Answer:
-3
Step-by-step explanation:
That's the number the line goes through
Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 7 minutes. Determine the probability that the child must wait between 6 and 9 minutes on the bus on a given morning.
Answer:
The probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.
Step-by-step explanation:
Let the random variable X represent the time a child spends waiting at for the bus as a school bus stop.
The random variable X is exponentially distributed with mean 7 minutes.
Then the parameter of the distribution is,\(\lambda=\frac{1}{\mu}=\frac{1}{7}\).
The probability density function of X is:
\(f_{X}(x)=\lambda\cdot e^{-\lambda x};\ x>0,\ \lambda>0\)
Compute the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning as follows:
\(P(6\leq X\leq 9)=\int\limits^{9}_{6} {\lambda\cdot e^{-\lambda x}} \, dx\)
\(=\int\limits^{9}_{6} {\frac{1}{7}\cdot e^{-\frac{1}{7} \cdot x}} \, dx \\\\=\frac{1}{7}\cdot \int\limits^{9}_{6} {e^{-\frac{1}{7} \cdot x}} \, dx \\\\=[-e^{-\frac{1}{7} \cdot x}]^{9}_{6}\\\\=e^{-\frac{1}{7} \cdot 6}-e^{-\frac{1}{7} \cdot 9}\\\\=0.424373-0.276453\\\\=0.14792\\\\\approx 0.148\)
Thus, the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.
Using the exponential distribution, it is found that there is a 0.1479 = 14.79% probability that the child must wait between 6 and 9 minutes on the bus on a given morning.
The exponential probability distribution, with mean m, is described by the following equation:
\(f(x) = \mu e^{-\mu x}\)
In which \(\mu = \frac{1}{m}\) is the decay parameter.
The probability that x is lower or equal to a is given by:
\(P(X \leq x) = \int\limits^a_0 {f(x)} \, dx\)
Which has the following solution:
\(P(X \leq x) = 1 - e^{-\mu x}\)
In this problem, we have that mean of 7 minutes, hence:
\(m = 7, \mu = \frac{1}{7}\)
The probability that the child must wait between 6 and 9 minutes on the bus on a given morning is:
\(P(6 \leq X \leq 9) = P(X \leq 9) - P(X \leq 6)\)
In which:
\(P(X \leq 9) = 1 - e^{-\frac{9}{7}} = 0.7235\)
\(P(X \leq 6) = 1 - e^{-\frac{6}{7}} = 0.5756\)
Hence:
\(P(6 \leq X \leq 9) = P(X \leq 9) - P(X \leq 6) = 0.7235 - 0.5756 = 0.1479\)
0.1479 = 14.79% probability that the child must wait between 6 and 9 minutes on the bus on a given morning.
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Are the slopes to the equations
y=2x+5 and y=3x+5 parallel,
perpendicular, or neither
Answer: Neither
Step-by-step explanation:
A cone has a volume of 432π cm³ and a height of 9 cm. Calculate the radius of the cone.
Answer:
nnnnnnnnnnnnnnnnnx ce 3rd d
Answer:
Step-by-step explanation:
r = √3 v/πh
Putting values
= 6.77
what is the answer to this equation 21 x ___=7
Answer:
the answer is 3
Step-by-step explanation:
21 x 3 =7
hope it helps
Answer:
21/7
Step-by-step explanation:
Move 7 to next side with opposite process it is multiple after move it will be divided so 21x (21/7) it will be 7 although (21/7)equivalent to 1/3
The owner of an apple orchard has learned from previous experience that, on average, 5% of the harvested apples have blemishes. The owner randomly selects 10 apples from this year’s harvest. What is the probability that 2 of the apples have blemishes?
The probability that 2 of the apples have blemishes will be 0.0746.
Frequency distribution of the percentage of successful outcomes that might occur in a certain number of trials with the same chance of success. If X~B(n, p), then the probability is given as,
\(\rm P(X=x) = \ ^nC_x \times p^x \times (1-p)^{n - x}\)
The probability is calculated as,
P(X = 2) = ¹⁰C₂ * (0.05)² * (0.95)⁸
P(X = 2) = 0.0746
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Which set of ordered pairs could represent the same function as y = x2 ?
A (1, 1), (2, 4), (3,6)
B (1,1),(3,9), (7,49)
© (1,2), (4,16), (8, 64)
D (4,8), (5, 25), (6,36)
Answer:
B (1, 1),(3, 9), (7, 49)
Step-by-step explanation:
Given function:
y = x²Let's verify which set of pairs are same with the given function:
A....................
(1, 1) - yes(2, 4) - yes(3, 6) - no, 6≠ 3²B....................
(1, 1) - yes(3, 9) - yes(7, 49) - yesC....................
(1, 2)- no, 2≠ 1²(4, 16) - yes(8, 64) - yesD....................
(4, 8) - no, 8 ≠ 4²(5, 25) - yes(6, 36) - yes
Solve 5 and 6
for 40 POINTS
Answer:
A= 184.4 yards
Step-by-step explanation:
couldnt figure out b
What is the northerly Component of a wind blowing at 15ms from the South East?
The northerly component of the wind blowing at 15 m/s from the South East is approximately 10.605 m/s.
To determine the northerly component of a wind blowing from the South East, we need to consider the direction from which the wind is coming and its magnitude.
A wind blowing from the South East means it is coming from the South East direction towards the opposite direction, which is the North West. Since the wind is coming from the South East, we can say it has a southeasterly direction.
To find the northerly component, we need to break down the wind vector into its north and east components. The northerly component represents the part of the wind that is directed towards the north.
If we assume that the wind is blowing at an angle of 45 degrees with respect to the North, we can use trigonometry to find the components. Since the wind is blowing at 15 m/s, we can consider it as the hypotenuse of a right triangle.
The northerly component can be found using the sine of the angle:
Northerly Component = Wind Speed * sin(Angle)
Northerly Component = 15 m/s * sin(45°)
Using the value of sin(45°) (which is √2 / 2 ≈ 0.707), we can calculate the northerly component:
Northerly Component ≈ 15 m/s * 0.707
Northerly Component ≈ 10.605 m/s
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Really need help on question 8.
Answer:50.18
Step-by-step explanation:
8x+17+9x+11=102
17x+28=102
-28. -28
17x=74
<CAD=9x+11=50.18
x=74/17
One adult and 3 student tickets cost $11.50. Three adult and 2 student tickets cost $17.00.
a. Write a system of equations to represent this scenario.
b. Solve. Must show work. (Make sure to type the $ before the value.)
Adult tickets:
Student tickets:
a. System of equations:
b. Adult tickets:
Student tickets:
Answer:
Adult-. $4
Student-. $2.50
Step-by-step explanation:
equation
1a + 3s = $11.50
3a + 2s = $17.00
$4+$2.50(3)=$11.50
$12+$2.50(2)=$17.00
or
1($4)+3($2.50)=$11.50
3($4)+2($2.50)=$17.00
sorry if this is a little confusing, this is a simpler equation-
$4.00+($2.50x3)=$11.50
($4.00x3)+($2.50x2)=$17.00
Marco took a math quiz last week. He got 17 out of 67 problems correct. What percentage did Marco get correct
Answer:
25.37%
Step-by-step explanation:
fillerfillerfillerfiller
In
nearest 10th of a square centimeter.
Answer:
its be 9th of square centimeter
60 POINT QUESTION. Middle school math, ordered pairs.
Answer:
(0,2)
(3,0)
Step-by-step explanation:
What number has 1 ten thousand, the same number of thousands as ten thousands, 8 more hundreds than thousands, 7 fewer tens than hundreds, and 1 more than tens?
Answer: 11,923
Step-by-step explanation:
Quad ABCD John Squad ABCD John pillow is translated 3 units to the left to create quad ABCD which statement is true
Answer:
option- a
Step-by-step explanation:
the length of AB = A'B'
Find the binomial coefficient:200/1
Answer:
1/200????????????????
Step-by-step explanation:
When randomly selecting adults, let M denote the event of randomly selecting a male and let B denote the event of randomly selecting someone with blue eyes. What does P(M|B) represent? Is P(M|B) the same as P(B|M)?
Answer:
See explanation
Step-by-step explanation:
Given
\(M \to\) randomly selecting a male
\(B \to\) randomly selecting someone with blue eyes
Solving (a): Interpret P(M|B)
The above implies conditional probability
The interpretation is: the probability of selecting a male provided that a person with blue eyes has been selected
Solving (b): is (a) the same as P(B|M)
No, they are not the same.
The interpretation of P(B|M) is: the probability of selecting a person with blue eyes provided that a male has been selected
Ame, Devon, Micah, and Shawna ran in a long distance race. The graph shows their progress during the race.
Distance (meters)
B. Devon
Legend
Time (minutes)
Which runner started out fast, then ran the rest of the race at a slower rate of speed?
OA Ame
Oc. Micah
OD. Shawna
Ame
Devon
Micah
Shawna
Therefore, option (C) Micah is the correct answer. The graph displays how they fared throughout the race. Distance (meters).
What do speed and distance mean?The pace at which an object moves from one location to another is the fundamental definition of speed. The magnitude of an object's velocity is considered to be its speed. It is unquestionably a scalar amount. Distance is the separation of any two locations by any amount of space.
How does math define distance?In most cases, distance is employed to express how far apart two things are. This concept gets slightly more precise when viewed from a mathematical standpoint. To understand distance geometrically, line segments must first be discussed.
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After Ted's birthday party, there was 1/5 of his cake left over. He and his 2 brothers decided to split the left over cake. What size piece did each brother have?
Answer:
Step-by-step explan
decimal answer: 0.06
fraction: 1/15
(edited)
Answer: 1/15
1/5*1/3 = 1/15
Step-by-step explanation:
Use the definition to calculate the derivative of the following function. Then find the values of the derivative as specified.
Answer:
Refer to the step-by-step explanation, please follow along very carefully. Answers are encased in two boxes.
Step-by-step explanation:
Given the following function, find it's derivative using the definition of derivatives. Evaluate the function when θ=1, 11, and 3/11
\(p(\theta)=\sqrt{11\theta}\)
\(\hrulefill\)
The definition of derivatives states that the derivative of a function at a specific point measures the rate of change of the function at that point. It is defined as the limit of the difference quotient as the change in the input variable approaches zero.
\(f'(x) = \lim_{{h \to 0}} \dfrac{{f(x+h) - f(x)}}{{h}}\)\(\hrulefill\)
To apply the definition of derivatives to this problem, follow these step-by-step instructions:
Step 1: Identify the function: Determine the function for which you want to find the derivative. In out case the function is denoted as p(θ).
\(p(\theta)=\sqrt{11\theta}\)
Step 2: Write the difference quotient: Using the definition of derivatives, write down the difference quotient. The general form of the difference quotient is (f(x+h) - f(x))/h, where "x" is the point at which you want to find the derivative, and "h" represents a small change in the input variable. In our case:
\(p'(\theta) = \lim_{{h \to 0}} \dfrac{{p(\theta+h) - p(\theta)}}{{h}}\\\\\\\Longrightarrow p'(\theta)= \lim_{h \to 0} \dfrac{\sqrt{11(\theta + h)} - \sqrt{11\theta} }{h}\)
Step 3: Take the limit:
We need to rationalize the numerator. Rewriting using radical rules.
\(p'(\theta)= \lim_{h \to 0} \dfrac{\sqrt{11(\theta + h)} - \sqrt{11\theta} }{h} \\\\\\\Longrightarrow p'(\theta)= \lim_{h \to 0} \dfrac{\sqrt{11\theta + 11h} - \sqrt{11\theta} }{h}\\\\\\\Longrightarrow p'(\theta)= \lim_{h \to 0} \dfrac{\sqrt{11}\sqrt{\theta+h} - \sqrt{11}\sqrt{\theta} }{h}\)
Now multiply by the conjugate.
\(p'(\theta)= \lim_{h \to 0} \dfrac{\sqrt{11}\sqrt{\theta+h} - \sqrt{11}\sqrt{\theta} }{h} \cdot \dfrac{\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} }{\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} } \\\\\\\Longrightarrow p'(\theta)= \lim_{h \to 0} \dfrac{(\sqrt{11}\sqrt{\theta+h} - \sqrt{11}\sqrt{\theta} )(\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} )}{h(\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} )} \\\\\\\)
\(\Longrightarrow p'(\theta)= \lim_{h \to 0} \dfrac{11h}{h(\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} )}\\\\\\\Longrightarrow p'(\theta)= \lim_{h \to 0} \dfrac{11}{\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} }\)
Step 4: Simplify the expression: Evaluate the limit by substituting the value of h=0 into the difference quotient. Simplify the expression as much as possible.
\(p'(\theta)= \lim_{h \to 0} \dfrac{11}{\sqrt{11}\sqrt{\theta+h} + \sqrt{11}\sqrt{\theta} }\\\\\\\Longrightarrow p'(\theta)= \dfrac{11}{\sqrt{11}\sqrt{\theta+(0)} + \sqrt{11}\sqrt{\theta} }\\\\\\\Longrightarrow p'(\theta)= \dfrac{11}{\sqrt{11}\sqrt{\theta} + \sqrt{11}\sqrt{\theta} }\\\\\\\Longrightarrow p'(\theta)= \dfrac{11}{2\sqrt{11}\sqrt{\theta} }\\\\\\\Longrightarrow p'(\theta)= \dfrac{11}{2\sqrt{11\theta} }\\\\\\\Longrightarrow p'(\theta)= \dfrac{11}{2\sqrt{11\theta} }\)
\(\therefore \boxed{\boxed{p'(\theta)= \dfrac{\sqrt{11} }{2\sqrt{\theta} }}}\)
Thus, we have found the derivative on the function using the definition.
It's important to note that in practice, finding derivatives using the definition can be a tedious process, especially for more complex functions. However, the definition lays the foundation for understanding the concept of derivatives and its applications. In practice, there are various rules and techniques, such as the power rule, product rule, and chain rule, that can be applied to find derivatives more efficiently.\(\hrulefill\)
Now evaluating the function at the given points.
\(p'(\theta)= \dfrac{\sqrt{11} }{2\sqrt{\theta}}; \ p'(1)=??, \ p'(11)=??, \ p'(\frac{3}{11} )=??\)
When θ=1:
\(p'(\theta)= \dfrac{\sqrt{11} }{2\sqrt{\theta}}\\\\\\\Longrightarrow p'(1)= \dfrac{\sqrt{11} }{2\sqrt{1}}\\\\\\\therefore \boxed{\boxed{p'(1)= \dfrac{\sqrt{11} }{2}}}\)
When θ=11:
\(p'(\theta)= \dfrac{\sqrt{11} }{2\sqrt{\theta}}\\\\\\\Longrightarrow p'(11)= \dfrac{\sqrt{11} }{2\sqrt{11}}\\\\\\\therefore \boxed{\boxed{p'(11)= \dfrac{1}{2}}}\)
When θ=3/11:
\(p'(\theta)= \dfrac{\sqrt{11} }{2\sqrt{\theta}}\\\\\\\Longrightarrow p'(\frac{3}{11} )= \dfrac{\sqrt{11} }{2\sqrt{\frac{3}{11} }}\\\\\\\therefore \boxed{\boxed{p'(\frac{3}{11} )= \dfrac{11\sqrt{3} }{6}}}\)
Thus, all parts are solved.
Hi I need help on this I've been working on it for about 20 minutes now please help :)
Answer:
V = 4 2/3 units ^3
Step-by-step explanation:
We are given the area of the back rectangle
V = BH where B is the area of the base
V = 3 1/3 * 1 2/5
Rewriting the mixed numbers as improper fractions
V = 10/3 * 7/5
V = 70/15
Simplifying
V = 14/3
Changing back to a mixed number
V = 4 2/3 units ^3
A local zoo has just opened a new stingray environment with 7 young healthy stingrays. The population of stingrays in the endosure is expected
to at least double every year and can be represented after years by this inequality.
y > 7(2)
At the time the stingrays were added to the enclosure, the zookeepers determined that the enclosure could sustain at most 160 stingrays. The
number of stingrays the enclosure can sustain after years, because of budget constraints, can be represented by this inequality.
y 160 - 25
Which point on the graph represents a possible number of stingrays, y, in the enclosure?
Y
240
200
160
120
80
40
-10
Answer:
its the one closest to 120. its correct on plato/edmentum
Step-by-step explanation:
Answer:
the point just to the right of 120
Step-by-step explanation:
I got it right on PLATO
A. Circle
B. Kite
C. Rectangle
D. Trapezoid
ANY ONE PLZZ THIS IS DUE IN TWO HOURS!!!!!!!!
Answer:
it is option A bro
follow me if it is helpful
Round 43.131 to the nearest tenth
43.131
/\
|
This is the tenths spot.
40.000 or 40
Leila is buying a dinosaur model. The price of the model is xxx dollars, and she also has to pay a 7\%7%7, percent tax.
Which of the following expressions could represent how much Leila pays in total for the model?
Choose 2 answers:
Choose 2 answers:
(Choice A)
A
\dfrac{107}{100}x
100
107
xstart fraction, 107, divided by, 100, end fraction, x
(Choice B)
B
0.7x+x0.7x+x0, point, 7, x, plus, x
(Choice C)
C
1.07x1.07x1, point, 07, x
(Choice D)
D
x+\dfrac{7}{10}xx+
10
7
xx, plus, start fraction, 7, divided by, 10, end fraction, x
(Choice E)
E
1.7x1.7x
The expressions that could represent how much Leila pays in total for the model
\dfrac{107}{100}x
100 107 Option A is correct.
This is further explained below.
Which of the following expressions could represent how much Leila pays in total for the model?The price of the model is x
Now we are given that she also has to pay a 7 tax.
Amount of tax =7 % x
\(=\frac{7}{100} x\)
the Total cost\(=x+\frac{7}{100} x\)
\(=\frac{107}{100} x\)
In conclusion, the statement might signify Leila's overall cost for the model. \(\frac{107}{100} x\)
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An electrician wants to know whether batteries made by two manufacturers have
significantly different voltages. The voltage of 108 batteries from each manufacturer
were measured. The population standard deviations of the voltage for each
manufacturer are known. The results are summarized in the following table.
Manufacturer Sample mean voltage (millivolts) Population standard deviat
A
B
179
178
1
What type of hypothesis test should be performed? Select
What is the test statistic? Ex: 0.12
Does sufficient evidence exist to support the claim that the voltage of the batteries made
by the two manufacturers is different at the a= 0.05 significance level?
The appropriate hypothesis test is a two-sample t-test for independent samples.
The appropriate hypothesis test in this scenario is a two-sample t-test for independent samples. Since the population standard deviations are known, we can use the Z-test instead.
The test statistic can be calculated using the formula:
t = (x1 - x2) / sqrt((s1^2 / n1) + (s2^2 / n2))
Where:
x1 and x2 are the sample means for Manufacturer A and Manufacturer B, respectively.
s1 and s2 are the population standard deviations for Manufacturer A and Manufacturer B, respectively.
n1 and n2 are the sample sizes for Manufacturer A and Manufacturer B, respectively.
Plugging in the given values:
x1 = 179, x2 = 178, s1 = 1, s2 = 5, n1 = n2 = 108
t = (179 - 178) / sqrt((1^2 / 108) + (5^2 / 108))
t = 1 / sqrt(0.00926 + 0.0463)
t ≈ 1 / sqrt(0.05556)
t ≈ 1 / 0.2357
t ≈ 4.241
To determine whether there is sufficient evidence to support the claim that the voltage of the batteries made by the two manufacturers is different, we compare the calculated t-value to the critical value from the t-distribution at the desired significance level (0.05).
The decision depends on the degrees of freedom for the test, which is calculated as (n1 + n2 - 2) = (108 + 108 - 2) = 214.
Using a t-table or statistical software, we find that the critical value for a two-tailed test with a significance level of 0.05 and 214 degrees of freedom is approximately ±1.972.
Since the calculated t-value of 4.241 exceeds the critical value of 1.972, we reject the null hypothesis and conclude that there is sufficient evidence to support the claim that the voltage of the batteries made by the two manufacturers is different at the 0.05 significance level.
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Help me solve this please !! X^2+6x+y^2+8y=52
Figure ABCD is a rhombus. Find the value of x.
3x - 13 8x - 7
x = [ ? ]°
Answer: 10
Step-by-step explanation:
For simplicity, I will let the intersection of the diagonals be point E.
Since diagonals of a rhombus bisect each other, we know that triangle DEC is a right triangle.
Thus, we can use the fact that the acute angles of a right triangle are complementary to conclude that:
(3x-13) + (8x-7) = 90 [angles that are complementary add to 90 degrees]11x - 20 = 90 [combine like terms]11x = 110 [add 20 to both sides]x = 10 [divide both sides by 11]\(\quad \huge \quad \quad \boxed{ \tt \:Answer }\)
\(\qquad \tt \rightarrow \: x = 10°\)
____________________________________
\( \large \tt Solution \: : \)
Diagonals of a Rhombus bisect each other at right angle (90°)
\(\qquad \tt \rightarrow \: x + 58 + 90 = 180\)
[ Sum of interior angles of a triangle ]
\(\qquad \tt \rightarrow \: 3x - 13 + 8x - 7 + 90 = 180\)
\(\qquad \tt \rightarrow \: 11x + 70 = 180 \)
\(\qquad \tt \rightarrow \: 11x = 180 - 70 \degree\)
\(\qquad \tt \rightarrow \: 11x = 110\)
\(\qquad \tt \rightarrow \: x = \cfrac{110}{11} \)
\(\qquad \tt \rightarrow \: x = 10 \degree\)
Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Write the equation of the parabola that has the vertex at point (2,7) and passes through
the point (-1,3).
Answer:
\(f(x) = \frac{4}{3} (x - 2) ^{2} + 7\)
Step-by-step explanation:
the answer is :- .
\(f(x) = \frac{4}{3} (x - 2) ^{2} + 7\)
Answer:
y=-4(x+2)^2+7
Step-by-step explanation:
Group C
(4 x 6 = 2
17. If the cost of 8 book is Rs 520, find the cost of 10 books.
cost of 8 books = 520 AED
we can do this using direct proportion
8/520 , 10/x
(cross multiply
= 8x = 520 x 10
= 8 x 5200
x = 5200/8
x = 650 AED
therfore,
cost of 10 books is 650.