To find the general solution of the differential equation y' + 3y = te^(-4t), we will use the method of integrating factors.
First, we rewrite the equation in the standard form: y' + 3y - te^(-4t) = 0.
Next, we identify the integrating factor, which is given by the exponential of the integral of the coefficient of y, in this case, e^(∫3 dt) = e^(3t).
Multiplying both sides of the equation by the integrating factor, we have e^(3t)(y' + 3y) - e^(3t)te^(-4t) = 0.
Simplifying this expression, we get e^(3t)y' + 3e^(3t)y - t = 0.
Now, we can recognize the left-hand side as the derivative of the product of y and e^(3t), applying the product rule.
Differentiating the product y * e^(3t) with respect to t, we obtain e^(3t)y' + 3e^(3t)y = t.
Therefore, the differential equation can be written as d/dt(ye^(3t)) = t.
Integrating both sides of the equation with respect to t, we have ye^(3t) = (1/2)t^2 + C, where C is the constant of integration.
Finally, dividing both sides by e^(3t), we obtain the general solution: y = (1/2)e^(-3t)t^2 + Ce^(-3t), where C is the arbitrary constant.
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Find the total surface area of this cuboid. 4 cm 5 cm 2 cm
Answer:40
Step-by-step explanation:
Width x length x height
4 x 2 = 8 x 5 = 40
please help me form my equations
Interpolate the tollowing data set with Newton interpolation (P3 (x)=bo + b1 (x−x1)+b2 (x−x1 )(x−x2)+b3 (x−x1 )(x−x2)(x−x3))x i ∣1.0∣2.0∣3.0∣4.0 y i∣−1.0∣−6.1∣−19∣−12.1 The coefficient bo is Answer: The coefficient b1 is equal to Answer: The coefficient b2 is equal to Answer: The coefficient b3 is equal to Answer:
According to the statement the coefficient bo is -1.The coefficient b1 is equal to -5.1.The coefficient b2 is equal to -12.9.The coefficient b3 is equal to 6.9.
Newton interpolation is an algorithm used for the purpose of interpolation. The algorithm is based on constructing a polynomial curve that passes through the given data points of the data set. By evaluating this polynomial curve at the point x, we can find the interpolated value of the function f(x).
Here is the Newton Interpolation equation: P3 (x) = bo + b1 (x - x1) + b2 (x - x1)(x - x2) + b3 (x - x1)(x - x2)(x - x3)Given the data set xi | 1.0 | 2.0 | 3.0 | 4.0yi | -1.0 | -6.1 | -19 | -12.1Now, let us use Newton Interpolation to calculate the coefficients.bo = y0 = -1b1 = Δy0/x0_1 = (-6.1 + 1)/1 = -5.1b2 = Δy1/x1_2 = (-19 + 6.1)/(3 - 2) = -12.9b3 = Δy2/x2_3 = (-12.1 + 19)/(4 - 3) = 6.9Therefore, the coefficient bo is -1.
The coefficient b1 is equal to -5.1.The coefficient b2 is equal to -12.9.The coefficient b3 is equal to 6.9.The above Newton Interpolation gives the polynomial equation P3(x) = -1 - 5.1(x - 1) - 12.9(x - 1)(x - 2) + 6.9(x - 1)(x - 2)(x - 3).Hence, this is the answer of the given problem.
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A movie theater sends out a coupon for 70% off the price of a ticket.
a.) Write an equation for the situation, where y is the price of the ticket with the coupon and x is the original price.
b.) Graph the equation and explain why the line should only be in the first quadrant.
Answer:
0.70=y
Step-by-step explanation:
Hope this helps:)
what is the probability that any one of the ways identified in problem 3 would occur when the null hypothesis is true? [hint: use the second part of the binomial equation.]
The probability that any one of the ways identified in problem 3 is: 0.03.
In statistical hypothesis testing, the probability of observing a particular test statistic or a more extreme one under the null hypothesis is called the p-value. A small p-value indicates that the observed result is unlikely to occur by chance alone, and thus provides evidence against the null hypothesis.
In this case, problem 3 is not specified, so it is not possible to calculate the p-value. However, the hint suggests using the second part of the binomial equation. This might refer to the formula for calculating the probability of obtaining k or more successes in n independent Bernoulli trials, each with probability p of success. This formula is:
P(X ≥ k) = ∑(k to n) (n choose i) p^i (1-p)^(n-i)
where X is the number of successes, n is the number of trials, p is the probability of success in each trial, (n choose i) is the binomial coefficient, and the summation is taken from k to n inclusive.
If the null hypothesis is true, the probability of success is equal to the significance level α, which is typically chosen to be small (e.g., 0.05 or 0.01). The value of k depends on the specific problem and the test being performed.
Using this formula, we can calculate the probability of observing k or more successes in n trials when the null hypothesis is true. If this probability is small (i.e., less than α), we reject the null hypothesis in favor of the alternative hypothesis.
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Juan is a tennis player who has won 52% of his tennis matches.
What is the probability that he will lose his next tennis match?
48%
2%
52%
50%
The probability that Juan loses his next tennis match is 48%
How to determine the probability that he will lose his next tennis match?From the question, we have the following parameters
The proportion of tennis matches won
p = 52%
This proportion implies that the probability that the player will win his next tennis match
So, we have the following representations
Probability of winning, p = 52%
Express the percentage as decimal
So, we have the following representations
Probability of winning, p = 0.52
The probability of losing the next match is the complement of the probability of winning
This is represented as
Probability of losing = 1 - Probability of winning,
Substitute the known values in the above equation
So, we have the following equation
Probability of losing = 1 - 0.52
Evaluate
Probability of losing = 0.48
Hence, the probability is 0.48 or 48%
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In a mixed school, the number of girls is 375. if the boys to girls is 4:5.how many boys are in the school
Answer:
300
Step-by-step explanation:
375 divided by 5=75
Each “1”=75
4x75=300
There are 300 boys.
Hope this makes sense
Answer:
300 boys
Step-by-step explanation:
Let the number of boys = x
Girls: 375
boys : girls = 4 : 5
total in the ratio is 9
girls are 5/9 of total, and are 375
boys are 4/9 of total
5/9 x = 375
x = 375 × 9/5
x = 675
Boys are 4/9 of total.
4/9 × 675 = 300
why is the golden ratio positive?
(1±sqrt5)/2
why +
Answer:
A ratio must be positive.
Step-by-step explanation:
A ratio is comparing two things. For example, the number of sisters as a ratio to the number of brothers. If you have 2 sisters, and 1 brother, the ratio of sisters and brothers would be 2:1. this number does not make sense as -2:1.
Out of 500 people surveyed, how many would you expect considered reading books or surfing the Internet as the best entertainment value
Out of the 500 people surveyed, we would expect approximately 155 of them to consider reading books or surfing the Internet as the best entertainment value.
To calculate the expected number of people who considered reading books or surfing the Internet as the best entertainment value out of the 500 surveyed, we need to calculate the percentage corresponding to reading books and surfing the Internet.
The percentage for reading books is 22% and the percentage for surfing the Internet is 9%. To find the combined percentage, we add these two percentages:
22% + 9% = 31%
Now, we can calculate the expected number by multiplying the combined percentage by the total number of people surveyed:
Expected number = 31% of 500 = (31/100) * 500 = 155
The complete question is:
Out of 500 people surveyed, how many would you expect considered reading books or surfing the Internet as the best entertainment value?
Best Entertainment Value
Type of Entertainment Percent
Playing Interactive Games 48
Reading Books 22
Renting Movies 10
Going to Movie Theaters 10
Surfing the Internet 9
Watching Television 1
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An empty box is shaped like a rectangular prism. The box has a base area of 10 square foot and a height of 3foot. How much packing material is required to fill the box?
Answer:
30 cubic feet
Step-by-step explanation:
Base of 10 sq ft x 3 ft = 30 cubic feet
can you please help anwser 3,4,5,6.
3. The scale factor is of: 1 : 360.
The lengths and scale factors are given as follows:
4. Length of 7.5 in and scale factor of 1 : 96.
5. Length of 48 cm and scale factor of 1 : 400
6. Length of 18 in and scale factor of 1 : 9.
What is a scale?The meaning of the scale of a drawing is how much each unit in the drawing represents in actual distance.
The scale factor is the ratio between the ratio of the dimension of the drawn shape by the actual dimension.
Each feet is composed by 12 inches, hence the scale factor for item 3 is given by:
1/(20 x 12) = 1 : 360.
The lengths for items 4, 5 and 6 are given by the division of the actual length by the measure represented by a single unit, hence:
Item 4: 60/8 = 7.5 in.Item 5: 192/4 = 48 cm.Item 6: 13.5/1.5 x 2 = 18 in.The scale factors are given as follows:
Item 4: 1/(8 x 12) = 1 : 96.Item 5: 1/(4 x 100) = 1 : 400, as each m has 100 cm.Item 6: 2/(1.5 x 12) = 2 : 18 = 1 : 9.Learn more about scales at brainly.com/question/13036238
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1a. Triangle FUN has vertices located at F (-2,-3), U(4,-2), and N (1,2) Part A- find the length of UN. Show your work. B- Find the slope of UF. PLEASE HELP ASAP!
pls don't remove this question again lol
a) Hence the distance between U and N is d=5 units.
b)Hence the slope of UF is \(\frac{1}{6}\)
The triangle FUN has vertices located at F(-2,-3), U(4,-2) and N(1,2)
a) Find the length of the UN,
We know that distance between two points is-
let two points (x,y) and (s,t) then
d=√((s-x)²+(t-y)²)
We have U(4,-2) and N(1,2)
d=√(1-4)²+(2+2)²
d=√9+16
d=√25
d=5
Hence the distance between U and N is d=5 units.
b) Find the slope of UF
We know that the formula for slope of (x,y) and (s,t)
\(m=\frac{t-y}{s-x}\\\)
We have U(4,-2) and F(-2,-3)
\(m=\frac{-3+2}{-2-4}\\\\m=\frac{-1}{-6}\\\\m=\frac{1}{6}\)
Hence the slope of UF is \(\frac{1}{6}\)
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A person places $3230 in an investment account earning an annual rate of 5.8%, compounded continuously. Using the formula V = P * e ^ (rt) , where V is the value of the account in t years, P is the principal initially invested, e is the base of a natural logarithm, and r is the rate of interest, determine the amount of money, to the nearest cent, in the account after 16 years .
Answer:
$8170.10
Step-by-step explanation:
Given data
P=$3230
R= 5.8%
T= 16 years
The given expression for the account is
V = P*e^(rt)
substotute
V = 3230*e^0.058*16
V= 3230 e^ 0.928
V=3230*2.5294452249
V=$8170.10
Hence the balance is $8170.10
Answer:
8170.11
Step-by-step explanation:
3230e^0.058(16)
Type the correct answer in the box. Use numerals instead of words. What value of x makes this equation true? -2x + 3 = -15 x =
Answer:
x=9
Step-by-step explanation:
plug in the number 9
-2(9)= -18
-18+3= -15
is this a function?
Answer:
No and yes. it depends on what type of function you are looking for this will be a Linear Function.
A 1000kg car drives around a flat horizontal circular asphalt track at 30 m/s. the radius, r, of the circular track is 120 m. how much force is required to make the car turn in a circle of this radius?
The force required to make the car turn in a circle of radius 120 m is 7500 N (Newtons).
To calculate the force required to make the car turn in a circle of the given radius, we need to find the centripetal force. The formula for centripetal force is:
F_c = m * a_c
Where F_c is the centripetal force, m is the mass of the car (1000 kg), and a_c is the centripetal acceleration.
To find the centripetal acceleration, use the formula:
a_c = v^2 / r
Where v is the speed of the car (30 m/s) and r is the radius of the circular track (120 m).
Step 1: Calculate centripetal acceleration:
a_c = (30 m/s)^2 / 120 m
a_c = 900 m^2/s^2 / 120 m
a_c = 7.5 m/s^2
Step 2: Calculate centripetal force:
F_c = 1000 kg * 7.5 m/s^2
F_c = 7500 N
So, the force required to make the car turn in a circle of radius 120 m is 7500 N (Newtons).
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Solve the inequality. 2(4 + 2x) ≥ 5x + 5?a. ≥2b. 2c. ≥3d. 3
Answer:
2(6x)_>10?a._>4b_>6d
EXPRESS in power notation
1. -1/8
2. -64/27
Express in rational number
1. (-3/2)
2. (1/5)
simplify (-4/3)³(2/5)-⁴ ÷ (7/4)
Answer:
Solution given:
1:
-1/8=\(\frac{-1³}{2³}=(\frac{-1³}{2³}=-1³*2^{-3}=-2^{-3}\)
2. -64/27
=\(\frac{-4^{3}}{3³}=\frac{-4³}{3³}=(\frac{-4}{3})^{3}\)
Express in rational number
1. (-3/2)=-3/2*2/2=-(3*2)*(2/2)=-6/4
2. (1/5)=1/5*5/5=5/25
and
(-4/3)³(2/5)-⁴ ÷ (7/4)
(-4³/3³)(2-⁴/5-⁴)÷7/4
(-64/27)(5⁴/2⁴)÷7/4
(-64/27)(625/16)÷7/4
(-64*625/(27*16))*4/7
-2500/27*4/7
-10000/169
(-100/13)²
geometry!! pls help asap
The statement that proves that polygon ABCD is not a rectangle is: C. Slope of AD × slope of AB ≠ -1 and slope of BC × slope of AB ≠ -1.
What is a Rectangle?A rectangle is a quadrilateral that has four right angles, this means that two sides of the rectangle intersect each other perpendicularly to form right angles.
Thus, the slope of each pair of sides that intersect perpendicularly equals -1.
Therefore, for polygon ABCD to be a rectangle, we must prove that each pair of intersecting sides that meet have a a slopes that gives -1 when multiplied together. If the product of their slopes is not equal to -1, then the polygon is not a rectangle.
Conclusively, the statement that proves that polygon ABCD is not a rectangle is: C. Slope of AD × slope of AB ≠ -1 and slope of BC × slope of AB ≠ -1.
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what percent of twenty is 11
Answer:
55%
Step-by-step explanation:
first, you set up the problem as two fractions: 11 is to 20 as x is to 100. you cross multiply the 11 and 100, then divide that by 20 which gives you 55, which you divide by 100 for the percentage answer.
A company has recently been hiring new employees. Today the company has 33% more employees than it did a year ago. If there are currently
53,200 employees, how many employees did the company have a year ago?
Answer:
Sorry , I might be wrong : 35664
Step-by-step explanation:
So, first, we can find 33% of 53,200
That is 17,556
Then, we can subtract 17556 from 53,200
We get 35664
The table lists the number of members at a local gym for selected years, where year I represents 2002, year 3 represents 2004, and soon.Year* y = number of members2002 1382004 3532006 573802008 720109100Use the ordered pairs (5,73) and (7,80) to find the equation of a line that approximates the data. Express your answer in slope-intercept form. (If necessary, round the slope to the nearest hundredth and the y-intercept to the nearest whole number.)
ANSWER
y = 3.5x + 56
EXPLANATION
The slope of a line passing through points (x1, y1) and (x2, y2) is,
\(m=\frac{y_2-y_1_{}}{x_2-x_1}\)And the slope-intercept form of the equation of a line is,
\(y=mx+b\)Where m is the slope and b is the y-intercept.
In this problem, we have to use points (5, 73) and (7, 80) to find the equation of the line. First, we can find the slope,
\(m=\frac{80-73}{7-5}=\frac{7}{2}\)For now, the equation is,
\(y=\frac{7}{2}x+b\)We have to find the y-intercept, by replacing x and y for the coordinates of one of the given points,
\(80=\frac{7}{2}\cdot7+b\)And solve for b,
\(80=\frac{49}{2}+b\)\(b=80-\frac{49}{2}=\frac{160-49}{2}=\frac{111}{2}\)The equation is,
\(y=\frac{7}{2}x+\frac{111}{2}\)The slope as a decimal is 3.5 and the y-intercept, rounded to the nearest whole number is 56, so the equation is y = 3.5x + 56
what operation is needed There will be 460 people at the sport's award banquet. If each table seats 8 people, how many tables are needed?A. B. C.D.
`The total number T of people at the sport's award banquet is ;
\(T=460\text{ people}\)the capacity C of each table is given as;
\(C=8\text{ people/table}\)To determine the number of tables N needed for the sport's award banquet, we will divide the total number of people by the capacity of each table;
\(N=\frac{T}{C}\)Substituting the values of T and C, we have;
\(\begin{gathered} N=\frac{460}{8} \\ N=57.5 \\ N\approx58\text{ tables} \end{gathered}\)The number of tables needed is 58 tables
this test is too confusing for me please help me
Answer: 54
Step-by-step explanation:
(q67) Which statement best describes why
will converge or diverge?
The statement that best describes why ∫₁^∞ ²/(3x + 2)² dx will converge or diverge is option B. It will diverge because the corresponding limit does not exist.
How did we arrive at this assertion?To evaluate the convergence or divergence of the integral, examine the behavior of the integrand as x approaches infinity. In this case, as x gets larger, the denominator 3x + 2 also grows without bound. Therefore, the integrand ²/(3x + 2)² approaches zero as x goes to infinity.
However, the convergence or divergence of the integral is not totally determined by the behavior of the integrand; it also depends on the behavior of the limits of integration.
In this case, the lower limit is 1, and integrating from 1 to infinity. Since the integrand approaches zero but does not tend to a finite value as x goes to infinity, the integral ∫₁^∞ ²/(3x + 2)² dx does not converge. Hence, it diverges.
Therefore, the correct statement is option B. It will diverge because the corresponding limit does not exist.
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juan needs to make a total of 40 deliveries this week. so far he has completed 18 of them. what percentage of his total delivery has juan completed
Answer:
45.00%
Step-by-step explanation:
The total answers count 40 - it's 100%, so we to get a 1% value, divide 40 by 100 to get 0.40. Next, calculate the percentage of 18: divide 18 by 1% value (0.40), and you get 45.00% - it's your percentage grade.
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write the square root of 4√53/169
\( \sqrt{4 \frac{53}{169} } \)
\( \sqrt{ \frac{729}{169} } \)
\( \sqrt{ \frac{27}{13} } \)
▪▪▪ Cutest Ghost ▪▪▪In the triangle,ZPQRis a right angle. P Q R Given thatQT I PR,which statement must be true? (G.7)(1 point) Ο Α. ΡQ QR QR TR O B. PT TQ TO TR O C. PQ TQ PR PQ D. PT TR
Solution
For this case we can see that QT is perpendicular to PR and we want to find the correct proportional rule and for this case is:
C. PT/TQ = PR/TQ
whats 105 to the power of 20 pls help its big question
Answer:
lol is this possible i tried doing it but couldnt haha i googled it and well it said 2.6532977e+40
Step-by-step explanation:
Answer:
2.65329771×10 to the power of 40
Step-by-step explanation:
Use scientific notation to get the simplest answer
please help with this question!
Answer: The first 3 options
Step-by-step explanation:
You have to make sure that the given variable would be able to equal -5. The \(\geq\) sign in the second and third answer show that the variable could be equivalent to -5.
Answer:
g > -7, f ≤ -5 and g ≥ -5
Step-by-step explanation:
the < and > symbols mean less than and greater than respectively, but not including. Therefore -5 cannot be a valid solution if the range is (for example) g > -5. However, ≤ and ≥ mean less/greater than or equal to, so -5 would be a valid solution for g ≥ -5 (for example).