Answer:
b-2x=n
b-2x+2x=n+2x
b=n+2x
Step-by-step explanation:
add 2x to both sides of the equation and simplify
Thompson down the street from his home to Cameror's house. Along the way, he stopped at a bakery to pick up cupcakes. If he began at (10, -9). ended at (12, -7) and stopped at the bakery at (11, -8). what are the possible ratios to represent his trip? Select all that apply.
Start ( 10, -9)
Bakery ( 11, -8)
End (12 , -7)
Distance = [(x2 - x1)^2 + (y2 - y1)^2] ^1/2
Distance from S to B
[(11-10)^2 + (-8- (-9))^2]^1/2
[ 1 + 1 ] ^ 1/2
2 ^ 1/2
Distance from B to E
[(12-11)^2 + (-7-(-8))^2]^1/2
[ 1 + 1] ^1/2
2^1/2
Distance from S to E
[(12-10)^2 + (-7 - (-9))^2]^1/2
[4 + 4]^1/2
8^1/2
ratio
2^1/2 / 8^1/2
= 1/2
the ratio could also be the reverse
8 ^1/2 / 2^ 1/2
= 2
Answer:
1/2 and 2
which one don't belong and why.?
The set 3 = y + 1 and x = -6 does not belong to the four sets of equations because it a linear equation with one variable.
Difference between linear equation and simultaneous equations?Linear equation has only one variable. The linear equations in one variable is an equation which is expressed in the form of ax + b = 0, where a and b are two integers, and x is a variable and has only one solution
While simultaneous equations are two or more equations that are satisfied by the same set of values for the variables.
we can observe that the pairs;
y = 3x + 1
y = 3x - 1,
-2x + y = 2
-4x + 2y = 4 and,
y - 1 = 2(x + 4)
y + 3 = -5(x + 1)
all have more than one variable and can give the same set of values to satisfy for each pair.
But the set;
3 = y + 1 and x = -6 only have one variable each and will have only on solution.
In conclusion, only the set of equations 3 = y + 1 and x = -6 with one variable does not belong.
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Thomas buys tickets for his family to see a movie.
He pays $37.50 for 2 adult tickets and 1 student ticket.
The next week he goes back with his friends and pays $35.25 for 1 adult ticket and 3 student tickets.
What system of equations can be used to find the price of an adult ticket, a, and the price of a student ticket, s ?
Answer:
37.5=2A+S, 35.25=1A+3S (You may have to rearrange it depending on directions)
Step-by-step explanation:
Okay, so we lets write that
Adult=A
Student=S
37.5=2A+S
35.25=1A+3S
This is as far as my brain power goes, so hopefully it helps you!
Heart it if I was good!
Please help! Im givin 20 points! Please!
The y-coordinate for the solution to the system of equations is 6.
What is equation?Equation is a physical and mathematical statement the describing physical phenomenon the relationship between different physical quantity typically consist of variable simple presenting physical quantity and then it personal variable maybe pointed search is the energy.
The y-coordinate for the solution to the system of equations is 6. This is calculated by substituting the given y-value (2/3) into the equation -x+3y=9 and solving for x. Specifically, -x+3(2/3) = 9, which reduces to -x = 3. Therefore, x = -3 and substituting this value into the first equation yields 3y = 9, which simplifies to y = 3. Therefore, the y-coordinate for the solution to the system of equations is 6.
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Please help me with this homework
Answer:
7. A=48
8.B=30
9. C=188
10. D=18
11. X=32
12.Y=40
Step-by-step explanation:
Answer:
7. \(a=48\)
8. \(b=30\)
9. \(c = 188\)
10. \(d = 18\)
11. \(x = 32\)
12. \(y = 40\)
Step-by-step explanation:
Let's do something called cross-multiplication. It's exactly what it sounds like, we multiply the top number with the denominator across the multiplication.
\(\frac{33}{a} = \frac{11}{16}\)
\(11 a = 33(16)\)
\(11a = 528\)
Now we can simplify.
\(a=48\)
So we got the answer for the first one. We can keep doing the same thing for the others.
can you help me with this
Answer:
C.
Step-by-step explanation:
The area of a quarter circle is 38.465 square
inches. What is the quarter circle's radius?
The formula for a circle's area is \(A=\pi r^2\). We are given an area of 38.465 square inches for a quarter of it.
Multiply this value by 4 to compensate for the quarter circle.
\(4 \times 38.465=\pi r^2\)
\(153.86=\pi r^2\)
Divide both sides by pi (Note: I'm using the conventional value of 3.14)
\(49=r^2\)
Take the positive square root of both sides
\(7=r\)
The radius is 7 inches. Let me know if you have any questions, thanks!
name the sampling method used in this data collection. a polling company wanted to study about hr personnel in tech companies. the pollster selects five tech companies and interviews all hr personnel in each of the 5 companies.
Cluster Sample is the sampling method used in this type of data collection.
Cluster sampling is a sampling technique used in statistics that divides the total population under consideration into externally homogeneous but internally heterogeneous groupings known as clusters. Each cluster essentially serves as a miniature representation of the overall population.
Using simple random sampling, some clusters are picked after the clusters have been identified, while the remaining clusters are left out of the study. A researcher must determine the right sampling strategy for each cluster after identifying the clusters.
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we are told that 8% of college graduates, under the age of 25 are unemployed. what is the probability that at least 200 out of 215 college graduates under age 25 are employed?
The probability that at least 200 out of 215 college graduates under age 25 are employed is 0.29
In this question we have been given 8% of college graduates, under the age of 25 are unemployed.
We need to find the probability that at least 200 out of 215 college graduates under age 25 are employed.
Here, n = 215
8% of college graduates, under the age of 25 are unemployed.
So, p = 0.08
For graduates under age 25 are employed,
Pr = 1 - 0.08
Pr = 0.92
We use Normal probability distribution
The expected value of the binomial distribution is:
E(x) = n * Pr
E(x) = 215 * 0.92
E(x) = 197.8
So, μ = E(x)
= 197.8
An the standard deviation would be,
σ = √n * Pr * (1 - Pr)
σ = √(215 * 0.92 * 0.08)
σ = 3.98
An expression for the exact probability that at least 200 out of 215 college graduates under age 25 are employed.
P(x ≥ 200)
which is nothing but the pvalue of Z when x = 200
z = x - μ/σ
z = (200 - 197.8)/3.98
z = 0.55 has p value 0.29
Therefore, the required probability is 0.29
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There are 66 markers
in the box. 20 markers
don't have tops. How
many more markers
don't have tops?
marketing
There are 20 markers with no tops and 46 markers with tops in the box.
What precisely are mathematical operations?A function in mathematics that converts zero or more input values (also known as "operands" or "arguments") to a well-defined output value is known as an operation.The complexity of the operation is determined by the number of operands.Binary operations (i.e., operations of arity 2), such as addition and multiplication, and unary operations (i.e., operations of arity 1), such as additive inverse and multiplicative inverse, are the most commonly studied operations.A constant is an operation with arity zero, also known as a nullary operation.An arity 3 operation, also known as a ternary operation, is the mixed product.So, there are 66 markers in the box.
20 markers don't have tops.Markers with tops:
66 - 20 = 46Therefore, there are 20 markers with no tops and 46 markers with tops in the box.
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The correct question is given below;
There are 66 markers in the box. 20 markersdon't have tops. How many more markers have tops?
Express the relation below as a set of ordered pairs.
x y
15
9
12
16
12
13
Fill in all the blanks.
(12,)
(15, 16)
(9,
Answer:
12,13
9,12
Step-by-step explanation:
really really easy in an order pair
this is how you would do it
x. y
12,13
the first number is X on your graph or chart and the second one is Y
6j–11j–11j+19=-13 plz help me
Answer:
j = 2
Step-by-step explanation:
Combine like terms
6j-11j-11j+10=-13
-16j+19=-13
Subtract 19 from both sides of the equation
-16j+19=-13
-16+19-19=-13-19
Simplify
-16j=-32
Divide both sides of the equation by the same term
Simplify again
Which gives you j=2
To play indoor soccer at the Sun Oaks Club, you must pay a $100 membership
fee, plus $10 for each hour you use the facilities. a) The function f represents the
cost of playing soccer at Sun Oaks depending on how many hours you play. The
function g represents the cost if the hourly rate were halved. Write each
function. *
Given that:
Membership feet to play indoor soccer at the Sun Oaks Club = $100
Hourly rate = $10
To find:
The function f represents the cost of playing soccer at Sun Oaks.
Here, fixed cost is $100.
Let the number of hours of playing be t. So, total variable cost is $10t.
Total cost = Fixed cost + Variable cost
\(f(t)=100+10t\)
So, the required function is \(f(t)=100+10t\).
Now, if the hourly rate were halved. Then,
Hourly rate \(= \$ \dfrac{10}{2} = \$ 5 \)
So, total variable cost is $5t and total cost function is
\(g(t)=100+5t\)
So, the required function is \(g(t)=100+5t\).
Indentify each example as a population or a sample:
a. a coffee shop chain was interested
in the coffee consumption of people
between the ages of 21 and 30. in a
survey of 372 young people, 64% said
they usually drink coffee in the
morning.
"all people between the ages of 21
and 30" is an example of a:
In this scenario, "all people between the ages of 21 and 30" is an example of a population. The population refers to the entire group of individuals that the coffee shop chain is interested in studying, while the survey of 372 young people would be considered a sample taken from that population.
It is important to note that a population can be large or small, depending on the research context. In this example, the population consists of all individuals within the specified age range.
On the other hand, a sample refers to a subset of the population that is selected for data collection and analysis. In the given example, the survey of 372 young people represents a sample of the population. The sample is used to gather information about the larger population and draw conclusions or make inferences based on the sample data.
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On a map, 3 centimeters represents 150 kilometers. If a line between two cities measures 4.5 centimeters, how many kilometers apart are they
Answer: 225km
Step-by-step explanation:
3cm --- 150
1cm ---- 50
Therefore 4.5cm * 50 = 225km
if gas has gone up from 2.18 a gallon to 4.49 a gallon since last year.how much more will you pay to fill your tank with 12.2 gallons?
Answer:
7.71 gallonsStep-by-step explanation:
12.2 - 4.49 = 7.71 gallonsAnswer:
54.778
4.49 x 12.2 = 54.778
_____ Is a function that calls itself. Each time it calls itself, a separate copy is created that has its own values for its parameters and variables. Base cases stop infinite recursion.
Recursion is a function that calls itself and creates separate copies with their own parameters and variables. Base cases are essential to prevent infinite recursion.
The term you are referring to is "recursion". Recursion is a powerful programming technique that involves a function calling itself in order to solve a problem. Each time the function is called, a new copy of the function is created, with its own set of parameters and variables. Recursion can be used to solve a wide range of problems, from simple mathematical calculations to complex algorithms.
One important aspect of recursion is the need for base cases. These are the conditions that stop the recursion from continuing indefinitely.
Without base cases, the function would continue to call itself forever, resulting in an infinite loop. Base cases are usually simple conditions that can be easily checked, such as the value of a variable reaching a certain threshold.
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By definition, when a test or technique measures what it intends to, it is a. valid. b. reliable. c. significant. d. generalizable.
By definition, when a test or technique measures what it intends to, it is valid.
The answer is option A.
The criterion-related validity of a take-a-look is measured by the validity coefficient. Its miles said as a number between zero and 1.00 that indicates the significance of the relationship, "r," among the take a look at and a measure of task overall performance (criterion).
Reliability and validity are both approximately how nicely a technique measures something: Reliability refers to the consistency of a measure (whether or not the consequences can be reproduced below identical situations).
Validity refers back to the accuracy of a measure (whether or not the results really do constitute what they may be speculated to a degree).
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Write the number seven hundred and ninety four in figures
Answer: 56 785 is written as fifty six thousand, seven hundred and eight five. The number 406 090 is written as four hundred and six thousand and ninety. Numbers with seven, eight or nine digits, are millions. 46 758 442 is forty six million, seven hundred and fifty eight thousand, four hundred and forty two.
Step-by-step explanation:
The number would be 794 in figure form which represents seven hundred and ninety-four.
What is the number system?A number system is defined as a way to represent numbers on the number line using a set of symbols and approaches. These symbols, which are known as digits, are numbered 0 through 9. Based on the basic value of its digits, different types of number systems exist.
Calculating the number of quantities for an object or the Number of things left in the container are only two examples of the types of mathematical operations that utilize the Number System.
We have to write the number seven hundred and ninety-four in figures
As per the given statement, the expression would be:
⇒ 700 + 94
⇒ 794
Therefore, the number seven hundred and ninety-four in figure form would be 794.
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Here's a graph of a linear function. Write the
equation that describes that function.
Express it in slope-intercept form.
Answer:
the graph has a positive slope with a y-intercept of 5
y = 1/4x + 5
Step-by-step explanation:
i found the slope by using points (0,5) and (4,6)
slope formula says to subtract the y-values and divide by difference of x-values:
(6-5) / (4-0) = 1/4
I need someone to check my answer for this graph
(I chose negative )
Answer:
The answer is D) Undefined because the equation is x=-11.
Two students have devised a dice game named “Sums” for their statistics class. The game consists of choosing to play odds or evens. Roll 2 3 4 5 6 7 8 9 10 11 12 P(roll) StartFraction 1 Over 36 EndFraction StartFraction 2 Over 36 EndFraction StartFraction 3 Over 36 EndFraction StartFraction 4 Over 36 EndFraction StartFraction 5 Over 36 EndFraction StartFraction 6 Over 36 EndFraction StartFraction 5 Over 36 EndFraction StartFraction 4 Over 36 EndFraction StartFraction 3 Over 36 EndFraction StartFraction 2 Over 36 EndFraction StartFraction 1 Over 36 EndFraction Each person takes turns rolling two dice. If the sum is odd, the person playing odds gets points equal to the sum of the roll. If the sum is even, the person playing evens gets points equal to the sum of the roll. Note that the points earned is independent of who is rolling the dice. If Jessica is challenged to a game of Sums, which statement below is accurate in every aspect in guiding her to the correct choice of choosing to play odds or evens? E(evens) will be more because there are more even numbers that result from rolling two dice. Therefore, Jessica should play evens. E(odds) will be more because the probability for each odd number being rolled is greater. Therefore, Jessica should play odds. E(evens) will be more because the value of the even numbers on the dice are more. Therefore, Jessica should play evens. E(evens) = E(odds) because the different probabilities and values end up balancing out, creating a fair game. Therefore, Jessica may choose whichever she likes.
Answer:
(D)E(evens) = E(odds) because the different probabilities and values end up balancing out, creating a fair game. Therefore, Jessica may choose whichever she likes.
Step-by-step explanation:
The table of the probability of rolling the sums is presented below.
\(\left\begin{array}{ccccccccccccc}$Roll&2&3&4&5&6&7&8&9&10&11&12\\\\$Prob&\frac{1}{36}&\frac{2}{36}&\frac{3}{36}&\frac{4}{36}&\frac{5}{36}&\frac{6}{36}&\frac{5}{36}&\frac{4}{36}&\frac{3}{36}&\frac{2}{36}&\frac{1}{36} \end{array}\right\)
P(an even sum)
\(=\frac{1}{36}+\frac{3}{36}+\frac{5}{36}+\frac{5}{36}+\frac{3}{36}+\frac{1}{36} \\\\=\frac{18}{36}\)
Therefore, P(an odd sum) \(=\frac{18}{36}\)
Therefore, E(evens) = E(odds) because the different probabilities and values end up balancing out, creating a fair game. Therefore, Jessica may choose whichever she likes.
Answer:
D /Even-odds
Step-by-step explanation:
just took test on edge 2020
Evaluate -8 - 21.
-10
-16
16
10
Answer:
Evaluate -8 - 21.
-10
-16
16
10
Simplify. (w15th power/ w5th power) 4
Answer:
the answer is to the question is 12
Explain the parts of this imaginary number. −7+4i
Step-by-step explanation:
Every imaginary number contains two part. which is recalled as:
\(a + bi\)
in which a is a real number and b is known as the imaginary number.
so –7===> Real number
4===> imaginary part
solve for x : 2x² - 7x = 0
\(2x^2-7x=0\\x(2x-7)=0\\x=0 \vee 2x-7=0\\x=0 \vee x=\dfrac{7}{2}\)
Walmart’s stock price started at $70. It went up by $2, then went down $4. What is the final stock price?
Answer:
68
Step-by-step explanation:
Step 1:
( 70 + 2 ) - 4
Step 2:
72 - 4
Answer:
68
Hope This Helps :)
the set of probabilities associated with the values in a random variable’s sample space
Answer:
The set of probabilities associated with the values in a random variable's sample space is called the probability distribution. It provides the probability of each possible outcome or value that the random variable can take.
Step-by-step explanation:
The probability distribution can be represented in various forms, depending on the type of random variable. For discrete random variables, the probability distribution is often presented as a probability mass function (PMF), which assigns a probability to each possible value. For continuous random variables, the probability distribution is typically described by a probability density function (PDF), which specifies the likelihood of the variable falling within a certain range of values.
For example, let's consider a random variable X that represents the outcome of rolling a fair six-sided die. The sample space of X consists of the values {1, 2, 3, 4, 5, 6}. The probability distribution or PMF for X would assign a probability to each of these values.
Assuming the die is fair, each outcome has an equal probability of occurring, so the PMF for X would be:
P(X = 1) = 1/6
P(X = 2) = 1/6
P(X = 3) = 1/6
P(X = 4) = 1/6
P(X = 5) = 1/6
P(X = 6) = 1/6
These probabilities sum up to 1, indicating that the probabilities assigned to all possible values of X cover the entire sample space.
anthony and cleopatra are lying dead on the floor in a villa. nearby on the floor is a broken bowl. there is no mark on either of their bodies and they were no posioned. how did they die
Anthony and Cleopatra were lying dead on the floor in a villa because they were fishes in the water bowl that might have fallen and broke down.
Since, there was a broken bowl nearby the dead bodies,
it seems like Anthony and Cleopatra were fishes who were in the water in the bowl that broke down.
Since the bowl in which the fishes were, broke down, the water of the bowl spilled and the fishes were no more in water due to which they died. This is the because there was no mark on their body and were neither poisoned.
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graph this y = 3x² - 4x - 2?
Answer:
( 2/3 - 10/3)