Answer:
A person standing on a moving walkway travels 60 feet in 20 seconds. What equation represents this relationship? How many feet will person travel 10 seconds?
Step-by-step explanation:
HELP ME
i need help
will give 30 points
Answer:
Step-by-step explanation:
Subtract.
(29v)−(−13v+59)
Answer:
(29v)−(−13v+59)
29v + 13v - 59
42v -59
Answer:
42v-59
Step-by-step explanation:
(29v)+13v-59 In this step we first simplify
42v-59 Add like numbers (v)
If g (x)= 3/2x+4, what is the value of g(2)?
Answer:
g(2) =7
Step-by-step explanation:
g (x)= 3/2x+4
Let x = 2
g (2)= 3/2 *2+4
= 3 +4
= 7
Answer: 3/8
Step-by-step explanation:
Put 2 as the x into the equation.
3/2(2)+4
Multiply 2•2
3/4+4
Add 4+4
3/8
Answer cannot be further simplified.
The height, h, in feet of a piece of cloth tied to a waterwheel in relation to sea level as a function of time, t, in seconds can be modeled by the equation h = 8 cosine (startfraction pi over 10 endfraction t). what is the period of the function? startfraction pi over 20 endfraction seconds startfraction pi over 10 endfraction seconds 8 seconds 20 seconds
Answer:
20 seconds
Step-by-step explanation:
I assume you mean \(h(t)=8\cos(\frac{\pi}{10}t)\) for your function.
As the given function is in the form of \(f(t)=a\cos(bt+c)+d\) (some textbooks may write this formula differently), the period is equal to \(\frac{2\pi}{|b|}\). Hence, the period of the given function is \(\frac{2\pi}{|\frac{\pi}{10}|}=\frac{2\pi}{1}*\frac{10}{\pi}=\frac{20\pi}{\pi}=20\), or 20 seconds.
The period of the function that relates the sea level as the function of time is given by: Option D: 20 seconds.
What are some properties of a cosine function?Suppose that we've got: \(f(x) = a\cos\left(\dfrac{2\pi x}{b}\right)\)
Then, this function has:
Amplitude (the maximum distance of the graph from the middle line) = aPeriod = bFor this case, we're given that:
\(h = 8\cos\left(\dfrac{\pi x}{10}\right)\)
We can rewrite it as:
\(h = 8\cos\left(\dfrac{2\pi x}{20}\right)\)
Thus, we get a = amplitude = 8 units(distance), and b = period = 20 units(time in seconds).
Thus, the period of the function that relates the sea level as the function of time is given by: Option D: 20 seconds.
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write an inequality relating −2e−nn2 to 121n2 for ≥ n≥1. (express numbers in exact form. use symbolic notation and fractions where needed.)
The inequality relating −2\(e^{(-n/n^2)}\) to 121/\(n^2\) for n ≥ 1 is -2\(e^{(-n/n^2)}\) ≤ 121/\(n^2\).
To derive the inequality, we start by comparing the expressions −2\(e^{(-n/n^2)}\) and 121/\(n^2\).
Since we want to express the numbers in exact form, we keep them as they are.
The inequality states that −2\(e^{(-n/n^2)}\) is less than or equal to 121/\(n^2\).
This means that the left-hand side is either less than or equal to the right-hand side.
The exponential function e^x is always positive, so −2\(e^{(-n/n^2)}\) is negative or zero.
On the other hand, 121/\(n^2\) is positive for n ≥ 1.
Therefore, the inequality −2\(e^{(-n/n^2)}\) ≤ 121/\(n^2\) holds true for n ≥ 1.
The negative or zero value of −2\(e^{(-n/n^2)}\) ensures that it will be less than or equal to the positive value of 121/\(n^2\).
In symbolic notation, the inequality can be written as −2\(e^{(-n/n^2)}\) ≤ 121/\(n^2\) for n ≥ 1.
This representation captures the relationship between the two expressions and establishes the condition that must be satisfied for the inequality to hold.
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I need help on 13 and 14, you will get 25 points with brainlyist!!!
Answer:
14 is C and 13 is also C
Step-by-step explanation:
so 14 and 13 a both C
mark brainliest or give 1 heart and 5 stars or maybe both
Arun's family took a road trip to Niagara Falls. Arun fell asleep 69% of the way through the trip. If Arun fell asleep after they had travelled 690 miles, what was the total length of the trip?
Find the value of a machine at the end of 4 years if the original cost was $1038 and r=0.28. Round to two decimal places.
We have a value function of a machine at the end of the year t that is:
\(V=C(1-r)^t\)We know that C = 1038 and r = 0.28.
We have to calcula the value of the machine after 4 years (t = 4).
Then, we replace the parameters with their values and calculate V as:
\(\begin{gathered} V(t)=C(1-r)^t \\ V(4)=1038\cdot(1-0.28)^4 \\ V(4)=1038\cdot0.72^4 \\ V(4)=1038\cdot0.26873856 \\ V(4)\approx278.95 \end{gathered}\)Answer: the value is $278.95.
y=1/3x+11/15 find x if y=6
Step-by-step explanation:
plug in y
6=1/3x+11/15
multiply both sides by 15 to get rid of the fraction
90 = 5x +11
move terms to make them like terms
-5x =11- 90
-5x = -79
divide both sides by -5
evaluate for x
Question Content Area
Net Present Value
A project has estimated annual net cash flows of $15,000 for ten
years and is estimated to cost $47,500. Assume a minimum acceptable
rate of return of 20%. Use
The required rate of return (or minimum acceptable rate of return) is 20 percent. If the net cash flows are $15,000 per year for ten years, the total cash flow is $150,000. The project's cost is $47,500. We can now apply the net present value formula to determine whether or not the project is feasible.
Net Present Value (NPV) = Cash flow / (1 + r)^n - Cost Where, r is the discount rate, n is the number of years, and Cost is the initial outlay.
Net Present Value = 150000 / (1 + 0.20)^10 - 47500
Net Present Value = $67,482.22
Since the NPV is positive, the project is feasible. When calculating net present value, it's important to remember that a positive NPV implies that the project is expected to generate a return that exceeds the cost of capital, whereas a negative NPV indicates that the project is expected to generate a return that is less than the cost of capital, and as a result, it should be avoided.
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Create a graph of the equation 3y=-6x-12
Answer:
Step-by-step explanation:
To graph the equation 3y = -6x - 12, we can start by finding the x and y intercepts.
The x-intercept is the point where y = 0, so we can substitute 0 for y in the equation:
3y = -6x - 12
3 * 0 = -6x - 12
0 = -6x - 12
12 = -6x
x = -2
So the x-intercept is (-2, 0).
The y-intercept is the point where x = 0, so we can substitute 0 for x in the equation:
3y = -6x - 12
3y = -6 * 0 - 12
3y = -12
y = -4
So the y-intercept is (0, -4).
Now that we have the x and y intercepts, we can plot the points on the graph and draw a line that passes through both points. This line will be the graph of the equation.
In this case, the graph of the equation 3y = -6x - 12 is a downward sloping line that passes through the points (-2, 0) and (0, -4).
PLEASE HELP DUE IN 1 HOUR, AND PLEASE DON'T PUT THOSE LINKS OR ELSE I WILL REPORT YOU.
Answer:
The inequality that models the story is h < 16.
Step-by-step explanation:
The information provided states that Eduardo ONLY wants 16 hot dogs at most which means he doesn't want to cook anymore hot dogs than 16 of them. The line below the symbol means that it could also equal to that number which is what Eduardo also wants. Now that we know the inequality, we also need to graph it. All you need to do is plot the endpoint at 16 with an arrow pointing to the left. It also requires a closed circle because it doesn't mean just less than, don't forget, it means less than OR equal to. A closed circle just means to shade the dot by the way.
Answer: h < 16
Step-by-step explanation:
h (the number of hotdogs) has to be less or equal to 16
for the line do a closed circle on 16, and have the arrow go left
Find a power series expansion about x = 0 for a general solution to the given differential equation. Your answer should include a general formula for the coefficients. y' - 2xy = 0 The recurrence relation for the coefficients of the power series is (Type an equation using k as the variable.)
The recurrence relation for the coefficients of the power series is given by c_(n+1) = (2/n+1) * c_n for n ≥ 0.
To find a power series expansion about x = 0 for the given differential equation y' - 2xy = 0, we can assume that the solution is of the form:
y(x) = ∑(n=0 to ∞) c_n * x^n
where c_n are the coefficients of the power series. Taking the derivative of y(x), we get:
y'(x) = ∑(n=1 to ∞) n * c_n * x^(n-1)
Substituting these expressions into the differential equation, we get:
∑(n=1 to ∞) n * c_n * x^(n-1) - 2x * ∑(n=0 to ∞) c_n * x^n = 0
Simplifying and regrouping terms, we get:
c_1 - 2c_0 * x + ∑(n=2 to ∞) [n * c_n * x^(n-1) - 2c_(n-1) * x^n] = 0
Since this equation holds for all values of x, we can equate the coefficients of each power of x to zero. This gives us a recurrence relation for the coefficients:
(n+1) * c_(n+1) = 2c_n for n ≥ 1
The initial condition for the series is y(0) = c_0. Therefore, the general solution to the differential equation is:
y(x) = c_0 + ∑(n=1 to ∞) (2^(n-1)/n!) * x^n
where c_0 is an arbitrary constant.
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What is the estimate sum of 208
Answer:
210
Step-by-step explanation:
Round the 208. 8 is closer to 10. so, it would ultimately round up to 210
Jonah teaches pet-training classes at the happy tails doggy daycare. yesterday, he taught 2 tricks to a group of dogs during a 30-minute class. jonah decided to create a longer class lasting 75 minutes. if he teaches tricks at the same rate, how many tricks will jonah teach during the 75-minute class?
During the 75-minute class, Jonah will teach 5 tricks. This is a problem with comparison. The longer the class lasts, the more tricks Jonah will teach.
How to solve a problem with comparison?The problem with comparison can be solved by understanding the connection between two variables.
Given
Jonah taught 2 tricks per 30-minute classHe created the longer class, 75-minute classHow many tricks will Jonah teach during the 75-minute class?
We can list two variables.
Class time Tricks
30 2
75 x
In this case, the longer the class lasts, the more tricks Jonah will teach.
\(\frac{30} {75} = \frac{2} {x}\)
\(x = \frac{75} {30} \times 2\)
\(x = \frac{75} {15}\)
\(x = 5\)
Hence, during the 75-minute class, Jonah will teach 5 tricks.
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the graph of y = f (x) is transformed into y = - f (1/3 (x 9)) 8. a. describe the transformations in the correct order.
The transformations are applied in the following order: horizontal translation, horizontal scaling, vertical reflection, and vertical scaling.
The transformations are applied in the following order:
Horizontal translation: The function is shifted 9 units to the right by subtracting 9 from the input variable x.
f(x) → f(x - 9)
Horizontal scaling: The function is compressed horizontally by a factor of 1/3 by dividing the input variable x by 3.
f(x - 9) → f(1/3(x - 9))
Vertical reflection: The function is reflected about the x-axis by multiplying the output values of f by -1.
f(1/3(x - 9)) → -f(1/3(x - 9))
Vertical scaling: The function is stretched vertically by a factor of 8 by multiplying the output values by 8.
-f(1/3(x - 9)) → -8f(1/3(x - 9))
Therefore, the transformations are applied in the following order: horizontal translation, horizontal scaling, vertical reflection, and vertical scaling.
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A sample of 528 people were asked how much they would be willing to pay for a sandwich. Their responses were approximately normal with a mean of $6.56 and a standard deviation of $1.19(a) What proportion of those surveyed would think $5 is too expensive for a sandwich? ( 3 decimat places) (b) What proportion of people surveyed would be willing to pay more than$6.75 for a sandwich? (3 decimal places) (c) What is the 35th percentile for how much people are willing to pay for a sandwich? (2 decimal places) $
Given that mean= 6.56 and standard deviation(σ)= 1.19
a) P(X ≤ 5)= ( (X-µ)/ σ) < (5- 6.56)/ 1.19)
= 0.094946
P(X ≤ 5)= 0.95
So 0.95 proportion of the survey would think $5 is too expensive for a sandwich.
b) P(X ≥ 6.75) = ( (X-µ)/ σ) < (6.75- 6.56)/ 1.19)
= 0.43656
0.43656 proportion of people surveyed would be willing to pay more than $6.75 for a sandwich.
c) P(X ≤ x)= 0.35
= P((x- µ)/ σ ≤ (x- 6.65)/ 1.19)
0.35
x= (-0.3853) (1.19) + 6.56
= 6.1015
6.1015 is the 35th percentile for how much people are willing to pay for a sandwich.
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Evaluate the expression if
m
=
−
4
,
n
=
1
,
p
=
2
,
q
=
−
6
,
r
=
5
,
and
t
=
−
2
.
|
16
+
4
(
3
q
+
p
)
The numeric value of the expression 16 + 4(3q + p) when q = 6 and p = 2 is given by: 96.
How to find the numeric value of a function or of an expression?To find the numeric value of a function, we replace each instance of the variable in the function by the desired value. This also works for multi-variable functions or expressions, as each instance of each variable will be replaced by their attributed values.
For this problem, the expression is given by:
16 + 4(3q + p)
The attributed values are given by:
q = 6, p = 2.
Hence the numeric value of the expression is found as follows:
16 + 4(3 x 6 + 2) = 16 + 4(18 + 2) = 16 + 4 x 20 = 16 + 80 = 96.
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Principal Time. Rate
$470. 10 days. 9%
Whats the interest?
Interest be I
If interest is daily
I=PRT/100I=470(10)(9)/100I=4230/10I=423$If interest is monthly (30days)
I=(470)(1/3)(9)/100I=470(3)/100I=1410/100I=14.10$Answer:
$ 1.20
Step-by-step explanation:
\(\sf Time = 10 \ days = \dfrac{10}{365}=\dfrac{2}{73}\)
\(Interest = Principal * time *rate\\\\\\=470*\dfrac{2}{73}*\dfrac{9}{100}\\\\= 1.20\)
= $ 1.20
Quadrilateral MARK will be reflected across the z-axis and then rotated 90° clockwise about the origin to create quadrilateral M"A"R"K". If M is located at - (-3,7)
What will be the y-coordinate of M”?
The answer is 3
Step-by-step explanation:
I have the answer key pdf and, that is what the answer said, so I am pretty sure this is right.
n+5n+7=43. I don't understand how to figure this out. please help me
Answer:
n=6
Step-by-step explanation:
The solution of the expression are,
⇒ n = 6
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The expression is,
⇒ n + 5n + 7 = 43
Now, We can solve the expression for n as;
⇒ n + 5n + 7 = 43
⇒ 6n + 7 = 43
⇒ 6n + 7 - 7 = 43 - 7
⇒ 6n = 36
⇒ n = 6
Thus, The solution of the expression are,
⇒ n = 6
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If there are four teams in a league, how many games will have to be played so that each team plays every other team once?
Answer:
6 matches
Step-by-step explanation:
Let’s call the teams A B C D
A will play B C D = 3 matches
B will play only C and D as it already played A, making 2 matches
C will play D, making 1 match
D has already played all
Total number of matches is thus 3 + 2 + 1 = 6 matches
find the diameter d(c d) of the opening 20cm from the vertex
The diameter d(c d) of the opening 20cm from the vertex is approximately 16.33cm.
To find the diameter of the opening 20cm from the vertex, we can use the fact that the cross-section of a cone is a circle. We can also use the formula for the slant height of a cone, which is given by the equation:
s = sqrt(r^2 + h^2)
where s is the slant height, r is the radius of the circular base, and h is the height of the cone.
In this case, we know that the height of the cone is 20cm from the vertex. We also know that the radius of the circular base is d/2, where d is the diameter we are trying to find.
So, using the formula for the slant height, we can write:
s = sqrt((d/2)^2 + 20^2)
We also know that the slant height of the cone is equal to the distance from the vertex to any point on the circumference of the base. Therefore, we can write:
s = r
where r is the radius of the circle formed by the cross-section of the cone at a height of 20cm from the vertex.
Now, equating the expressions for s and r, we get:
sqrt((d/2)^2 + 20^2) = d/2
Squaring both sides and simplifying, we get:
d^2 - 4d - 800 = 0
Using the quadratic formula, we can solve for d and get:
d = (4 + sqrt(4^2 + 4*800))/2
d = 4 + sqrt(3204))/2
d ≈ 16.33
Therefore, the long answer to your question is that the diameter of the opening 20cm from the vertex is approximately 16.33cm.
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Which relationships have the same constant of proportionality between yyy and xxx as the following table?
x y
4 32
7 56
8 64
Choose 3 answers:
a) 3y=24x
b) graph
c) graph
d) x y
2 16
3 24
6 48
e)
x y
5 30
9 72
10 8
According to the following table, the same constant of proportionality between yyy and xxx in the relation y=8x is.
The proportionality constant k is defined as k=y/x when y and x are two numbers that are directly proportional to one another. If you are aware of the proportionality constant, you can use the equation y=kx, where k is the proportionality constant you are interested in, to determine the direct link between x and y. As an example, we may write y = kx, where k is the proportionality constant, x is the quantity of gas in gallons, and y is the cost in dollars. In other words, the cost is directly related to the number of gallons pumped.
By calculating
32=4*8
56=7*8
64=8*8
Therefore, y=8x.
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what is the vertex of this parabola f (x)=−(x+3)(x+10)
Answer:
x = -6.667 y = 12.22
Step-by-step explanation:
You can easily figure out the vertex to a quadratic equation by inputting it into a graphing calculator and using the trace function to find the vertex. If you are stuck with these types of questions, I recommend investing in a TI-84 Plus CE.
what is the equation of the line that passes through the point (-3,-8) and has a slope of 4?
please help
Step-by-step explanation:
the easiest approach with a given point and the slope of the line is the point-slope form :
y - y1 = a(x - x1)
where "a" is the slope, and (x1, y1) is a point on the line.
so, we get
y - -8 = 4(x - -3)
y + 8 = 4(x + 3)
if we need the slope-intercept form
y = ax + b
we now simplify the point-slope form
y + 8 = 4x + 4×3 = 4x + 12
y = 4x + 4
The cost of the five most popular items at an airport gift shop include a $10. 99 decorative mug, a $3. 99 postcard, a $4. 59 keychain, a $16. 29 t-shirt, and a
The decorative mug at airport costs $10.99 and costs 70.99 Yuan. in China.
Let's choose the decorative mug with a cost of $10.99 and the country China with an exchange rate of 6.4651 Yuan per US dollar. To convert the cost of the decorative mug into Yuan, we need to multiply the cost by the exchange rate:
Cost in Yuan = $10.99 × 6.4651 Yuan/US dollar
Cost in Yuan = 70.986849 Yuan
Therefore, the cost of the decorative mug in China is 70.986849 Yuan. The exchange rate refers to the value of one currency for the purpose of conversion to another currency. It represents the amount of one currency that can be exchanged for a unit of another currency.
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Complete Question
The cost of the five most popular items at an airport gift shop includes a $10.99 decorative mug, a $3.99 postcard, a $4.59 keychain, a $16.29 t-shirt, and a $7.89 teddy bear. Everleigh is interested in seeing the cost of the items in another currency. The most current currency conversion rates for 1 U.S. dollar are the following:
Country:
China
Denmark
Sweden
Name of currency:
Yuan(china)
Krone(Denmark)
Krona(Sweden)
Exchange rate:
6.4651(china)
6.3394(Denmark)
8.6964(Sweden)
Choose one airport gift shop souvenir and one country. Convert the cost of the chosen souvenir into the currency of that country. Show all necessary mathematical calculations.
60 x 5=?
show me something cute
EX
Answer:
60×5= 0×5= 0= 6×5= 30
= 300
Answer:
60 x 5 = 300
and here's something cute
find the equilibrium of the difference equation and classify them as stable or unstable. use cobwebbing to find lim 4x^2t/x^2t 3 for the given initial values (x0=0.5 and x0=2)
The fixed point x(t) = 0 is unstable and the fixed point x(t) = 3 / 4 is stable. We have also shown that the limit does not exist for x0 = 0.5 and the limit is lim x(t) = 3 / 4 for x0 = 2.
The given difference equation is x(t+1) = 4x(t)2 / 3x(t)2We have to find the equilibrium of the given differential equation. Equilibrium occurs when the value of x(t) is not changing from one time step to another time step.
Therefore, we can write the equation of equilibrium as x(t+1) = x(t)This is called a fixed point. To find the fixed point of the given difference equation, we replace x(t+1) with x(t) and simplify it as follows:
x(t+1) = x(t)4x(t)2 / 3x(t)2 = x(t)4 / 3x(t)
= x(t)3 / 4
Thus, the fixed point of the given differential equation is x(t) = 0 and x(t) = 3 / 4.
We can see that the fixed point x(t) = 0 is unstable, and the fixed point x(t) = 3 / 4 is stable.
Thus, we have found the equilibrium of the given differential equation and classified them as stable or unstable. We have also used cobwebbing to find the limit lim x(t) as t → ∞ for the given initial values (x0 = 0.5 and x0 = 2).
We have shown that the fixed point x(t) = 0 is unstable, and the fixed point x(t) = 3 / 4 is stable. We have also shown that the limit does not exist for x0 = 0.5, and the limit is lim x(t) = 3 / 4 for x0 = 2.
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how many milliliters are equivalent to 7.3 liters