It will take Lian's dog 12.5 weeks to finish the remaining food
How to determine how many weeks will it take Lian's dog to finish the remaining food?Fractions are numbers written as a quotient, in which a numerator is divided by a denominator
Given that:
Lian's dog eats 1/20 of a bag of dog food each week
Lian currently has of a bag 5/8 remaining
Since Lian's dog eats 1/20 in one week and 5/8 is remaining.
In order to find the number of weeks it will take the dog to finish the remaining food. We can say:
Number of weeks = remaining food / food for one week
Number of weeks = (5/8) / (1/20) = 12.5 weeks
Therefore, it will take Lian's dog 12.5 weeks to finish the remaining food
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Complete Question
Lian's dog eats 1/20 of a bag of dog food each week. Lian currently has 5/8 of a bag remaining.
How many weeks will it take Lian's dog to finish this remaining food?
the state of california has a mean annual rainfall of 22 inches, whereas the state of new york has a mean annual rainfall of 42 inches. assume that the standard deviation for both states is 8 inches. a sample of 30 years of rainfall for california and a sample of 45 years of rainfall for new york has been taken. if required, round your answer to three decimal places. (a) calculate the sampling error of the sample mean annual rainfall for california.
Sample error is ±2.9872 from the sample mean of 22 inch and standard deviation of 8 inch and sample size of 30 inch.
What is sample error?An analyst makes a statistical error known as a sampling error when they choose a sample that does not accurately represent the complete population of data. As a result, the sample's findings do not accurately reflect the findings from the total population.
Here,
mean=22 inch
standard deviation=8 inch
sample size=30 inch
degree of freedom=29 inch
The sampling error is calculated by dividing the standard deviation of the population by the square root of the size of the sample, and then multiplying the resultant with the Z-score value, which is based on the confidence interval.
By using this,
sampling error=±2.9872 inch
With a sample mean of 22 inches, a standard deviation of 8 inches, and a sample size of 30 inches, the sample error is 2.9872 inches.
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calculate the probability that there will be at least four months in which no accidents occur before the fourth month in which at least one accident occurs.
To calculate the probability that there will be at least four accident in no accident occur before the forth month in which at least one accident occurs
If a month with one or more accidents is regarded as success and let the
k = the number of failures before the fourth success, and then k follows a negative binomial distribution and the requested probability is
1. success taken as a month with no accident
2. k = the number of failure before the fourth success
Alternatively the solution is where [tex]Pr[k\leq 3][/tex]
which is derived directly as a negative binomial distribution
Therefore, the probability that there will be at least four months in which no accidents occur before the fourth month in which at least one accident occurs is 0.2898
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A town's population has been growing linearly. In 2003 the population was 22,000. The population has been growing by 1700 people each year. Write an equation for the population, P, x years after 2003. P = Preview Use the formula to find the population in 2009: Preview
The equation is P = 1700x + 22,000 and the population in 2009 is 32,200.
Here we have to find the equation to get to know the population after x years.
Data provided:
Population in 2003 = 22,000
Year = x year
Population increases every year = 1700
Let P be the population after x year.
So the equation is:
P = 1700x + 22,000
Now we have to find the population in 2009.
So 2009 - 2003 = 6
Put x = 6
P = 1700 × 6 + 22,000
= 10200 + 22,000
= 32,200
Therefore the equation is P = 1700x + 22,00 and in 2009 population is 32,200.
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Mr. Etrada' car can travel no more than 510 mile on one full tank of gaoline. After filling up the tank with gaoline, he traveled 194 mile in the car. Write an inequality that repreent the value of m, the number of mile Mr. Etrada can travel in the car with the remaining gaoline in the tank and olve
After covering 194 miles, Mr. Etrada's car can go a maximum of 316 miles with the gas still in the tank and the inequality that represents the given situation is x + m ≤ 510.
What is inequality?In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to one another.
The equation-like form of the formula 5x 4 > 2x + 3 has an arrowhead in place of the equals sign.
It is an illustration of inequity.
This shows that the left half, 5x 4, is bigger than the right part, 2x + 3.
Finding the x numbers for which the inequality holds true is what we are most interested in.
So, the inequality that can represent the given situation is:
x = total distance traveled
m = miles that the gas will allow you to go
The maximum number of miles per full tank is 510.
Then,
x + m ≤ 510
194 + m ≤ 510
m ≤ 510 - 194
m ≤ 316
Therefore, after covering 194 miles, Mr. Etrada's car can go a maximum of 316 miles with the gas still in the tank and the inequality that represents the given situation is x + m ≤ 510.
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The sum of a number and 7 times its reciprocal is 16/3. Find the number
Answer:
7/3 or 3
Step-by-step explanation:
Step by step explanation is shown in the picture attached.
Hope it helps
Which equation is the equation of a line that passes through (-10 3) and is perpendicular to y=5x-7.
Answer:
y=5x+53
Step-by-step explanation:so all i did was go into the demos app and typed in y=5x-7 and then i entered y=5x+30 and i kept going up until i found the right answer
consider n>3 lines in general position in the plane. prove that these lines form at least n - 2 triangles. g
In general, there are n>3 lines in the plane. Show that at least n - 2 triangles are formed by these lines.
Let's consider the following diagram, where each line is labelled with a letter:
A-B-C-D-E
Since each line intersects with at least one other line, there are at least n-2 triangles that can be formed. For example, triangle ABC, triangle ABD, triangle ABE, triangle BCD, triangle BDE, and triangle CDE are all triangles that can be formed from our five lines.
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A high school offers math placement exams for incoming freshmen to place students into the appropriate math class during their freshman year. Three different middle schools were sampled and the following pass/fail results were found. Run a test for independence at the 0.10 level of significance. School A School B School C Pass 42 29 45 Fail 57 35 61 Hypotheses: Pass/fail rates are dependent on/independent of school. Pass/fail rates are independent of/dependent on school. Enter the expected matrix - round to 4 decimal places. School A School B School C Pass Fail After running an independence test, can it be concluded that pass/fail rates are dependent on school? Yes/No
The pass numbers are independent of the school of study.
Given that a high school offers math placement exams for incoming freshmen to place students into the appropriate math class during their freshman year
Set up hypotheses as
H₀ : Pass independent of school
Hₐ : Pass independent on school
Two tailed chi square test for independence)
Contingency table is shows as below
School A B C Total
Pass 42 29 45 116
Expected 38.6667 38.6667 38.6667 116.0000667
Obs-exp)^2/observed 0.2874 2.4167 1.0373 3.74138208
df 2
p value = 0.154
Since p > alpha(0.1) we accept null hypothesis
The pass numbers are independent of the school of study.
Hence we get the required answer.
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consider a family with three children in which both parents are carriers for cystic fibrosis. what is the probability that they will have exactly one affected child?
The probability that they will have exactly one affected child is 9/64.
What is probability?
Simply put, probability measures how probable something is to occur. We can discuss the probabilities of various outcomes, or how likely they are, whenever we are unsure of how an event will turn out. Statistics is the study of events subject to probability.
The likelihood that a population parameter will be less than a given value when the null hypothesis is true is expressed as the p-value, also known as a probability value or a measure of significance, for a particular statistical model.
Probability of affecting for 1 child = 3/4 = q
Probability of not affecting on 1 child =p=1/4
Formula:
P( exactly one affected child )
= [tex]^{3}C_{1}[/tex] * * (1/4)² * (3/4) = 9/64
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find the measure of a negative angle co terminal with 95°
which of the following hypotheses can be tested with the data that was collected? group of answer choices the average number of consumers that prefer catalogs in spanish is large the average number of consumers that prefer catalogs in english is large the percent of hispanics that are likely to buy from an l.l. bean catalog is higher than 30% the percent of hispanics that prefer to read catalogs in spanish is equal or higher than 30%
The percent of Hispanics that prefer to read catalogs in Spanish is equal or higher than 30%
What is percentage ?
A percentage is a figure or ratio stated as a fraction of 100 in mathematics. Although the abbreviations "pct.", "pct.", and occasionally "pc" are also used, the percent symbol, "%," is frequently used to indicate it. A % is a number without dimensions and without a standard measurement.
%, which is a relative figure used to denote hundredths of any quantity. Since one percent (symbolized as 1%) is equal to one hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified.
By dividing the value by the entire value and multiplying the result by 100, one may determine the percentage. The percentage calculation formula is (value/total value)100%.
The percent of Hispanics that prefer to read catalogs in Spanish is equal or higher than 30%
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an instructor flips a coin and divides her class into two groups: those who got heads and those who got tails. by doing this, the instructor has created
Dividing the class by using Coin flip , The instructor has created minimal group
Researchers employ a technique called the minimal group paradigm to instigate new social groups in the lab. The objective is to classify people into groups using minimal, meaningless, or arbitrary criteria.
A minimal group is a a group lacking interdependence, group cohesion, structure, and other characteristics typically found in social groups.
An example is a group of people disembarking from a bus.
According to the question ,
The instructor is dividing the class by means of coin
Here, the flipping of coin is an arbitrary criteria . Also , the group formed will be anonymous
Hence , the formed group will be minimal group
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I WILL OPEN MY ALT AND COMENT AND GIVE YOU A BRINLIST OPEN IF YOU SHOWED YOUR WORK!!! OPEN THE IMAGE
The equation that doesn't belong is (c) 12(p + 8) = 3(20 - 2p)
How to determine the equation that does not belong?From the question, we have the following parameters that can be used in our computation:
Options A to D
Looking through the options, we can see that:
The equations represented in the options are linear equationsSome variables are enclosed in brackets, while some are notHowever, three of the equations have their variables on one side
While the last has its variable on both sides
Hence, the one that does not belong is (c) 12(p + 8) = 3(20 - 2p)
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The value of China’ export of automobile and part i approximately F of X equal 1. 8208 to the E to the 0. 3387. Ak her ak equal zero correpond in 1998 and what year did will the oxford reach 5. 3 billion
In the year 2002 the exports of Chinese's automobile parts will $5.3 billion.
Explain the term exponential function?The formula for an exponential function is f (x) = a^e, where x is a variable and an is a constant that serves as the function's base and must be bigger than 0. The transcendental number e, or roughly 2.71828, is the most often used exponential function basis.The exponential function for the given export of Chinese's automobile parts is-
5.3 = 1.8208 e^0.3387x
5.3/1.8208 = e^0.3387x
Taking ln both sides-
ln(5.3/1.8208) = ln e^0.3387x
ln(5.3/1.8208) = 0.3387x
Further simplifying
x = ln(5.3/1.8208)/0.3387
x = 3.15
x ≈ 3 year ad some months
Add 3 years to 1998 to get the required year.
Year = 1998 + 3
Year = 2001 and months
Year = 2002
Thus, in the year 2002 the exports of Chinese's automobile parts will $5.3 billion.
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The correct question is-
The value of China's exports of automobiles and parts (in billions of dollars) is approximately f(x) = 1.8208e^.3387x, where x = 0 corresponds to 1998.
In what year did/will the exports reach $5.3 billion?
what is the slope of 0
A number t multiplied by negative -4 is at least negative 2/5
Answer:
-4t ≥ -2/5
Step-by-step explanation:
t≥0.1
Three out of 5 students at Maria's school participate in a school club or sport. There are 175 students at the school. How can equivalent fractions be used to find the s, the total number of students participating in a school club or sport?
The total number of students participating in a school club or sport is 105.
How to calculate the number of students?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers. On the other hand, a fraction appears in the numerator or the denominator of a complex fraction.
Given that three out of 5 students at Maria's school participate in a school club or sport and there are 175 students at the school.
In this situation, the number of people that participate will be:
= Fraction utilized × Total number of students
= 3/5 × 175
= 105
The number of people is 105.
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For each of the following ML functions, could the activation record for the function be deallocated as soon as the function returns? Explain why or why not.a) fun f x = x + 1;b) fun f x = fn y => x + y;c) fun f x = fn y => y + 1;d) fun f x = map ~ x;
The explanation for each condition of the question is given below in which the activation record for the function is deallocated for Option (A).
What is an activation record?
Information required for just one execution of a procedure is managed by an activation record. When a procedure is called, an activation record is pushed into the stack, and it is popped when the control is returned to the calling function.
From the question, Languages typically group all activation-specific function validation under the umbrella of an activation record.
Whenever the block is entered, extend the function activation record.
a. fun f x = x + 1;
In this situation, the activation record concludes after the function "f" exits.Extend the function activation record if the block is entered; otherwise, revert.The activation record was terminated after execution at x=x+1. So, we. The activation record has to be reallocated.Because f(x)=x+1.11f is called, the local function is returned. The activation record is therefore deallocated.b. fun f x = y =>x y;
Take fun f
x=fun y
x+y
Here, f(x) and f are two functions (y).The execution of f(x) requires f(y).Therefore, until f(x) and f(y) is performed, the activation record will remain active. When the control returns to the first function, the activation record is exited.Therefore, during the function return, we need to reallocate the activation record.c. fun.f x = fn y => y+ 1;
fun f
x => fn
y => y+1
In this case, the activation record is expanded to include the second function, f(y), whose execution is reliant on f(x).The record will remain active till the execution of the two functions.After the activation record has been allocated, it is reactivated as the method returns.d. fun f x = map ~ x
Here, the map is used to connect the list to the function f(x) and the activation record is for the function f(x). As a result, the activation record is changed independently and then returned.As a result, a new activation record is not necessary.To learn more about an activation record
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Line j has an equation of y= 1 /5 x+7. Perpendicular to line j is line k, which passes through the point (– 1,– 3). What is the equation of line k
Answer:
y = -5x -8
Step-by-step explanation:
The slope must be the negative reciprocal(-5). So we have y = -5x + b, where we need to find b. To do that, we will plug in the known point. This gives us [tex]-3 = -1 * -5 + b[/tex], or[tex]-3 = 5 + b[/tex]. We subtract 5 from both sides to get b = -8.
given that $x$, $\frac{1}{x}$, $y$, $\frac{1}{y}$, $z$ and $\frac{1}{z}$ are all integers, how many distinct values of $x y z$ are possible?
Distinct value of x, y, z are will be 3
Consider the function will be f(x) = x3 - x2 - 2x +2 = ( x - 1 ) (x2 - 2 )
we have three real roots and ,
x + y + z = - 1/ (-1)
= 1 ,
1/x + 1/y + 1/z = -2 /(-2)
= 1
Consider the function
f(x) = x3 - x2 - 40 + 20.
Set the derivation equal 0 we get x = 4 and x = -10/3
are two local extrema. When x= 4 , f(x)<0,when x = -10/3 . f(x) >0 there are three real roots . we have x + y + z = 1 and 1/x + 1/y + 1/z = - (-40)/ 20 = 2
consider the function
f(x) = x3 - x2- 40x + 40/3 .
we still have same local extrema as (2) and we have x= 4 , f(x) < 0 and we
x= -10/3 , f(x) > 0 so there are three real roots. We have x+ y + z = 1 and 1/x + 1/y + 1/z = -(-40)/40/3 = 3
So, there are 3 distinct values
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a national computer retailer believes that the average sales are greater for salespersons with a college degree. a random sample of 14 salespersons with a degree had an average weekly sale of $3542 last year, while 17 salespersons without a college degree averaged $3301 in weekly sales. the standard deviations were $468 and $642 respectively. is there evidence to support the retailer's belief?
There is sufficient data to back up the assertion that salespeople with college degrees generate much higher average sales than salespeople without.
Given,
This is a test of the hypothesis that the means of the two populations differ.
The assertion is that salespeople with college degrees generate much higher average sales than salespeople without.
The alternative and null hypothesis are then:
H₀ ; μ₁ - μ₂ = 0
Hₐ ; μ₁ - μ₂ > 0
The level of significance is 0.05.
The mean and standard deviation for sample 1 (college degree), with n1=14, are 3542 and 468, respectively.
The mean and standard deviation of sample 2 (non-college degree), with n2=17, are 3301 and 642, respectively.
Now,
Md = M₁ - M₂ = 3542 - 3301 = 241
Md=241 is the difference between the sample means.
The following formula is used to calculate the estimated standard error of the difference between means:
S Md = √(σ₁²/n₁ + σ₂²/n₂) = √(468²/14 + 642²/17) = √(15644.6 + 24244.94) = 199.72
Then, we can calculate the t-statistic as:
t = (Md - (μ₁ - μ₂) / S Md = 241 - 0 / 199.72 = 241/199.72 = 1.21
The degrees of freedom for this test are:
Df = n₁ + n₂ - 2 = 14 + 17 - 2 = 29
Right-tailed tests have 29 degrees of freedom and t=1.21, so the following formula is used to determine the P-value for this test:
P Value = P(t > 1.21) = 0.118025
The effect is significant since the P-value (0.118025) is less than the 0.05 standard of significance.
The null hypothesis is rejected.
Therefore,
The idea that salespeople with college degrees generate much higher average sales than those without is supported by sufficient data.
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3x² + 15x-5) •/. (x + 5)
Divide using synthetic division
What is an equation of the line that passes through the point (1,7)(1,7) and is perpendicular to the line x+6y=42x+6y=42?
The equation of the perpendicular line to x + 6y = 42 is: y = 6x + 1.
What are Perpendicular Lines?The lines that are perpendicular to each other will have slope values that have a product of -1, which means one is a negative reciprocal of the other.
Given the equation, x + 6y = 42, it can rewritten in slope-intercept form as shown below:
6y = -x + 42
6y/6 = -x/6 + 42/6
y = -1/6x + 7
The slope of the line is -1/6. The negative reciprocal of -1/6 is 6. Therefore, the slope of the line that is perpendicular to x + 6y = 42 is 6.
Substitute m = 6 and (x, y) = (1, 7) into y = mx + b to find the y-intercept (b):
7 = 6(1) + b
7 = 6 + b
7 - 6 = b
b = 1
Tp write the equation of the perpendicular line, substitute m = 6 and b = 1 into y = mx + b:
y = 6x + 1
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Let c be the curve of intersection of the parabolic cylinder x2 = 2y, and the surface 3z = xy. Find the exact length of c from the origin to the point 5, 25 2 , 125 6.
From the origin (6,18,36) to the tip, the exact length of the curve is 42.
What are Equations?A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation. as in 3x + 5 Equals 15, for instance.
Equations come in a variety of forms, including linear, quadratic, cubic, and others.
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
We have LHS = RHS (left hand side = right hand side) in every mathematical equation. To determine the value of an unknown variable that represents an unknown quantity, equations can be solved. The statement is not an equation if there is no "equal to" sign in it.
According to our question-
let x = t
x^2= 2y
y = t^2
44/3
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Diandre completed 15 drills in 2 hours.
The rate is 15/2
What is the Unit Rate of 15/2?
If Diandre completed 15 drills in 2 hours, the unit rate will be 7.5 drills per hour.
What is the rate of change?It is defined as the change in values of a dependent variable with respect to the independent variables.
It is given that, Diandre completed 15 drills in 2 hours. The rate is 15/2
A unit rate is a cost for just one of something. This is expressed as a ratio with a denominator of 1. For instance, it is useful in large applications like finding the average speed.
Thus, if Diandre completed 15 drills in 2 hours, the unit rate will be 7.5 drills per hour.
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test worth 50 points; test score of 40%
Answer:
20/50
Step-by-step explanation:
40% is equal to 40/100
40/100 is equal to 20/50
PLEASE HURRY! WILL GIVE AHYTHING!!
Spin a spinner with three equal sections colored red, white, and blue. What is P(yellow)?
33%
0%
100%
66%
Answer:33%
Step-by-step explanation: take 1 divided by 3 which equals 0.33 multiply that by 100 to get a percentage of 33 percent
you don't need to give me anything
Answer:
33%
Step-by-step explanation:
I want your chocolate.
Mary Beth Marrs, the manager of an apartment complex, feels overwhelmed by the number of complaints she is receiving. Below is the check sheet she has kept for the past 12 weeks. Develop a Pareto chart using this information. What recommendations would you make?WEEK GROUNDSPARKING/DRIVES POOLTENANTISSUESELECTRICAL1333 33 3 33323 333 33 33 33333 333 33 343 3333 3 3 33533 333 3333 3363 3333 337333 33 3383 3333 33 333 393 33 3103 3333 33 3311333 33 312 33 333 333 3Problem S6.11
Mary Beth Mars, develops a Pareto chart using the information. The recommendations that you would make is as follows:
A graph containing both bars and a line, the bars representing individual values in descending order and the line representing the cumulative total, is known as a Pareto chart. The Pareto chart allows us to concentrate on it when we need to. The Pareto chart is built upon the 80%-20% run of the show. The Pareto chart states that 20% of arrangements assist in resolving 80% of issues. The complex manager, Mary Beth Marrs, must concentrate on issues with the pool, the ground, and the stopping part in order to satisfy the majority of residents and reduce complaints.
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the coefficient of determination is the proportion of variability of the dependent variable (y) accounted for or explained by the independent variable (x). true false
The Coefficient of determination is the proportion of variability of the dependent and independent variable this statement is true.
The primary result of the regression analysis is the coefficient of determination because it indicates the percentage of variations in the dependent variable that can be accounted for by the independent variable.
The effectiveness of a statistical model in forecasting a result is indicated by the coefficient of determination [tex]R^2[/tex]. The dependent variable in the model is a representation of the result. [tex]R^2[/tex] can have a minimum value of 0 and a maximum value of 1.
Researchers frequently rely on coefficient, also referred to as R-squared (or [tex]R^2[/tex]), when performing trend analysis to determine how strong the linear relationship is between two variables.
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Solve 6-5x/10 2x+1/5 +x/3=2x/15