Answer:
19.2 mph
Step-by-step explanation:
Given a bike wheel with a radius of 21 inches turning at 154 rpm, you want to know the speed of the bike in miles per hour.
DistanceA wheel with a radius of 21 inches will have a diameter of 42 inches, or 3.5 feet. In one turn, it will travel ...
C = πd
C = π(3.5 ft) . . . . per revolution
In one minute, the bike travels this distance 154 times, so a distance of ...
(3.5π ft/rev)(154 rev/min) = 1693.318 ft
SpeedThe speed is the distance divided by the time:
(1693.318 ft)/(1/60 h) × (1 mi)/(5280 ft) ≈ 19.2 mi/h
__
Additional comment
We could use the conversion factor 88 ft/min = 1 mi/h.
Bike wheel diameters are typically 26 inches or less, perhaps 29 inches for road racing. A 42-inch wheel would be unusually large.
On the other hand, the chainless "penny farthing" bicycle has a wheel diameter typically 44-60 inches. It would be real work to pedal that at 154 RPM.
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the speed of the bike in miles per hour is;[51408π/63360]/[1/60] mph= 30.9 mph (approx)Hence, the linear speed of the bike, in miles per hour, is 30.9 mph.
To find the linear speed of the bike, in miles per hour, given the radius of the wheel of the bike as 21 inches and the wheel revolving at 154 revolutions per minute, we can use the formula for the circumference of a circle as;C = 2πrWhere r is the radius of the circle and C is the circumference of the circle.From the given information, we can find the circumference of the wheel as;C = 2π(21) inches= 132π inchesTo find the distance traveled by the bike per minute, we can multiply the circumference of the wheel by the number of revolutions per minute;Distance traveled per minute = 154 × 132π inches= 51408π inchesTo find the speed of the bike in miles per hour, we need to convert the units of distance from inches to miles and the units of time from minutes to hours as;1 inch = 1/63360 miles (approx) and1 minute = 1/60 hours (approx)Therefore, the speed of the bike in miles per hour is;[51408π/63360]/[1/60] mph= 30.9 mph (approx)Hence, the linear speed of the bike, in miles per hour, is 30.9 mph.
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Suppose a license plate must contain 3 letters followed by 4 digits. Letters and digits can be repeated. How many different license plates are possible that end with 5 as the last digit?
There are 17,576,000 possible license plates consisting of 3 letters followed by 4 digits.
Fundamental Counting Principles:
The fundamental counting principle is a rule used to count the total number of possible outcomes in a situation.
When something can be done m different ways and n different ways,
there are then \(m*n\) ways to accomplish both.
Based on the given information, since the letters and digits may be repeated, there are:
26 ways to fill in the first letter
26 ways to fill in the second letter
26 ways to fill in the third letter
10 ways to fill in the first digit
10 ways to fill in the second digit
10 ways to fill in the third digit and
1 way to fill in the first digit (as the last digit end with 5)
Thus, by Fundamental Principle of Counting, there are 17,576,000 possible license plates.
26 x 26 x 26 x 10 x 10 x 10 x 1 = 17,576,000
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PLS PLS PLS HELP 100 POINTS no scamming
Answer:
parallelogram:
Hexagon:
Triangle:
Step-by-step explanation:
Answer:
uh what is scamming?????
Help please question 5
The graph K must represent an investment that was compounded continuously because investments that are compounded continuously increase at a faster rate than investments that use either simple interest or are compounded monthly.
How to determine the correct statement about the future value and its graph?In Mathematics and Financial accounting, continuous compounding interest can be determined or calculated by using this mathematical equation (formula):
\(A(t) = P_{0}e^{rt}\)
Where:
A(t) represents the future value.P₀ represents the principal.r represents the interest rate.t represents the time measured in years.By critically observing the given graph, we can reasonably infer and logically deduce that the graph with line K represent an investment that was compounded continuously because the principal (initial amount of money) increases at a faster rate
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
For every 5 minutes that Scarlett plays on the computer, she plays outside for 12 minutes. What is the ratio of minutes Scarlett plays on the computer to minutes she plays outside?
Answer:
5:12
Step-by-step explanation:
because of the new wife
Please help me !! would appreciate
The answers that describe the quadrilateral DEFG area rectangle and parallelogram.
The correct answer choice is option A and B.
What is a quadrilateral?A quadrilateral is a parallelogram, which has opposite sides that are congruent and parallel.
Quadrilateral DEFG
if line DE || FG,
line EF // GD,
DF = EG and
diagonals DF and EG are perpendicular,
then, the quadrilateral is a parallelogram
Hence, the quadrilateral DEFG is a rectangle and parallelogram.
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what is the ratio ηf/ηi, where ηf is the final surface charge density?
The ratio of the final surface charge density (ηf) to the initial surface charge density (ηi) is given by 3.68 * \(Q_i / (A_i \times A_i).\)
To understand the concept and solve this problem, we need to consider the relationship between surface charge density, area, and charge. Surface charge density (σ) is defined as the charge (Q) per unit area (A). Mathematically, we can express this relationship as σ = Q/A.
Let's assume the initial area of the irregular shape is \(A_i\), and the final area after each dimension is reduced is \(A_f\). Since each dimension (x and y) is reduced by a factor of 3.68, we can write the relationship between the initial and final areas as:
\(A_f = (1/3.68) \times A_i\)
Now, let's consider the relationship between charge and area. Since the charge remains constant for a given area, we can express it as \(Q_i = Q_f\), where \(Q_i\) is the initial charge and \(Q_f\) is the final charge.
Since the charge remains constant, the ratio of the surface charge densities can be expressed as:
ηf/ηi = \(\sigma _f/\sigma _i = Q_f/A_f / Q_i/A_i\)
Substituting the expressions for area into the equation, we have:
ηf/ηi = \(Q_f/A_f / Q_i/A_i = Q_f / (A_f * Q_i) * (A_i / Q_i)\)
Canceling out the \(Q_i\) terms, we get:
ηf/ηi = \(Q_f / (A_f * Q_i) * (A_i / Q_i) = Q_f / (A_f * A_i)\)
Since \(Q_i = Q_f\), we can simplify further:
ηf/ηi = \(Q_f / (A_f * A_i) = Q_i / (A_f * A_i)\)
Now, substituting the expressions for area into the equation, we have:
ηf/ηi = \(Q_i / (A_f * A_i) = Q_i / ((1/3.68) * A_i * A_i)\)
Simplifying, we find:
ηf/ηi = 3.68 x \(Q_i / (A_i \times A_i).\)
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Complete Question:
The irregularly shaped area of charge in the figure has surface charge density ηi. Each dimension (x and y) of the area is reduced by a factor of 3.68.
What is the ratio ηf/ηi where ηf is the final surface charge density?
____A mail clerk is making deliveries along a long straight hallway. The clerk's velocity is modeled in meters/min by v(t) = 4π sin(). If the clerk starts at one end and takes 13 minutes to finish deliveries, how many 3 meters did the clerk walk during the132 minutes?
The clerk walked approximately 0.371π meters during the 132 minutes of delivering along the hallway.
To find the number of 3-meter segments the clerk walked during the 132 minutes, we need to integrate the velocity function over the given time interval.
v(t) = 4π sin(t)
The clerk starts at one end and takes 13 minutes to finish deliveries, so the time interval is from t = 0 to t = 13.
To calculate the distance walked, we integrate the absolute value of the velocity function over the given interval:
Distance = ∫[0, 13] |v(t)| dt
Let's calculate the integral:
Distance = ∫[0, 13] |4π sin(t)| dt
Since the absolute value of sin(t) is positive for the given interval, we can simplify the integral to:
Distance = 4π ∫[0, 13] sin(t) dt
Using the integral of sin(t), which is -cos(t), the expression becomes:
Distance = -4π cos(t) |[0, 13]
Now we can evaluate the integral over the given interval:
Distance = -4π (cos(13) - cos(0))
Simplifying further:
Distance = -4π (cos(13) - 1)
Calculating the value:
Distance ≈ -4π (0.907 - 1)
Distance ≈ -4π (-0.093)
Distance ≈ 0.371π meters
Therefore, the clerk walked approximately 0.371π meters during the 132 minutes.
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will mark brainliest if correct
Answer:
Distributive property
Step-by-step explanation:
The 2 shares a product/multiplies with both the 5 and 7.
what is the answer to this (-¾)(½)(-⅔) = in simplest form please answer ASAP
Answer:
1/4
Step-by-step explanation:
cross both 3s and 2s. 1/4 is left.also -×- =+. so it's +1/4
Polygons in the coordinate
In order to know if a triangle is a right triangle on a coordinate plane, you can find the lengths of all three sides of the triangle using the distance formula and apply the Pythagorean theorem.
How to know if it's a triangleFind the lengths of the three sides of the triangle using the distance formula.
Once you have the lengths of the sides, check if any of the three sides satisfy the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides. In other words, if a² + b² = c², where c is the longest side, then the triangle is a right triangle.
If one of the sides satisfies the Pythagorean theorem, then the triangle is a right triangle.
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From 126 ounces to 48 ounces.
Answer:
78.
Step-by-step explanation:
If your asking how much of a difference/ Subtract.
if a polynomial function is in factored form, what would be a good first step in order to determine the degree of the function?
To determine the degree of a polynomial function given in factored form, a good first step is to count the highest power of the variable in the factored expression.
In factored form, a polynomial function is expressed as the product of linear factors or irreducible quadratic factors.
Each factor represents a root or zero of the function.
The degree of a polynomial is determined by the highest power of the variable in the expression.
To find the degree of the function, examine each factor in the factored form.
For linear factors, the degree is 1 since the highest power of the variable is 1.
For irreducible quadratic factors, the degree is 2 since the highest power of the variable is 2.
By observing the highest power in the factored expression, you can determine the degree of the polynomial function.
If the highest power is 1, the polynomial has a degree of 1 (linear function). If the highest power is 2, the polynomial has a degree of 2 (quadratic function). And so on.
It's important to note that the degree of a polynomial corresponds to the highest power of the variable in the expression and not the number of factors.
The number of factors indicates the number of roots or zeros of the polynomial, but it doesn't determine the degree.
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helpppp plsss What shape is created by the rotation around the given axis "a"? Prism Cone Pyramid Sphere
Answer:
Option (2)
Step-by-step explanation:
From the picture attached,
When the given shape is rotated about the axis 'a',
Triangle ABC forms a 3-D figure of a cone.
Segment AB is the diameter of the circular base and CD is the height of the cone.
Therefore, Option (2) CONE will be the answer.
can sum1 one plz help meee
The population of China is at least 1,000,000, 000 people.
Inequality
Graph:
Answer:
Population is > 1,000,000, 000
Step-by-step explanation:
Someone please help me
Answer:
Step-by-step explanation:
cone: attached picture below
composite shape: To calculate the area of a composite shape you must divide the shape into rectangles, triangles or other shapes you can find the area of and then add the areas back together. You may have to calculate missing lengths before finding the area of some of the shapes.
ratio: not sure about that question sorry
last question: i have no idea what it is about because my device won't open the picture sorry
though i have answered 2 question of yours
have a great evening
Answer:
ConeSurface area:
A = πr(r + l) r = √(10² - 8²) = √36 = 6A = 3.14(6)(6 + 10) = 301.44#1A = 25π, C = ?A = πr² ⇒ 25π = πr² ⇒ r² = 25 ⇒ r = 5C = 2πr = 2*3.14*5 = 31.4#2A = 5*7 + (5 - 2)*4 + 1/2*4*(6 - (5 - 2)) = 35 + 12 + 6 = 53#10Scale factor
k = 3/4Area is a function of two dimensions, each has k applied
The ratio of areas is the k² = (3/4)² = 9/16Option C
#6Volume of prism:
V = Bh = 1/2(8*5)*6 = 120Volume of pyramid:
V = 1/3Bh = 1/3(8*5)*9 = 120Option A, same volume
#7Ratio of areas:
20/45 = 4/9Scale factor is:
k² = 4/9k = √4/9k = 2/3We shuffle a deck of 52 cards and then flip them one by one. Let X denote the number of times when we see three number cards in a row (the numbered cards are 2, 3, . . . , 10). Find the expected value of X.
The expected value of X is 100/663.
Let's consider the sequence of 3 number cards as an individual block, then we can see that there are 10 such blocks in the deck (2-3-4, 3-4-5, ..., 9-10-J, 10-J-Q), and there are 39 non-number cards in the deck.
Now, we can consider flipping the cards one by one and keep track of the number of times we see the beginning of a new block of 3 number cards. There are 50 positions in the deck where a block of 3 number cards could begin (the first 2 cards cannot start a block and the last 2 cards cannot end a block). For each position, the probability of seeing the beginning of a new block is given by:
P(new block) = P(first card is a number) x P(second card is the next number) x P(third card is the next number) = 10/52 x 4/51 x 4/50 = 2/663
Therefore, the expected value of X is:
E(X) = P(new block at position 1) + P(new block at position 2) + ... + P(new block at position 50) = 50 x P(new block) = 50 x 2/663 = 100/663
So, the expected value of X is 100/663.
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Can y’all help me out with this one I didn’t do it right igs
Step-by-step explanation:
We have a dilation because we are multiplying the pre image by some constant,
Since dilations doesn't preserve side length, they are a non rigid motion.
According to the rule, we multiply the x values by 3 and the y values by 2.
So our new points are
A'(9,10)
B'(15,6)
C'(6,4)
in the late 1840s, even though the california indian population had declined greatly, it still was far larger than the californio population. which pair of approximate figures is most accurate for this time period? fifty thousand indians and fifteen thousand californios one hundred thousand indians and seven thousand californios three hundred thousand indians and seven thousand californios one hundred thousand indians and fifteen thousand californios
One hundred thousand Indians and fifteen thousand Californios are the most accurate pair of approximate figures for the late 1840s in California
The indigenous population of California was estimated to be around 100,000 in the late 1840s, while the Californio population, which consisted of Spanish-speaking settlers, was estimated to be around 15,000.
The secularization law lead the Indians to grow crops, herd livestock, and weave clothes, live in the lands to where they migrated. Later the lands under the mission are distributed or sold for less cost to the families and friends of government officers. This mission plan happened in 1840s.
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Complete the following statement: In two-dimensional motion in the x-y plane, the x part of the motion and the y part of the motion are independent...
The completed statement based on two-dimensional motion in the x-y plane can be presented as follows;
The two-dimensional motion in the x-y plane, the x part of the motion and the y part of the motion are independent, whether or not there is an acceleration in any direction. The correct option is therefore;
D) Whether or not there is an acceleration in any direction
How can two-dimensional motion be analyzed?Two-dimensional motion in the x-y plane can be analyzed by separating them into its horizontal (x) and vertical (y) components, and analyze each component using the one dimensional equations of motion.
The meaning of the motion on the x-y plane is that the x-direction motion of an object exclusive or excludes the effect of the motion of the object in the y-direction, vis a vis, the y-direction motion.
The horizontal and vertical components of the motion can be analyzes individually or by themselves, by making use of the equations of motion for a one-dimensional motion, whether or not there is an acceleration in any direction as the acceleration are also evaluated using one dimensional equations.
The possible options in the question from a similar question on the internet are;
A) When there is no acceleration in any direction
B) When there is no acceleration in one direction
C) Only when an acceleration is present in both directions
D) Whether or not there is an acceleration in either direction
E) Only when the acceleration is in the y-direction
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60>5(6-2x) ok help me so I can get an answer
Inequalities are used to represent unequal expressions
The solution to the inequality is: \(x > -3\)
How to determine the inequality solutionThe inequality is given as:
60>5(6-2x)
Rewrite the inequality properly as:
\(60>5(6-2x)\)
Divide both sides of the inequality by 5
\(12>6-2x\)
Subtract 6 from both sides of the inequality
\(6>-2x\)
Divide both sides of the inequality by -2
\(-3
Rewrite the inequality as
\(x > -3\)
Hence, the solution to the inequality is: \(x > -3\)
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Can anyone help me?
Joseph Cheyenne is earning an annual salary of $24,895. He has been offered the job in the ad. How much more would he earn per month if he is paid:
a. the minimum?
b. the maximum?
The correct option will be the option b i.e., the maximum.
It is given that Joseph is earning an annual salary of $24,895. Later he is offered with an ad.
We have to choose the correct option i.e., the minimum or the maximum he would earn per month if he is paid.
What would be the value if x is added to 40 ?
The value will be 40 + x.
Let's assume Joseph is paid $ x for the ad.
Annual salary of Joseph $24,895.
The salary which he will get after the ad offer will be ;
= 24895 + x
So , the annual salary get's increased after the addition of salary of ad offer.
Thus , the maximum Joseph would earn per month and the correct option is option b.
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PLEASE HELP
Name the reciprocal you will use to multiply
-6/5k=12
Answer:
-5/6
Step-by-step explanation:
The reason why the reciprocal is -5/6 is because to isolate the variable with a fraction attached is to multiply it by swapping the numerator and denominator. Also making sure that if the number is a negative, to multiply the number by another negative to cancel it out.
Solve: 8 + (7 + 1) ^2 ÷ 4 ⋅ 1/2^4
Help me with this quick please and quick
Now that we additionally know the point (3, -1) through which the new line should pass, we may express a line using the point-slope form: y = - 5 / 3 x + 4.
How to find the calculation?The line we are attempting to analyze must have the same slope as this given line because it is parallel to the one provided by the common equation 5x + 3y = 6. Using slope-intercept notation, let's solve this equation to determine the slope:5x + 3y = 6
3y = -5x + 6
y = -5/3x + 6 / 3
y = - 5 / 3x + 2
If our line is to be parallel to the supplied line, its slope must likewise be "-5/3."Now that we additionally know the point (3, -1) through which the new line should pass, we may express a line using the point-slope form:y - y0 = m(x - x0)
y - (-1) = -5 / 3 (x - 3)
y + 1 = -5 / 3 x + 5
y = - 5 / 3 + 4.
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If 8 people consisting of 4 couples are randomly arranged in a row, find the probability that no person is next to their partner.
The Probability that no person is next to their partner is 104/105.
Probability of an event E represented by P(E) can be defined as (The number of favorable outcomes )/(Total number of outcomes).
Permutations is defined as arrangement of elements/objects in a particular way.
According to the question ,
8 people can be arranged in 8! ways = 40320ways
First let us find the probability that person is next to their partner.
4 couples can be arranged in 4! ways
and the couple itself can be arranged in 2! ways
Since there are 4 couples ,
Number of arrangement = \(4!(2!)^{4}\)
=24x16
=384 ways
Probability that person is next to their partner = \(\frac{384}{40320} =\frac{1}{105}\)
and the probability that no person is next to their partner is \(1-\frac{1}{105} =\frac{104}{105}\).
Therefore , the probability that no person is next to their partner is \(\frac{104}{105}\).
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according to your text, which of the following is the primary source of primate endangerment today? habitat destruction human diseases social stress and dislocation use of primates for pets
Based on the text, the primary source of primate endangerment today is habitat destruction.
Habitat destruction is considered the primary source of primate endangerment based on various factors mentioned in the text. Primates, like many other species, heavily rely on their natural habitats for survival, including food, shelter, and breeding. However, human activities such as deforestation, urbanization, and land conversion for agriculture or infrastructure development have significantly reduced and fragmented primate habitats.
Habitat destruction leads to the loss of critical resources and disrupts the ecological balance necessary for primate populations to thrive. As their habitats shrink, primates face increased competition for limited resources, reduced access to food and water sources, and decreased opportunities for successful reproduction and rearing of offspring. This loss of habitat also exposes primates to increased vulnerability to predation, disease transmission, and human-wildlife conflicts.
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f(x)=(x+2)^2-6plot the vertex and the axis of symmetry of this function on the provided graph
first of all, we need to open the bracket and simplify it before proceeding to plot the graph
\(\begin{gathered} f(x)=(x+2)^2-6 \\ f(x)=x^2+4x+4-6 \\ f(x)=x^2+4x-2 \end{gathered}\)now, we plot for the equation
Given that f(x)=xcosx,0 ≤ x ≤ 5. a) Find the minimum of the function f in the specified range and correspoeting x
b) Find the maxımum of the function f in the specified range and corresponding x :
a) The minimum value of the function f(x) = xcos(x) in the range 0 ≤ x ≤ 5 is approximately -4.92, and it occurs at x ≈ 3.38.
b) The maximum value of the function f(x) = xcos(x) in the range 0 ≤ x ≤ 5 is approximately 4.92, and it occurs at x ≈ 1.57 and x ≈ 4.71.
To find the minimum and maximum values of the function f(x) = xcos(x) in the specified range, we need to evaluate the function at critical points and endpoints.
a) To find the minimum, we look for the critical points where the derivative of f(x) is equal to zero. Taking the derivative of f(x) with respect to x, we get f'(x) = cos(x) - xsin(x). Solving cos(x) - xsin(x) = 0 is not straightforward, but we can use numerical methods or a graphing calculator to find that the minimum value of f(x) in the range 0 ≤ x ≤ 5 is approximately -4.92, and it occurs at x ≈ 3.38.
b) To find the maximum, we also look for critical points and evaluate f(x) at the endpoints of the range. The critical points are the same as in part a, and we can find that f(0) ≈ 0, f(5) ≈ 4.92, and f(1.57) ≈ f(4.71) ≈ 4.92. Thus, the maximum value of f(x) in the range 0 ≤ x ≤ 5 is approximately 4.92, and it occurs at x ≈ 1.57 and x ≈ 4.71.
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find the rank of a 5 x 6 matrix a for which ax = 0 has a two-dimensional solution space.
Therefore, the rank of matrix 'a' in this case would be 5.
To find the rank of a matrix, we need to perform row reduction to obtain its row echelon form (REF) or reduced row echelon form (RREF). However, since the matrix 'a' is not provided, I cannot perform the calculations or determine its rank.
The rank of a matrix is equal to the number of non-zero rows in its row echelon form or reduced row echelon form. If the system of equations 'ax = 0' has a two-dimensional solution space, it means that the rank of matrix 'a' is less than the number of columns (6) but greater than 4 (since the solution space is two-dimensional).
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Simplify the algebraic expression by combining like terms.
Answer:
The answer for the first problem is 10x + 4 and the answer for the second problem is 14x + 6.
Step-by-step explanation:
First problem: 6x - 3 + x + 7 + 3x
First, look at the terms, match the x's with x's and numbers with numbers.6x + 3x + 1x = 10x
-3 + 7 = 4
So this makes the answer 10x + 4.
Second problem: 2(7x + 3)
All you need to do is distribute the 2 for 7x + 3, meaning that you multiply each of them by 2.
2 times 7x = 14x
2 times 3 = 6
So the answer is 14x + 6.