Answer:
\(x = 8\)
Step-by-step explanation:
Given:
\(DG = 10\)
See attachment for complete question.
From the attachment, we can conclude that:
\(x + 1 + 2x - 15 = DG\)
Substitute 10 for DG
\(x + 1 + 2x - 15 = 10\)
Collect Like Terms
\(x + 2x = 10 + 15 - 1\)
\(3x = 24\)
Solve for x
\(x = 24/3\)
\(x = 8\)
Determine whether the random variable described is discrete or continuous. The number of babies born on January 1, 2011 at a randomly chosen hospital. The random variable described is (Choose one v discrete continuous Tire lifetimes: The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with mean u= 39 and standard deviation o = 4. Use the TI-84 Plus calculator to answer the following. (a) What is the probability that a randomly chosen tire has a lifetime greater than 48 thousand miles? (b) What proportion of tires have lifetimes between 38 and 43 thousand miles? (c) What proportion of tires have lifetimes less than 47 thousand miles? Round the answers to at least four decimal places.
In the given rate law, the value of x is 1 if the rate doubles when the concentration of A is doubled, and x is 0 if no change in the rate occurs when the concentration of A is doubled.
The rate law is expressed as rate = \([A]^x\), where [A] represents the concentration of A and x is the exponent that determines the reaction order with respect to A.
If the rate doubles when [A] is doubled, it means that doubling the concentration of A leads to a doubling of the rate. Mathematically, this can be represented as:
\(2 * rate = 2^x * [A]^x\)
Since the rate doubles, we have:
2 rate = rate \(2^x\)
Cancelling out the common factor of rate on both sides, we obtain:
\(2 = 2^x\)
Taking the logarithm of both sides, we have:
log(2) = xlog(2)
Simplifying further, we get: x = 1
Therefore, the value of x is 1 when the rate doubles upon doubling the concentration of A.
On the other hand, if no change in the rate occurs when [A] is doubled, it means that doubling the concentration of A does not affect the rate. In this case, the equation can be written as:
rate =\([A]^x\)
Doubling [A] results in:
rate' = \([A']^x\)
Since the rate remains the same, we have:
rate = rate'
Substituting the expressions, we get:
\([A]^x = [A']^x\)
Taking the x-th root of both sides, we have:
[A] = [A']
Since [A'] is twice the original concentration [A], we can write:
2[A] = [A]
Dividing both sides by [A], we get:2 = 1
This equation is not true, indicating that x cannot be any non-zero value. Therefore, when no change in the rate occurs upon doubling the concentration of A, the value of x is 0.
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what are the steps to induction nsls
These steps are often referred to as the principle of mathematical induction or PMI.
The steps for mathematical induction are:
Base Case: Show that the statement holds for some particular value of n, usually n = 1 or n = 0.
Inductive Hypothesis: Assume that the statement holds for some arbitrary value of n = k, where k is a positive integer.
Inductive Step: Using the inductive hypothesis, show that the statement also holds for n = k + 1.
Conclusion: By the principle of mathematical induction, the statement is true for all positive integers n.
These steps are often referred to as the principle of mathematical induction or PMI. They are used to prove statements that involve an infinite set of integers by showing that the statement holds for a base case, assuming that it holds for an arbitrary value, and then showing that it holds for the next integer in the set.
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Find the distance between x=1 and y = The distance between x and y is (Type an exact answer, using radicals as needed.) Find the distance between ...
the distance between x = 1 and y = √2 is √3.
To find the distance between two points (x1, y1) and (x2, y2) in a two-dimensional coordinate system, we can use the distance formula:
Distance = sqrt((x2 - x1)^2 + (y2 - y1)^2)
In this case, we want to find the distance between x = 1 and y = √2.
Let's consider the points (1, 0) and (0, √2) as the coordinates (x1, y1) and (x2, y2), respectively.
Using the distance formula:
Distance = sqrt((0 - 1)^2 + (√2 - 0)^2)
= sqrt((-1)^2 + (√2)^2)
= sqrt(1 + 2)
= sqrt(3)
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solve the equation .
X-8= 20 - 6(x + 7)
A Web site defines a regular polygon as “a polygon with all sides the same length.” Is this definition valid?
Answer:
Yes, this definition is valid. A regular polygon is a polygon where all sides are equal in length and all angles between the sides are also equal. Therefore, stating that a regular polygon has all sides of the same length is an accurate description of the defining characteristic of such a shape.
Which of the following appear in the diagram below? Check ALL that apply.
Answer:
∠ZXY and ZX
XYZ is not found on the diagram, as there is no line going from Z to Y, and YX is not a line segement in the diagram, its a full line.
Answer: zxy and yx for apex
What is 2 ÷ 8/9 ????
Answer:
\(2 \div \frac{8}{9} = 2 \times \frac{9}{8} = \frac{9}{4} = 2.25\)
I hope I helped you^_^
Answer:
Step-by-step explanation:
Use KCF method for fraction division.
K- Keep the first fraction.
Change the division to multiplication.
Flip the second fraction
2 ÷ 8/9 = \(2 * \dfrac{9}{8}\)
\(= 1*\dfrac{9}{4}=\dfrac{9}{4}\\\\= 2\dfrac{1}{4}\)
What must be added to the expression x^2 - 18x to make it a perfect square?
Answer:
+ 81
Step-by-step explanation:
Given
x² - 18x
To complete the square
add ( half the coefficient of the x- term )² to x² - 18x
x² + 2(- 9)x + (- 9)²
= x² - 18x + 81
= (x - 9)² ← perfect square
The area of a rectangular rug is (3x +9) square units. Factor (3x +39) to find possible dimensions of the rug.
Graph the vertices of the plot of land on a coordinate plane. The vertices are: (4,3), (9, 3), (9, 8.4), and (4, 5). There is also a road that extends from (4,3) westward, where it intersects with the main highway at (0, 3). Determine the length of the road from the main highway to the western edge of the plot of land. Also, determine the length of the road from the main highway to the
eastern edge of the plot of land. Explain how you got your answers.
The length of the road from the main highway to the western edge of the plot of land is 4 units.
The length of the road from the main highway to the eastern edge of the plot of land is 2√5 units.
What is coordinate plane?A coordinate plane, also known as a Cartesian plane or xy-plane, is a two-dimensional plane formed by two perpendicular lines called the x-axis and the y-axis. The point where the two axes intersect is called the origin, usually denoted by the point (0,0).
According to question:To determine the length of the road from the main highway to the western edge of the plot of land, we can calculate the horizontal distance between the two points (0, 3) and (4, 3) using the distance formula:
d = √((4-0)² + (3-3)²)
= √16
= 4
To determine the length of the road from the main highway to the eastern edge of the plot of land, we first need to find the point where the road intersects with the eastern edge of the plot. From the graph, we can see that the road intersects with the eastern edge of the plot at the point (4, 5). We can then calculate the distance between (0, 3) and (4, 5) using the distance formula:
d = √((4-0)² + (5-3)²)
= √(16+4)
= √20
= 2√5
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Which problem is being modeled on the number line?
Answer:
Step-by-step explanation:
The exchange rate at the post office is £1=€1. 17
how many euros is £280
The exchange rate at the post office is £1 = €1.17. Therefore, to find how many euros is £280, we have to multiply £280 by the exchange rate, which is €1.17.
Let's do this below:\[£280 \times €1.17 = €327.60\]Therefore, the amount of euros that £280 is equivalent to, using the exchange rate at the post office of £1=€1.17, is €327.60. Therefore, you can conclude that £280 is equivalent to €327.60 using this exchange rate.It is important to keep in mind that exchange rates fluctuate constantly, so this exchange rate may not be the same at all times. It is best to check the current exchange rate before making any currency conversions.
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Write an explicit formula for an,
the nth term of the sequence 6, 16, 26, ....
Answer:
6 plus 10
Step-by-step explanation:
6 beginning number plus 10 repeatedly
Suppose x has a normal distribution with mean 80 and standard deviation 5. What is the 90th percentile of x?.
The 90th percentile of x is 70.
What is standard deviation?
A set of values' variance or dispersion is measured by the standard deviation. While a high standard deviation implies that the values are dispersed over a wider range, a low standard deviation shows that the values tend to be close to the mean of the collection.
Given: Mean = 80, s = 5.
Computing values to standard deviation from mean,
Lower limit = mean - 2s
= 80 - 2(5)
= 80 - 10
Lower limit = 70
Hence, if x has a normal distribution with mean 80 and standard deviation 5 then the 90th percentile of x is 70.
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*internal screaming beginss
Answer:
The answer is 5 1/4 liters in 1 hour.
Step-by-step explanation:
If Ben drinks 3 1/2 liters of tea in only 2/3 of a hour, this is how you calculate it. First of all, Ben is not a human being, like who can drink 3 and a half liters of tea in under a hour. To calculate how much Ben drinks in a hour, first multiply both fractions by 3, you will get 10 1/2 liters in 2 hours. Then, divide both fractions by 2, in which you will get 5 1/4 liters in 1 hour. That's your answer!
Answer:
21/4
Step-by-step explanation:
Divide the two numbers
3 1/2 =7/2 as a improper fraction
7/2 divided by 2/3
7/2 times 3/2
21/4 or 5 1/4
The absolute value of (2−7)=
The absolute value is:
5Work/explanation:
First, we will evaluate 2-7.
It evaluates to -5.
Now, let's find the absolute value of -5 by using these rules:
\(\sf{\mid a\mid=a}\)
\(\sf{\mid-a \mid=a}\)
Similarly, the absolute value of -5 is:
\(\sf{\mid-5\mid=5}\)
Hence, 5 is the answer.3(x-4)-2>5x solve for x
Answer:
x < -7
Step-by-step explanation:
3(x-4)-2>5x
3x - 12 - 2 > 5x
3x - 14 > 5x
-2x > 14
x < -7
Answer: x<-7
Step-by-step explanation: 3(x-4)= 3x-12
3x-14>5x
5x-3x=2x
-14>2x
-14/2=-7
-7>x
Helena has the same number of 1$, $5, and $10 bills. The total value of these bills is $128. How many of each bill does she have
Answer: 8 bills of each.
Step-by-step explanation:
10x 8=80
5x8=40
1x8=8
=128
hii can someone pls help me, I’m not sure what the answer is
Answer:
try -10
Step-by-step explanation:
Sam is making Apple Pies and Pumpkin Pies for her Pie shop. She sells each Apple Pie for $7
and each Pumpkin Pie for $6. If Sam sells a total of 80 pies one day and makes a total of
$512, how many of each type of Pie did she sell?
Answer:50
Step-by-step explanation:
Number or apple pie and pumpkin pie are 32 and 48.
Elimination method:Given that;
Rate of Apple pie = $7
Rate of Pumpkin pie = $6
Total number of pie = 80
Amount earn = $512
Find:
Number or apple pie and pumpkin pie
Computation:
Assume;
Number of apple pie = a
Number of pumpkin pie = b
So,
a + b = 80 ..... Eq1
7a + 6b = 512 ..... Eq2
Eq1 × 7
7a + 7b = 560 ...... Eq3
Eq3 - Eq2
b = 48
Number of apple pie = 32
Number of pumpkin pie = 48
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a binary tree is a structure in which each node is capable of having successor nodes, called .
A binary tree is a structure in which each node is capable of having two successor nodes, called "left child" and "right child."
In a binary tree, each node can have at most two successor nodes, known as the left child and the right child. These successor nodes branch out from the parent node, forming two distinct paths or branches. The left child represents the left branch, and the right child represents the right branch. This hierarchical structure allows for efficient organization and traversal of data, as each node can connect to two other nodes, creating a branching pattern throughout the tree. The concept of left and right children enables various operations and algorithms to be performed on the binary tree, such as insertion, deletion, searching, and sorting.
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Un corredor corrió una distancia de 1 ⅘ millas.
Si este corredor se paraba cada 1/5 millas.
cuántas paradas este corredor hizo ?
The number of stops that the runner would make is 9.
What is a fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
Since the runner runs 1 4/5 miles and stops every 1/5 mile. The number of stops will be:
= Total mile / Stop
= 1 4/5 ÷ 1/5
= 9/5 ÷ 1/5.
= 9/5 × 5/1
= 9
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You use technology to carry out a significance testand get a P-value of 0.031. The correct conclusion is
Answer:
The significance test result using technology gave a P-value of 0.031. Based on the conventional level of significance of 0.05, this suggests that we reject the null hypothesis and conclude that there is strong evidence to support the alternative hypothesis. In other words, the result is statistically significant, indicating that there is a significant relationship or difference between the variables being tested. Therefore, we can confidently say that the result is not due to chance and provides reliable evidence to support the alternative hypothesis.
You would use a _____ to illustrate data for a variable measured at the ____ scale of measurement.
You would use a histogram to illustrate data for a variable measured at the interval/ratio scale of measurement.
A histogram is a type of graph that uses adjacent rectangles to depict the distribution of continuous numerical data.
A variable is a feature or property that can take on several different values. In the research context, a variable can be described as anything that may have an effect on the outcome of a study or research project.
Variables can be classified according to the scale of measurement, which is a mathematical categorization of the nature of variables that have been measured. There are four different levels of measurement: nominal, ordinal, interval, and ratio.
Nominal data describes categories that cannot be ordered, while ordinal data describes categories that can be ordered. Interval data measures differences between variables, but there is no true zero point. On the other hand, ratio data has a true zero point and describes the ratio of two variables.
Therefore, histograms are used to illustrate data for a variable measured at the interval/ratio scale of measurement.
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Find the exact length of the curve.y = 3 + 4x^3/2, 0 ≤ x ≤ 1
The exact length of the curve. y = 3 + 4x^3/2, 0 ≤ x ≤ 1 is L = ∫√(9+108x-144x^(5/2)) / √(9-16x^3) dx, from 0 to 1.
To find the length of the curve, we need to use the arc length formula:
L = ∫√(1+(dy/dx)^2) dx, where y = 3 + 4x^(3/2) and 0 ≤ x ≤ 1.
First, we need to find dy/dx:
dy/dx = (12x^(1/2))/2√(3 + 4x^(3/2))
dy/dx = 6x^(1/2)/√(3 + 4x^(3/2))
Now, we can substitute this into the arc length formula:
L = ∫√(1+(6x^(1/2)/√(3 + 4x^(3/2)))^2) dx, from 0 to 1.
Simplifying the inside of the square root, we get:
L = ∫√(1+(36x)/(3 + 4x^(3/2))) dx, from 0 to 1.
We can simplify this further by multiplying the numerator and denominator of the fraction by (3 - 4x^(3/2)):
L = ∫√(1+36x(3-4x^(3/2))/(9-16x^3)) dx, from 0 to 1.
Expanding the numerator, we get:
L = ∫√((9+108x-144x^(5/2))/(9-16x^3)) dx, from 0 to 1.
Simplifying the expression under the square root, we get:
L = ∫√(9+108x-144x^(5/2)) / √(9-16x^3) dx, from 0 to 1.
We can evaluate this integral using numerical methods, such as Simpson's rule or the trapezoidal rule, to get an approximation of the length of the curve. The exact length of the curve cannot be expressed in a finite number of terms, but it can be approximated to any desired degree of accuracy using numerical methods.
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The thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters.
a) Determine the proportion of flanges that exceeds 1.01 millimeters.
b) What thickness is exceeded by 90% of the flanges?c) Determine the mean and variance of flange thickness.
Mean = (millimeters)
variance = (millimeters2)
With the thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters.
a) 40% of the flanges exceeds 1.01 millimeters.
b) 1.04 millimeters is the thickness that is exceeded by 90% of the flanges.
c) The mean of flange thickness is 1 millimeters and the variance of flange thickness is 0.01 millimeters^2.
a) To determine the proportion of flanges that exceeds 1.01 millimeters, we need to find the area under the probability density function (pdf) of the thickness that is greater than 1.01 millimeters.
Let's call the random variable X representing the thickness of the flange. The pdf of X is uniform, so it has constant value over the interval [0.95, 1.05]. Therefore, the proportion of flanges that exceeds 1.01 millimeters can be found as follows:
P(X > 1.01) = (1.05 - 1.01) / (1.05 - 0.95) = (1.05 - 1.01) / 0.1 = 0.04 / 0.1 = 0.4
So, 40% of the flanges exceed 1.01 millimeters.
b) To find the thickness that is exceeded by 90% of the flanges, we need to solve for X in the following equation:
P(X > X) = 0.9
Substituting the values for the pdf, we get:
(X - 0.95) / (1.05 - 0.95) = 0.9
Solving for X, we get:
X = 0.95 + 0.9 * (1.05 - 0.95) = 0.95 + 0.9 * 0.1 = 0.95 + 0.09 = 1.04
So, 1.04 millimeters is the thickness that is exceeded by 90% of the flanges.
c) The mean of X can be calculated as follows:
Mean = (0.95 + 1.05) / 2 = 1
The variance of X can be calculated as follows:
Variance = (1.05 - 0.95)^2 / 12 = 0.01
So, the mean and variance of flange thickness are:
Mean = 1 millimeters
Variance = 0.01 millimeters^2
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LaRusso Auto Group sold a total of 5,000 vehicles in the last year. 750 of the cars sold were found to have a defect that will require a factory recall for dealer correction.For a simple random sample of n=50 of last year's customers, what is the expected number of customers requiring a recall. Round your answer to 1 decimal place (include a zero if necessary).
For a sample of 50 customers of last year's customers, the expected number of customers requiring a recall is equals to the 7.5 customers.
The expected value or say mean of a binomial distribution is determined by multiplying the number of trials (n) by the probability of successes (p), that is E(x) = n × p. We have a LaRusso Auto Group of vehicles. Total sales of cars in last year
= 5,000
Number of defective cars in sold cars
= 750
For a random sample of last year's customers, sample size, n= 50
We have to determine the expected number of customers requiring a recall.
Now, the probability of defective cars and customers make a factory recall for dealer correction, p = \(\frac{750}{5000} \) = 0.15
So, the sales of cars in Store follows the binomial distribution with parameters n, p. Using expected value or number formula, E(x) = n×p
= 50 × 0.15 = 7.5
Hence, required value is 7.5 customers.
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Ivan had 5.451 meters of string. He used 0.75 meter of the string to hang balloons. Ivan then cut the remaining string into 3 equal pieces. What is the length of each piece of string?
Answer:1567/1000
Step-by-step explanation:
please help me there is a lot of point fastest one get its
Answer:
3%
Step-by-step explanation:
It says 21 out of 700 are defective
What we're trying to find: "21 is what % of 700"
We can divide 21/700 to get that answer
21/700 = 0.03 which is 3%
We can set a ratio also
21/700 = x/100
If we cross multiply and divide we end up with
700x = 2100
Divide both by 700 and you get 3... 3%
Sully, Emma, Diane, and Wayne are eating a large pizza. The cost of the pizza is $19.50. They decide to pay for the pizza depending on what portion of the pizza each ate. Sully ate of the pizza, Emma ate 12.5% of the pizza, and Diane ate of the pizza. If Wayne ate all of the remaining pizza, how much should he pay?
A. $4.88
B. $2.44
C. $3.66
D. $7.31