Answer:
Math Quotient Verification
G For each ordered pair, determine whether it is a solution to the system of equations. 9x+2y=-5 2x-3y=-8 (x, y) (1, -7) (0, -4) (5,6) (-1,2) Is it a solution? Yes No X 5
To check if an ordered pair is a solution to a system of equations, we substitute the values of x and y into both equations and see if both equations are satisfied.
Let's check each ordered pair one by one:
(1, -7):
9x + 2y = -5 becomes 9(1) + 2(-7) = -5, which is false.
2x - 3y = -8 becomes 2(1) - 3(-7) = -8, which is true.
Therefore, (1, -7) is not a solution to the system of equations.
(0, -4):
9x + 2y = -5 becomes 9(0) + 2(-4) = -8, which is false.
2x - 3y = -8 becomes 2(0) - 3(-4) = 12, which is false.
Therefore, (0, -4) is not a solution to the system of equations.
(5, 6):
9x + 2y = -5 becomes 9(5) + 2(6) = 41, which is false.
2x - 3y = -8 becomes 2(5) - 3(6) = -8, which is true.
Therefore, (5, 6) is not a solution to the system of equations.
(-1, 2):
9x + 2y = -5 becomes 9(-1) + 2(2) = -11, which is false.
2x - 3y = -8 becomes 2(-1) - 3(2) = -8, which is true.
Therefore, (-1, 2) is not a solution to the system of equations.
Therefore, the answer is "No" for all the ordered pairs given in the problem.
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f(n) = 45 . J |K 4 5 n-1 Complete the recursive formula of f(n). ƒ(1) = f(n) = f(n-1).
Answer:
It looks like there might be a typo in the expression given. Assuming that "J" and "K" are just placeholders, we can write the expression as:
f(n) = 45 * |4 - 5(n-1)|
To find the recursive formula for this sequence, we need to determine how each term relates to the previous term. We can start by looking at the first few terms of the sequence:
f(1) = 45 * |4 - 5(1-1)| = 45 * |4 - 5(0)| = 45 * |4| = 180
f(2) = 45 * |4 - 5(2-1)| = 45 * |4 - 5(1)| = 45 * |-1| = 45
f(3) = 45 * |4 - 5(3-1)| = 45 * |4 - 5(2)| = 45 * |-6| = 270
From this, we can see that the sign of the expression inside the absolute value changes with each term, alternating between positive and negative. Furthermore, the magnitude of this expression increases by 5 with each term. We can use these observations to write the recursive formula:
f(1) = 180
f(n) = f(n-1) + (-1)^(n-1) * 5 * 45 for n >= 2
This formula says that the first term in the sequence is 180, and each subsequent term is found by adding or subtracting 225 (5 * 45) from the previous term, depending on whether n is odd or even.
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Solve for the unknown whole number in the following expressions
z ÷ 19= 4 R 16
Answer:
We can solve for the unknown whole number by using the formula:
Dividend = Divisor × Quotient + Remainder
In this case, the dividend is z, the divisor is 19, the quotient is the unknown whole number, and the remainder is 16. We can substitute these values into the formula and solve for the unknown whole number:
z = 19 × Quotient + 16
To isolate the variable (Quotient), we can subtract 16 from both sides:
z - 16 = 19 × Quotient
Then, we can divide both sides by 19 to solve for Quotient:
Quotient = (z - 16) ÷ 19
Therefore, the unknown whole number is (z - 16) ÷ 19.
Find g. Write your answer as a whole number or a decimal. Do not round.
The value of length of side g using the similar triangles is found as 20 ft.
Explain about the similar triangles?Triangles that are similar to one another in terms of shape, angle measurements, and proportion are said to be similar.If the single difference between two triangles is their size and perhaps the requirement to rotate or flip one of them, then they are similar.In the given figures:
DC || EA
So,
∠D = ∠A
∠C = ∠E
By Angle -Angle similarity both triangles are similar.
Thus,
Taking the ratios of their side, it will be also equal.
EA / DC = EB / BC
5 / 10 = g / 10
g = 10*10 / 5
g = 100 / 5
g = 20
Thus, the value of length of side g using the similar triangles is found as 20 ft.
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I need help with this
Angle PLE is measured at 90°. The options supplied do not contain the solution.
What measurement of an angle does not equal 90?The acute angle is defined as being less than 90 degrees. Right angles are 90 degrees in length. Angles that are obtuse have a greater angle than 90 degrees. Discover the various sorts of angles and examples of each.
As complementary angles, ZPLA and ZELA, we can infer that:
ZPLA + ZELA = 90°
Using the following expressions in place of ZPLA and ZELA, we obtain:
5x-2 + x+8 = 90
When we simplify the equation, we obtain:
6x + 6 = 90
6 is subtracted from both sides to yield:
6x = 84
Dividing by 6, we get:
x = 14
With the knowledge of x, we can determine the dimensions of ZPLA and ZELA:
ZPLA = 5x-2 = 5(14)-2 = 68°
ZELA = x+8 = 14+8 = 22°
Therefore, we can find the measure of angle PLE by subtracting the measures of ZPLA and ZELA from 180°:
PLE = 180 - ZPLA - ZELA
PLE = 180 - 68 - 22
PLE = 90
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You are dealt one card from a 52-card deck. Find the probability that you are not dealt a 3
Answer:
the answer is 12/13 simplified
Step-by-step explanation:
simplified
Suppose one hundred eleven people who shopped in a special t-shirt store were asked the number of t-shirts they own costing more than $19 each. 40/111 39/111 30/111 Relative frequency 20/111 23/111 17/111 10/111 5/111 2/111 0 1 1 2 3 4 5 6 7 Number of T-shirts costing more than $19 each Find the percent of people that own at most five t-shirts costing more than $19 each. (Round your answer to a whole number.) % Additional Materials eBook
The percent of people that own at most 4 T-Shirts costing more than $19 each is 76%.
The number of people who own at most four T-Shirts costing more than $19 is ⇒ n = N(1) + N(2) + N(3) + N(4),
where , N(i) represents the number of people who own "i" T-Shirts costing more than $19 each.
From the frequency histogram , we substitute the values and get;
⇒ n = 5 + 17 + 23 + 39
⇒ n = 84.
So, percentage of people who own at most four T-Shirts costing more than $19 each is calculated as :
⇒ (n/111) × 100% ;
⇒ (84/111) × 100% = 75.68% ≈ 76%.
Therefore, 76% of people that own at most 4 t-Shirts costing more than $19 each.
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The given question is incomplete, the complete question is
Suppose 111 people who shopped in a special t-shirt store were asked the number of t-shirts they own costing more than $19 each. The following relative frequency histogram shows the results of the survey.
The percent of people who own at most four T-Shirts costing more than $19 each is ?
(10
points
)
Let
S(t)= 1+e −t
1
. (a) Find
S ′
(t)
. (b) Which of the following equations hold true? Show why your choice is true. [Note: only one equation is true.] i.
S ′
(t)=S(t)
ii.
S ′
(t)=(S(t)) 2
iii.
S ′
(t)=S(t)(1−S(t))
iv.
S ′
(t)=−S(−t)
The derivative of S(t)= 1+e −t is S'(t) = S(t)(1 - S(t)). So, the correct answer is (iii).
To find S'(t), we can use the chain rule:
S'(t) = (d/dt) [1 + e^(-t/2)]^-2 * d/dt [1 + e^(-t/2)]
Using the chain rule again for the second derivative:
d/dt [1 + e^(-t/2)] = (-1/2)e^(-t/2)
d/dt [1 + e^(-t/2)]^-2 = -2(1 + e^(-t/2))^-3 * (-1/2)e^(-t/2) = (1/2) e^(-t/2) / (1 + e^(-t/2))^3
Substituting into the expression for S'(t), we have:
S'(t) = [(1/2) e^(-t/2) / (1 + e^(-t/2))^3] * [1 - (1/2)e^(-t/2)]
S'(t) = (1/2) e^(-t/2) / (1 + e^(-t/2))^3 * [2 - e^(-t/2)]
S'(t) = e^(-t/2) / (1 + e^(-t/2))^3 * [2 - e^(-t/2)]
Taking the derivative of S(t), we have:
S'(t) = e^(-t/2) / (1 + e^(-t/2))^2
Comparing this to the given choices, we can see that:
S'(t) = S(t) is not true, since S(t) = 1 + e^(-t/2) and S'(t) is a different function.
S'(t) = (S(t))^2 is not true, since (S(t))^2 = (1 + e^(-t/2))^2 is a different function from S'(t).
S'(t) = S(t)(1 - S(t)) is true, since we can substitute S(t) and S'(t) from above and simplify:
S'(t) = e^(-t/2) / (1 + e^(-t/2))^3 * [2 - e^(-t/2)]
S(t)(1 - S(t)) = [1 + e^(-t/2)] * [1 - (1 + e^(-t/2))] = e^(-t/2) / (1 + e^(-t/2))
Therefore, S'(t) = S(t)(1 - S(t)) is true.
S'(t) = -S(-t) is not true, since S(-t) = 1 + e^(t/2) and -S(-t) is a different function from S'(t).
So the correct choice is (iii): S'(t) = S(t)(1 - S(t)).
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Dylan has a pitcher with 1.65 L of orange juice. He pours out 0.2 L of the juice. Then he adds some sparkling water to the pitcher to make orangeade. He ends up with 1.9 L of orangeade. Solve the equation 1.65 - 0.2 + x= 1.9 to find the amount of sparkling water, x, Dylan adds to the pitcher.
please soon
edit nevermind I actually read the question and it's not that hard and I solved it so hehe
Answer:
Step-by-step explanation:
x= 0.45
Answer: 0.45 L of sparkling water
Step-by-step explanation:
1.65 - 0.2 = 1.45
1.9 - 1.45 = 0.45
0.45 L of sparkling water
A printing company bought a machine for $86.000. it's estimated life is 10 years with residual value of $6,000, Using the straight-line method, what's the book value of the machine at the end of year2?
Hence, at the end οf year 2, the machine's bοοk value is $70,000.
Examples οf residual value what?Example οf Calculating Residual Value fοr a Business-Owned Vehicle. Hence, if the cοrpοratiοn sells the car after 6 years, 60% οf the οriginal cοst οf the car is depreciated οver 6 years, and the residual value is 40%. Remaining Value Befοre Tax is anοther name fοr this value.
The cοst οf an asset is evenly dispersed acrοss the asset's useful life with the straight-line technique οf depreciatiοn. Cοmpute the annual depreciatiοn cοsts and deduct it frοm the machine's οriginal cοst tο arrive at the machine's bοοk value at the end οf year twο.
Yοu can cοmpute the yearly depreciatiοn expense as fοllοws:
Cοst οf Asset - Residual Value / Useful Life = Depreciatiοn Cοsts
Inputting the values prοvided yields:
Depreciatiοn Expense = ($86,000 - $6,000) / 10 = $8,000 per year
The machine's οriginal cοst must be subtracted frοm the bοοk value at the end οf year twο in οrder tο determine the machine's value:
Bοοk Value at End οf Year 2 = Cοst οf Asset - (Depreciatiοn Expense x Number οf Years)
Bοοk Value at End οf Year 2 = $86,000 - ($8,000 x 2) = $70,000
Thus, the machine's bοοk value at the end οf year twο is $70,000.
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work out 40÷160000.
write your answer in standard form.
The value of expression 40 divided by 160000 would be equal to 0.00025
How can we interpret the division?When 'a' is divided by 'b', then the result we get from the division is part of 'a' that each one of 'b' items will get. Division can be interpreted as equally dividing the number that is being divided into total x parts, where x is the number of parts the given number is divided.
We need to find the expression of 40 divided by 160000
A negative divided by a negative is positive, then
40÷160000 = 0.00025
Therefore, The value of 40 divided by 160000 is; 0.00025
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Some friends went out for a meal. The restaurant added a 10% service charge to the cost of the meal. The total bill was £126.50 including the service charge. What was the cost of the meal? Give your answer in pounds (£). Receipt Cost of the meal: £ Service charge: +10% Total: £126.50
Answer:
Let's start by setting up an equation to represent the problem. Let x be the cost of the meal:
x + 0.1x = 126.50
Simplifying the left side of the equation:
1.1x = 126.50
Dividing both sides by 1.1:
x = 115
Therefore, the cost of the meal was £115.
For the given functions f and g, complete parts (a)-(h). For parts (a)-(d), also find the domain. f(x) = 4x+9; g(x)=9x - 5
Answer:
(a) Find (f + g)(x)
To find (f + g)(x), we add the two functions f(x) and g(x):
(f + g)(x) = f(x) + g(x) = (4x + 9) + (9x - 5) = 13x + 4
The domain of (f + g)(x) is all real numbers, since there are no restrictions on x that would make (f + g)(x) undefined.
(b) Find (f - g)(x)
To find (f - g)(x), we subtract the function g(x) from f(x):
(f - g)(x) = f(x) - g(x) = (4x + 9) - (9x - 5) = -5x + 14
The domain of (f - g)(x) is all real numbers, since there are no restrictions on x that would make (f - g)(x) undefined.
(c) Find (f * g)(x)
To find (f * g)(x), we multiply the two functions f(x) and g(x):
(f * g)(x) = f(x) * g(x) = (4x + 9)(9x - 5) = 36x^2 + 11x - 45
The domain of (f * g)(x) is all real numbers, since there are no restrictions on x that would make (f * g)(x) undefined.
(d) Find (f / g)(x)
To find (f / g)(x), we divide the function f(x) by g(x):
(f / g)(x) = f(x) / g(x) = (4x + 9) / (9x - 5)
The domain of (f / g)(x) is all real numbers except x = 5/9, since this value would make the denominator of (f / g)(x) equal to zero, resulting in division by zero, which is undefined.
(e) Find f(g(x))
To find f(g(x)), we substitute g(x) into the expression for f(x):
f(g(x)) = 4g(x) + 9
Substituting the expression for g(x), we get:
f(g(x)) = 4(9x - 5) + 9 = 36x - 11
The domain of f(g(x)) is all real numbers, since there are no restrictions on x that would make f(g(x)) undefined.
(f) Find g(f(x))
To find g(f(x)), we substitute f(x) into the expression for g(x):
g(f(x)) = 9f(x) - 5
Substituting the expression for f(x), we get:
g(f(x)) = 9(4x + 9) - 5 = 36x + 76
The domain of g(f(x)) is all real numbers, since there are no restrictions on x that would make g(f(x)) undefined.
(g) Find f(f(x))
To find f(f(x)), we substitute f(x) into the expression for f(x):
f(f(x)) = 4f(x) + 9
Substituting the expression for f(x), we get:
f(f(x)) = 4(4x + 9) + 9 = 16x + 45
The domain of f(f(x)) is all real numbers, since there are no restrictions on x that would make f(f(x)) undefined.
(h) Find g(g(x))
To find g(g(x)), we substitute g(x) into the expression for g(x):
g(g(x)) = 9
Step-by-step explanation:
Answer:
Step-by-step explanation:
(a) Find f(g(x)).
To find f(g(x)), we first need to find g(x) and then substitute it into f(x).
g(x) = 9x - 5
f(g(x)) = f(9x - 5) = 4(9x - 5) + 9 = 36x - 11
Therefore, f(g(x)) = 36x - 11.
(b) Find g(f(x)).
To find g(f(x)), we first need to find f(x) and then substitute it into g(x).
f(x) = 4x + 9
g(f(x)) = g(4x + 9) = 9(4x + 9) - 5 = 36x + 76
Therefore, g(f(x)) = 36x + 76.
(c) Find f(f(x)).
To find f(f(x)), we need to substitute f(x) into f(x).
f(f(x)) = 4(4x + 9) + 9 = 16x + 45
Therefore, f(f(x)) = 16x + 45.
(d) Find g(g(x)).
To find g(g(x)), we need to substitute g(x) into g(x).
g(g(x)) = 9(9x - 5) - 5 = 81x - 50
Therefore, g(g(x)) = 81x - 50.
Domain of f(x) and g(x): Since both f(x) and g(x) are linear functions, their domains are all real numbers.
(e) Find the inverse of f(x).
To find the inverse of f(x), we need to switch the roles of x and f(x) and solve for f(x).
y = 4x + 9
x = 4y + 9
x - 9 = 4y
y = (x - 9) / 4
Therefore, the inverse of f(x) is f^(-1)(x) = (x - 9) / 4.
(f) Find the inverse of g(x).
To find the inverse of g(x), we need to switch the roles of x and g(x) and solve for g(x).
y = 9x - 5
x = 9y - 5
x + 5 = 9y
y = (x + 5) / 9
Therefore, the inverse of g(x) is g^(-1)(x) = (x + 5) / 9.
(g) Find the domain of f^(-1)(x).
The domain of f^(-1)(x) is the range of f(x). Since f(x) is a linear function, its range is all real numbers. Therefore, the domain of f^(-1)(x) is also all real numbers.
(h) Find the domain of g^(-1)(x).
The domain of g^(-1)(x) is the range of g(x). Since g(x) is a linear function, its range is all real numbers. Therefore, the domain of g^(-1)(x) is also all real numbers.
explain integral calculus
Answer:
Integral
Step-by-step explanation:
explain integral calculus
The position of a particle moving in the xy-plane is given by the parametric functions x (t) and y(t), where = t sin (nt") and (3t+1) . The position of the particle is (2,7) at time t = 3. What is the particle's position vector («(t), y(t)) ? dy dt 30 sin (mtº) + 2t* cos(xt) 180 (3t+1)' :) B 2n cos (*t) +2 - 27, 10 31+1 + 8 C (cos (t) +2 -1 - + 8) D (cos (182) +2 -1 - +10)
The position of the particle moving in the x-y plane is given by the parametric functions x(t) and y(t), where = t sin(n t'') and (3t+1). The position of the particle is (2) , 7) at time t = 3.
In mathematics, a parametric equation defines a set of quantities as a function of one or more independent variables called parameters. [1] Parametric equations are often used to represent the coordinates of points that constitute geometric objects such as curves or surfaces, called respectively parametric curves and parametric surfaces. In this case, the equations are collectively referred to as the object's parametric representation or parameter system or parametrization (or orthographic parametrization)
The velocity of the particle is zero at t = 1 second
v(x) = dx/dt
= d/dt (3t²- 6t)
= 6t−6.
At t = 1, v(x) = 0
v(y) =dy/dt
= d/dt (t²−2t)
=2t−2.
At t=1,
v(y) = 0
Hence v = [tex]\sqrt{v_x^2 + v_y^2}[/tex] = 0
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Wich one of the following expressions is equivalent to 7/tan b+ 7 tan b
Therefore, the expression [tex]\frac{7}{Tanb} +7Tanb[/tex] is equivalent to function. [tex]7*secb*cscb[/tex].
What is trigonometry?Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It includes the study of trigonometric functions such as sine, cosine, tangent, cotangent, secant, and cosecant, as well as their properties and applications.
Trigonometry is useful in a wide range of fields, including engineering, physics, navigation, astronomy, and surveying. It is often used to solve problems involving triangles, such as determining the height of a tall object, finding the distance between two points, or calculating the trajectory of a moving object.
The origins of trigonometry can be traced back to ancient civilizations such as the Babylonians, Greeks, and Indians, who developed various methods for calculating angles and distances. Today, trigonometry is an important part of mathematics education and continues to be used extensively in many fields of study.
Given by the question.
To simplify the expression 7/tan b + 7 tan b, we need to first recall the following trigonometric identity:
tan(x) * cot(x) = 1
Using this identity, we can rewrite the expression as:
[tex]\frac{7}{Tanb} +7Tanb[/tex]
= [tex]\frac{7}{Tanb} +7Tan^{2} b*cotb\\[/tex]
=[tex]\frac{7}{Tanb} +7*(sin^{2}/cos^{2}b)*(cosb/sinb)[/tex]
= [tex]\frac{7}{Tanb} +7*(cosb/sinb)[/tex]
= [tex]7*(1/tanb+sinb/cosb[/tex]
[tex]=7*(cosb/sinb+sinb/cosb)\\=7*((cos^{2}b+sin^{2}b)/(sinb/cosb))\\ =7*(1/(sinb/cosb))\\=7*secb*cscb[/tex]
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Can someone pls help me it would mean so much to me
Answer: y = 3x-2 (for first question)
Step-by-step explanation:
Equation of the line: y = mx+c. For A, it passes through (0, -2) and has a gradient of 3. So, you substitute the values inside the equation.
x = 0
y = -2
m = 3
-2 = 0+c
c= -2
ans: y = 3x-2
Use the same method to complete the rest of the questions. GL
Note: I am just a student, if I get this wrong I hope someone corrects me, thanks
the dcpromo wizard will guide you through which of the following installation scenarios? [check all that apply]
The Dcpromo wizard will guide you through e. All of the above installation scenarios
A utility in Active Directory called DCPromo (Domain Controller Promoter) installs and uninstalls Active Directory Domain Services and promotes domain controllers. Since Windows 2000, every version of Windows Server contains DCPromo, which creates forests and domains in Active Directory. It works with Windows Server and houses all network resources as a centralised security management solution.
The functionality aids in building a completely new forest structure. It allows for both the addition of a new domain tree to an existing forest and the addition of a child domain to an existing domain. Additionally, it degrades the domain controllers and ultimately deletes a domain or forest.
Complete Question:
The dcpromo wizard will guide you through which of the following installation scenarios? [check all that apply]
Creating an entirely new forest structure.
Adding a child domain to an existing domain.
Adding a new domain tree to an existing forest.
Demoting domain controllers and eventually removing a domain or forest
All of the above
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A bird is diving for fish in the ocean. His height above the water varies sinusoidally with time at 4 seconds, he spots a fish from a maximum height of 112 ft above water. He dives and at 7 seconds, he is at a minimum height of 14ft under water. Write an equation of the bird's height above the water as a function of time.
The equation of the bird's height above the water as a function of time can be expressed as:
H(t) = A * sin (B * t + C) + D
Where:
A is the amplitude, which is the difference between the maximum and minimum
B is angular frequency (2πf)
C is the phase shift
D is the midline
The maximum height is 112 ft and the minimum height is 14 ft, so A = 98ft.
The frequency of the cycle is 4 seconds (1 cycle every 4 seconds).
Therefore, the angular frequency is 2π/4 = π/2
The bird was at maximum height of 112 ft at t=4s, so the phase shift C = 0.
The midline is the average of the maximum and minimum, so D = (112+14)/2 = 63 ft.
Therefore, the equation of the bird's height above the water as a function of time is:
H(t) = 98 * sin (π/2 * t + 0) + 63
2 bags of dog food. How many days will 3/4 last?
Answer:
3/4 of a bag of dog food will last 3 days.
Question 4
Let us assume an original starting value of $4 trillion in 2033, but that the actual rate of
decline after 2033 was 10% greater than the 7.6% rate. (Notice that this refers to a 10%
relative increase over the 7.6% rate of decline that was originally estimated in the
lesson, and not an absolute increase of 10 percentage points.) In the questions below,
consider how this would affect the estimated value of the funds in 2038?
What is the new estimated value of the trust funds in 2038? Round to the nearest
The new estimated value of the trust funds in 2038 would be $2.5 trillion.
What is funds?Funds are resources of monetary value that can be used to acquire goods, services, or to meet financial obligations. They are usually obtained through the sale of goods and services or by borrowing. Funds can come from a variety of sources, including individuals, businesses, governments, and other organizations. Funds can be used to purchase assets such as stocks, bonds, real estate, or other forms of investments.
This is because a 10% relative increase over the original estimated 7.6% rate of decline means that the actual rate of decline is 8.36% (7.6% x 1.10 = 8.36%). Applying this rate to the original starting value of $4 trillion, the value of the trust funds in 2038 would be $4 trillion x 0.9164 (which is the equivalent of 1 - 0.0836) = $2.5 trillion.
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The new estimated value of the trust funds in 2038 would be $2.4 trillion.
What is trust fund?A trust fund is a legal arrangement in which a person or organization (the trustor) transfers assets to another person or organization (the trustee) to be managed and distributed for the benefit of a third party (the beneficiary). The trustor sets out a set of instructions (the trust deed) on how the trust funds should be handled, managed, and distributed. The trustee is legally bound to abide by these instructions, and is responsible for the management and distribution of the trust funds according to the trust deed. Trust funds can be used for a variety of purposes, such as providing for a beneficiary's education, medical care, or retirement.
This is because a 10% increase in the rate of decline would result in a rate of decline of 8.36% (7.6% plus 10% of 7.6%).
Using this new rate of decline, the value of the trust funds in 2038 would be $4 trillion multiplied by (1 - 0.0836)⁵,
which is equal to $2.4 trillion.
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Two cellphone companies are offering different rate plans. Rogers is offering $19.99 per month, which includes a
maximum of 200 weekday minutes plus $0.35 for every minute above the maximum. TELUS is offering $39.99 for a
maximum 300 weekday minutes, but it charges $0.10 for every minute above the maximum. Above how many minutes
would TELUS be the better choice?
THERE ARE 2 PARTS PLEASE ANSWER BOTH RIGHT TY HELPP!! There are 12 red cards, 17 blue cards, 14 purple cards, and 7 yellow cards in a hat.
Part A. What is the theoretical probability of drawing a purple card from the hat?
Part B.
In a trial, a card is drawn from the hat and then replaced 1,080 times. A purple card is drawn 324 times. How much greater is the experimental probability than the theoretical probability?
Enter the correct answers in the boxes.
A. The theoretical probability of drawing a purple card from the hat is ______.
B. The experimental probability of drawing a purple card is ____%
greater than the theoretical probability.
Part A. The probability pf drawing a purple card out of the hat is 28%.
Part B. The experimental probability is 2% greater than the theoretical probability.
Define probability?The probability that a specific event will occur is known as probability. The ratio of favourable outcomes to all other possible outcomes serves as a stand-in for the likelihood that an event will occur.
In numerous disciplines, including mathematics, statistics, physics, economics, and computer science, uncertain events are described and understood using probability theory. It is used to analyse risks, make decisions, and forecast events.
Now in the given question,
Total cards in the hat = 12 + 17 + 14 + 7 = 50 cards
Total purple cards in the hat = 14
Probability of getting a purple card from the hat = 14/50
= 0.28
= 28%
Now similarly for the experiment,
Probability = 324/1080
= 0.3
= 30%
Therefore, the experimental probability is 30% - 28% = 2% greater than the theoretical probability.
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Question 17 (2 points)
Suppose that 10% of Peloton bikes are defective and should be replaced. Peloton
offers one-year warranties on their new bikes, and should a customer use the bike in
the first year and discover the defect, the bike will be replaced. Peloton also knows
that 75% of customers use the bike in the first year. What is the probability a
customer will actually make a valid warranty claim?
0.075
0.10
0.175
0.75
The probability that a customer will actually make a valid warranty claim is 0.075.
What is Probability?A probability is a numerical representation of the likelihood or chance that a specific occurrence will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.
According to question:The probability that a customer will make a valid warranty claim is the probability that the customer both uses the bike in the first year (which has a probability of 0.75) and discovers a defect (which has a probability of 0.10).
Using the multiplication rule of probability, the probability that both of these events occur is:
0.75 x 0.10 = 0.075
Therefore, the probability that a customer will actually make a valid warranty claim is 0.075.
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A statics class has 50 students and among those students, 35 are business majors and 7 like grilled cheese. Of the business majors, 3 like grilled cheese. Find the probability that a randomly selected statistic student is a business major or likes grilled cheese
The probability that a randomly selected statistics student is a business major or likes grilled cheese is 0.78.
What is probability?Probability 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.
Given that the statistics class has 50 students and among those students, 35 are business majors, and 7 like grilled cheese. Of the business majors, 3 like grilled cheese.
The probability will be calculated as:-
P(AUB) = P(A) + P(B) - P(AB)
[tex]P(AUB)=\dfrac{35}{50}+\dfrac{7}{50}-\dfrac{3}{50}[/tex]
[tex]P(AUB)=\dfrac{42-3}{50}[/tex]
[tex]P(AUB)=\dfrac{39}{50}[/tex]
P(AUB) = 0.78
Therefore the probability that a randomly selected statistics student is a business major or likes grilled cheese is 0.78.
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can you find the value of constant k?
k=?
The constant k that makes f(x) continuous everywhere is k = 49/41.
What is a continuous function?If a function's limit at a given position exists and is the same as the function's value there, the function is said to be continuous at that location. If a function is continuous over its whole domain, then it is continuous everywhere. As the name implies, a continuous function is one whose graph is continuous throughout without any pauses or leaps. To put it another way, we say that a function is continuous if we can draw the curve (graph) of the function without ever picking up the pencil.
For f(x) to be continuous everywhere, it must be continuous at x = 7.
Using the left limit we have:
k(7)² = 49k
Using the right limit we have:
(7x + k) = 49 + k
Setting the limits equal we have:
49k = 49 + k = 8k
49k = 8k + 49
41k = 49
k = 49/41
Hence, the constant k that makes f(x) continuous everywhere is k = 49/41.
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The amount of money Sally earns in dollars, P, varies directly with the number, n, of necklaces she sells. When Sally sells 15 necklaces she earns $150.
Answer:
Equation: [tex]P=10n[/tex]
[tex]P=40[/tex] when n = 4
Step-by-step explanation:
Given
Direct Variation: P ∝ n
When n = 15, P = 150
Required
Determine the equation
Her earnings if she sold 4 necklaces
P ∝ n
Convert variation to equation
[tex]P=kn[/tex]
When P = 150, n = 15 (Substitute these values in the given equation)
[tex]150=k\times15[/tex]
Divide both sides by 15
[tex]\dfrac{150}{15} =\dfrac{k\times15}{15}[/tex]
[tex]10=k[/tex]
[tex]k=10[/tex]
Substitute k = 10 in [tex]P=kn[/tex]
[tex]P=10\times n[/tex]
[tex]P=10n[/tex] ------- Equation that relates P and n
When she sold 4 necklaces, n = 4
Substitute n = 4 in the formula above
[tex]P=10\times4[/tex]
[tex]P=40[/tex]
WILL MARK AS BRAINLIEST!!!!!!!!!!!!
The point on the parabola y=x^2 that is closest to the point (9,1/2) is (______,______). The distance between the two points is ________.
Hint: Obtain an expression for the square of the distance and see where it is minimized. (you don't have to use the hint)
The point on the paraboIa y = x² that is cIosest to the point (9, 1/2) is approximateIy (2.2913, 5.2491). The distance between the two points is approximateIy 6.0291.
What is finding point on curve?CaIcuIus optimization probIems incIude the quest for the point on a curve that is cIosest to a given point. Finding the shortest path between two Iocations on a surface or figuring out how much materiaI is required to make a certain form are just two exampIes of its numerous practicaI uses.
Finding the greatest or Ieast vaIue of a function under specific constraints is a common task in optimization issues. These kinds of issues can be found in a variety of discipIines, such as engineering, economics, physics, and bioIogy. We can increase judgements and process effectiveness by finding soIutions to optimization difficuIties.
For the given paraboIa to fund the cIosest point to (9, 1/2) we use the distance formuIa:
d = √((x2 - x1)² + (y2 - y1)²)
Let, (x, x²), be a point on the paraboIa thus:
d = √((x - 9)² + (x² - 1/2)²)
The minimum distance is found using the derivative:
d' = (x - 9) + 2(x² - 1/2)(2x) = 0
4x³ - 4x - 17 = 0
x ≈ 2.2913
Substituting the vaIue of x we have:
d = √((2.219 - 9)² + ((2.219)² - 1/2)²)
d ≈ 6.0291
Hence, the point on the paraboIa y = x² that is cIosest to the point (9, 1/2) is approximateIy (2.2913, 5.2491). The distance between the two points is approximateIy 6.0291.
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each square in the grid below has area 1. find the area of the irregular quadrilateral below. [asy] size( 200 ) ; int xmax
The required area of the irregular quadrilateral as given in the attached diagram is equal to 37.5 square units.
In the attached diagram,
Area of each square grid is equal to 1 square units.
Area of the irregular quadrilateral
= Area of the triangle A + Area of the triangle B + Area of the triangle C + Area of the rectangle D ___(1)
Area of triangle A = ( 1/2 ) × Base × height
= ( 1/2 ) × 4 × 8
= 16 square units
Area of triangle B = ( 1/2 ) × Base × height
= ( 1/2 ) × 5 × 5
= 12.5 square units
Area of triangle C = ( 1/2 ) × Base × height
= ( 1/2 ) × 3 × 4
= 6 square units
Area of rectangle D = length × width
= 3 × 1
= 3 square units
Substitute all the values in (1 ) we have,
Area of the irregular quadrilateral
= 16 + 12.5 + 6 + 3
= 37.5 square units.
Therefore, the area of irregular quadrilateral is equal to 37.5 square units.
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The above question is incomplete, the complete question is:
Each square in the grid below has area 1. Find the area of the irregular quadrilateral below.
Diagram is attached.
Roberto must make his costume for the school play. He needs a piece of fabric that is 2 2/3 yards long and 1 1/2 yard wide. What is the area of the piece of fabric Roberto needs?
Roberto needs 4 square yards of fabric to make his costume.
What is improper fraction?A fraction that has the numerator higher than or equal to the denominator is said to be inappropriate. For instance, the fraction 7/3 is incorrect since 7 is bigger than 3. Mixed numbers, which combine a whole number and a correct fraction, can be created from improper fractions.
Given that, piece of fabric that is 2 2/3 yards long and 1 1/2 yard wide.
Convert the length from a mixed number to an improper fraction:
2 2/3 = (2 x 3 + 2)/3 = 8/3
1 1/2 = 3/2
The area of the rectangle is:
Area = Length x Width
Substituting the values we have:
Area = (8/3) x (3/2) = 4
Hence, Roberto needs 4 square yards of fabric to make his costume.
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calculate zeff for a valence electron in carbon using slater's rules. submit an answer to two decimal places.
The value of Zeff for a valence electron in carbon using slater's rule is equals to 3.60.
Effective nuclear charge (Zeff) for a valence electron in carbon using Slater's rules,
Consider the shielding effect of the inner electrons.
Slater's rules state that the effective nuclear charge felt by an electron in an atom = the actual nuclear charge minus the shielding constant for that electron.
The shielding constant for an electron in a particular shell is determined by summing the contributions of all the electrons in inner shells.
Slater assigned the following shielding constants for each shell,
Electrons in the same shell contribute 0.35
Electrons in the next inner shell contribute 0.85
Electrons in all inner shells beyond that contribute 1.00
Carbon has an atomic number of 6, so it has six electrons.
The first two electrons are in the inner shell, leaving four valence electrons in the outer shell.
Zeff for a valence electron in carbon,
Consider the contributions of the inner electrons.
Two electrons in the 1s orbital contribute
2× 0.35 = 0.70 to the shielding constant.
The two electrons in the 2s orbital contribute
2 × 0.85 = 1.70 to the shielding constant.
There are no electrons in the 2p orbitals,
This implies,
They do not contribute to the shielding constant.
Thus, the effective nuclear charge felt by a valence electron in carbon is,
Zeff
= 6 - 0.70 - 1.70
= 3.60
Rounding to two decimal places, we get,
Zeff = 3.60
Therefore, the Zeff for a valence electron in carbon is equals to 3.60.
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