Answers
a. The point slope form of the equation is y-4=-3(x+5)/10.
b. The y-intercept of the line is 2.5.
c. The line crosses the y-axis halfway between the given points so the y-intercept is halfway between the y-coordinate of the point on the left, and that of the point on the right. The number halfway between those values is 2.5.
d. The slope intercept form is y = (-3/10)x + (5/2).
The solution has been obtained using linear equations.
What is linear equation?
A linear equation is one that has the highest degree of 1 possible. This indicates that there are no variables in a linear equation with exponents greater than 1. Such an equation on the graph, forms a straight line.
a. We know that general form of point- slope form of equation is
y-y₁=m(x-x₁)
Here, y₁= 4 and x₁= -5, y₂= 1 and x₂=5
Now, m = (y₂ - y₁) / (x₂ - x₁)
⇒m= (1-4)/(5-(-5))
⇒m= -3/10
Thus, we get the equation as y-4=-3(x+5)/10
b. At the y-intercept, the x coordinate is 0.
So, putting x coordinate as 0 in the equation, we get
⇒y-4=-3(0+5)/10
⇒y-4=-15/10
⇒y=-1.5 + 4
⇒y= 2.5
Thus, the y-intercept of the line is 2.5.
c. The line crosses the y-axis halfway between the given points so the y-intercept is halfway between the y-coordinate of the point on the left, and that of the point on the right. The number halfway between those values is 2.5.
d. The general equation for slope intercept form is y=mx+b
m= -3/10
b = y₁ - x₁(y₂ - y₁)/(x₂ - x₁)
⇒ b = 4 - (-5)(1 - 4)/(5 - (-5))
⇒ b = 4 - 15/10
⇒ b = 25/10
⇒ b = 5/2
So, we get y = (-3/10)x + (5/2).
Hence, the required solutions have been obtained.
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Related Questions
Use the ALEKS calculator to evaluate each expression.
Round your answers to the nearest thousandth.
Do not round any intermediate computations.
log√7 =
Log 23/6=
Answers
Exponential growth is a type of growth that occurs when the rate of increase is proportional to the current amount.
Logarithmic evaluationLog√7 = 1.659Log 23/6 = 0.862It is a rapid increase in the quantity of something over a period of time. Exponential growth can be seen in populations, investments, and other areas.It is characterized by a doubling or tripling of the original amount within a specified period of time.This type of growth is often caused by compounding, where gains from one period are reinvested in the next period, leading to a rapid increase in the overall amount.Exponential growth is often seen in the early stage of a business, when it is experiencing rapid growth due to investments or other factors.However, exponential growth can also lead to rapid decline if not managed properly.This is called logarithmic evaluation, which involves using logarithms to simplify complex expressions.To learn more about logarithmic evaluation refer to:
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A ball is thrown straight downward from the top of a tall building. The initial speed of the ball is10 m/s. It strikes the ground with a speed of60 m/s. How tall is the building? 28. A baseball is thrown straight downward with an initial speed of40ft/sfrom the top of the Washington Monument (555fthigh). How long does it take to reach the ground, and with what speed does the baseball strike the ground?
Answers
The tall of the building is 175m and the baseball strikes the ground in 4.53 seconds, 195 ft/s.
Assume that the acceleration due to gravity is 10m/s2.
The equation for the ball’s velocity in the downward direction is
v(t) = at + v₀.
Here
v₀=10m/s a=10m/s² v(t)=60m/s
Solving this for t we get the:
[tex]t =\frac{60m/s-10m/s}{10m/s^2}\\ \\t=\frac{50m/s}{10m/s^2}\\[/tex]
t=5s
The total distance traveled will be
[tex]x(t)=\frac{1}{2} at^2+v_{0} +x_{0}[/tex]
Here x₀ = 0 and we get:
[tex]x(t)=\frac{1}{2} (10m/s^2)(5s)^2+(10m/s)(5s)[/tex]
x=125m+50m
x=175m
The given values are:
u = 50 ft/s
h = 555 ft
g = 32 ft/s²
Let the time taken by the ball to reach the ground be t and the velocity of the ball as it hits the ground be v.
Use the third equation of motion
v²=u²+2as
v²=50²+2*32*555
v = 195 ft /s
Thus, the ball strikes the ground with a velocity of 195 ft/s.
Use the first equation of motion
v = u + at
195 = 50 + 32 t
32 t = 145
t = 4.53 second
Thus, the ball reaches the ground in 4.53 seconds.
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Find the x intercept of the graph of the equation .
2x - 4y = 9
Answers
To find the x-intercept of the graph of the equation 2x - 4y = 9, we need to find the value of x when y = 0.
We can solve for x as follows:
2x - 4y = 9
2x - 4(0) = 9 (substitute y = 0)
2x = 9
x = 9/2
Therefore, the x-intercept of the graph of the equation 2x - 4y = 9 is (9/2, 0).
Color Number of Stickers Brown 86 Green 24 Yellow 32 Orange 21 Red 21 Blue 30 How is the histogram for the stickers from the large package distributed?
(Algebra 2 Normal Distribution)
Answers
The distribution of the histogram for the large packages colors is given as follows:
Right skewed.
How to obtain the distribution of the histogram?The distribution depends on whichever of the mean or the median is greater, as follows:
Hence the distribution is defined as follows:
Mean greater than median: Positively(right) skewedMean less than the median: Negatively(left) skewedThe ordered data-set is given as follows:
21, 21, 24, 30, 32, 86.
The median is the mean of the two-middle values, hence:
Median = (24 + 30)/2
Median = 27.
The mean is the sum of all the observations divided by the number of observations, hence:
Mean = (21 + 21 + 24 + 30 + 32 + 86)/6
Mean = 35.67.
Mean > median, hence the distribution is right skewed.
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Find three sets of points that are on the line y=5/3x-2
Answers
Note that these points are not different from each other and are on the same line y = 5/3x - 2.
Any point on this line will have the coordinates (x, y) such that y = 5/3x - 2.
What are the points on a line?Generally, A point on a line is any place along that line that is represented by a set of coordinates in either two- or three-dimensional space, denoted by the letters x, y, or x, y, z, respectively.
An equation, such as y = mx + b, may be used to define a line in a mathematical context. In this equation, m refers to the slope, while b refers to the y-intercept.
Any point that can be made to fit into this equation is up for grabs.
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If a fair die is rolled 3 times, what is the probability, to the nearest thousandth, of getting exactly 1 three?
Answers
The probability of getting exactly 1 three, to the nearest thousandth is 0.347.
What is Binomial Distribution?Binomial distribution is the distribution of a random variable X for which there are only two possibilities. The probability p for the success and the probability of 1-p for the failure, which consist of n trials.
The binomial distribution has the formula,
P(x) = ⁿCₓ pˣ (1-p)ⁿ⁻ˣ
where x : number of times for a specific outcome within n trials
p : probability of success in each trial
n : number of trials
Given that a fair die is rolled 3 times.
Here, n = 3, x = 1
p = probability of getting three for 1 trial = 1/6
1 - p = 1 - 1/6 = 5/6
P(1) = ³C₁ (1/6)¹ (5/6)³⁻¹
= 0.347
Hence the probability of getting exactly 1 three is 0.347.
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when you represent a three-dimensional object graphi- cally in the plane (on paper, the blackboard, or a com- puter screen), you have to transform spatial coordinates,
Answers
The simplest choice is a linear transformation, for example, the one given by the
matrix [tex]\left[\begin{array}{ccc}-1/2&1&0\\-1/2&0&1\end{array}\right][/tex]
What is spatial coordinates and plane coordinates?When compared to pixel coordinates, spatial coordinates provide for a finer level of image position specification. The pixel coordinate system, for example, treats a pixel as a discrete unit that is uniquely recognized by an integer row and column pair, such as (3,4). The pixel coordinates are the default way that spatial coordinates of a picture are related. In row 5, column 3, for instance, the center of the pixel has spatial coordinates of x = 3 and y = 5, for example. The coordinates are inverted, so keep that in mind.When you represent a three-dimensional object graphically in the plane con paper, the blackboard, or a computer screen), you have to transform spatial coordinates,
[tex]$\mathrm{x} 1$ & \\[/tex]
[tex]$\mathrm{x} 2$[/tex] & into plane coordinates
[tex]$\mathrm{x} 3$[/tex]& [tex]$\mathrm{y} 1$[/tex]& [tex]$\mid$ \\[/tex]
[tex]$\mathrm{x}$[/tex] &[tex]$\mathrm{y} 2$[/tex] &
The simplest choice is a linear transformation, for example, the one given by the
matrix [tex]\left[\begin{array}{ccc}-1/2&1&0\\-1/2&0&1\end{array}\right][/tex]
The complete question is,
When you represent a three-dimensional object graphically in the plane (on paper, the blackboard, or a computer screen), you have to transform spatial coordinates | x 1 | | x 2 | into plane coordinates | y 1 |. | x 3 | | y 2 | The simplest choice is a linear transformation, for example, the one given by the matrix | -1/2 1 0 0 | 1 |.
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The doctor orders 500,000 Unlts of penicillin for the patient: The capsules avallable are 200,OOUnits and 100,000 Units Wlth the fwest capsules how many capsules would be given per dosc? (____) 200,000 mo capsuics (____) 100,000 ma capsulcs
Answers
Patient needs to 500,000 unit of penicillin, then according to capsule availability we shall provide the 2 capsules of 200,000 unit and 1 capsule of 100,000 unit.
The doctor orders 500,000 unit of penicillin for the patient. the capsule available are 200,000 unit and 100,000 units.
we have to find out the number of capsules required for 500,000 unit,
let's see,
we have 200,000 unit of penicillin and 100,000 units of penicillin available,
patient need of 500,000 unit of penicillin,
so we shall provide the 2 capsule of 200,000 units of penicillin and 1 capsule of penicillin 100,000 unit to the patient,
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please answer this timed question
Answers
Answer:
50
Step-by-step explanation:
140/x = 168/60
x = 60*140/168 = 50
Answer:
50
Step-by-step explanation:
168/60=2.8
140/2.8=50
If an arrow is shot upward on Mars with a speed of 52 m/s, its height in meters t seconds later is given by y = 52t − 1.86t2. (Round your answers to two decimal places.)
(a) Find the average speed over the given time intervals. (i) [1, 2] m/s (ii) [1, 1.5] m/s (iii) [1, 1.1] m/s (iv) [1, 1.01] m/s (v) [1, 1.001] m/s
(b) Estimate the speed when t = 1. m/s
Answers
48.28 m/s is the speed .
What is the definition of a velocity simple?
The speed at which a body or object is moving determines its direction of motion. Most of the time, speed is a scalar quantity. Velocity is fundamentally a vector quantity.
The rate at which distance changes is what it is. It measures the displacement's rate of change.
Height, y = 52t - 1.86t²
Velocity = ∆y/∆t = 52 - 1.86 * 2t = 52- 3.72t
A. Average velocity = (v1 + v2)/2
(i) At t = 1, 2
Average velocity = (52 - 3.72*1 + 52 -3.72*2)/2 = 46.42 m/s
(ii) At t = 1,1.5
Average velocity = (52 - 3.72*1 + 52 - 3.72*1.5)/2 = 47.35 m/s
(iii) At t = 1,1.1
Average velocity = (52 - 3.72*1 + 52 -3.72*1.1)/2 = 48.09m/s
(iv) At to = 1, 1.01
Average velocity = (52 - 3.72*1 + 52 - 3.72*1.01)/2 = 48.26 m/s
(iv) At t = (1, 1.001)s
Average velocity = (52 - 3.72*1 + 52 - 3.72*1.001)/2 = 48.28 m/s
B. Speed at t = 1s
Velocity = 52 - 3.72 * 1 = 48.28 m/s
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Vertical angles: Which of the sets of angles are vertical angles?
a
a and b
a and c
O a and d
Ob and c
Ob and d
Oc and d
b
Answers
There are two vertical angles created by the intersection of two lines.
What is meant by vertical angles?An isosceles triangle has a vertical angle that is twice as large as the total of its base angles. Angles that are vertically opposed to one another are always equal to one another. A vertical angle and the angle to which it is next are also supplementary angles; that is, they sum up to 180 degrees. For instance, if two lines make an angle with X = 45°, the opposing angle will also be 45°.Two vertical angle pairs make up a total of four angles, which always sum to 360 degrees.Angles that come from each pair of vertical angles are referred to as neighboring angles and are additional (the angles sum up to 180 degrees).To learn more about vertical angles, refer to:
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The volume of a cylinder is 282.6 cubic yards. The radius measures 3 yards. What is the height of the cylinder rounded to the nearest yard? Use 3.14 for π. PLEASE HELP WANTED TTYY!!!
Answers
Answer:
10 yards
Step-by-step explanation:
You want the height of a cylinder of radius 3 yards that has a volume of 282.6 cubic yards, using pi = 3.14.
VolumeThe volume of a cylinder is given by ...
V = πr²h
Using the given values, this is ...
282.6 yd³ = 3.14(3 yd)²·h = 28.26h yd²
Dividing by the coefficient of h, we find it to be ...
h = (282.6 yd³)/(28.26 yd²) = 10 yd
The height of the cylinder is 10 yards.
What is the cost of 6 pencils at 60 cents a dozen
Answers
To determine the cost of 6 pencils at 60 cents a dozen, we need to convert the price per dozen to the price per pencil. We know that a dozen is equal to 12, so we can use the following formula:
Price per pencil = (Price per dozen) / (Number of items per dozen)
So, in this case:
Price per pencil = (60 cents) / (12 pencils)
To convert cents to dollars, we divide by 100.
Price per pencil = (60/100) $ = 0.6 $
To find the total cost for 6 pencils we multiply the price per pencil by the number of pencils
Cost of 6 pencils = 6 * 0.6 = 3.6 $
So the cost of 6 pencils at 60 cents a dozen is 3.6 $.
Find the mistake: Explain what the person did incorrectly while solving the problem or how you would solve it.
5x + 8 = 2x + 20
5x + 8 = 2x + 20
-2x -2x
3x + 8 = 20
-8 -8
3x = 12
times each side by 3
x = 36
Answers
Move the variable to the left hand side
5x+8-2x=20
Move the constant to the right-hand side and change its sign
5x-2x=20-8
Collect like terms
3x=20-8
3x=12
Divide both sides of the equation by 3
X=4
The Cincinnati zoo had 25 snakes last year and this year they have 30 snakes what is the percent increase in snakes from last year to this year
Answers
The percentage increase in snakes from last year to this year at the Cincinnati Zoo is 20%.
What is the percentage increase?The percentage increase refers to the ratio of the increase in the number of snakes in the zoo.
The percentage increase can be computed as the quotient of the amount of increase divided by the previous number of snakes, multiplied by 100.
The number of snakes in the zoo last year = 25
The number of snakes in the zoo currently = 30
The increase in the number of snakes = 5 (30 - 25)
The percentage increase = 20% (5/25 x 100)
Thus, we can conclude that the number of snakes in the Cincinnati Zoo has increased by 20 percent since last year.
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What is the greatest number of consecutive integers
that sum to –11? PLS NOW
Answers
Answer:
It is not possible for the sum of consecutive integers to be -11. The sum of n consecutive integers is n times the average of the first and last integers. The average of any two integers is a fraction, which when multiplied by n, will always yield a fraction, which cannot equal -11. Therefore it is not possible to have n consecutive integers that sum to -11.
andre measured the lenghts of 10 sticks to the nearest inch. the lenghts of the sticks were 3,3,4,3,3,5,4,6,5 and 4 inches
Answers
The 4th line plot picture correctly shows the data of the lengths of the sticks that were 3, 3, 4, 3, 3, 5, 4, 6, 5 and 4 inches.
What is line plot?A line plot is a graph that uses symbols to represent data above a frequency number line. It is used to arrange the data simply and is very simple to understand.
A line plot is a graphical representation of data on a number line which uses dots, crosses, or any other symbol. The scale of the graph is represented by each mark, which corresponds to a particular quantity.
The data on a number line can be graphically represented using symbols using a line plot graph. In contrast to a line graph, no cartesian plane or x and y axes are used in this data representation. Simple lines are drawn on a number line to represent a line plot graph.
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Full question:
Andre measured the lengths of 10 sticks to the nearest inch. the lenghts of the sticks were 3,3,4,3,3,5,4,6,5 and 4 inches. Click on the line plot that shows these data. Lengths of Sticks (in inches) Lengths of Sticks (in inches) Lengths of Sticks (in inches) Lengths of Sticks.
Each of 12 refrigerators of a certain type has been returned to a distributor because of the presence of a high-pitched oscillating noise when the refrigerator is running. Suppose that 5 of these 12 have defective compressors and the other 7 have less serious problems. If they are examined in random order, let X = the number among the first 6 examined that have a defective compressor. Compute the following:
(i) P(X = 1)
(ii) P(X ≥ 4)
(iii) P(1≤X ≤3)
(a) .1136, .1212 and 0.7955 respectively.
(b) .1136, .1212 and 0.1136 respectively.
(c) .1136, .1212 and 0.8712 respectively.
(d) .1136, .039 and 0.7955 respectively. (e) .1136, .039 and 0.8712 respectively.
Answers
The probability of one defective compressor among the first 6 examined, the probability of four or more defective compressors among the first 6 examined, and the probability of 1 to 3 defective compressors among the first 6 examined are 0.1136, 0.1212, and 0.7955 respectively.
(a) .1136, .1212 and 0.7955 respectively.
(i) P(X=1) = C(5,1) / C(12,6) = 5/66 = 0.1136
(ii) P(X ≥ 4) = P(X = 4) + P(X = 5) + P(X = 6) = C(5,4) / C(12,6) + C(5,5) / C(12,6) + C(5,6) / C(12,6) = .1212
(iii) P(1≤X ≤3) = P(X = 1) + P(X = 2) + P(X = 3) = C(5,1) / C(12,6) + C(5,2) / C(12,6) + C(5,3) / C(12,6) = 0.7955
The probability of one defective compressor among the first 6 examined is P(X = 1) = C(5,1) / C(12,6) = 5/66 = 0.1136. The probability of four or more defective compressors among the first 6 examined is P(X ≥ 4) = P(X = 4) + P(X = 5) + P(X = 6) = C(5,4) / C(12,6) + C(5,5) / C(12,6) + C(5,6) / C(12,6) = .1212. The probability of 1 to 3 defective compressors among the first 6 examined is P(1≤X ≤3) = P(X = 1) + P(X = 2) + P(X = 3) = C(5,1) / C(12,6) + C(5,2) / C(12,6) + C(5,3) / C(12,6) = 0.7955.
Therefore, the probability of one defective compressor among the first 6 examined, the probability of four or more defective compressors among the first 6 examined, and the probability of 1 to 3 defective compressors among the first 6 examined are 0.1136, 0.1212, and 0.7955 respectively.
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before the announcement of a three for one stock split, the selling price for a share of a stock in fossil oil refineries was 150 per share. immdeiatley afteyr the stock split, the propable price per share is
Answers
The price of the share of stock in fossil oil refineries after the three-for-one split is $50.
A stock split is an event in the stock market when the company declares split of stock into multiple parts to decrease the cost per share and make it easier to purchase.
Given,
The selling price of a stock in fossil fuel before split = $150
After one year the stock split into three parts
∴ Probable prices per share = Price before split/3
= $150/3
= $50
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Calculate the Scale Factor given the points A( 12, 4) and A' (9, 3).
Answers
The Scale Factor is 0.75, or 3/4
What is scale Factor?Scale factor is a ratio of two related lengths, areas, volumes, or other quantities. It is used to describe how a figure is enlarged or reduced in size. For example, when a figure is enlarged, the scale factor is greater than one, and when a figure is reduced, the scale factor is less than one. Scale factors can be used to calculate the lengths of sides and areas of figures when one side or area is known.
The Scale Factor is calculated by dividing the coordinates of point A' (9, 3) by the coordinates of point A (12, 4). Therefore, the Scale Factor is 0.75, or 3/4.
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question 1 fill in the blank: data aggregation involves creating a ____collection of data that originally came from multiple sources.
Answers
Data aggregation involves creating a unified collection of data that originally came from multiple sources.
It is the process of combining data from multiple sources into one file, report or summary. Data aggregation can be done using a variety of methods, such as mathematical formulas, grouping, filtering and sorting. For example, a mathematical formula can be used to calculate the average of a set of numbers. Grouping data can be used to divide data into categories and subcategories, such as by country or by product. Filtering data involves removing unnecessary or unwanted data, such as outliers or irrelevant information. Finally, sorting data can be used to organize data in a specific order, such as alphabetically or numerically. Data aggregation is a useful tool for making sense of large datasets and providing greater insight into the data.
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Teachers in a district have been teaching for a mean of 8 years with a standard deviation of 3 years, and the distribution of years teaching is strongly skewed to the right. Suppose we took random samples of 30 teachers from this district and calculated x as the sample mean of how long each group of teachers had been teaching. We can assume that the teachers in each sample are independent.
Answers
Answer:C. Approx. Normal
Step-by-step explanation:
The following inequalities form a system. y is greater than or equal to two-thirds times x plus 1 y is less than negative one-fourth times x plus 2 Which ordered pair is included in the solution to this system? (−6, 3.5) (−6, −3) (−4, 3) (−4, 4)
Answers
The ordered pair that is included in the solution to this system of inequalities is: B. (−6, −3)
How to determine the required ordered pair?In order to determine the ordered pair is included in the solution to this system of linear inequalities, we would first of all translate the word problem into an algebraic equation as follows;
y is greater than or equal to two-thirds times x plus 1 ⇒ y ≥ 2x/3 + 1.
y is less than negative one-fourth times x plus 2 ⇒ y < -x/4 + 2.
Next, we would use an online graphing calculator to graphically solve the system of linear inequalities. Therefore, the required solution for the given system of linear inequalities is the shaded area below the solid line, which is given by the ordered pair (−6, −3).
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region r is the base of a solid. for this solid, each cross section perpendicular to the x-axis is an isosceles right triangle with a leg in r. find the volume of the solid.
Answers
Without the equation of the graph of the region R, it is not possible to determine the volume of the solid defined by a region R, an isosceles right triangle cross-section, and a line y=k.
The question describes a solid where the base is a region R in the first quadrant, bounded by the graph of y, the x-axis, and the line y = k.
It is also mentioned that each cross section perpendicular to the y-axis is an isosceles right triangle with the right angle on the x-axis and one leg in the XY-plane.
However, the equation of the graph of the region R is not given, which makes it impossible to determine the range of y over which the solid is defined and therefore, calculate the volume of the solid. It's very important to have the equation of the graph of the region R to find the volume of the solid.
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The question is -
Let R be the region In the first quadrant bounded by the "graph of y the !-axis, and the line y The region R Is the base of a solid For the solid, each cross section perpendicular [tex]t_0[/tex] to the y-axis Is an isosceles right triangle with the right angle on the !-axis and one leg in the 1y-plane What is Ithe volume of the solid?
Consider a continuous-time random process, X(t), obtained as the result of a sample-and-hold operation on a noise voltage V(t). IT can be expressed analytically asX(t) = \sum_{n = - \infty }^{\infty} V(nT)h(t- nT)where T is the sampling period and h(t) is the holding pulse,h(t) = 1 \: \: \: \: \: \: 0\leq t \leq Tandh(t) = 0 \: \: \: \: \: \: otherwise
Assume that V(nT) is zero-mean for all n.
Assume that V(nT) has variance\sigma _{v}^{2}for all n.
Assume that T is large enough to render V(nT) and V([n+k]T) statistically independent for all n and for all k\neq0.
A. Find the autocorrelation of X(t).
Answers
The holding pulse is nonzero only for[tex]0 \leq t \leq T[/tex], the autocorrelation of X(t) is given by\begin{align}
[tex]R_{xx}(t,t+\tau) =[/tex]
[tex]\begin{cases}\sigma_v^2 \sum_{n=-\infty}^{\infty}\sum_{m=-\infty}^{\infty}h(t-nT)h(t+\tau-mT) & 0 \leq \tau \leq T \\0 & \text{otherwise}.\end{cases}\end{align}[/tex]
The autocorrelation of X(t) is defined as[tex]R_{xx}(t,t+\tau) = E[X(t)X(t+\tau)][/tex]where E[.] is the expectation operator. Since V(nT) has zero mean and is statistically independent, we can write
[tex]R_{xx}(t,t+\tau) &= E[X(t)X(t+\tau)]\\ &= E\left[\sum_{n=-\infty}^{\infty}V(nT)h(t-nT)\sum_{m=-\infty}^{\infty}V(mT)h(t+\tau-mT)\right]\\&= \sum_{n=-\infty}^{\infty}\sum_{m=-\infty}^{\infty}E[V(nT)V(mT)]h(t-nT)h(t+\tau-mT)\\&= \sigma_v^2 \sum_{n=-\infty}^{\infty}\sum_{m=-\infty}^{\infty}h(t-nT)h(t+\tau-mT)\end{align}[/tex]
Since the holding pulse is nonzero only for[tex]0 \leq t \leq T[/tex], the autocorrelation of X(t) is given by\begin{align}
[tex]R_{xx}(t,t+\tau) =[/tex]
[tex]\begin{cases}\sigma_v^2 \sum_{n=-\infty}^{\infty}\sum_{m=-\infty}^{\infty}h(t-nT)h(t+\tau-mT) & 0 \leq \tau \leq T \\0 & \text{otherwise}.\end{cases}\end{align}[/tex]
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P=C+MC solve for C?
Answers
All terms should be shifted to the left and set to zero. After that, make each factor equal to zero. [tex]C=\frac{P}{1+M}$$[/tex]
What is the solution of the term P=C+MC for C ?P=C+M C
As C + M C = P, rewrite the equation.
C+M C=P
Add C to the equation on both sides. .MC=P−C
Simplify M C = P C by dividing each term by C.
Divide each phrase into [tex]$M C|=| \boldsymbol{P}-\boldsymbol{C}$[/tex] by C
[tex]\frac{M C}{C C} \equiv \frac{P}{C}+\frac{-C}{C}$$[/tex]
C's common factor should be cancelled.
[tex]$M=\frac{P}{C}+\frac{-C}{C}$[/tex]
M=PC−1
An equation that is mostly made up of letters is said to be literal. Literal equations include those found in formulas. Each variable acts as a "literal" representation of an essential element of the overall relationship that the equation expresses. For instance, P = 2L + 2W is a formula for expressing a rectangle's perimeter.
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the dot product of two vectors with magnitudes of 10 and 6 is equal to 30. What is the angle formed by the vectors
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If the magnitude of two vectors is 10 and 6 and their dot product is 30, then the angle between the vectors is 60°.
What is a vector?
A vector in mathematics is a quantity that not only expresses magnitude but also motion or position of an object in relation to another point or object. Euclidean vector, geometric vector, and spatial vector are other names for it.
There are two ways to define a dot product: algebraically and geometrically. The sum of the products of the matching entries of the two number sequences is the definition of the dot product in algebra. Geometrically, it is the sum of the cosine of the angle formed by the two vectors and their Euclidean magnitudes.
The magnitude of the vector 1 is, |a| = 10
The magnitude of the vector 2 is, |b| = 6
The dot product of the two vectors is, a·b = 30.
The formula for dot product of vectors is -
a·b = |a| |b| cos θ
Solve the equation to get the angle -
30 = (10 × 6) cos θ
30 = 60 cos θ
cos θ = 30/60
cos θ = 1/2
θ = cos^-1 (1/2)
θ = 60°
Therefore, the angle is obtained as 60°.
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Asap please
Which one is correct
Answers
Answer: D. The distance from A to C
Step-by-step explanation:
This formula can be used to find the distance between two points on a three-dimensional coordinate system:
D(x, y, z) = [tex]\sqrt{(x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2} + (z_{2} - z_{1})^{2} }[/tex]
If you apply the formula for all options, you will find the distance from A to C is equal to [tex]\sqrt{5}[/tex]. The other distances are:
A. [tex]\sqrt{17}[/tex]
B. [tex]\sqrt{45}[/tex]
C. [tex]\sqrt{44}[/tex]
So, the answer is D.
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 35% salt and Solution B is 60% salt. She wants to obtain 150 ounces of a mixture that is 45% salt. How many ounces of each solution should she use?
Answers
Answers:
90 ounces of solution A.
60 ounces of solution B.
====================================================
Explanation:
x = amount of solution A
150-x = amount of solution B
Each amount is in ounces and they add to 150 ounces.
Solution A is 35% salt, so we get 0.35x ounces of pure salt from solution A.
Solution B is 60% salt, so we get 0.60*(150-x) = 90-0.60x ounces of pure salt from solution B.
We want 150 ounces of 45% salt solution, which means we want 150*0.45 = 67.5 ounces of pure salt when everything is mixed.
Here's a table showing this info
[tex]\begin{array}{|c|c|c|} \cline{1-3}& \text{Mixture} & \text{Pure Salt}\\\cline{1-3}\text{Solution A} & \text{x} & 0.35\text{x}\\\cline{1-3}\text{Solution B} & 150-\text{x} & 0.60(150-\text{x}) = 90-0.60\text{x}\\\cline{1-3}\text{Total} & 150 & 150*0.45 = 67.5 \\\cline{1-3}\end{array}[/tex]
Cleaning up the table a bit shows
[tex]\begin{array}{|c|c|c|} \cline{1-3}& \text{Mixture} & \text{Pure Salt}\\\cline{1-3}\text{Solution A} & \text{x} & 0.35\text{x}\\\cline{1-3}\text{Solution B} & 150-\text{x} & 90-0.60\text{x}\\\cline{1-3}\text{Total} & 150 & 67.5 \\\cline{1-3}\end{array}[/tex]
Focus on the "pure salt" column.
We want the 0.35x and 90-0.60x to add to 67.5
So,
0.35x+(90-0.60x) = 67.5
90-0.25x = 67.5
-0.25x = 67.5-90
-0.25x = -22.5
x = -22.5/(-0.25)
x = 90
She must use 90 ounces of solution A.
150-x = 150-90 = 60 ounces of solution B must be used as well.
-------------------
Check:
35% of 90 = 0.35*90 = 31.5 ounces of pure salt comes from solution A.
60% of 60 = 0.60*60 = 36 ounces of pure salt comes from solution B.
31.5+36 = 67.5 ounces of pure salt in total, which matches with the value mentioned earlier. The answers are confirmed.
Gombak Mega Store is having its Year-End-Sales. Ten percent, five percent and twenty percent discounts were given on shoes, handbags and watches respectively if two or more units of each item were bought. Noor bought three pairs of shoes, two units of handbag and one unit of watch. If the price (per unit) of shoes, handbag and watch is RM150, RM200 and RM250 respectively, how much money does Noor has to pay?
Answers
Answer:
$963.00
Step-by-step explanation:
.9(3x150) + .95(2x200) + 250
.9(450) + .95(400) + 250
405 + 308 + 250 = 963
If we are taking 10% off, that is like leaving 90% (.9) on.
If we are taking 5% off, that is like leaving 95% ( .95) on.
No discount for the watch because she only bought one.
