(2)
Step-by-step explanation:
g(2)=9.2^3-2^2+2
=18^3-2^2+2
=18^1^4
=18^4
=104,976
Suppose that a scarf company estimates that its monthly cost is
C(a)=500x2 + 300 and its monthly revenue is
R(x) = -0.523 +6002-200+300, where x is in thousands of
scarves sold. The profit is the difference between the revenue and the cost.
What is the profit function, P(x)?
The profit function is P(x) = -500.523x^2 + 600x - 200.
To find the profit function, P(x), we need to subtract the cost function, C(a), from the revenue function, R(x).
Given:
Cost function: C(a) = 500x^2 + 300
Revenue function: R(x) = -0.523x^2 + 600x - 200 + 300
Profit function, P(x), is obtained by subtracting the cost function from the revenue function:
P(x) = R(x) - C(a)
P(x) = (-0.523x^2 + 600x - 200 + 300) - (500x^2 + 300)
Simplifying the expression:
P(x) = -0.523x^2 + 600x - 200 + 300 - 500x^2 - 300
P(x) = -500x^2 - 0.523x^2 + 600x + 300 - 200 - 300
P(x) = -500x^2 - 0.523x^2 + 600x - 200
Combining like terms:
P(x) = (-500 - 0.523)x^2 + 600x - 200
Simplifying further:
P(x) = -500.523x^2 + 600x - 200
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Natalie invests $2,000 into a savings account
which earns 11% per year. In 20 years, how
much will Natalie's investment be worth if
interest is compounded monthly? Round to the
nearest dollar.
Answer:
We can use the formula for compound interest to find the future value (FV) of Natalie's investment:
FV = P * (1 + r/n)^(n*t)
Where:
P is the principal amount (the initial investment), which is $2,000 in this case
r is the annual interest rate as a decimal, which is 11% or 0.11
n is the number of times the interest is compounded per year, which is 12 since interest is compounded monthly
t is the number of years, which is 20
Substituting the values into the formula, we get:
FV =
2
,
000
∗
(
1
+
0.11
/
12
)
(
12
∗
20
)
�
�
=
2,000 * (1.00917)^240
FV = $18,255.74
Therefore, after 20 years of compounded monthly interest at a rate of 11%, Natalie's investment of 2,000 will be worth approximately 18,256.
Answer:
$17,870
Step-by-step explanation:
You must use the formula for compound interest.
A = P(1 + r/n)^nt
I suggest you look it up at some point so that you can do these more easily in the future!