in the section, "Stride Rate Faster Than Usain Bolt's," what
does the author mean by "That is more than 10 times the
stride rate of Olympic Runner Usain Bolt? Use two details
from the article to support your response.
The author is comparing this stride rate to that of Olympic Runner Usain Bolt, who has a reported stride rate of 3.5 strides per second.
What is stride rate?The number of steps a runner takes in a specific length of time is referred to as stride rate and is commonly expressed in steps per second. You can figure it out by dividing the total number of steps you took during a certain amount of time by how long that time period lasted. Stride rate, which is frequently used as a gauge of running effectiveness, is impacted by a variety of variables, including running speed, terrain, and personal running form.
Hence, in the given section, the author is comparing this stride rate to that of Olympic Runner Usain Bolt, who has a reported stride rate of 3.5 strides per second.
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shirley purchased a plot of land for $19,500. the land appreciates about 3.9% each year. what is the value of the land after 5 years
Answer:
$23,302.50
Step-by-step explanation:
Express your answer as a polynomial in standard form.
f(x) = 2x - 3
g(x) = x2 - 4x +7
Find: (fog)(x)
Answer:
fog(x)= -4x+11
Step-by-step explanation:
Here,
f(x) = 2x - 3
g(x) = 2x - 4x +7 = -2x+7
fog(x)= f(-2x+7)
= 2(-2x+7)-3
= -4x+14-3
= -4x+11
Different between
20% off of
$49.99
And
20% tip on
$49.99
Answer:
$17.5 differnce
Step-by-step explanation:
20% tip on is $57.49
20% tip off is $39.99
tip on vs off when a tip is on means its
Decide whether the given ordered pair is a solution of the system.
x+y=5
X-y= 3
; (4,1)
Is the given ordered pair a solution to the given system?
A. Yes, because (4,1) makes both equations true.
B. No, because (4,1) makes neither equation true.
C. No, because (4,1) only makes the equation x + y = 5 true.
D. No, because (4,1) only makes the equation x-y = 3 true.
Answer:
A. it is true for both equations
Step-by-step explanation:
x = 4 and y = 1
sub these values into the equations
4 + 1 = 5
4 - 1 = 3
HELP PLEASE?e?e?e?E?E?E?E?EE?E?E?e
Answer:
1/2
Step-by-step explanation:
You put 5 as a numerator and then 10 as a denominator which is 5/10. But you can simplify it, so you change it to 1/2. Hope this helps!
Answer:
1/2
Step-by-step explanation:
find a solution of laplace's equation uxx uyy 0 given u(0,y)=0. u(2,y)=f(y) 0
The solution to Laplace's equation with the given boundary conditions is: u(x,y) = (f(y)/2)x + (1/π)∑[n=1 to ∞] [(f(y)-f(0))(1-cos(nπx/2))/\(n^2\)cos(nπ/2)]
The Laplace's equation uxx + uyy = 0 is a partial differential equation that describes a steady-state temperature distribution or electrostatic potential in a 2D region. The given boundary conditions specify that u(0,y) = 0 and u(2,y) = f(y), where f(y) is a given function. These conditions indicate that the solution is a function of x and y, and that the value of u is fixed on the boundaries.
To find the solution, we use separation of variables and assume that u(x,y) = X(x)Y(y). This leads to the equation X''/X = -Y''/Y = λ, where λ is a constant. The boundary conditions imply that X(0) = 0 and X(2) = 1, and the general solution is X(x) = (1/π)∑[n=1 to ∞] \(sin(nx\pi /2)cos(n\pi /2)ex^{-n^{2}\pi ^{2}y/4 }\)).To determine Y(y), we use the boundary condition u(2,y) = f(y), which gives Y(y) = f(y)/(2X(2)). Substituting X(x) and Y(y) into the general solution for u(x,y), we obtain:
u(x,y) = (f(y)/2)x + (1/π)∑[n=1 to ∞] [(f(y)-f(0))(1-cos(nπx/2))/\(n^2\)cos(nπ/2)]
This is the final solution to Laplace's equation with the given boundary conditions. It describes the temperature or potential distribution in the 2D region, and depends on the function f(y) and the Fourier series coefficients of X(x). The solution satisfies the Laplace's equation and the boundary conditions, and is unique up to a constant.
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Given the answer for part d, write an expression that will tell you the direction the robot is going if, in the course of its journey, it turns left 21 times and turns right 22 times. does the order the robot makes the turns in matter for the purpose of knowing the direction it is finally facing?
The order in which the robot makes the turns does not matter for knowing the direction it is finally facing. The number of left turns and right turns determines the net effect on the direction, regardless of their order. Therefore, the final expression for the direction the robot is going after 21 left turns and 22 right turns is: \(d^(^2^1^+^2^2^) = d^4^3.\)
To determine the direction the robot is going after 21 left turns and 22 right turns, we can evaluate the expression:
Expression: \((d * -i)^2^1 * (d * i)^2^2\)
Simplifying this expression, we get:
Expression: \(d^2^1 * (-i)^2^1 * d^2^2 * (i)^2^2\)
Since \((-i)^2^1\) and \((i)^2^2\) are equal to 1, the expression simplifies further:
Expression: \(d^2^1 * d^2^2= d^4^3\)
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Triangle WXY, with a vertex X at (3, 0), is rotated clockwise 270° about the origin.
Which of the following rotations is equivalent 270° clockwise rotation about the origin?
clockwise 270°
counterclockwise 90°
counterclockwise 360°
clockwise 90°
Answer: A rotation of 270° clockwise is equivalent to a rotation of 90° counterclockwise, because a full rotation is 360° and 270° clockwise is the same as 90° counterclockwise in terms of direction.
Therefore, the answer is: counterclockwise 90°.
Step-by-step explanation:
What is the length of the missing leg? If necessary, round to the nearest tenth
The value of the missing length is 48
How to determine the valueUsing the Pythagorean theorem, we have that;
a² = b² + c²
Given that the parameters are;
a is the hypotenuseb is the opposite sidec is the adjacent sideSubstitute the values, we get;
80² = 64² + c²
Find the squares
6400 - 4096 = c²
substract the values
c² = 2304
find the square root
c = 48
Hence, the value is 48
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in a shooting match, eight clay targets are arranged in two hanging columns of three targets each and one column of two targets. a marksman is to break all the targets according to the following rules: 1) the marksman first chooses a column from which a target is to be broken. 2) the marksman must then break the lowest remaining target in the chosen column. if the rules are followed, in how many dierent orders can the eight targets be broken?
Therefore, there are 72 different orders in which the eight targets can be broken according to the given rules.
To find the number of different orders in which the eight targets can be broken, we can consider the arrangement of the columns and the targets within each column. Since there are three targets in each of the first two columns and two targets in the third column, we can focus on the relative order of breaking the targets within each column. Let's represent the columns as follows:
Column 1: T T T
Column 2: T T T
Column 3: T T
To calculate the number of different orders, we can count the permutations of breaking the targets within each column and then multiply them together.
For Column 1, there are 3 targets, so there are 3! = 3 × 2 × 1 = 6 possible orders.
For Column 2, there are also 3 targets, so there are 3! = 6 possible orders.
For Column 3, there are 2 targets, so there are 2! = 2 possible orders.
To find the total number of different orders, we multiply the number of orders for each column:
Total number of orders = 6 × 6 × 2
= 72
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a+a+b=14 b+b+c=08 a+b+c=18 b=
The value of b in the expression is -2.
How to find the variable in an expression?a + a + b = 14
b + b + c = 8
a + b + c = 18
Therefore,
2a + b = 14
2b + c = 8
c = 8 - 2b
Hence,
a + b + 8 - 2b = 18
a - b = 18 - 8
a - b = 10
2a + b = 14
a - b = 10
3a = 24
a = 8
8 - b = 10
b = 8 - 10
b = -2
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Answer:
a = 8
b = -2
c = 12
Step-by-step explanation:
a + a + b = 14
2a + b = 14 ⇒ ( 1 )
b + b + c = 8
2b + c = 8 ⇒ ( 2 )
a + b + c = 18 ⇒ ( 3 )
First, let us make a as the subject in equation 1.
2a + b = 14
2a = 14 - b
\(a=\frac{14-b}{2} \\a = 7-\frac{b}{2}\) ⇒ ( 4 )
Let us make c as the subject in equation 2.
2b + c = 8
c = 8 - 2b ⇒ ( 5 )
Now it is clear for us that, we can replace a & c with ( 7 - b / 2 ) & ( 8 - 2b ) respectively.
And now let us solve the equation 3 to find the value of b.
\(a+b+c=18\\\\7-\frac{b}{2} +b+8-2b=18\\\\Combine\: \:like\:\: terms.\\\\\)
\(15-\frac{b}{2} -b=18\\\\\frac{15*2}{1*2} -\frac{b}{2}-\frac{b*2}{1*2}=18\\\\\frac{30}{2} -\frac{b}{2}-\frac{2b}{2}=18\\\\\frac{30-3b}{2} =\frac{18}{1} \\\\Use\:\: cross\;\: multiplication\)
\(30-3b=18*2\\\\30-3b=36\\\\30-36=3b\\\\-6=3b\\\\-2 = b\)
And now let us find the value of a
For that, let us use the equation 1. There, we can replace b with ( -2 ) to find the value of a.
\(2a+b=14\\\\2a-2=14\\\\2a = 14+2\\\\2a=16\\\\a=8\)
Now, let us find the value of c.
For that, let us take the equation 2. There also, we can replace b with -2 to find the value of c.
\(2b+c=8\\\\2*-2+c=8\\\\-4+c=8\\\\c=8+4\\\\c=12\)
a red cap fire hydrant provides 1700 liters per minute of water. how long (in minutes to the nearest minute) will it take to fill a water truck with a tank of the following dimensions: 68 inches diameter and 24 feet long? when the tank is full of water, how heavy will the water load be in pounds (lbm) to the nearest pound?
It will take approximately 8 minutes to fill the water truck, and the weight of the water load will be approximately 30,296 pounds.
How to find out how long it will take to fill the tank.First, we need to convert the dimensions of the tank from inches to feet:
68 inches diameter = 68/12 feet = 5.67 feet diameter
24 feet long = 24 feet long
Next, we can calculate the volume of the tank in cubic feet:
Volume = \(pi x (diameter/2)^2 x length\)Volume = \(3.14 x (5.67/2)^2 x 24\)Volume = \(485.15 cubic feet\)Since 1 cubic foot of water weighs 62.4 pounds, we can calculate the weight of the water in the tank in pounds:
Weight = Volume x DensityWeight = 485.15 x 62.4Weight = 30,296.16 poundsTo find out how long it will take to fill the tank, we can use the flow rate of the fire hydrant:
Flow rate = 1700 liters per minute1 liter = 0.264172 gallonsFlow rate = 1700 x 0.264172 = 449.10 gallons per minute1 gallon = 0.133681 cubic feetFlow rate = 449.10 x 0.133681 = 60.05 cubic feet per minuteFinally, we can divide the volume of the tank by the flow rate to find out how long it will take to fill the tank:
Time = Volume / Flow rateTime = 485.15 / 60.05Time = 8.08 minutesTherefore, it will take approximately 8 minutes to fill the water truck, and the weight of the water load will be approximately 30,296 pounds.
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Preston and Kim are fostering homeless kittens. Together they have fostered 47 kittens. Preston has fostered one less than one third as many kittens as Kim. How many kittens has Preston and Kim each fostered?
Answer:
Let's use variables to represent the number of kittens each person has fostered.
Let x be the number of kittens Kim has fostered.
Then, according to the problem, Preston has fostered one less than one third as many kittens as Kim, so Preston has fostered:
(1/3)x - 1
We know that the total number of kittens fostered is 47. Therefore, we can write an equation:
x + (1/3)x - 1 = 47
Simplifying and solving for x:
(4/3)x = 48
x = 36
So Kim has fostered 36 kittens.
To find out how many kittens Preston has fostered, we can substitute x = 36 into the expression we found earlier:
(1/3)x - 1 = (1/3)(36) - 1 = 11
Therefore, Preston has fostered 11 kittens.
In summary, Kim has fostered 36 kittens and Preston has fostered 11 kittens.
Answer:
36, 11
Step-by-step explanation:
Preston and Kim 47 kittens
Kim has fostered X number of kittens
Preston has fostered X/3 - 1 ( 1/3 of Kim - 1)
Total number of kitten will be Preston +Kim
X +1/3X - 1 = 47
Add 1 to both sides
X + 1/3X = 48
If 4/3X is 48, X is 36
If Kim has 36kittens, Preston fostered 47- 36 =11
To check
1/3 of 36 = 12
Subract 1 = 11
Which of the following intervals corresponds to the smallest area under a Normal curve?
a) Q1 to Q3
b) μ to μ + 3σ
c) Q1 to μ + 2σ
d) μ - σ to Q3
The area under a Normal curve depends on the interval being considered and the parameters of the Normal distribution, such as its mean and standard deviation.
To determine which of the given intervals corresponds to the smallest area under a Normal curve, we need to consider the properties of the Normal distribution. The Normal distribution is a symmetric bell-shaped curve that is completely determined by its mean and standard deviation. The mean, denoted by µ, is the center of the curve, while the standard deviation, denoted by σ, determines the spread of the curve.
Option b) µ to µ + 3σ corresponds to the interval that covers almost all the area under a Normal curve, as about 99.7% of the area lies within three standard deviations of the mean. Therefore, this option cannot correspond to the smallest area under a Normal curve.
Option a) Q1 to Q3 and option d) µ - σ to Q3 both cover more area than option c) Q1 to µ + 2σ. The interval Q1 to Q3 covers the entire middle 50% of the distribution, while the interval µ - σ to Q3 covers at least 50% of the distribution, as almost all the area lies within three standard deviations of the mean. Therefore, option c) Q1 to µ + 2σ corresponds to the smallest area under a Normal curve.
In summary, the interval corresponding to the smallest area under a Normal curve is option c) Q1 to µ + 2σ.
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How do you identify the vertical and horizontal asymptotes for rational functions?
To identify the vertical asymptotes, we have to factor the denominator. For horizontal asymptotes, we compare the degrees of the numerator and denominator.
For rational functions, there are vertical and horizontal asymptotes. To identify the vertical asymptotes, we first have to factor the denominator. After that, we should look for values that make the denominator zero. These values can be found by setting the denominator equal to zero and solving for x. The resulting x values would be the vertical asymptotes of the function.
The horizontal asymptote is the line that the function approaches as x goes towards infinity or negative infinity. For rational functions, the horizontal asymptote is found by comparing the degrees of the numerator and the denominator.
If the degree of the numerator is less than the degree of the denominator, the horizontal asymptote is y = 0. If the degree of the numerator is equal to the degree of the denominator, the horizontal asymptote is y = the ratio of the leading coefficients. If the degree of the numerator is greater than the degree of the denominator, there is no horizontal asymptote.
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I don’t get it ..............
Answer:
there is no question
Step-by-step explanation:
Answer:
same here my dude
Step-by-step explanation:
Using the recursive relation (7) and the fact that T(1/2) =r2, determine (a) L{t-1/2} (b) L{x7/2}
To solve this problem, we need to use the Laplace transform and the recursive relation (7) as follows:
(a) We know that T(1/2) = r2. Using the recursive relation (7), we can express T(s) in terms of T(s-1/2) as:
T(s) = sT(s-1/2)
Substituting s = 1 in the above equation, we get:
T(1) = 1 * T(1/2)
T(1) = T(1/2) = r2
Now, taking the Laplace transform of both sides of the recursive relation (7), we get:
L{tT(s)} = L{xT(s-1/2)}
Using the property of Laplace transform that L{t^n} = n!/s^(n+1), we can rewrite the left-hand side as:
L{tT(s)} = -d/ds L{T(s)}
Similarly, using the property of Laplace transform that L{x^n} = n!/s^(n+1), we can rewrite the right-hand side as:
L{xT(s-1/2)} = -d/ds L{T(s-1/2)}
Substituting these expressions in the Laplace transform equation, we get:
-d/ds L{T(s)} = -d/ds L{T(s-1/2)}
Simplifying the above equation, we get:
L{T(s)} = L{T(s-1/2)}
Now, using the initial condition T(1/2) = r2, we can rewrite the above equation as:
L{T(s)} = L{T(s-1/2)} = r2/s
Taking the Laplace transform of t-1/2, we get:
L{t-1/2} = 1/s^(3/2)
Multiplying this expression by L{T(s)} = r2/s, we get:
L{t-1/2} L{T(s)} = r2/s^(5/2)
The answer to part (a) is L{t-1/2} = r2/s^(5/2).
(b) To determine L{x7/2}, we can use the fact that L{x^n} = n!/s^(n+1). Thus, we have:
L{x7/2} = (7/2)!/s^(7/2+1)
Simplifying the above expression, we get:
L{x7/2} = 7!/2^7 s^(1/2)
Now, multiplying this expression by L{T(s)} = r2/s, we get:
L{x7/2} L{T(s)} = 7!/2^7 r2 s^(-3/2)
The answer to part (b) is L{x7/2} = 7!/2^7 r2 s^(-3/2).
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find the taylor polynomial of degree two approximating the given function centered at the given point. f(x) = cos(2x) at a =
To find the Taylor polynomial of degree two approximating the function f(x) = cos(2x) centered at a, we'll follow these steps:
1. Find the first three derivatives of f(x).
2. Evaluate the derivatives at the given point a.
3. Use the Taylor polynomial formula.
Step 1: Find the first three derivatives of f(x).
f(x) = cos(2x)
f'(x) = -2*sin(2x)
f''(x) = -4*cos(2x)
Step 2: Evaluate the derivatives at the given point a.
f(a) = cos(2a)
f'(a) = -2*sin(2a)
f''(a) = -4*cos(2a)
Step 3: Use the Taylor polynomial formula.
The Taylor polynomial of degree two is given by:
P₂(x) = f(a) + f'(a)*(x-a) + (1/2)*f''(a)*(x-a)²
Substitute the values we found in Step 2:
P₂(x) = cos(2a) - 2*sin(2a)*(x-a) + (-2)*cos(2a)*(x-a)²
So, the Taylor polynomial of degree two approximating the function f(x) = cos(2x) centered at a is:
P₂(x) = cos(2a) - 2*sin(2a)*(x-a) - 2*cos(2a)*(x-a)²
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Determine whether the sample is biased or unbiased. Explain You want to estimate the number of students in your school who want a football stadium to be built. You survey the first 20 students who attend a Friday night football game.
The sample is baised.
Since all the students who attended the football game will most likely want a football stadium to be built and those that do no want a stadium to be built are not proportionately represented in this sample
ABCD is a square. If LABC = (6x - 12)° and CD= (x + 15). Find the length of AD.
Answer:
AD = 32
Step-by-step explanation:
You want the length of side AD of square ABCD, when CD = (x+15) and angle ABC is (6x-12)°.
Value of xThe value of x can be found by recognizing that the measure of any angle in a square is 90°.
(6x -12)° = 90°
6x = 102 . . . . . . . . divide by °, add 12
x = 17
Measure of ADThe sides of a square are congruent, so ...
AD = CD = (x +15) = 17 +15 = 32
The length of AD is 32 units.
Identify the highlighted part of circle O shown below
Central angle
Secant
Inscribed angle
Chord
Answer:
Chord
Step-by-step explanation:
Notice that the highlighted part is the line segment that joins the points J and E on the circle, which is known as a chord.
A rectangle has a length that is 8 inches more than its width, w. The area of the rectangle is 65 square inches.
(a) Write an expression for the length of the rectangle in terms if its width, w
length=
(b) Using your answer from (a), write an equation that could be used to solve for the width, w, of the rectangle.
Equation:
Answer:
please see answers below
Step-by-step explanation:
a) if length, L, is 8 inches more than the width, W, then we can say
L = W + 8.
b) L X W = 65
(W + 8) X W = 65
W² + 8W = 65
subtract 65 from both sides:
W² + 8W - 65 = 0.
we can use completing the square, quadratic formula or factorisation to solve.
I will use completing the square.
1) put the W, not W ², in parenthesis.
2) half the coefficient (8) of W. that is 4. Put that into same parenthesis. Square the parenthesis.
3) we have (W + 4)²
4) Subtract (+4) ² = 16 from this.
5)[(W + 4) ² - 16] – 65 = 0
6) now we have (W + 4) ² – 81 =0
7) (W + 4) ² = 81
8) (W + 4) = ± √81
9) W = ± √81 - 4
10) W = ±9 - 4. W = -13 or W = 5.
lengths are widths are positive, so W must be positive. So we choose 5.
L = W + 8 = 5 + 8 = 13.
check if it works for the area of 65.
L X W = 13 X 5 = 65.
so length is 13 inches and width is 5 inches
Which fraction is the largest? 7/9 3/4 1/2 2/3
Rewrite the fractions as decimals by dividing:
7/8 = 0.7777
3/4 = 0.75
1/2 = 0.5
2/3 = 0.666
0.777 is the largest number so 7/9 is the largest fraction.
Answer: 7/9
Answer:
2/3
Step-by-step explanation:
L.C.M:36
7/9:28/36
3/4:27/36
1/2:1836
2/3:36/36
is this chart
a function
non function
neither
both?
This chart does not represent a function, as the input of -3 is mapped to two different outputs.
When does a relation represents a function?A relation represents a function if each value of the input is mapped to only one value of the output, that is, one input cannot be mapped to multiple outputs.
For a point in the standard format (x,y), we have that:
x is the input.y is the output.The meaning is that the input given by the x-coordinate is mapped to the output given by the y-coordinate.From the table, we have points (-3, 11) and (-3,12), meaning that the input of -3 is mapped to outputs of 11 and 12, hence the relation does not represent a function.
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Please help find these values.
Answer:
3. x=14° y=7
4. x=29° y=3
Step-by-step explanation:
3. this is a 45 - 45- 90 triangle
so the side is a-a-a√2 ( two sides are the same)
4y-3=10+2y+1 -- collect like terms
4y-2y=10+1+3
2y=14
y=7
find the angle of the inside triangle
180-59-90 =
31°
we know the big triangle was a 45-45-90 angle
so x+31=45
x=45-31
x=14°
4. this is a square, all sides are same
5y+3y=24
8y=24
y=3
angle is 90°
x+x+9y+5=90
we know y=3 --substitute
x+x+9(3)+5=90
2x+27+5=90
2x=90-27-5
2x=58
x=58/2
x=29
Find the integer that exceeds –5 by the same amount that 13 exceeds –1. \
Answer:
7
Step-by-step explanation:
13 exceeds - 1 by - 1 + 13 = 12, then
- 5 + 12 = 7
Answer:
Step-by-step explanation:
Answer:
7
Step-by-step explanation:
13 exceeds - 1 by - 1 + 13 = 12, then
- 5 + 12 = 7
12g + 21 and 3(4g + 7) are equivalent. true or false
Answer: TRUE
Step-by-step explanation:
12g+21 equals to 3(4g+7) because you have to multiply 3 and 4g which will equal 12g and then multiply 3 and 7 which will equal 21.
So your final answer would be 12g+21 equals to 12g+21.
Hope it helps!!
PLSSSSSSS HELPPPP I SUCK AT MATH :( its an image btw
Answer:
4= -4 97= -97
Step-by-step explanation:
Answer:
4 , 97
Step-by-step explanation:
4 is 4 numbers away from 0
97 is 97 numbers away from 0
Please help I have no idea what to do
Answer:
4.51 ⁰ simplified would be 1 :)
It is 1 because anything to the 0 power is 1.
Answer:
try 2.32 trust me
Step-by-step explanation: