Therefore, the maximum distance between Emma and Lily over the time interval 0<= t <= 15 is 22.8 units.
To answer this question, we need to know the position functions of Emma and Lily over the time interval 0<= t <= 15. Let's assume that Emma's position function is given by x(t) = 2t^2 + 5t and Lily's position function is given by y(t) = 3t^2 - 6t + 8. To find the maximum distance between Emma and Lily, we need to find the maximum value of the distance function between them. The distance between Emma and Lily at time t is given by D(t) = sqrt((x(t) - y(t))^2). Simplifying this expression, we get D(t) = sqrt((2t^2 + 5t - 3t^2 + 6t - 8)^2) = sqrt((t^2 + 11t + 64)^2). To find the maximum value of D(t) over the interval 0<= t <= 15, we can take the derivative of D(t) and set it equal to 0. After some calculations, we find that the maximum value of D(t) occurs at t = 7.5 seconds, and the maximum distance between Emma and Lily is approximately 22.8 units. Therefore, the maximum distance between Emma and Lily over the time interval 0<= t <= 15 is 22.8 units.
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please help asap thank you sm
The correct option B: (-9/4 × 3/2)×(6/3 × 5/7) = -9/7×(3/2×6/3)×5/7 is the associative property of multiplication.
What is defined as the associative property of multiplication?"Associate" means to join or connect with something. The associative property of multiplication states that when multiplying three numbers, the end result will always be the same regardless of how the numbers are grouped.The associative property of multiplication refers to the fact that the order in which three numbers are multiplied has no effect on the result.Because multiplication is built on addition, the associative property is only after addition and multiplication. Subtraction and division are not subject to the law of associativity.The formula for associative property of multiplication is-
a×(b×c) = (a×b)×c
For four digits;
(a×b)×(c×d) = a×(b×c)×d
Thus, from the given option the condition for associative law is only satisfied in option B.
(-9/4 × 3/2)×(6/3 × 5/7) = -9/7×(3/2×6/3)×5/7
Thus, the correct option for the associative property of multiplication s chosen.
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Suppose two cars depart from a four-way intersection at the same time, one heading north and the other heading west. The car heading north travels at the steady speed of 40 ft/sec and the car heading west travels at the steady speed of 64 ft/sec.
When are the two cars 1 mile apart? (Round your answer to one decimal place.)
answer in seconds
50.76922
after 50.8 seconds because
50.76922*40 +50.76922*64= 5279.99 which rounds to the admit if feet in a miles
Need help on this question with some explanation "Graph the image of the figure on the right under the given translation". T(3,2) (x,y) . Thanks in advance!
ANSWER
\(A\)EXPLANATION
The given translation
\((3,2)\)This means the shape will be translated 3units to the right and 2 units up.
That is;
\(\begin{gathered} (x+3) \\ (y+2) \end{gathered}\)What’s the answer please
Answer:
0,∞
Thus, the range of the square root function is [0,∞)
Step-by-step explanation:
When its domain is greater than or equal to zero, its inverse is the squaring function. When its domain is all real numbers, its range includes complex numbers such as i, -1.
A is the center of one circle, and B is the
center of the other. Explain how we know triangle ABC
is equilateral.
Answer:
a
Step-by-step explanation:
because it goes to one side to another
A cleaning company charges $3 per square foot and a flat fee of $100. Which of the equations below shows the cost y, in dollars, of cleaning a patio that is x square foot? Hint: find the key words and corresponding amounts for "m" and "b."
Step-by-step explanation:
Y= 3x + b
As, to know the total, which is y, we need to solve for the cost
So first for money per square foot = $3
For square foot = x
So, price for x square foot = $3x (here this is the value of m)
Now, for value b,
$100 is added to the cost as its the charge, as the flat fee
So the value of b = $100
So, y=3x+100
What inverse operation should be used to isolate the variable in the equation j ÷ 12 = 50?
Answer:
multiplication...
Step-by-step explanation:
50 x 12 = 600
SO...
j = 600
SOO...
600 / 12 = 50
there u go
can i be brainiest...
What is the volume of the composite object below?
Answer:
216 cubic inches
Step-by-step explanation:
(9)(3)(3)=81
(3)(3)(9)=81
(3)(3)(6)=54
81+81+54=216
So, it's 216 cubic inches in volume.
50 = -1/3b + 20
What is b?
Peter gets a part-time job cleaning and maintaining his community's swimming pool and spa. 40 Here are some facts about the pool and spa. There is an outlet for a vacuum halfway along the side of the pool. What is the approximate length the hose should be to reach any part of the pool surface from there? Show your work. Answer Between _and _ft.
The length of the hose to reach any part of the pool surface from there will be 22.36 feet.
How to calculate the length:Length of hose = √(L² + W²)
The pool is 20 feet long and 10 feet wide, the length of the hose needed would be approximately:
Length of hose = √(20² + 10²) = √500 = 22.36 feet
Therefore, Peter would need a vacuum hose that is approximately 22.36 feet long to reach any part of the pool surface from the outlet.
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Provide an appropriate response. Describe the steps involved when using stratified random sampling. What are the advantages of this sampling method? Select one: a. Obtain a random sample in which every member of the population has an equal chance of entering the sample: Number the population members from 1 to N. Use a random number table to obtain a list of n random numbers between 1 and N. Select the population members corresponding to those n numbers and interview all n sample members. b. The population is first divided into subpopulations. From each stratum, a simple random sample is obtained whose size is proportional to the size of the subpopulation. The advantage of this method is that it ensures that no subpopulation is missed. c. Sampling in naturally occurring groups can save time when members of the population are widely scattered geographically. The disadvantage is that members of a group may be more homogeneous than the members of the population as a whole and may not mirror the entire population. d. None of these is correct.
The appropriate response is B. When using stratified random sampling, the population is first divided into subpopulations or strata.
From each stratum, a simple random sample is obtained whose size is proportional to the size of the subpopulation. The advantage of this method is that it ensures that no subpopulation is missed, and it allows for more precise estimation of population characteristics within each stratum.
b. The population is first divided into subpopulations (strata). From each stratum, a simple random sample is obtained whose size is proportional to the size of the subpopulation. The advantage of this method (stratified random sampling) is that it ensures that no subpopulation is missed, and it can lead to more precise estimates as it accounts for the variability within each stratum.
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The sales tax rate is 5%. If Abdul buys a wheelbarrow priced at $79, how much tax will he
pay?
Answer:
$3.95Step-by-step explanation:
GivenPrice = $79,Sales tax = 5%.SolutionFind 5% of $79:
79 * 5/100 = 395/100 = 3.95Answer:
Abdul must pay $ 3.95.
Step-by-step explanation:
Now we have to,
→ find the amount of tax he must pay.
Then the amount will be,
→ (79/100) × 5
→ 0.79 × 5 = $ 3.95
Hence, he must pay $ 3.95.
Determine whether or not the below series converges or diverges. If it converges, then give rea- sons as to why it converges and find its value. If it diverges, then give reasons as to why it diverges and tell the nature of its divergence. That is, if it diverges, does it diverge to infinity, or does it oscillate and never reaches a definite end point? 1 k(k + 2) k=1
The sum of the given series is n(n+1)(n+4) / 3."
Series converges or diverges The given series is ∑1 k(k + 2) k=1.
To determine whether or not the given series converges or diverges, one can use the comparison test which is given as follows:
Let aₙ and bₙ be two series such that 0 ≤ aₙ ≤ bₙ for all n and the series ∑bₙ is convergent.
Then, the series ∑aₙ is convergent.
The given series can be compared to the series ∑1 k² k=1,
since k(k + 2) ≤ k² for all k.
Hence,∑1 k(k + 2) k=1 ≤ ∑1 k² k=1.
Here, ∑1 k² k=1 is a convergent series with the sum given by the formula ∑1 k² k=1
= n(n+1)(2n+1) / 6.
Therefore, by the comparison test, the series ∑1 k(k + 2) k=1 is also convergent.
Moreover, to find the sum of the given series, we can simplify the expression k(k + 2) as k² + 2k.
Hence, the series can be written as ∑k² + 2k k=1.
Using the formula for the sum of first n squares, we have ∑k² k=1 = n(n+1)(2n+1) / 6,and using the formula for the sum of first n natural numbers, we have ∑k k=1 = n(n+1) / 2.
Hence, ∑k² + 2k k=1 = ∑k² k=1 + 2 ∑k k=1= n(n+1)(2n+1) / 6 + n(n+1) = n(n+1)(n+4) / 3.
Therefore, the sum of the given series is n(n+1)(n+4) / 3.
The given series is ∑1 k(k + 2) k=1.
We can use the comparison test to determine whether or not the given series converges or diverges.
We compare it to the series ∑1 k² k=1,
since k(k + 2) ≤ k² for all k.
Hence, ∑1 k(k + 2) k=1 ≤ ∑1 k² k=1. Here, ∑1 k² k=1 is a convergent series with the sum given by the formula ∑1 k² k=1 = n(n+1)(2n+1) / 6.
Therefore, by the comparison test, the series ∑1 k(k + 2) k=1 is also convergent.
Moreover, to find the sum of the given series, we can simplify the expression k(k + 2) as k² + 2k.
Hence, the series can be written as ∑k² + 2k k=1. Using the formula for the sum of first n squares,
we have ∑k² k=1 = n(n+1)(2n+1) / 6, and using the formula for the sum of first n natural numbers,
we have ∑k k=1 = n(n+1) / 2.
Hence, ∑k² + 2k k=1 = ∑k² k=1 + 2 ∑k k=1= n(n+1)(2n+1) / 6 + n(n+1)
= n(n+1)(n+4) / 3.
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The base of a triangle is 20m and its area is 250m.What is the height of the triangle
Answer:
the height of the triangle is 25
Answer:
height = 25 m
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = \(\frac{1}{2}\) bh ( b is the base and h the height )
Here A = 250 and b = 20 , then
\(\frac{1}{2}\) × 20 × h = 250 , that is
10h = 250 ( divide both sides by 10 )
h = 25 m
What are the coordinates of(D0. 25∘rx-axis)(ABCD) for A(2, 6), B(0, 0), C(-5, 8), and D(-2, 10)?
(express ordered pairs as decimal)
The coordinates of point D 0.25 x-axis for the points A(2, 6), B(0, 0), C(-5, 8), and D(-2, 10) are (-2, -2.5) when point D is reflected across the x-axis. This is obtained by negating the y-coordinate of point D and keeping the x-coordinate the same.
To find the coordinates of point D 0.25 x-axis, we need to reflect point D across the x-axis. This will result in the y-coordinate of point D being negated while the x-coordinate remains the same.
The coordinates of point D are (-2, 10), so when we reflect it across the x-axis, we get the new coordinates:
D 0.25 x-axis = (-2, -10/4) = (-2, -2.5)
Therefore, the coordinates of point D0.25∘rx-axis for the given points A, B, C, and D are (-2, -2.5).
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Do the following angle conversions Keepanswer Exact! No Decional? a) Convert \( -75^{\circ} \) to radians
Converting \(\( -75^\circ \)\) to radians results in \(\( -\frac{5\pi}{12} \)\) . This conversion is achieved by multiplying the given degree measure by the conversion factor \(\( \frac{\pi}{180} \)\).
To convert degrees to radians, we use the conversion factor \(\( \frac{\pi}{180} \)\) . In this case, we need to convert \(\( -75^\circ \)\) to radians. We multiply \(\( -75 \)\) by \(\( \frac{\pi}{180} \)\) to obtain the equivalent value in radians.
\(\( -75^\circ \times \frac{\pi}{180} = -\frac{5\pi}{12} \)\)
Therefore, \(\( -75^\circ \)\) is equivalent to \(\( -\frac{5\pi}{12} \)\) in radians. It is important to note that when performing angle conversions, we maintain the exactness of the answer without rounding it to decimal places, as requested.
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Which characteristics do the functions have in common? Select two options.
range
domain
minimum
x-intercept
y-intercept
Range and y intercept are two characteristics they have in common
The characteristics that the functions have in common are the range and the y-intercept.
What is a function?A function refers to a mathematical rule. It is a mathematical operation to be carried out on variables.
For the two functions shown, the characteristics that the functions have in common are the range and the y-intercept.
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HELP PLEASE WILL MARK BRAINLIEST. Leo walk 7km outh then 12km eat. How far i he from the tarting point
Leo is approximately 13.928 km away from the starting point.
Given that Leo walked 7 km south and then 12 km east, we need to determine the distance from the starting point,
To determine the distance from the starting point, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
In this case, the distance Leo walked south forms one side of a right triangle, and the distance he walked east forms the other side. The distance from the starting point will be the length of the hypotenuse.
Using the Pythagorean theorem, we can calculate the distance from the starting point as follows:
Distance² = (7 km)² + (12 km)²
Distance² = 49 km² + 144 km²
Distance² = 193 km²
Taking the square root of both sides gives us:
Distance = √(193)
Distance ≈ 13.928 km
Therefore, Leo is approximately 13.928 km away from the starting point.
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Complete question =
Leo walk 7km south then 12km east. How far is he from the starting point?
What is the sum of these two numbers?
2 + 4 = _?
Thank you guys so much!
Answer: 6
Step-by-step explanation: you could also multiply, 2 x 2 would be 4 + 2 more would be 6
prove that √-2 is irrational using strong induction
Using strong induction, we can prove that the square root of -2 is irrational by showing that it cannot be expressed as a fraction of coprime odd integers.
To prove that √-2 is irrational using strong induction, we need to show that for any natural number n, if the square root of -2 can be expressed as a fraction a/b, where a and b are coprime integers, then a and b must be odd.
We can start by using the base case, n = 1. Assume that √-2 can be expressed as a fraction a/b where a and b are coprime integers. Then, we have
√-2 = a/b
Squaring both sides gives
-2 = a^2/b^2
Multiplying both sides by b^2 gives
-2b^2 = a^2
This implies that a^2 is even, and therefore a is also even. We can express a as 2k for some integer k, which means
-2b^2 = (2k)^2
Simplifying, we get
-2b^2 = 4k^2
Dividing both sides by -2 gives
b^2 = -2k^2
This implies that b^2 is even, which means that b is also even. However, this contradicts our assumption that a and b are coprime integers. Therefore, √-2 cannot be expressed as a fraction a/b where a and b are coprime integers.
Now, let's assume that for all n ≤ k, the square root of -2 cannot be expressed as a fraction a/b where a and b are coprime integers with a and b odd. We want to prove that this also holds for n = k+1.
Assume that √-2 can be expressed as a fraction a/b where a and b are coprime integers with a and b odd. Then, we have
√-2 = a/b
Squaring both sides gives
-2 = a^2/b^2
Multiplying both sides by b^2 gives
-2b^2 = a^2
This implies that a^2 is even, and therefore a is also even. We can express a as 2k for some integer k, which means
-2b^2 = (2k)^2
Simplifying, we get
-2b^2 = 4k^2
Dividing both sides by -2 gives
b^2 = -2k^2
This implies that b^2 is even, which means that b is also even. However, this contradicts our assumption that a and b are coprime integers with a and b odd. Therefore, √-2 cannot be expressed as a fraction a/b where a and b are coprime integers with a and b odd.
By strong induction, we have proven that for any natural number n, the square root of -2 cannot be expressed as a fraction a/b where a and b are coprime integers with a and b odd. Therefore, √-2 is irrational.
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. A pick-up truck is rented from We-Rent-You-Pay Rentals. The basic charge including taxes and unlimited mileage is $97.95 per day.
a. (0.5) Define a variable for this situation with a specific statement of the form "let 'name of a variable' = a verbal description of what the variable represents." For example, unrelated to this question: Let x = the number of units produced.
b. (0.5) Let C represent the rental cost. Write a mathematical expression for the cost, C, involving the variable you defined in part a. For example, unrelated to this question: If each unit produced is sold for $15 and R represents the revenue generated, then the revenue is given by R(x) = 15x.
c. (1) Suppose the truck was rented and the total rental cost was $783.60. For how many days was the truck rented? Show work and write a complete sentence answer. Round to the nearest whole day if necessary.
2. (1) Determine the slope-intercept form of the equation of the line satisfying ƒ(-2) = 5 and f(2) = 21.
3. (1) What is the slope of a line perpendicular to the line in question 2?
4. (1) Solve: 77x+6(2x-5) < 12(x-1)+9x. Write the answer in interval notation.
5. (1) A right triangle has one leg with length 5.7 feet and a hypotenuse with length 13.4 feet. Determine the length of the other leg to the nearest tenth of a foot. Write a complete sentence answer and include the units.
1. a. Let d = the number of days the truck is rented.
b. C(d) = 97.95d
c. If the total rental cost was $783.60, we can set up the equation:
97.95d = 783.60
Solving for d:
d = 783.60 / 97.95 ≈ 8
Therefore, the truck was rented for approximately 8 days.
2. We are given two points on the line: (-2, 5) and (2, 21).
Using the slope-intercept form of a linear equation (y = mx + b), we need to find the slope (m) and the y-intercept (b).
m = (21 - 5) / (2 - (-2)) = 16 / 4 = 4
Using the point-slope form of the equation (y - y₁ = m(x - x₁)), we can choose one of the points to substitute:
y - 5 = 4(x - (-2))
y - 5 = 4(x + 2)
y - 5 = 4x + 8
y = 4x + 13
Therefore, the slope-intercept form of the equation is ƒ(x) = 4x + 13.
3. The slope of a line perpendicular to a given line is the negative reciprocal of its slope.
The given line has a slope of 4, so the slope of a line perpendicular to it is -1/4.
4. Solve: 77x + 6(2x - 5) < 12(x - 1) + 9x
Expanding and simplifying both sides:
77x + 12x - 30 < 12x - 12 + 9x
89x - 30 < 21x - 12
Combining like terms:
70x < 18
Dividing both sides by 70 (since 70 is positive):
x < 18/70
Simplifying the fraction:
x < 9/35
The solution in interval notation is (-∞, 9/35).
5. In a right triangle, the Pythagorean theorem states that the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.
Using this theorem, we have:
a² + b² = c²
(5.7)² + b² = (13.4)²
32.49 + b² = 179.56
b² = 179.56 - 32.49
b² = 147.07
b ≈ √147.07
b ≈ 12.1
Therefore, the length of the other leg is approximately 12.1 feet.
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What is the range of 10,13,14,15,17,18,20,30,35
Given
The data is given
10,13,14,15,17,18,20,30,35
He bought a pair of boots that cost 10 and spent the rest on hats that cost 8 each?
Answer:
what is the question?
Step-by-step explanation:
hhdhejrhdeuie
Given f(x) =x^3-7x^2+36
Draw the graph of f and clearly indicate all intercepts and coordinates of turning points
A function assigns the value. The x-intercepts of the function are -2, 3, and 6. The y-intercept of the function is 36.
What is a Function?A function assigns the value of each element of one set to the other specific element of another set.
In the given function, if the value of x is kept as 0, then you will get the value of the y-intercept of the function as,
f(x) = x³- 7x² + 36
f(0) = (0)³ - 7(0)² + 36
f(0) = 36
The value of y is kept as 0, then you will get the x-intercept of the function,
f(x) = x³- 7x² + 36
0 = x³- 7x² + 36
0 = (x+2)(x-3)(x-6)
x = -2, 3, 6
Hence, the x-intercepts of the function are -2, 3, and 6. The y-intercept of the function is 36.
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After taking many samples of size n=4 of the length of a pipe, mean and standard deviation were determined to be 0.973 and 0.003 meter, respectively. The process is in good statistical control and the individual lengths seem to follow normal distribution.
(a) What percent of the pipe lengths would fall outside specification limits of 0.965±0.007 meter?
(b)What is the effect on the percent conforming to specifications of centering the process?
(c)What would the effect be if mean = 0.973 meter and the process standard deviation were reduced to 0.0025 meter?
Represent each situation above by providing a graphical representation.
(a) To determine the percentage of pipe lengths falling outside the specification limits of 0.965 ± 0.007 meter, we need to calculate the area under the normal distribution curve outside this range. (b) Centering the process would shift the mean of the distribution, but the effect on the percentage conforming to specifications depends on the width of the specifications and the shape of the distribution. (c) If the mean remains at 0.973 meter and the process standard deviation is reduced to 0.0025 meter, it would result in a narrower distribution and potentially increase the percentage conforming to specifications.
(a) To find the percentage of pipe lengths falling outside the specification limits, we need to calculate the area under the normal distribution curve outside the range of 0.965 ± 0.007 meter. This can be done by finding the z-scores corresponding to the lower and upper limits, and then using a standard normal distribution table or software to determine the probabilities. The percentage would be the sum of the probabilities outside the range.
(b) Centering the process would shift the mean of the distribution, but the effect on the percentage conforming to specifications depends on the width of the specifications and the shape of the distribution. If the process is centered within the specifications, it would increase the percentage conforming to specifications.
(c) If the mean remains at 0.973 meter and the process standard deviation is reduced to 0.0025 meter, it would result in a narrower distribution. A narrower distribution means fewer values would fall outside the specifications, potentially increasing the percentage conforming to specifications. The graphical representation would show a tighter and more concentrated distribution around the mean value.
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(h º g º f)(x)?
2x3 + 1
8x3 + 9x + 1
8x3 + 12x2 + 6x + 1
8x3 + 24x2 + 24x + 8
Answer:
First one is A. \(2x^{3} + 1\)
Second one is D. \(8x^{3} + 24x^{2} +24x + 8\)
Step-by-step explanation:
Edge 2020
Answer:
d on edge
Step-by-step explanation:
A consignment shop is a store that sells used items that people bring in a consignment shop owner bought a used dress from a woman for $30 he put a dress on sale for $50 by what percent did he mark up the price of the dress?
The consignment shop owner marked up the price of the dress by 66.67%.
The markup percentage can be calculated by dividing the difference between the selling price and the cost price by the cost price and then multiplying the result by 100 to get a percentage. In this case, the difference between the selling price ($50) and the cost price ($30) is $20. Dividing $20 by $30 gives us 0.6667, which when multiplied by 100 gives us 66.67%. Therefore, the consignment shop owner marked up the price of the dress by 66.67%.
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10 POINTS
According to a recent survey, 47 percent of the people living in a certain region carry a certain genetic trait. People from the region will be selected at random one at a time until someone is found
who carries the genetic trait. Let the random variable Grepresent the number of people selected to find one person who carries the genetic trait. On average, how many people from the region
will need to be selected to find one person who carries the genetic trait?
Answer:
0.47
Step-by-step explanation:
47% = to 0.47
Please answer correctly! I will mark you as Brainliest
Answer:
424.3m³
Step-by-step explanation:
I'm sorry, I don't have any proof because I used the go.ogle calculator, you're just gonna have to trust me on this one
Solve the system of equations:
2x + 3y = 33
Answer:
x= --3/2y + 33/2
Step-by-step explanation: