Given that we have a linear equation being also directly proportional, we conclude that the graph of the equation crosses the x-axis at the origin of the Cartesian plane.
Where does a linear equation cross the x-axis?
Traditionally, a Cartesian plane is generated by two orthogonal axes, a horizontal (x-axis) and a vertical (y-axis). The origin is the point of intersection of the two axes. Linear equations that are directly proportional always cross the x-axis at origin.
y ∝ x
y = k · x (1)
Where k is the proportionality constant.
If we know that y = 0, then we find by (1) that x = 0. Hence, it is true that the graph of the equation cross the x-axis.
To learn more on linear equations: https://brainly.com/question/2263981
#SPJ1
Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
A fashion photographer needs to hire a stylist to prepare his models. Jayla charges $156 for showing up, plus $63 per hour. Sally charges $158 plus $62 per hour. The photographer realizes that, given the expected duration of his photo shoot, either stylist would cost him the same amount. What would the cost be? What would the duration be?
Either stylist would cost $ if the shoot lasted. hours
The duration of shoot would be 2 hours and Either stylist would cost $282 if the shoot lasted 2 hours.
A fashion photographer needs to hire a stylist to prepare his models.
Let the number of hours stylist take = x
Jayla charges $156 for showing up, plus $63 per hour. So, this can be mathematically written as ,
156 + 63x equation 1
Sally charges $158 plus $62 per hour. So, this can be mathematically written as ,
158 + 62x equation 2
As per the question, the expected duration of his photo shoot, either stylist would cost him the same amount. So we can equate equation 1 and equation 2. On equating equation 1 and equation 2 , we will get
156 + 63x = 158 + 62x
⇒ x = 2
So, the duration would be 2 hours.
Jayla cost = Sally cost = 156 + 63x = 156 + (63 × 2) = 282
Either stylist would cost $282 if the shoot lasted 2 hours.
To know more about Mathematical Expressions refer to the link:
https://brainly.com/question/1852123
#SPJ1
Can someone answer this for me please?
x2+8 so the second one Step-by-step explanation:
Bethany is making trail mix with 3 cups of raisins for every 2 cups of peanuts. Which table represents this proportional relationship?
A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 3, 12, 16. Column 2 is labeled Raisins (y) with entries 2, 8, 12.
A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 2, 3, 6. Column 2 is labeled Raisins (y) with entries 8, 12, 24.
A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 3, 8, 12. Column 2 is labeled Raisins (y) with entries 2, 16, 24.
A 2-column table with 3 rows. Column 1 is labeled Peanuts (x) with entries 2, 8, 12. Column 2 is labeled Raisins (y) with entries 3, 12, 18.
Answer:
Table 4 is the answer. Step-by-step explanation: Bethany is making trail mix with 3 cups of raisins for every 2 cups of peanuts. So, the ratio of peanuts to raisins is 2 : 3.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
GOT IT RIGHT edge 2021
SS = a. (df)(s^2)b. (df)(s)c. (n)(s^2)d. (n)(s)
Decomposition is used to perform ANOVA and test the significance of the independent variable and its interaction effect on the dependent variable.
The expression SS stands for "sum of squares", which is a statistical concept used in analysis of variance (ANOVA) to quantify the variation in a dataset. The components of this expression, a, b, c, and d, represent different sources of variation in the dataset, and their meanings are as follows:
a. (df)(s^2): This component represents the sum of squares due to the effect of the independent variable, also known as the factor or treatment. It is calculated by multiplying the degrees of freedom (df), which is the number of levels of the factor minus one, by the variance of the data within each level (s^2). This component quantifies the amount of variation in the dependent variable that can be explained by the independent variable.
b. (df)(s): This component represents the sum of squares due to the interaction between the independent variable and other factors, also known as the interaction effect. It is calculated by multiplying the degrees of freedom (df) by the standard deviation (s) of the data. This component quantifies the amount of variation in the dependent variable that is due to the joint effect of the independent variable and other factors.
c. (n)(s^2): This component represents the sum of squares due to the variation within groups, also known as the error or residual sum of squares. It is calculated by multiplying the sample size (n) by the variance of the data within each group (s^2). This component quantifies the amount of variation in the dependent variable that is not explained by the independent variable or other factors.
d. (n)(s): This component represents the sum of squares due to the variation between the sample mean and the overall mean, also known as the total sum of squares. It is calculated by multiplying the sample size (n) by the standard deviation (s) of the data. This component quantifies the total amount of variation in the dependent variable.
In summary, the expression SS = a. (df)(s^2) + b. (df)(s) + c. (n)(s^2) + d. (n)(s) represents the decomposition of the total sum of squares into its components due to the independent variable, interaction effect, error, and total variation. This decomposition is used to perform ANOVA and test the significance of the independent variable and its interaction effect on the dependent variable.
To learn more about significance visit:
https://brainly.com/question/31037173
#SPJ11
For which set of data points (1-20 or 21-50) is it more important to avoid classification errors?
Based on the classification error expression, the set of data points that it is more important to avoid classification errors for is 21 - 50.
Which set of data points is prone to classification errors?The set of data that one has to be careful in to avoid classification errors is the 21 - 50 set because of its multiplier for classification errors.
This multiplier for classification errors is 200 for the set, 21 - 50 which means that a classification would be much larger in this set than the 1 - 20 set where the multiplier is 5.
Rest of the question is:
∑20=15×{0,1−(∑=1+0)} +∑50=21200×{0,1−(∑=1+0)}
Find out more on classification errors at https://brainly.com/question/20885004
#SPJ4
Can a relationship be proportional and linear at the same time?
Answer:
relationship between variable can be linear, non-linear, proportional or non-proportional.
Drag each equation to the correct location on the table.
Which equations have one solution and which have infinitely many solutions?
Answer: The 1st one is 1 soultion the 2nd one is 1 soultion the 3rd one is multiple soultion and the last one is multiple solution
Step-by-step explanation: hope I am right?
1=one 2=multiple 3=one 4=multiple
The number of observations in a complete data set having 10 elements and 5 variables is _____ ... a. data b. variables c. elements d. variables and elements.
The number of observations in a complete data set with 10 elements and 5 variables is a. data.
In the context of data analysis, a complete data set refers to a collection of data that includes all the required observations or cases. In this scenario, the data set consists of 10 elements, which represent the individual observations or data points. Each element is associated with 5 variables, which are the characteristics or attributes being measured or observed.
Therefore, the number of observations in this data set is determined by the number of elements, which is 10. The term "observations" refers to the individual data points or cases in the data set. The other options, such as "variables" and "elements," do not accurately represent the count of observations in this context.
Hence, the correct answer is a. data, indicating that the number of observations in the complete data set is determined by the number of elements, which in this case is 10
To know more about data sets, visit:
brainly.com/question/29011762
#SPJ11
Event A occurs with probability of 0.3 and event B occurs with probability 0.4. If A and B are independent, we may conclude that P (B/A) = 0.4. P (A and B) = 0.12. P (A/B) = 0.3. P (A or B) = 0.58. all of the answers are correct.
If A and B are independent, then the correct statements are P(A and B) = 0.12 and P(A or B) = 0.58.
Which statements regarding the probabilities of events A and B are correct when they are independent?Let's evaluate each statement:
P(B/A) = 0.4:
This statement is incorrect. If events A and B are independent, the occurrence of event A does not affect the probability of event B.
Therefore, P(B/A) would still be equal to the probability of B, which is 0.4 in this case.
P(A and B) = 0.12:
This statement is correct. The probability of the intersection of independent events A and B is calculated by multiplying their individual probabilities. In this case, P(A and B) = P(A) * P(B) = 0.3 * 0.4 = 0.12.
P(A/B) = 0.3:
This statement is incorrect. If events A and B are independent, the occurrence of event B does not affect the probability of event A. Therefore, P(A/B) would still be equal to the probability of A, which is 0.3 in this case.
P(A or B) = 0.58:
This statement is incorrect. To calculate the probability of the union of two events, we need to consider whether the events are mutually exclusive or not.
If events A and B are independent, but not mutually exclusive, we can calculate P(A or B) as P(A) + P(B) - P(A and B). In this case, P(A or B) = 0.3 + 0.4 - 0.12 = 0.58.
Therefore, the correct statements are:
P(A and B) = 0.12P(A or B) = 0.58The statements regarding P(B/A) = 0.4 and P(A/B) = 0.3 are incorrect in the context of independent events A and B.
Learn more about probability and independent events
brainly.com/question/3742321
#SPJ11
wich equation best represents the relationship between x and y in the graph
Answer:
it's a negative slope
Step-by-step explanation:
I hope this helps
Find the x- and y-intercepts of the graph of the linear equation.
2x+3y=12
Answer:
y intercept: (0, 4); x intercept: (6, 0)
Step-by-step explanation:
to find the x and y intercepts of the line we can plug numbers in
we can turn x into 0 to find the y intercept
2(0) + 3y = 12
0 + 3y = 12
y = 4
this means that your y intercept is (0, 4)
then we can turn y into 0 to find the x intercept
2x + 3(0) = 12
2x + 0 = 12
x = 6
this means that your x intercept is (6, 0)
Find three consecutive even integers such that their sum decreased by 34 is equal to the first integer. Find the first integer.
Answer:
The first number: 14
The second number: 16
The third number: 18
Step-by-step explanation:
Equations
Let's assume:
x=the first even number.
x+2=the second even number
x+4=the third even number
The sum of all three is: x + x + 2 + x + 4
The condition states the sum decreased by 34 equals the first number:
x + x + 2 + x + 4 - 34 = x
Moving all the variables to the left side and the numbers to the right side:
x + x + 2 + x + 4 - 34 - x = 34 - 2 - 4
Simplifying:
2x = 28
Solving:
x = 28 / 2 = 14
The first number: 14
The second number: 16
The third number: 18
A bank is going to hire 5 new employees. There are 12 applicants. Which ratio represents the number of applicants to new employees?
Answer:
12:5
Step-by-step explanation:
Suppose that $2000 is invested at a rate of 3.6%, compounded monthly. Assuming that no withdrawals are made, find the total amount after 7 years.
Answer:
$2572.22
Step-by-step explanation:
You want the value of an investment of $2000 after 7 years when it earns interest at 3.6% compounded monthly.
Compound interestThe formula for the account value earning compound interest is ...
A = P(1 +r/n)^(n·t)
ApplicationYou have P=2000, r=0.036, n=12, t=7, so the account value is ...
A = $2000(1 +0.036/12)^(12·7) ≈ $2572.22
a jogger runs around a circular track of radius 50ft. let (x,y) be her coordinates, where the origin is the center of the track. when the jogger's coordinates are (30,40), her x coordinate is changing at a rate of 11 ft/s/ find dy/dt.
Answer:
-33/4 ft/s
Step-by-step explanation:
\(x^2+y^2=2500 \\ \\ 2x \frac{dx}{dt}+2y \frac{dy}{dt}=0 \\ \\ x\frac{dx}{dt}+y \frac{dy}{dt}=0 \\ \\ (30)(11)+40 \frac{dy}{dt}=0 \\ \\ \frac{dy}{dt}=-\frac{33}{4}\)
how to find vertical asymptotes of a rational function
To find the vertical asymptotes of a rational function, we need to set the denominator equal to zero and solve for x.
To find the vertical asymptotes of a rational function, you need to determine the values of x that make the denominator of the function equal to zero.
Let's check the limit of our example function as x approaches each of the vertical asymptotes:
As x approaches 1 from the left side: f(x) approaches negative infinity
As x approaches 1 from the right side: f(x) approaches positive infinity
Therefore, x = 1 is a valid vertical asymptote.
As x approaches 3 from the left side: f(x) approaches positive infinity
As x approaches 3 from the right side: f(x) approaches negative infinity
Therefore, x = 3 is also a valid vertical asymptote.
The values of x that make the denominator zero are the vertical asymptotes of the function.
To know more about function here
https://brainly.com/question/28193995
#SPJ4
1st Equation
2nd Equation
3rd Equation
2+ 3 = 5
9 + (-1) = 8
11 to x = 7
3 + 2 = 5
8+1=9
5-3 = 2
1-(-8)=9
5- 2 + 3
8-9=1
Answer:2nd
Step-by-step explanation:
help help help help need to pass this
Answer:
0.25
Step-by-step explanation:
t/4+16=17
t=(17-16)/4
=0.25
what does 1/2 Equivalent to.
A water tank at Camp Newton holds 1200 gallons of water at time t = 0. During the time interval Osts 18 hours, water is pumped into the tank at the rate
W(t) = 95Vt sin^2 (t/6) gallons per hour During the same time interval water is removed from the tank at the rate R(t) = 275 sin^2 (1/3) gallons per hour a. Is the amount of water in the tank increasing at time t = 15? Why or why not?
b. To the nearest whole number, how many gallons of water are in the tank at time t = 18? c. At what time t, for 0 st 18, is the amount of water in the tank at an absolute minimum? Show the work that leads to your conclusion d. For t > 18, no water is pumped into the tank, but water continues to be removed at the rate R(C) until the tank becomes empty. Write, but do not solve, an equation involving an integral expression that can be used to find the value of k.
(a)The amount of water in the tank is increasing.
(b)Evaluate \(\int\limits^{18}_0(W(t) - R(t)) dt\) to get the number of gallons of water in the tank at t = 18.
(c)Solve part (b) to get the absolute minimum from the critical points.
(d)The equation can be set up as \(\int\limits^k_{18}-R(t) dt = 1200\) and solve this equation to find the value of k.
What is the absolute value of a number?
The absolute value of a number is its distance from zero on the number line. It represents the magnitude or size of a real number without considering its sign.
To solve the given problems, we need to integrate the given rates of water flow to determine the amount of water in the tank at various times. Let's go through each part step by step:
a)To determine if the amount of water in the tank is increasing at time t = 15, we need to compare the rate of water being pumped in with the rate of water being removed.
At t = 15, the rate of water being pumped in is given by \(W(t) = 95Vt sin^2(\frac{t}{6})\) gallons per hour. The rate of water being removed is \(R(t) = 275 sin^2(\frac{1}{3})\) gallons per hour.
Evaluate both rates at t = 15 and compare them. If the rate of water being pumped in is greater than the rate of water being removed, then the amount of water in the tank is increasing. Otherwise, it is decreasing.
b) To find the number of gallons of water in the tank at time t = 18, we need to integrate the net rate of water flow from t = 0 to t = 18. The net rate of water flow is given by the difference between the rate of water being pumped in and the rate of water being removed. So the integral to find the total amount of water in the tank at t = 18 is:
\(\int\limits^{18}_0(W(t) - R(t)) dt\)
Evaluate this integral to get the number of gallons of water in the tank at t = 18.
c)To find the time t when the amount of water in the tank is at an absolute minimum, we need to find the minimum of the function that represents the total amount of water in the tank. The total amount of water in the tank is obtained by integrating the net rate of water flow over the interval [0, 18] as mentioned in part b. Find the critical points and determine the absolute minimum from those points.
d. For t > 18, no water is pumped into the tank, but water continues to be removed at the rate R(t) until the tank becomes empty. To find the value of k, we need to set up an equation involving an integral expression that represents the remaining water in the tank after time t = 18. This equation will represent the condition for the tank to become empty.
The equation can be set up as:
\(\int\limits^k_{18}-R(t) dt = 1200\)
Here, k represents the time at which the tank becomes empty, and the integral represents the cumulative removal of water from t = 18 to t = k. Solve this equation to find the value of k.
To learn more about the absolute value of a number from the link
https://brainly.com/question/24368848
#SPJ4
in mathematics the nth harmonic number is defined to be
The nth harmonic number is defined as the sum of the reciprocals of the first n positive integers. We can calculate the nth harmonic number using the formula Hn=1+1/2+1/3+...+1/n.
Sure, I'll be glad to help you out!In mathematics, the nth harmonic number is defined as the sum of the reciprocals of the first n positive integers.
The nth harmonic number is defined to be:
$$H_n=1+\frac{1}{2}+\frac{1}{3}+\cdots+\frac{1}{n}$$
Now, to understand the concept in detail.
For this purpose, let's consider an example:
If we want to find the 5th harmonic number, then we use the formula as shown below:
$$H_5=1+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}$$
Simplifying the above expression we get:
$$H_5=\frac{1}{1}+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}$$$$\frac{1}{1}+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}=\frac{60}{60}+\frac{30}{60}+\frac{20}{60}+\frac{15}{60}+\frac{12}{60}$$$$
=\frac{137}{60}$$
Therefore, the 5th harmonic number is 2.2833.
Now, The nth harmonic number is defined as the sum of the reciprocals of the first n positive integers. We can calculate the nth harmonic number using the formula Hn=1+1/2+1/3+...+1/n.
To know more about reciprocals, visit
https://brainly.com/question/15590281
#SPJ11
How many pairs of angles are marked as congruent in the figures below?
pls answer real quick 20 points!!!!!!
Answer:2
Step-by-step explanation:According to the diagram,there is a single angle marking for one pair of angles V and M,a double angle marking for angles X and L.
Answer:
I got C. 2
Step-by-step explanation:
I finished the test ( :
what’s the answer ??
Answer:
Left box: 1/2n
Right box = 2n - 22
Step-by-step explanation:
Since we want one-half the number and n represents the unknown number, we have 1/2n on the left-hand side of the equation.
Thus, you want to put 1/2n in box on the left.
Twice the number and 22 less than this is given by: y: 2n - 22 less than this means we subtract. Thus, we have 2n - 22 as the numerator on the right hand side of the equation.
Thus, you want to put 2n - 22 in the box on the right.
what is the slope of the line shown?
Answer:
right angle
Step-by-step explanation:
because the bottom right looks empty
find c for this equation!
ab + c = d
Answer:
c=d-ab
Step-by-step explanation:
ab+c=d
move over to the other side
change sides change signs
c=d-ab
Answer:
c=d−ab
Subtract ab from both sides of the equation
In ΔABC, ∠A = 50° and the external bisectors of ∠B and ∠C meet at O as shown in figure. The measure of ∠BOC is
Answer:
17
Step-by-step explanation:
Look at Triangle ABC, The rays meet at line BC and they are both from the interior point A. So this means that AB=AC. This makes ABC a isosceles triangle. Using the isosceles triangle theorem, Angle B and Angle C measure is equal to each other so
\(50 + x + x = 180\)
\(50 + 2x = 180\)
\(2x = 130\)
\(x = 65\)
This means angle b and C of the triangle ABC measure is 65.
External bisector bisect a figure that it makes the original angle split into half that they are equal to each other.
This means the angle below Angle B and angle C measure is 32.5. We can find the measure of Angle B and C in triangle BOC. This is a isosceles triangle as well so
\(32.5 + 65 + x = 180\)
\(98.5 + x = 180\)
\(x = 81.5\)
Angle C is 81.5 as well so
\(81.5 + 81.5 = 163\)
Find angle o
\(180 - 163 = 17\)
What is the difference between a null hypothesis and an experimental hypothesis?
A null hypothesis, which is used as the starting point for testing a hypothesis, states that there is no link between two measurable occurrences. An experiment's design uses an experimental hypothesis, which is a claim that specifies the relationship between two measurable events.
A claim or hypothesis known as a null hypothesis implies that no statistical significance can be found in a particular collection of observations. It is typically employed in statistical tests to ascertain if an experiment's outcomes are the result of chance or an underlying factor.
An experimental hypothesis is a claim that suggests a potential explanation for a phenomenon that has been observed or makes a prediction about how an experiment might turn out. It is typically used in experiments to make predictions about what the experiment will reveal.
To learn more about null and experimental hypothesis link is here
brainly.com/question/2355530
#SPJ4
can someone help with this?
Answer:
it would be 86 degrees
Step-by-step explanation:
they are congruent by being opposite
brainiest please
Which expression would you use to determine the UNIT RATE of 15 miles/gallon? (5 points)
Group of answer choices
four gallons over sixty miles
sixty miles over four gallons
three gallons over thirty miles
thirty miles over three gallons
Answer:
60 Miles over 4 Gallons
Step-by-step explanation:
I had this answer on my test as well, and got the answer correct!
A single number that estimates the value of an unknown parameter is called a _______ estimate.
Answer:
A single number that estimates the value of an unknown parameter is called a point estimate.
Step-by-step explanation:
Don't see the point (haha) of elaborating