Base on the word problem, Bernard is currently 21.25 years old. When Hector turns 18, he will be (18 - 17) = 1 year older than his current age. At that time, Bernard will be (21.25 + 1) = 22.25 years old.
Word problem calculation.Let's start by assigning variables to represent the current ages of Bernard and Hector. Let B be Bernard's current age and H be Hector's current age. Then we can write two equations based on the given information:
"When Bernard was as old as Hector is now, Bernard's age was 4 times Hector's age then." This means that Bernard is currently (B - H) years older than Hector, and that the age difference between them has remained constant over time. So, we can write: B - (B - H) = 4(H - (B - H)).
Simplifying this equation, we get: B - B + H = 4(2H - B)
Simplifying further, we get: 5H - 4B = 0, or B = (5/4)H.
"When Hector will be as old as Bernard is now, the sum of their ages will be 51." This means that when Hector is (B - H) years older than his current age, their sum of ages will be 51. So, we can write: B + (B - H + (B - H)) = 51.
Simplifying this equation, we get: 3B - 2H = 51.
Now we have two equations with two variables. We can substitute the expression for B from the first equation into the second equation, and solve for H:
3B - 2H = 51
3(5/4)H - 2H = 51
(15/4)H = 51
H = 17
So, Hector is currently 17 years old. To find out how old Bernard will be when Hector turns 18, we can use the expression we found earlier for B in terms of H:
B = (5/4)H
B = (5/4)(17)
B = 21.25
So, Bernard is currently 21.25 years old. When Hector turns 18, he will be (18 - 17) = 1 year older than his current age. At that time, Bernard will be (21.25 + 1) = 22.25 years old.
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1.2.1 determine this family's annual medical aid tax credit,
(3)
1.2.2 this amount is deducted from annual tax payable. calculate this
family's monthly income tax after this tax credit
determine the zulu family's actual percentage tax paid of their monthly
.
taxable income.
(3)
[18]
2:
value added tax (vat)
15% vat is payable on all goods and services, except for sanitary pads, fresh
produce and a few other staple food items. we will assume that 1.0% of
To determine this family's annual medical aid tax credit, we need to consider their medical aid expenses for the year. Medical aid expenses are expenses related to medical services that are not covered by the government or medical insurance.
This family can claim a tax credit of up to R310 per month for the main member and the first dependent, and R209 per month for each additional dependent. This tax credit is only applicable to registered medical schemes and is deducted from the tax payable.
In addition to medical aid expenses, this family will also need to consider the 15% VAT payable on all goods and services, except for sanitary pads, fresh produce, and a few other staple food items. This means that if this family spends R10,000 on goods and services, they will need to pay an additional R1,500 in VAT.
However, the good news is that they won't have to pay VAT on their fresh produce and staple food items. This will help to reduce their overall expenditure on food, which is an essential expense for every family.
In conclusion, while this family will need to pay VAT on most goods and services, they can claim a tax credit for their medical aid expenses. Additionally, they won't have to pay VAT on fresh produce and staple food items, which will help to reduce their overall food expenditure.
By carefully managing their expenses and taking advantage of tax credits and exemptions, this family can ensure that they are able to provide for their essential needs while also managing their financial obligations.
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In a discussion between Modise and Benjamin about functions, Benjamin said that the diagram below represents a function, but Modise argued that it does not. Who is right? Motivate your answer. x - Input value C 5 8 y-Output value 2 5 1 9
Answer:
Modise is right.
This diagram does not represent a function because each input value does not correspond to exactly one output value. The input value 5 corresponds to two outputs, 2 and 9.
Solve the following absolute value equations. Show the solution set.
1/2=1/3-|(x-3/6)+x|
The solution set for the equation 1/2 = 1/3 - |(x-3/6)+x| is {1/12, -1/12}.
How to Solve Absolute Value Equations?To solve the equation 1/2 = 1/3 - |(x-3/6)+x|, we need to isolate the absolute value expression and solve for x in two cases.
Case 1: (x-3/6)+x is nonnegative, which means the absolute value can be removed.
1/2 = 1/3 - (x-3/6)-x
1/2 = 1/3 - 2x + 1/2
2x = 1/6
x = 1/12
Case 2: (x-3/6)+x is negative, which means the absolute value must be flipped.
1/2 = 1/3 + (x-3/6)+x
1/2 = 1/3 + 2x - 1/2
2x = -1/6
x = -1/12
Therefore, the solution set is {1/12, -1/12}.
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Let a = (- 2, 4, 2) and b = (1, 0, 3).
Find the component of b onto a
The component of b onto a is (-1/3, 2/3, -1/3).
To find the component of b onto a, we first need to find the projection of b onto a. The projection of b onto a is given by the formula:
proj_a(b) = (b dot a / ||a||^2) * a
where dot represents the dot product and ||a|| represents the magnitude of vector a.
We can calculate the dot product of a and b as follows:
a dot b = (-2*1) + (4*0) + (2*3) = 4
We can calculate the magnitude of a as follows:
||a|| = sqrt((-2)^2 + 4^2 + 2^2) = sqrt(24) = 2sqrt(6)
Now we can plug these values into the formula for the projection of b onto a:
proj_a(b) = (b dot a / ||a||^2) * a
proj_a(b) = (4 / (2sqrt(6))^2) * (-2, 4, 2)
proj_a(b) = (4 / 24) * (-2, 4, 2)
proj_a(b) = (-1/3, 2/3, -1/3)
Finally, the component of b onto a is simply the projection of b onto a:
comp_a(b) = (-1/3, 2/3, -1/3)
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find the volume and the total surface area
The volume of a trapezoidal prism is 2362.5.
The total surface area is 852.
We have,
The volume of a trapezoidal prism.
V = ((a + b) / 2) × h × l
where:
a and b are the lengths of the two parallel sides (the bases) of the trapezoid
h is the height of the trapezoid (the perpendicular distance between the two bases)
l is the length of the prism (the distance between the two trapezoidal faces)
Now,
a = 9
b = 12
l = 15
Height h can be calculated using the Pythagorean theorem.
15² = (12 - 9)² + h²
h² = 225 + 9
h² = 234
h = √234
h = 15
Now,
The volume of a trapezoidal prism.
V = ((a + b) / 2) × h × l
V = ((9 + 12) / 2) x 15 x 15
V = 2362.5
And,
The surface area (A) of a trapezoidal prism can be calculated using the formula:
A = ph + 2B
where p is the perimeter of the trapezoidal base, h is the height of the prism, and B is the area of one of the bases.
So,
p = 12 + 8 + 12 + 8 = 44
h = 15
B = 12 x 8 = 96
Now,
Total surface area.
= 44 x 15 + 2 x 96
= 660 + 192
= 852
Thus,
The volume of a trapezoidal prism is 2362.5.
The total surface area is 852.
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please help me! what is the Perimeter of base, Area of base, and Total surface area? PLEASE HELP
The perimeter of the base of the triangular prism =
The area of the base of the triangular prism =
The total surface area of the triangular prism =
What is a triangular prism?A triangular prism is a three-dimensional geometric shape that consists of two parallel triangular bases connected by three rectangular or parallelogram faces. The faces that connect the two bases are called lateral faces. The lateral edges are the edges that connect the lateral faces, and the base edges are the edges that form the triangles.
The perimeter of the base of the triangular prism
p = 10cm + 10cm + 12cm = 32cm
The area of the base of the triangular prism =
base area = (1/2) bh
= 1/2 × b × h = 1/2 × 12 × 8 = 48cm².
The total surface area of the triangular prism = (Perimeter of the base × Length of the prism) + (2 × Base Area)
= (32 + 34) + (2 × 48) = 66 + 96 = 162cm².
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(5 points) For each of the following vector fields F, decide whether it is conservative or not by computing the appropriate first order partial derivatives. Type in a potential function f (that is, a function f such that V f = F). If it is not conservative, type N. A. F(x, y) = (-6x – 7y) i +(-7x + 14y)j f (x,y) = = B. F(x, y) = -3yi – 2xj f(x,y) = N. = c. F(x, y, z) = -3xi – 2yj+k f(x, y, z) = D. F(x, y) = (-3 sin y)i + (-14y – 3x cosy)j f (x,y) = E. F(x, y, z) = -3x?i – 7y?j + 7z2k f (x, y, z) = - Note: Your answers should be either expressions of x, y and z (e.g. "3xy + 2yz"), or the letter "N"
A. The partial derivatives are not equal, F is not conservative, potential function f(x, y) = N
B. The partial derivatives are equal, F is conservative, potential function f(x, y) = -3xy - [tex]x^2[/tex] + C
C. The partial derivatives are not equal, F is not conservative, potential function f(x, y, z) = N
D. The partial derivatives are not equal, F is not conservative, potential function f(x, y, z) = N
E. The partial derivatives are not equal, F is not conservative, potential function f(x, y, z) = N
How to check if F(x, y) = (-6x – 7y) i +(-7x + 14y)j is conservative?A. F(x, y) = (-6x – 7y) i +(-7x + 14y)j
To check if F is conservative, we compute the partial derivatives:
∂F/∂y = -6i - 7j
∂F/∂x = -7i + 14j
Since the partial derivatives are not equal, F is not conservative.
Potential function f(x, y) = N
How to check if F(x, y) = -3yi – 2xj is conservative?B. F(x, y) = -3yi – 2xj
To check if F is conservative, we compute the partial derivatives:
∂F/∂y = -3i
∂F/∂x = -2j
Since the partial derivatives are equal, F is conservative.
Potential function f(x, y) =[tex]-3xy - x^2 + C[/tex], where C is a constant.
How to check if F(x, y, z) = -3xi – 2yj+k is conservative?C. F(x, y, z) = -3xi – 2yj+k
To check if F is conservative, we compute the partial derivatives:
∂F/∂x = -3i
∂F/∂y = -2j
∂F/∂z = k
Since the partial derivatives are not equal, F is not conservative.
Potential function f(x, y, z) = N
How to check if F(x, y) = (-3 sin y)i + (-14y – 3x cosy)j is conservative?D. F(x, y) = (-3 sin y)i + (-14y – 3x cosy)j
To check if F is conservative, we compute the partial derivatives:
∂F/∂y = -3cosy j - 14i
∂F/∂x = -3cosy j
Since the partial derivatives are not equal, F is not conservative.
Potential function f(x, y) = N
How to check if [tex]F(x, y, z) = -3xi - 7yj + 7z^2k[/tex] is conservative?E. [tex]F(x, y, z) = -3xi - 7yj + 7z^2k[/tex]
To check if F is conservative, we compute the partial derivatives:
∂F/∂x = -3i
∂F/∂y = -7j
∂F/∂z = 14zk
Since the partial derivatives are not equal, F is not conservative.
Potential function f(x, y, z) = N
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1. If Cos A = 1/4, what is Sin B?
2. Simplify Sin A + Cos B ÷ 2
3. If Tan B = 1/5, what is Tan A? Which angle is bigger, angle A or angle B?
Please answer all 3
a. Sin A = opposite/hypotenuse = √15/4
b. (Sin A + Cos B) ÷ 2 = (Sin A + Cos B)/2
c. Tan A = 1/5
The both angle could be of same size
How do we calculate?Since Cos A = adjacent/hypotenuse,
Applying the Pythagorean theorem,
we can find the opposite side:
opposite^2 + 1^2 = 4^2
opposite^2 = 16 - 1
opposite = √15
Now we can find the value of Sin A:
Sin A = opposite/hypotenuse = √15/4
b.
Sin A + Cos B = (Sin A) + (Cos B)
(Sin A + Cos B) ÷ 2 = (Sin A + Cos B)/2
c. Since Tan B = opposite/adjacent,
we use Pythagorean theorem to find the hypotenuse:
hypotenuse^2 = 5^2 + 1^2
hypotenuse = √26
Tan A = opposite/adjacent = 1/5
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What percent of the customers at the book sale spent less than 20 dollars? Show or explain how you got your answer
Find dx/dt at x = -5 if y = -5x^2 + 2 and dy/dt = - 4.
dx/dt = ?
x = -5, dx/dt is equal to -2/25.
To find dx/dt, we need to use the chain rule of differentiation.
We know that dy/dt = -4 and we have the equation y = -5x^2 + 2.
Taking the derivative of both sides with respect to t, we get:
dy/dt = d/dt (-5x^2 + 2)
Using the chain rule, we can write this as:
dy/dt = (-10x) (dx/dt)
Now, we can plug in x = -5 and dy/dt = -4:
-4 = (-10(-5)) (dx/dt)
Simplifying, we get:
-4 = 50 (dx/dt)
Dividing both sides by 50, we get:
dx/dt = -4/50
Simplifying further, we get:
dx/dt = -2/25
Therefore, at x = -5, dx/dt is equal to -2/25.
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NEED HELP ASAP PLEASE
Answer:
C
Step-by-step explanation:
All the other ones aren't increasing with the same proportion
Only C is increasing by same number each time (which is 26)
You spin a spinner that has 12 equal-sized sections numbered 1 to 12. Find the probability of p(less than 5 or greater than 9)
The probability of getting a number less than 5 or greater than 9 is:
P = 0.583
How to find the probability for the given event?The probability is equal to the quotient between the number of outcomes for the given event and the total number of outcomes.
The numbers that are less than 5 or greater than 9 are:
{1, 2, 3, 4, 10, 11, 12}
So 7 out of the total of 12 outcomes make the event true, then the probability we want to get is the quotient between these numbers:
P = 7/12 = 0.583
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The Yert family hires a landscaping company for 30 weeks. There are two companies to choose from. Green Lawns charges 2 for the first time they service your lawn, and the price will multiply by a factor of 0. 90 every week thereafter. Green Thumbs charges 400 for the first time they service your lawn, and then charges an additional 40 every week thereafter. At 30 weeks, if the Yert family chooses the company that is cheaper, how much money will they save?
Let's first calculate the total cost of using Green Lawns for 30 weeks. We can use the formula for the sum of a geometric series to do this:
Total cost of Green Lawns =[tex]2(1 - 0.9^30) / (1 - 0.9) + 0.9^30 * 2[/tex]
Total cost of Green Lawns = [tex]2(1.7379) / 0.1 + 0.0359[/tex]
Total cost of Green Lawns = 38.8179
Now let's calculate the total cost of using Green Thumbs for 30 weeks:
Total cost of Green Thumbs = [tex]400 + 40 * 29[/tex]
Total cost of Green Thumbs = 1160
Therefore, the Yert family would save:
$1160 - $38.8179 = $1121.18
So the Yert family would save $1,121.18 by choosing Green Lawns over Green Thumbs for 30 weeks.
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Find the linearization of the function at the given point. f(x, y) = e-¹⁰x-⁸y - 8y at (0, 0) A) L(x, y) = -8x - 10y B) L(x, y) = -8x - 10y + 1 C) L(x, y) = -10x - 8y + 1 D) L(x, y) = -10x - 8y
The linearization of the function f(x, y) = e-¹⁰x-⁸y - 8y at (0, 0) is L(x, y) = -10x - 8y + 1. The correct option is C.
To find the linearization of the given function at the point (0, 0), we need to compute the partial derivatives with respect to x and y and then evaluate them at the given point.
The function is f(x, y) = [tex]e^{(-10x-8y)[/tex] - 8y.
First, find the partial derivative with respect to x:
∂f/∂x = [tex]-10e^{(-10x-8y).[/tex]
Now, evaluate ∂f/∂x at (0, 0):
∂f/∂x(0, 0) = [tex]-10e^{(0)[/tex] = -10.
Next, find the partial derivative with respect to y:
∂f/∂y = [tex]-8e^{(-10x-8y)[/tex] - 8.
Now, evaluate ∂f/∂y at (0, 0):
∂f/∂y(0, 0) = [tex]-8e^{(0)[/tex] - 8 = -8 - 8 = -16.
Now, we can form the linearization:
L(x, y) = f(0, 0) + ∂f/∂x(0, 0)(x - 0) + ∂f/∂y(0, 0)(y - 0).
Evaluate f(0, 0):
f(0, 0) = [tex]e^{(-10(0)-8(0))} - 8(0) = e^{(0)} - 0 = 1.[/tex]
Finally, substitute the values into the linearization formula:
L(x, y) = 1 - 10x - 16y.
Comparing to the given options, the answer is:
C) L(x, y) = -10x - 8y + 1
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The main types of markets are called
answers)
(choose 1 of the 2 possible
1 point
O residential
customer
consumer
industrial
The main types of markets are:
Consumer markets: These are markets where individuals purchase goods or services for their personal use or consumption. Industrial markets: These are markets where businesses purchase goods or services for their own use in producing other goods or services.So, the correct answer is "consumer" and "industrial".
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A large chocolate bar has a base area of 61.04 square feet and its length is 0.3
foot shorter than twice its width. Find the length and the width of the bar.
The length and width of the chocolate bar is 14.5 feet and 7.6 feet.
What is length?
Length is a measure of the size of an object or distance between two points. It refers to the extent of something along its longest dimension, or the distance between two endpoints.
What is width?
Width refers to the measure of the distance from one side of an object to the other side, perpendicular to the length. In geometry, width is usually measured in units such as meters, feet, or inches.
According to the given information:
Let's start by assigning variables to represent the length and width of the chocolate bar. Let x be the width of the chocolate bar in feet. Then, according to the problem:
The length of the chocolate bar is 0.3 feet shorter than twice its width, which means the length is (2x - 0.3) feet.
The base area of the chocolate bar is given as 61.04 square feet. We can use this information to set up an equation:
x(2x - 0.3) = 61.04
Expanding the left side of the equation:
2x^2 - 0.3x = 61.04
Moving all the terms to one side of the equation:
2x^2 - 0.3x - 61.04 = 0
Now we can solve for x using the quadratic formula:
x = (-b ± sqrt(b^2 - 4ac)) / 2a
where a = 2, b = -0.3, and c = -61.04. Substituting these values and simplifying:
x = (0.3 ± sqrt(0.3^2 + 4(2)(61.04))) / (2(2))
x ≈ 7.6 or x ≈ -4.0
Since the width of the chocolate bar cannot be negative, we can discard the negative solution. Therefore, the width of the chocolate bar is approximately 7.6 feet.
To find the length, we can use the equation we set up earlier:
length = 2x - 0.3
Substituting x = 7.6:
length = 2(7.6) - 0.3
length ≈ 14.5
Therefore, the length of the chocolate bar is approximately 14.5 feet and the width is approximately 7.6 feet.
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Muriel and Ramon bought school supplies at the same store.
Muriel bought 2 boxes of pencils and 4 erasers for a total of $11.
Ramon bought 1 box of pencils and 3 erasers for a total of $7.
Which of the following systems of equations can be used to find p, the price in dollars of one box of pencils, and e, the
price in dollars of one eraser?
.
2p+ 4e = 11
p+3e = 7
2p+4e = 7
p+ 3e = 11
4p + 2e = 11
3p+e=7
4p +2e=7
3p+e=11
This system represents the purchase made by Muriel (2 boxes of pencils and 4 erasers for $11) and Ramon (1 box of pencils and 3 erasers for $7).
How to solveThe correct system of equations to find the price of one box of pencils (p) and one eraser (e) is:
2p + 4e = 11
p + 3e = 7
This system represents the purchase made by Muriel (2 boxes of pencils and 4 erasers for $11) and Ramon (1 box of pencils and 3 erasers for $7).
By solving this system of equations, you can determine the individual prices for a box of pencils and an eraser.
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A complementary pair of angles have a measure of 37∘ and (5x+3)∘. solve for x and the missing angle.
x= the missing angle is ___
The missing angle for x by the measures add up to 90° is 53°
Complementary angles are pairs of angles whose measures add up to 90°. In this problem, we are given two angles, one of which measures 37°, and the other of which has an unknown measure that we will call x. We are also told that these angles are complementary, which means that their measures add up to 90°.
So, we can set up an equation to represent this relationship:
37 + x = 90
We can simplify this equation by subtracting 37 from both sides:
x = 90 - 37
x = 53
Now we know that the measure of the second angle is 53°. But we can go further and solve for x to get a more complete solution.
In the problem statement, we are also given an expression for the second angle in terms of x:
5x + 3
We know that this angle measures 53°, so we can set up another equation to represent this relationship:
5x + 3 = 53
We can solve for x by first subtracting 3 from both sides:
5x = 50
Then, we can divide both sides by 5 to isolate x:
x = 10
Now we know that x has a value of 10, and we can substitute this value back into the expression for the second angle to find its measure:
= 5x + 3
= 5(10) + 3 = 53
Therefore, the missing angle is 53°, and x has a value of 10.
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Evaluate h'(9) where h(x) = f(x) · g(x) given the following.• f(9) = 9• f '(9) = −1.5• g(9) = 3• g'(9) = 2h'(x) =
In order to evaluate h'(9), we need to use the product rule, which states that the derivative of a product of two functions is equal to the first function times the derivative of the second function, plus the second function times the derivative of the first function. Mathematically, this can be expressed as:
(h(x))' = f(x)g'(x) + g(x)f'(x)
Using the given values, we can substitute them into the formula and solve for h'(9):
h'(x) = f(x)g'(x) + g(x)f'(x)
h'(9) = f(9)g'(9) + g(9)f'(9)
h'(9) = 9(2) + 3(-1.5)
h'(9) = 18 - 4.5
h'(9) = 13.5
Therefore, the value of h'(9) is 13.5.
In simpler terms, the product rule tells us that when we have a function that is the product of two other functions, we can find the derivative of that function by multiplying one function by the derivative of the other and adding it to the other function multiplied by the derivative of the first. In this case, we have two functions f(x) and g(x), and we use their respective values and derivatives to find the derivative of their product h(x).
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The function f(x) = –2x^3 + 39x^2 -216x + 6 has one local minimum and one local maximum.
The function f(x) = –2x^3 + 39x^2 -216x + 6 has one local minimum at x = 4 and one local maximum at x = 9.
To determine if the function f(x) = –2x^3 + 39x^2 -216x + 6 has a local minimum or maximum, we need to find the critical points of the function and then determine the nature of those critical points.
First, we take the derivative of the function to find the critical points:
f(x) = –2x^3 + 39x^2 -216x + 6
f'(x) = –6x^2 + 78x - 216
f'(x) = –6(x^2 - 13x + 36)
f'(x) = –6(x - 4)(x - 9)
Setting f'(x) = 0, we get:
–6(x - 4)(x - 9) = 0
This gives us two critical points at x = 4 and x = 9.
To determine the nature of these critical points, we need to look at the sign of the derivative on either side of each critical point.
When x < 4, we have:
f'(x) = –6(x^2 - 13x + 36) < 0
When 4 < x < 9, we have:
f'(x) = –6(x^2 - 13x + 36) > 0
When x > 9, we have:
f'(x) = –6(x^2 - 13x + 36) < 0
This means that f(x) is decreasing on the interval (–∞, 4), increasing on the interval (4, 9), and decreasing on the interval (9, ∞). Therefore, we have a local minimum at x = 4 and a local maximum at x = 9.
To confirm this, we can evaluate the function at these critical points:
f(4) = –2(4)^3 + 39(4)^2 -216(4) + 6 = –26
f(9) = –2(9)^3 + 39(9)^2 -216(9) + 6 = 603
Therefore, the function f(x) = –2x^3 + 39x^2 -216x + 6 has one local minimum at x = 4 and one local maximum at x = 9.
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Your rate of pay is $36. Per hour and you bill by the quarter hour you spent four hour and 30 minutes on a client project how much would I bill for 162. Or 144
If your rate of pay is $36 per hour and you bill by the quarter hour, you would bill $162 for 4 hours and 30 minutes project.
Based on the given information, your rate of pay is $36 per hour, and you bill by the quarter hour. You spent 4 hours and 30 minutes on a client project.
To calculate the bill, first convert the 30 minutes into quarter hours: 30 minutes = 2 quarter hours. In total, you worked for 4 hours and 2 quarter hours (18 quarter hours).
Now, multiply your rate of pay ($36) by the number of quarter hours (18) and divide by 4 to account for the quarter hour billing: ($36 * 18) / 4 = $162. Therefore, you would bill the client $162 for the project.
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Seven boys and five girls are going to a county fair to ride the teacup ride. each teacup seats four persons. tickets are assigned to specific teacups on the ride. if the 12 tickets for the numbered seats are given out random, determine the probability that four boys are given the first four seats on the first teacup.
The probability that four boys are given the first four seats on the first teacup is approximately equal to 0.004.
How to find the Probability?To determine the probability that four boys are given the first four seats on the first teacup.
The total number of ways to distribute 12 tickets among 12 seats is 12! (12 factorial), which is equal to 479,001,600.
We need to find the number of ways that four boys can be selected from the seven boys, multiplied by the number of ways that eight people (including the remaining three boys and five girls) can be selected from the ten remaining people,
multiplied by the number of ways that the selected people can be arranged on the teacup ride.
The number of ways to select four boys from seven boys is 7C4, which is equal to 35. The number of ways to select eight people from the remaining ten people is 10C8, which is equal to 45.
Finally, the number of ways to arrange the selected twelve people on the teacup ride is 4!, which is equal to 24.
Therefore, the probability that four boys are given the first four seats on the first teacup is (35 x 45 x 24) / 12!, which is approximately equal to 0.004.
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Please help me find x. Also show me step by step
Answer: x ≅ -0.9 or -1.8
Step-by-step explanation:
[tex]3(3x+4)^2 - 6 = 0[/tex]
[tex]3(3x+4)^2 = 6[/tex]
[tex]3(9x^2+24x+16) = 6[/tex]
[tex]9x^2+24x+16 = 2[/tex]
[tex]9x^2+24x+14 = 0[/tex]
Use the quadratric formula to get:
x ≅ -0.9 or -1.8
The length of a triangle is three times its width the perimeter of the rectangle is 24cmcalculate the area of the triangle
The area of the triangle is 6 cm².
Let's denote the width of the triangle as "w." According to the given information, the length of the triangle is three times its width, so the length can be expressed as "3w."
The perimeter of a rectangle is given by the formula: Perimeter = 2(length + width). In this case, the perimeter of the rectangle is given as 24 cm.
We can set up the following equation based on the given information:
24 = 2(3w + w)
Simplifying the equation:
24 = 2(4w)
12w = 24
w = 24/12
w = 2 cm
Now that we have the width of the triangle, we can find the length:
Length = 3w = 3 * 2 = 6 cm
The area of a triangle is given by the formula: Area = (base * height) / 2. In this case, the base of the triangle is the width (2 cm) and the height is the length (6 cm).
Area = (2 * 6) / 2
Area = 12 / 2
Area = 6 cm²
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Sammy Speedster drives a truck for the Quick 'N Fast Delivery
Service. Every day he drives a route from Houston to San Antonio, a
distance of 200 miles. In his logbook, he keeps a record of the
amount of time it takes to drive the route.
what's a reasonable domain and range?
In this scenario, the domain would be the set of all possible values for the amount of time it takes Sammy Speedster to drive from Houston to San Antonio. Since he is driving on a daily basis, the domain could be considered a continuous range from zero to some maximum value, perhaps 10 hours.
It's possible that Sammy could complete the trip in less than 3 hours if he were driving at a very high speed, but this would not be a common occurrence. Therefore, a reasonable domain could be considered to be between 3 and 10 hours.
The range, on the other hand, would be the set of all possible distances that Sammy could drive in the allotted time. Since we know that the distance is a constant 200 miles, the range would simply be 200 miles. It's possible that Sammy could drive more than 200 miles in a day if he were assigned additional routes, but this would not be relevant to this scenario.
In summary, a reasonable domain for Sammy's logbook would be between 3 and 10 hours, and the range would be a constant 200 miles.
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The amount y (in grams) of the radioactive isotope phosphorus-32 remaining after t days is y=a(0. 5)t/14, where a is the initial amount (in grams). What percent of the phosphorus-32 decays each day? Round your answer to the nearest hundredth of a percent
The percent of the phosphorus-32 decays each day is 0.56%.
The formula for the amount of radioactive isotope remaining after t days is given as:
y = a(0.5)^(t/14)
To find the percent of phosphorus-32 that decays each day, we need to find the fraction of the initial amount that decays each day. This can be found by subtracting the amount remaining after one day from the initial amount, and then dividing by the initial amount:
fraction decayed in one day = (a - a(0.5)^(1/14)) / a
Simplifying this expression gives:
fraction decayed in one day = 1 - (0.5)^(1/14)
To find the percent decayed in one day, we multiply by 100:
percent decayed in one day = 100(1 - (0.5)^(1/14))
Using a calculator, we get:
percent decayed in one day ≈ 0.56%
Therefore, the percent of phosphorus-32 that decays each day is approximately 0.56%.
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The Ferrells save $150 each month for their next summer vacation. Write an equation that they can use to find y, their savings, after x months
The equation that represents the Ferrells' savings after x months is y = 150x
In this equation, x represents the number of months that the Ferrells have been saving, and y represents the amount of money they have saved after x months.
The coefficient 150 represents the amount of money the Ferrells save each month, and it is multiplied by the number of months x to get the total savings y. For example, after 5 months of saving, the Ferrells would have saved:
y = 150(5) = $750
This equation can be used to calculate their savings at any point in time, as long as they continue to save $150 each month.
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Eva invests $6700 in a new savings account which earns 5.8% annual interest, compounded daily. what will be the value of her investment after 3 years? round to the nearest cent.
Answer:
$7973.26
Step-by-step explanation:
PV = $6700
i = 5.8% ÷ 365
n = 3 years · 365
Compound formula
FV = PV (1 + i)^n
FV = 6700 (1 + 5.8% ÷ 365)^(3 · 365)
FV = $7973.26 (rounded to the nearest cent)
Answer:
The value of Eva's investment after 3 years will be approximately $8,108.46. Rounded to the nearest cent, this is $8,108.45.
Step-by-step explanation:
We can use the formula for compound interest:
A = P(1 + r/n)^(nt)where:
A = the final amountP = the principal (starting amount)r = the annual interest rate (as a decimal)n = the number of times the interest is compounded per yeart = the time (in years)In this case, we have:
P = $6700r = 0.058 (since the interest rate is 5.8%)n = 365 (since the interest is compounded daily)t = 3Plugging these values into the formula, we get:
A = 6700(1 + 0.058/365)^(365*3)A ≈ $8,108.46Therefore, the value of Eva's investment after 3 years will be approximately $8,108.46. Rounded to the nearest cent, this is $8,108.45.
What is the answer to this
The temperature are the times indicated are:
T( 0) = 5.800°
T( 0.22) = -4.9094 °
T (0.44) = -2.6792 °
T(0.66) = 2.3244°
T(0.88) = 4.8184°
T(1.1) = -4.1686 °
How did we get the above ?To solve the above, we need to use the formuala that we given which is T(x) = 5.8cos(3.8πx)
Entering the various values of x, can can obtain
T(0) = 5.8 cos (3.8π (0) ) = 5.8cos(0) = 5.800
T(0.22) = 5.8 cos (3.8 π(0.22)) ≈ -4.9094
T(0.44) = 5.8cos (3.8π (0.44) ) ≈ - 2.6792
T(0.66) = 5.8cos(3.8π (0.66)) ≈ 2.3244
T(0.88) = 5.8cos(3.8π(0.88)) ≈ 4.8184
T(1.1) = 5.8 cos(3.8π(1.1 )) ≈ -4.1686
So the above answers are correct.
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A ball is dropped from a window at a height of 36 feet. the function h(x) = -16x2 + 36 represents the height (in feet) of the ball after x seconds. round
to the nearest tenth.
how long does it take for the ball to hit the ground?
It takes about 1.5 seconds for the ball to hit the ground.
How to calculate the time for ball to hit the ground?To find how long it takes for the ball to hit the ground, we need to find the value of x when h(x) = 0, since the height of the ball is 0 when it hits the ground. We can set -16x²+36 = 0 and solve for x:
-16x²+ 36 = 0
Dividing both sides by -16:
x² - 2.25 = 0
Adding 2.25 to both sides:
x²= 2.25
Taking the square root of both sides (we can ignore the negative root since time cannot be negative):
x = √(2.25) ≈ 1.5
Therefore, it takes about 1.5 seconds for the ball to hit the ground.
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