The mean and the median of the given data are 210 and 170.
What are Mean and Median?A data set's mean (average) is calculated by summing all of the numbers in the set, then dividing by the total number of values in the set. When data collection is ranked from least to greatest, the median is the midpoint. The number that appears most frequently in a data set is called the mode.
The four-hour service call costs
$30 + $40(4) = $90
(a) The given table summary details and finds the cost of the service cells
Statics Hour of service call cost of service call
Mean 4.5 30 + 40(4.5) = 210
Median 3.5 30 + 40 (3.5 = 170
SD 1.2 30 + 40 (1.2) = 78
TQR 2.0 30 + 40 (2.0) = 110
Minimum 0.5 30 + 40 (0.5) = 50
(b) The service call corresponding score is 1.50
z score = 138-4.5/1.2 = 113.75
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How do you know if a line is positive negative or undefined?
A line is positive negative or undefined as per its slope is positive negative or undefined.
The slope is the ratio of change of the dependent variable with respect to the change in the independent variable.
It is calculated for both straight lines as well as curves.
for example, let us say , we have a straight line y = mx +c , then the coefficient of the dependent variable 'm' is the slope of the line. It is also calculated by (y2-y1)/ (x2-x1) where y2, x2 are the final positions and y1,x1 are the initial positions.
So, we can say that if the slope is positive, i.e. the line extends up to right , its a positive line ; if the slope is negative, i.e. the line extends down to right , its a negative line and if the slope is undefined i.e. the change in the independent variable is zero like for a vertical line, then its an undefined line.
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Farmer Pisquet put grain into bins Y, A and P. The ratio of weight of
flour in bin Y to weight of flour in bin A was 9:3. The ratio of weight of
flour in bin A to weight of flour in bin P was 4:3. If there were 36
pounds of grain in bin A, how many pounds of grain were there
altogether?
The weight of Y = 108 pound and weight of P is 27 pound
What does the math ratio mean?
Definitions: An ordered pair of numbers a and b, represented as a / b, is a ratio if b is not equal to 0. A proportion is an equation that sets two ratios at the same value. For instance, you could express the ratio as follows: 1: 3 if there is 1 boy and 3 girls (for every one boy there are 3 girls)
Given that :
A = 36 pound
A:P =4:3
so when A is 36 = 4*9
then P is 3*9 = 27
Hence the weight of P is 27 pound
Now we have Y:A = 9:3
when A = 36 = 3*12
Then Y is 9*12 = 108
Hence weight of Y is 108 pound
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Which expression is equivalent to b-2/ab-3? assume a=0, b=0.
O a/b5
O 1/ab5
O a3b/1
O b/a
The expression b/a is equivalent to the given expression b⁻²/ab⁻³ when a≠ 0 and b ≠ 0. So, option D is correct.
What are the equivalent expressions?The two or more expressions are said to be equivalent expressions if their value is the same even if they look different.
This is the same concept as equivalent fractions.
Calculation:The given expression is b⁻²/ab⁻³.
This expression is a fraction.
Simplifying the given expression:
b⁻²/ab⁻³
we know a⁻ⁿ = 1/aⁿ
So, we can write b⁻² = 1/b² and b⁻³ = 1/b³
Then, b⁻²/ab⁻³ = (1/b²)/a(1/b³)
⇒ b⁻²/ab⁻³ = 1/b² × 1/a × b³ = b × 1/a
∴ b⁻²/ab⁻³ = b/a
Thus, the equivalent expression for the given expression is b⁻²/ab⁻³ = b/a.
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What is 2 3 times 2 as a fraction?
2 × 3 × 2 can be written as 2 × 6, so the answer is 6/1, which is an equivalent fraction to 6.
We can solve this problem by converting the expression into a fraction. First, we need to multiply 2 and 3 together, which gives us 6. Then, we need to multiply this result by 2, so we get 12. Finally, we need to express this result as a fraction. To do this, we put the numerator (12) over the denominator (1). So, the answer is 12/1, which simplifies to 4/32 × 3 × 2 can be written as 2 × 6, so the answer is 6/1, which is an equivalent fraction to 6
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What are the roots of the quadratic equation 2x² 7x +6 0 *?
The roots of the quadratic equation are 3/2 and 2.
What is a polynomial?Polynomial is an equation written as the sum of terms of the form kx^n.
where k and n are positive integers.
We have,
2x² - 7x + 6
We can find the roots by middle-term factorization.
2x² - (4 + 3)x + 6 = 0
2x² - 4x - 3x + 6 = 0
2x(x- 2) - 3(x - 2) = 0
We have,
2x - 3 = 0 and x - 2 = 0
Now,
2x = 3
x = 3/2
x - 2 = 0
x = 2
Thus,
The roots are 3/2 and 2.
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How can I verify my SSS number?
The process to verify SSS number is to submit your printed records together with the required documentary requirements
The term documentary is referred as document reality, primarily for the purposes of instruction, education or maintaining a historical record
Here we need to find the process to verify the SSS number.
In order to find that we must know the definition of SSS,
The term SSS refers an independent federal agency that administers compulsory military service.
In order to verify the SSS number, you must have the following documentaries,
Last name
Social Security Number
Date of Birth
Now, we have to do the following steps to verify the SSS number, now you have to submit these to the appropriate department to do the verification.
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The price of an apple is $1.25. If you get 20% discount, how much do you have to pay?
How do you find the horizontal and vertical asymptote of a rational function?
The vertical asymptote of a function can be determined by setting its denominator equal to zero (0) and solving for x.
The horizontal asymptote of a function can be found by determining the degrees of the numerator and denominator.
What is an asymptote?In Mathematics, an asymptote can be defined as a line which the graph of a given function approaches but would never touch. Additionally, the vertical asymptote of a function simply refers to the value of x which makes its denominator equal to zero (0).
In order to graph any rational function, you should determine the values for which it is undefined. This ultimately implies that, a function is considered as undefined when the value of the denominator is equal to zero, which represents vertical asymptote lines.
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What is the discriminant of the quadratic equation 2x 5x² 1?
The Discriminant of the quadratic equation "2x + 5x² = 1" is 24 .
The Discriminant(D) of the Quadratic Equation ax² + bx + c can be calculated using the formula ; D = b² - 4ac .
the quadratic equation is given as 2x + 5x² = 1 ;
after rearranging the terms ,
the equation can be written as :
⇒ 5x² [tex]+[/tex] 2x - 1 = 0 ;
Substituting the values in the discriminant formula ,
we get ;
D = (2)² - 4×5×(-1)
Simplifying further ,
we get ;
D = 4 + 20
D = 24 .
Therefore , the value of the Discriminant is 24 .
The given question is incomplete , the complete question is
What is the discriminant of the quadratic equation 2x + 5x² = 1 ?
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Why is the use of 0 and necessary in a measuring instrument?
In order for measuring devices to produce correct findings, they must have zero error. Zero error also makes it possible to determine if an instrument is functioning properly or not.
what is measuring instrument?Instruments used by researchers and practitioners to assist in the assessment or evaluation of subjects, clients, or patients are known as measurement tools. From physical functioning to psychosocial welfare, the tools are used to assess or gather data on a number of aspects.
Electrical instruments are one of three categories for measuring devices. Instrument for electronics. a mechanical instrument.
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does the residual plot support the appropriateness of a linear model? responses yes, because there is a clear pattern displayed in the residual plot. yes, because there is a clear pattern displayed in the residual plot. yes, because about half the residuals are positive and the other half are negative. yes, because about half the residuals are positive and the other half are negative.
Answer:
Step-by-step explanation:
Yes, the residual plot supports the appropriateness of a linear model because it displays a clear pattern and has roughly equal amounts of positive and negative residuals.
Is the residual plot relatively symmetrical around the centerline?
Yes, if the residual plot is relatively symmetrical around the centerline, it suggests that the linear model is appropriate because it is capturing the variance in the data evenly. If the residual plot is skewed or has outliers, it may indicate that the linear model is not accurately representing the data and a different model may be needed.
A residual plot is a graph that plots the residuals (the differences between the observed values and the predicted values) on the y-axis and the independent variable on the x-axis. The residual plot is used to assess the appropriateness of a linear model. If the residual plot displays a clear pattern and has roughly equal amounts of positive and negative residuals, it suggests that the linear model is appropriate. On the other hand, if the residual plot is scattered randomly or displays a clear pattern, it suggests that the linear model is not appropriate. In this case, the residual plot supports the appropriateness of a linear model because it displays a clear pattern and has roughly equal amounts of positive and negative residuals. This suggests that the linear model is able to accurately predict the dependent variable based on the independent variable.
Therefore, the residual plot supports the appropriateness of a linear model.
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Yes, because it displays a clear pattern and has roughly equal amounts of positive and negative residuals.
What is a residual plot and how does it support the appropriateness of a linear model?
A residual plot is a graphical representation of the residuals (prediction errors) of a regression model. It can be used to assess the appropriateness of a linear model by examining the pattern of the residuals and the presence of any unusual points or trends.
If the residual plot shows a clear pattern, such as a trend or curvature, it suggests that the linear model may not be appropriate for the data. On the other hand, if the residual plot appears random and shows roughly equal amounts of positive and negative residuals, it supports the appropriateness of a linear model.
The residual plot is used to judge whether a linear model is suitable. The linear model may be useful if the residual plot exhibits a distinct pattern and contains nearly equal numbers of positive and negative residuals. On the other hand, it indicates that the linear model is inappropriate if the residual plot is dispersed randomly or exhibits a distinct pattern. The residual plot shows a distinct pattern and about equal numbers of positive and negative residuals, which in this instance confirms the suitability of a linear model. This suggests that the dependent variable may be accurately predicted by the linear model utilising the independent variable.
Therefore, the residual plot confirms that a linear model is adequate.
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Select all that are equal to 5^3 x 5^-7
1/5^-4
1/5^4
5^-4
5^4
1/-625
Answer:
5^-4
1/-625
Step-by-step explanation:
5^3 x 5^-7
They have the same base is 5, which means we just need to add the root, so 3 + (-7) = -4, so the answer is 5^-4
5^ -4
5 times 5 times 5 times 5 = -625
Because it is a negative exponent, means it is a fraction. So, the answer is
1/ -625
A real estate agent, working entirely on commission, makes a weekly average of $850 with da
standard deviation of $260 selling property in the city, and an average of $1340 with a standard
deviation of $390 selling property in the suburbs. Assuming independence, what are the mean and
standard deviation of her total weekly sales?
If the real estate agent's average weekly sales are $850 in the city and $1340 in the suburbs, then her total average weekly sales are $850 + $1340 = $2190.
The standard deviation of her weekly sales in the city is $260, and the standard deviation of her weekly sales in the suburbs is $390. If the sales in the city and the suburbs are independent, then the standard deviation of her total weekly sales is the square root of the sum of the squares of the standard deviations of her weekly sales in the city and the suburbs, which is the square root of $260^2 + $390^2 = $67600 + $152100 = $219100. This is equal to $468.
Therefore, the mean and standard deviation of the real estate agent's total weekly sales are $2190 and $468, respectively.
which inequality matches the graph 1,0,-1,-2,-3
3x+1>4
3x+1≥4
3x+1<4
3x+1≤4
In the inequality 3x + 1 ≤ 4 at x = {1, 0, -1, -2, -3} all the values are satisfied therefore, the graph matches with this inequality.
What is Linear Inequality?
A linear inequality is a mathematical inequality that incorporates a linear function. A linear inequality contains one of the inequality symbols. It displays data that is not equal in graph form.
Solution:
To find the answer we need to put the values of x in options
3x + 1 ≤ 4
Putting x = {1, 0, -1, -2, -3}
At x = 1
3*1 + 1 ≤ 4
At x = 0
3*0 + 1 ≤ 4
At x = -1
3*-1 + 1 ≤ 4
At x = -2
3 * -2 + 1 ≤ 4
At x = -3
3*-3 + 1 ≤ 4
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What is base in math formula?
The base in math formula is the sum that is multiplied when an exponent is used.
In mathematics, a base is a group of digits that are used to represent numbers. Different number systems employ various digit combinations as their base.
Depending on the situation, the word "base" can signify many things. The word "base" typically refers to the first component, core component, or base layer of a supporting structure.
The total number of digits a number system uses to express numbers is known as base in mathematics. The term "radix" is sometimes used to describe a number system's base.
Examples: In the expression 62, the base is 6, and the answer is 6 × 6 = 36.
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Which table represents exponential growth? a 2-column table has 4 rows. The first column is labeled x with entries 1, 2, 3, 4. The second column is labeled y with entries 2, 4, 6, 8. A 2-column table has 4 rows. The first column is labeled x with entries 1, 2, 3, 4. The second column is labeled y with entries 2, 4, 8, 16.
The table that represents exponential growth is the second table.. The second column is labeled y with entries 2, 4, 6, 8. A 2-column table has 4 rows.
What is exponential growth?
Exponential growth simply means a process that increases quantity over time. It occurs when the instantaneous rate of change of a quantity with respect to time is proportional to the quantity itself.
Exponential growth is the pattern of data which shows sharper increases over time. In finance, compounding creates exponential returns and the savings accounts with a compounding interest rate can show exponential growth.
In this case, the second table described represents an exponential function. It has a common ratio of 4, meaning that each y-value is multiplied by 4 to get to the next value. Here, every time the Xs increase by 1, the Ys increase by a multiple of 4.
One of the best examples of exponential growth is observed in bacteria. Here, it takes bacteria roughly an hour to reproduce through prokaryotic fission. This illustrates exponential growth.
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Step-by-step explanation:
Is a rhombus a 2 D shape?
Answer: yes
Step-by-step explanation: it is a 2 dimensional shape if it was 3d it would end up being a prism
Describe a real world situation that could be modeled by the expression Y equals 1/20 XP transcribe what is
The required real-world situation has been written in the solution part which could be modeled by the expression Y equals 1/20 XP.
A real-world situation that could be modeled by the expression Y = 1/20XP is the relationship between the distance a person runs and the number of calories they burn.
In this situation, Y represents the number of calories burned and X represents the distance run in miles. The constant 1/20 represents the rate at which calories are burned per mile.
For example, if a person runs 5 miles, we can substitute 5 for X in the expression to find the number of calories they burn:
Y = 1/20 × 5X
Y = 1/4
Thus, the person burns 1/4 calorie for every mile they run.
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When the coordinates 1 1 4 4 7 1 and 4 − 2 are joined which shape is formed 5 points group of answer choices parallelogram rectangle trapezoid Square?
Given the provided coordinates of the points, The shape that is formed is a parallelogram because the slopes of the opposite sides are same.
What do you mean by slope?In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction. Divide the difference in elevation between two points by the distance between them to find the percent slope, then multiply the result by 100. The term "rise" refers to the difference in elevation between two sites. The run is the separation between the points. Percent slope is therefore equal to (rise / run) x 100.
What do you mean by coordinates?A coordinate system in geometry is a method for determining the precise location of points or other geometrical objects on a manifold, such as Euclidean space, using one or more numbers, or coordinates.
slope between (1,1) and (4,4),
m1 = 4-1/4-1 =3/3 =1
slope between (4,-2) and (7,1),
m2= 1+2/7-4 = 3/3 =1
m1=m2
similarly, slope between (1,1) and (4,-2),
m3= -2-1/4-1 = -3/3 =-1
slope between (7,1) and (4,4)
m4= 1-4/7-4 = -3/3 =-1
m3=m4
So, slopes of opposite sides are same that means they are parallel, The shape is parallelogram.
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Múltiple representación
The given data is used to obtain the equation as y = x - 2 and the table and graph has been drawn clearly.
How to write the equation of a straight line in slope-intercept form?A straight line can be written in the slope-intercept form as, y = mx + c.
In order to obtain the slope, the ratio of the difference of the coordinates are taken and c is the y-intercept which can be found by substituting x = 0 in the equation.
The data is given as below,
slope = 1 and y-intercept = -2.
The equation, graph and table for the given data can be formed as follows,
(a) The slope-intercept equation is y = mx + c, where m is the slope and c is the y-intercept.
Substitute the corresponding values to obtain,
y = 1 × x + (-2)
= x - 2
(b) The graph for the given equation is plotted below as,
(c) The table for the given equation can be formed with different values of x and y as below,
y = x - 2
Substitute x = 0 to get y = -2, x = 1, y = -1 and x = 2, y= 0.
Now, the table can be formed as below,
Hence, the equation is given as y = x - 2 and the graph and table for the equation is drawn properly.
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A 12 -foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 10 feet from the base of the building. How high up the wall does the ladder reach?
The height of the wall where the ladder reaches will be 6.33 feet.
What is a Pythagoras theorem?It communicates that the area of the square whose side is the hypotenuse is identical to how much the locale of the squares on the other various sides.
The Pythagoras theorem formula is given as
H² = P² + B²
A 12-foot ladder is set against a vertical mass of construction, with the lower portion of the ladder staying on level ground 10 feet from the underpinning of the design.
The height of the wall where the ladder reaches will be calculated as,
12² = P² + 10²
144 = P² + 100
P² = 44
P =6.33 feet
The level of the wall where the stepping stool arrives freely will be 6.33 feet.
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What is 3 divided by 6 as a fraction
Answer: [tex]\frac{3}{6}[/tex]
Step-by-step explanation:
[tex]Three\ divided\ by\ 6\ is\ \ \frac{3}{6} \ or\ simplified\ to\ \frac{1}{2}[/tex]
Answer: 3/6 = 0.5
Step-by-step explanation: Divide 3 divided by 6 as a fraction and that should give you 0.5 if your teacher tells you the answer cannot be a decimal then the answer will be 12 or if he tells u to simplify then the answer wil be 1/2
1/3x-3+4=10 solve for x
Answer:
x = 27
Step-by-step explanation:
[tex] \frac{1}{3}x - 3 + 4 = 10[/tex]
[tex] \frac{1}{3}x + 1 = 10 [/tex]
multiply both sides by (3)
[tex]3 \times \frac{1}{3}x + 3 \times 1 = 3 \times 10[/tex]
x + 3 =30
x = 30–3
x = 27
i hope i helped
How many circles are drawn?
we can draw in finite number circle from one point. so there are n number of possibility to draw circle from on given single point.
what is circle?
Every point in the plane that is a certain distance away from a certain point forms a circle (center). It is, thus, a curve formed by points moving in the plane at a fixed distance from a point. A circle is a closed two-dimensional object where every pair of points in the plane are equally spaced out from the "center." A line that goes through the circle creates a specular symmetry line. At every angle, it is also rotationally symmetric about the center.
Area of circle =
[tex]\pi r^2\\r = 10\\A = 3.14 X 20 X 20\\A = 628unit sq\\[/tex]
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how do you simplify 75 65/1000
if the variance between treatments increases and the variance within treatments decreases, what will happen to the f-ratios and the likelihood of rejecting the null hypothesis in an anova test?
When the null hypothesis is rejected, the F-ratio and probability of rejection both rise.
The F-ratio is calculated using the formula F = variance between treatments/variety within treatments. An increase in the numerator will raise the F-ratio, while a reduction in the denominator will raise it even further. The probability of rejecting the null hypothesis rises with increasing F.When the null hypothesis is rejected, the F-ratio and probability of rejection both rise.
The null hypothesis for an ANOVA test is that the means of the different groups are equal. If the F-ratio is high enough (i.e., if it is significantly different from 1), then it is likely that the means of the different groups are indeed different. Therefore, if the variance between treatments increases and the variance within treatments decreases, then the F-ratio will be higher, and the likelihood of rejecting the null hypothesis will be greater.
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Just need help with 21-23 missed lessons and it’s not making any sense
In a survey of students about favorite sports, the results include 34 who like tennis, 37 who like football, 17 who like tennis and football, 21 who like tennis and baseball, 25 who like football and baseball, 9 who like all three sports, and 7 who like none of the sports. How many students like only tennis and football?
please help me on this ;-;
8 students like only tennis and football. When, In a survey of students about favorite sports, the results include 34 who like tennis, 37 who like football, 17 who like tennis and football, 21 who like tennis and baseball, 25 who like football and baseball, 9 who like all three sports, and 7 who like none of the sports.
Define algebra.One of the earliest areas of mathematics that deals with number theory, geometry, and analysis is algebra. Algebra is also defined as the study of mathematical rules and symbols through the manipulation of those mathematical symbols. The area of mathematics known as algebra is used to portray situations or problems using mathematical expressions. In algebra, we utilize integers with fixed or definite values, such as 2, 7, 0.068, etc. In algebra, we combine integers with variables like x, y, and z.
Given
Number of student who only likes tennis and football
= number of student likes only tennis and football - who like all three sports
= 17 - 9
= 8
8 students like only tennis and football. When, In a survey of students about favorite sports, the results include 34 who like tennis, 37 who like football, 17 who like tennis and football, 21 who like tennis and baseball, 25 who like football and baseball, 9 who like all three sports, and 7 who like none of the sports.
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Carter is ordering a taxi from an online taxi service. The taxi charges $2.50 just for
the pickup and then an additional $2 per mile driven. How much would a taxi ride
cost if Carter is riding for 7 miles? How much would a taxi ride cost that is m miles
long?
Answer:
$16.50
Step-by-step explanation:
y=mx+b
y is total cost, m is the miles, x is the cost per mile driven, and b is the pickup charge.
y=(7 miles x $2) + $2.50
y= $16.50
Answer:
Step-by-step explanation:
y=(7 miles x $2) + $2.50
y= $16.50
State whether the product of √3 and √9 is rational or irrational. Explain your answer. I’ll mark brainliest
Answer: √3 is irrational whereas √9 is rational
Step-by-step explanation:
3x3=9. 3^2=9. but, ?x?=3 and ?^2=3. there is no number for that
The product of [tex]\sqrt{3}[/tex] and [tex]\sqrt{9}[/tex] is irrational
•
An irrational number is a type of real number which cannot be represented as a simple fraction and [tex]\sqrt{3}[/tex] falls under this category. As fractions are just ratios, being multiplied by another number will not affect the ratio, thus making the product irrational.