PLEASE SOMEONE HELP ME!!!!! PLEASE THIS IS FOR MY TEST WHICH IS DUE AT 10:59PM!!!!
Julian makes and sells wallets. He estimates that his income can be modeled by y=18x−144 , where x is the number of wallets he sells. He estimates that his costs to make the wallets can be modeled by y=7x+164 . How many wallets does Julian need to make in order to break even?
Answers
Answer:
Step-by-step explanation:
"to break even" means that the money he made and the money he spent was the same amount. In both equations, the x stands for the number of wallets. Basically, you need to solve the system of equations. They are both equal to y, so set them equal to each other:
18x - 144 = 7x + 164
Subtract 7x from both sides to get your x term only on one side of the equation
11x - 144 = 164
Add 144 to both sides
11x = 308 Divide both sides by 11
x = 28
This means Julian the wallet guy breaks even when he makes and sells 28 wallets. He doesn't make any money, but he also doesn't lose any money.
Related Questions
The sales tax for an item was $37.80 and the cost $420 before tax find a sales tax rate rate your answer as a percentage
Answers
Step 1
State the for the sales tax rate
\(\frac{sales\text{ tax}}{cost\text{ of item before tax}}\)where
\(\begin{gathered} \text{sales tax=\$37.80} \\ \cos t\text{ of the item before tax=\$420} \end{gathered}\)Step 2
Get the sales tax rate in percentage by substitution
\(\begin{gathered} =\frac{37.80}{420}=0.09 \\ \text{Convert to percentage} \end{gathered}\)\(\begin{gathered} 0.09\times100=9^{}\text{\%} \\ \end{gathered}\)what is the equation of that is perpendicular 1/2 x + 2 and passes through the point (1,3)
Answers
Answer:
y = -2x + 5
Step-by-step explanation:
In order to be perpendicular to a given line, the other line must have an opposite reciprocal slope.
\(y-3=-2(x-1)\\y-3=-2x+2\\y=-2x+5\)
Why are unequal class intervals sometimes used in a frequency distribution? a) For the sake of variety in presenting the data. b) To avoid the need for midpoints. c) To make the class frequencies smaller. d) To avoid a large number of classes with very small frequencies.
Answers
The correct answer is d) To avoid a large number of classes with very small frequencies.
Unequal class intervals are sometimes used in a frequency distribution to avoid a large number of classes with very small frequencies. This can occur when the data range is very large or when there is a lot of variability in the data.
For example, if we have a dataset with values ranging from 0 to 1000, using equal class intervals of size 100 would result in 10 classes. However, if the data is skewed and most of the values fall in the lower range, many of the classes may have very small frequencies. Using unequal class intervals can help group the data in a way that results in more meaningful class frequencies.
Additionally, unequal class intervals can be used to better represent the distribution of the data. For example, if there is a cluster of values around a certain range, using a smaller class interval around that range can provide more detail and information about the data distribution.
Therefore, the correct answer is d) To avoid a large number of classes with very small frequencies.
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What is the equation of the line ?
Answers
Which of the following is equivalent to the expression below?
3(5-2i)
Answers
Answer: 15 - 6i
Step-by-step explanation:
3(5-2i)
3×5+3×(−2i)
Do the multiplications.
15−6i
The circle graph describes the distribution of preferred music from a sample of 400 randomly selected middle school students.
a circle graph titled preferred music, with five sections labeled rock 13 percent, hip hop 25 percent, pop 35 percent, classical 13 percent, and jazz 14 percent
Which of the following conclusions can we draw from the circle graph?
Pop is the preferred music for 35 students.
Jazz is the preferred music for 56 students.
Together, Hip Hop, Rock, and Jazz are the preferred music for less than half the students.
Together, Hip Hop and Pop are the preferred music for 260 students.
Answers
The conclusion we can draw from the circle graph is (2) Jazz is the preferred music for 56 students.
Which of the conclusions can we draw from the circle graph?From the circle graph, we can draw the following conclusions:
Pop is the preferred music for 35% of the sample, which is equivalent to 0.35 x 400 = 140 students.
Therefore, conclusion (1) is incorrect.
Jazz is the preferred music for 14% of the sample, which is equivalent to 0.14 x 400 = 56 students.
Therefore, conclusion (2) is correct.
The combined percentage of Hip Hop, Rock, and Jazz is 13% + 25% + 14% = 52%, which is more than half of the sample.
Therefore, conclusion (3) is incorrect.
Hip Hop and Pop are the preferred music for 25% + 35% = 60% of the sample, which is equivalent to 0.6 x 400 = 240 students.
Therefore, conclusion (4) is incorrect.
Therefore, the only correct conclusion that can be drawn from the circle graph is that Jazz is the preferred music for 56 students.
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Help solve I don’t understand it!
Answers
Answer:
your answer is 80 degree .
because of angle sum propert
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follow me guys
Answer:
Angle ACE=80º
Step-by-step explanation:
Since the angles ACD and ACE are supplementary (meaning they form a straight line or 180º when added up) we know that the sum of those angles is 180º.
If ACD + ACE = 180 and ACD =100
then, 100 + ACE =180 and by subtracting we find that ∠ACE=80º.
suppose that the relation T is defined as follows.
T= {(-9,0),(-4,8),(-8,-8),(3,-9)
give the domain and range of T.
domain -
range -
Answers
R:0,8,-8,-9
You can infer causality from a correlational result, but only when the r value is greater than ?A. 0B. 5C. 1
Answers
You can infer causality from a correlational result, but only when the r value is greater than:
C. 1
Causality refers to a situation in which one event causes another. When there is a correlation between two variables, it means that they tend to move in the same direction.
However, this does not necessarily mean that one event causes the other. In order for a correlation to indicate causality, the correlation coefficient (r) must be greater than 1. If the correlation coefficient is below 1, then there is not enough evidence to suggest that one event causes the other.
In addition, there are other factors that need to be considered when assessing causality from a correlational result.
For example, the strength of the relationship between the variables, the direction of the relationship, and the consistency of the results over time. It is also important to consider the context in which the research was conducted, as this may have an effect on the results.
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A 9-kilogram bag of rice costs $12.96. What is the unit price?
Answers
Answer:
$1.44
Step-by-step explanation:
9kg costs $12.96
1kg costs ($12.96*1kg)÷9kg
=$1.44
need help on this thank you
Answers
Answer:
A. n = 1/63
B. k = 13/3
C. g = 5
D. w = 21/17
Step-by-step explanation:
A. 9n = 15/7 - 2
9n = 15-14/7
9n = 1/7
n = 1/7 ÷ 9
= 1/7 × 1/9
n = 1/63
B. 1/3 = k - 4
1/3 + 4 = k
1+12/3 = k
13 /3 = k
k = 13/3
C. g - 2/5g = 3
5g-2g/5 = 3
3/5g = 3
g = 3 ÷ 3/5
= 3 × 5/3
= 15/3
g = 5
D. 3/7w + 2w = 3
3w+14w/7 = 3
17/7w = 3
w = 3 ÷ 17/7
= 3 × 7/17
= 21/17
w = 21/17
PLEASEE help lol!!!!!!!
Answers
The equation that models the total number of flowers used is d + t = 16
The equation that models the costs of the bouquet is $1.75d + 0.85t= 16.30
What are the equations?The equations that are required would be linear equations. A linear equation is an equation that has a single variable raised to the power of 1.
An example of a linear equation is x + 2. The variable x is raised to the power of 1. 2 is the constant terms
The form of the equation that represents the total number of flowers used is:
Total number of flowers = number of daisies + number of tulips
16 = d + t
The form of the equation that represents the total cost of the bouquet is:
(cost of one daisy x number of daises) + (cost of one tulip x number of tulips) = total cost
$1.75d + 0.85t= 16.30
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Why is (4x-2)(3x+5) not an intelligent
guess for factoring this trinomial even though
4.3=12 and -2.5=-10?
Answers
Trinomials are expressions with three terms
The factor is not an intelligent guess, because the expression can be further simplified
Why the factor is not intelligent?
The factor is given as:
(4x - 2)(3x + 5)
The above factor can further be factorized.
This is shown below
(4x - 2)(3x + 5) = 2(2x - 1)(3x + 5)
Hence, the factor is not an intelligent guess, because the factor can still be further simplified
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Does 2, 15, 17 form a right triangle
Answers
Answer:
no
Step-by-step explanation:
2 + 15 needs to be greater than 17 but it is equal. therefore it is not a triangle
A grocery store chain introduces a new brand of cereal in several of its stores. The function B(w)=120w150+w2 for w≥0 models the number of boxes, B, in thousands, of the cereal sold after w weeks. The graph of this function is shown below.
Select the THREE true statements regarding the graph of B(w).
A
Based on the zeros of the function, the number of boxes of cereal sold is 0 after 0 weeks.
B
Based on the zeros of the function, the number of boxes of cereal sold is 0 after 1,250 weeks.
C
Based on the end behavior of the function, the number of boxes of cereal sold will keep falling after reaching the maximum.
D
Based on the asymptote of the function, the number of boxes of cereal sold will never fall below 800 after reaching the maximum.
E
Based on the asymptote of the function, the number of boxes of cereal sold will never reach 0 after the cereal is introduced in the store.
Answers
The THREE true statements regarding the graph of B(w) are;
A) Based on the zeros of the function, the number of boxes of cereal sold is 0 after 0 weeks.
C) Based on the end behavior of the function, the number of boxes of cereal sold will keep falling after reaching the maximum.
E) Based on the asymptote of the function, the number of boxes of cereal sold will never reach 0 after the cereal is introduced in the store.
How to Interpret Quadratic Graph?
We are given the graph represented by the quadratic function;
B(w) = 120w/(150 + w²) for w ≥ 0 that models;
the number of boxes, B, in thousands, of the cereal sold after w weeks
From the graph, we can see that at the origin which is the coordinate (0, 0) that it remains so and as such the number of boxes of cereal sold is 0 after 0 weeks. Thus, option A is correct
Secondly, from the given graph, we see that the graph starts rising from zero to a maximum after which it keeps falling. Thus, we can say that option C is correct
Lastly, we see that the graph asymptote approaches 500 thousand boxes but never gets to zero and as such we can say that option E is correct.
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A student is trying to construct triangles using four different sets of angles. Th angles in each set are given below. Which set will allow the student to construct a triangle
Answers
Well I can't be for sure but I know for a fact its not set IV it's not possible to make a triangle out of all right angles. Set II, well, that isn't right either. You can't make a triangle out of all obtuse angles. Like the right angle one, its not possible you can only use one obtuse or right angle in a triangle other wise it's not going to be a triangle. I'd say go try Set III since that would most likely make an equilateral triangle.
Page 1:
a. If two points on a line are A(-5, 7) and B(-2, 1), the rise is
so the slope of the line is
b. If two points on a line are A(10, -3) and B(12, 9), the rise is
run is
the run is
so the slope of the line is
c. If two points on a line are A(4, 6) and B(8,-8), the rise is
run is
Page 2:
so the slope of the line is
a. In the point-slope form of a line.
mix
the clon
and the
, and
and the
Answers
a) If two points on a line are A(-5,7) and B(-2,1), the rise -6, the run is of 3, and then the slope is of -2.
b) If two points on a line are A(10,-3) and B(12,9), the rise 12, the run is of 2, and then the slope is of 6.
c) If two points on a line are A(4,6) and B(8,-8), the rise -14, the run is of 4, and then the slope is of -3.5.
How to calculate the slope a linear function?The slope-intercept definition of a linear function is given as follows:
y = mx + b.
For which the parameters are given as follows:
m is the slope, representing the rate of change.b is the intercept, representing the value of y when x = 0.As the slope represents the rate of change of the output relative to the input, it is calculated as the change in the output y divided by the change in the input x, that is, the rise divided by the run.
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deduce that no matter how the two dice are biased, the numbers 2, 7, and 12 cannot be equally likely values for the slim. in particular, the sum cannot be uniformly distributed on the numbers from 2 to 12. g
Answers
We know that no matter how the two dice are biased, the numbers 2, 7, and 12 cannot be equally likely values for the sum. In particular, the sum cannot be uniformly distributed on the numbers from 2 to 12.
Explanation:
When we roll a fair die (i.e. an unbiased die), the probabilities of getting any one of the six possible numbers {1, 2, 3, 4, 5, 6} are equal to 1/6 each. But, when we use a biased die, the probabilities of getting any of the six possible numbers will no longer be equal. Some numbers will be more likely to occur, while others will be less likely to occur
For example:
if one of the dice has a weight in such a way that it always rolls a 6, then the probability of getting a sum of 2 will be zero, the probability of getting a sum of 7 will be 1/6, and the probability of getting a sum of 12 will be zero.However, if the dice are biased in some other way, we can still get non-zero probabilities for the sums of 2, 7, and 12. But, the probability of getting those three sums will not be the same. For instance, if one die is biased to always roll a 1, and the other die is biased to always roll a 6, then the probabilities of getting each of the sums 2, 7, and 12 are as follows:
P(2) = P(1, 1) = (1/6)² = 1/36
P(7) = P(1, 6) + P(6, 1) + P(2, 5) + P(5, 2) + P(3, 4) + P(4, 3) = 6(1/6)(1/6) = 1/6P(1
2) = P(6, 6) = (1/6)² = 1/36
So, the probability of getting a sum of 7 is six times as likely as getting a sum of 2 or 12. Therefore, the sum cannot be uniformly distributed on the numbers from 2 to 12.
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Help me shoe work on this question please
Answers
The line /TV/ that we have been asked to find from the information is the question is obtained as 7.
What is the sine rule?The sine rule, also known as the law of sines, is a trigonometric formula used to find an unknown side or angle in a triangle. It states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is equal for all three sides of the triangle.
We know that the missing angle U is obtained from;
180 - (58.3 + 80)
= 41.7°
Then;
8.9/Sin 58.3 = /TV//Sin 41.7
/TV/ = 8.9 Sin 41.7/Sin 58.3
/TV/ = 5.9/0.85
= 7
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4.09x9.1 what is the answer to this.
Answers
Answer:
37.219
Step-by-step explanation:
line up the decimals and do it that way
______ analysis is the statistical process of estimating the relationship between dependent and ______ variables. Multiple Choice Time series, outcome Regression, outcome Time series, latent Regression, independent
Answers
The statistical method of determining the link between dependent and outcome variables is called regression analysis. Here option B is the correct answer.
Regression analysis is a statistical method used to estimate the relationship between a dependent variable and one or more independent variables. The dependent variable is the outcome variable of interest, while the independent variable is the variable used to explain the variation in the dependent variable. Regression analysis is widely used in many fields such as economics, finance, psychology, engineering, and social sciences.
In a typical regression analysis, the relationship between the dependent variable and the independent variable(s) is estimated using a regression equation. The regression equation provides a mathematical formula to predict the value of the dependent variable based on the values of the independent variable(s). The regression equation can be used to identify the strength and direction of the relationship between the dependent and independent variable(s).
Regression analysis is useful for many purposes, such as understanding the factors that influence an outcome variable, predicting the value of the outcome variable based on the values of the independent variable(s), and evaluating the effectiveness of an intervention or treatment.
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Complete question:
______ analysis is the statistical process of estimating the relationship between dependent and ______ variables.
a) Time series, outcome
b) Regression, outcome
c) Time series, latent
d) Regression, independent
a medium-sized jet has a 3.8-m -diameter fuselage and a loaded mass of 85,000 kg . the drag on an airplane is primarily due to the cylindrical fuselage, and aerodynamic shaping gives it a drag coefficient of 0.37.
Answers
Based on the given information, we know that the medium-sized jet has a fuselage diameter of 3.8 meters and a loaded mass of 85,000 kilograms. The drag on the airplane is primarily due to the cylindrical shape of the fuselage, and its aerodynamic shaping gives it a drag coefficient of 0.37.
To calculate the drag force on the airplane, we can use the formula:
Drag Force = 1/2 x Density x Velocity^2 x Surface Area x Drag Coefficient
The surface area of a cylinder is given by:
Surface Area = 2 x π x (diameter/2) x length
Assuming a length of 30 meters for the fuselage, we can calculate the surface area as:
Surface Area = 2 x π x (3.8/2) x 30 = 426.43 square meters
Using the given drag coefficient of 0.37 and assuming a cruising speed of 800 km/h (or 222.22 m/s), we can calculate the drag force as:
Drag Force = 1/2 x 1.225 kg/m^3 x (222.22 m/s)^2 x 426.43 m^2 x 0.37
Drag Force = 5,641,613 Newtons
Therefore, the drag force on the medium-sized jet is approximately 5.64 million Newtons. This drag force must be overcome by the jet's engines to maintain its cruising speed.
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A company manufactures a special type of sensor, and packs them in boxes of 4 for shipment. Then a new design increases the weight of each sensor by 9 grams. The new package of 4 sensors weighs 76 grams. How much did each sensor weigh originally?
Answers
As the firm develops a specific sort of sensor and ships them in boxes of four, each sensor weighed 10 grams at first.
What is equation?In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. A mathematical phrase with two equal sides separated by an equal sign is called an equation. An example of an equation is 4 + 6 = 10.
Here,
Let's call the original weight of each sensor "w". The total weight of 4 sensors would be 4w.
With the new design, each sensor weighs 9 grams more, so each sensor weighs w + 9 grams. The total weight of 4 sensors is 76 grams, so we can write an equation:
4(w + 9) = 76
Expanding the left-hand side and solving for w, we have:
4w + 36 = 76
4w = 40
w = 10
So each sensor originally weighed 10 grams as company manufactures a special type of sensor, and packs them in boxes of 4 for shipment.
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En un almacén hay tres cajas de productos. La primera contiene 20 productos, de los cuales 3 son defectuosos, en la segunda hay 16 productos, con 2 defectuosos, y en la tercera caja hay 10 productos, sin productos defectuosos ¿Cuál es la probabilidad de sacar un producto defectuoso al azar?
Answers
La probabilidad de sacar un producto defectuoso al azar de las tres cajas es aproximadamente 0.0917, o un 9.17%.
La probabilidad de sacar un producto defectuoso al azar de las tres cajas se puede calcular utilizando la fórmula de la probabilidad.
Primero, calculemos la probabilidad de sacar un producto defectuoso de cada caja:
1. En la primera caja, hay 3 productos defectuosos entre 20 productos en total. La probabilidad es 3/20.
2. En la segunda caja, hay 2 productos defectuosos entre 16 productos en total. La probabilidad es 2/16.
3. En la tercera caja, no hay productos defectuosos entre 10 productos en total. La probabilidad es 0/10.
Para encontrar la probabilidad total, sumamos las probabilidades de cada caja y luego dividimos por el número total de cajas:
(3/20 + 2/16 + 0/10) / 3 ≈ (0.15 + 0.125 + 0) / 3 ≈ 0.0917
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what is the equation for this situation
Answers
Graph the function f(x) = -3 log₂ (-x-4) - 8 on the
axes below. You must plot the asymptote and any two points
with integer coordinates.
Answers
The graph of the function is attached below:
The asymptote of the function is:
(-3 log(-x-4)/log2)-8 →∞ as x→ -4
What is meant by a function?Exactly one element of Y is assigned to each element of X in a mathematical function from a set X to a set Y. The sets X and Y are referred to together as the function's codomain and domain, respectively.
Al-Biruni and Sharaf al-Din al-Tusi were two Persian mathematicians who are credited with developing the earliest known approach to the concept of function. The basic conception of functions was the relationship between fluctuating quantities and other variables. An illustration of this is how time affects a planet's position. The idea was developed historically with the infinitesimal calculus towards the end of the 17th century, and until the 19th century, the functions that were taken into consideration were differentiable.
Given function is,
f(x)= -3 log₂ (-x-4) - 8
The graph of the function is attached below:
The asymptote of the function is:
(-3 log(-x-4)/log2)-8 →∞ as x→ -4
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Consider a continuous random variable x, which is uniformly distributed between 65 and 85. The probability of x taking on a value between 75 to 90 is ________. 0.50 0.075 0.75 1.00
Answers
The probability of x taking on a value between 75 to 90 is 0.25.
Given that x is a continuous random variable uniformly distributed between 65 and 85.To find the probability that x lies between 75 and 90, we need to find the area under the curve between the values 75 and 85, and add to that the area under the curve between 85 and 90.
The curve represents a rectangular shape, the height of which is the maximum probability. So, the height is given by the formula height of the curve = 1/ (b-a) = 1/ (85-65) = 1/20.Area under the curve between 75 and 85 is = (85-75) * (1/20) = (10/20) = 0.5Area under the curve between 85 and 90 is = (90-85) * (1/20) = (5/20) = 0.25.
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after fitting a linear regression model to a dataset, the model's slope and intercept are -3 and 0 respectively. now, if we change our independent variable by adding 4.5 units to x, what is the absolute value of the change in the predicted value of dependent variable y?
Answers
The absolute value of change in the predicted value of dependent variable Y is 18.
Any variable whose value is influenced by an independent variable is said to be dependent. The thing that is measured or assessed in an experiment or mathematical equation is the dependent variable. The phrase "the outcome variable" is another name for the dependent variable.
Slope = b = -4
Intercept = a = -2.8
So, the equation of the regression line is
y = a + bx
y = -2.8 - 4x ...Equation 1
Now suppose the value of x is changed by adding 4.5
i.e. put x = x + 4.5
So,
y = -2.8 - 4(x + 4.5)
y = -2.8 -4x - 18 ...Equation 2
Comparing 1 and 2 ,
We get the predicted value of dependent variable Y as 18
Therefore The absolute value of change in the predicted value of dependent variable Y is 18
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100 points
Given log34≈1.262 and log37≈1.771, what is the value of log3(7 / 16)?
Use three decimal places
log3(7 / 16) =
Answers
Answer:
-0.753Step-by-step explanation:
Given
log₃4 ≈ 1.262 and log₃7 ≈ 1.771To find
log₃(7/16)Solution
log₃(7/16) = log₃7 - log₃16 = log₃7 - 2log₃4 =1.771 - 2*1.262 = -0.753So
log_3(7/16)log_3(7)-log_3(16)log_3(7)-log_3(4²)log_3(7)-2log_3(4)1.771-2(1.262)-0.753Which of the following transformations would map CD on C'D'
Answers
hello, first we need to know what color represents each line segment.
Look at the figure: CD is represented in green, and C'D is represented in blue.
Now, let's look at the points of each one:
CD: (2,1) and (3(-4)
C'D': (-1,2) and (4,3)
To solve this question, we need to rotate the green line segment to the same position as the blue line segment.
So, if we rotate 90 degrees in the clockwise, we will have:
(-2, 1) and (-3, -4)
If we rotate 90 degrees in the counterclockwise, we will have:
(-1,2) and (4,3). This are the same points of the line segment C'D'