From the data that teacher described, the following information could be determined:
1. The distribution of midterm and final exam scores for the students. This would allow you to see the range of scores and the overall performance of the students.
2. The average midterm and final exam scores for the students. This would give you an idea of the average performance of the students on each exam.
3. The correlation between final exam and midterm scores. This would indicate if there were a relationship between performance on the midterm and final exams.
4. The distribution of total points calculated for each student. This would allow you to see the range of total scores and the overall performance of the students.
To know more about Data:
https://brainly.com/question/10980404
#SPJ4
The flight time from Boston to London is 6 hours 20 minutes. I arrive London at 4:05pm. What time did I set off from Boston
Answer:
Step-by-step explanation:
4:05pm go back 4hours and it’s 12:05, then go back another 2 hours, 10:05, then go back another 20mins and it’s 9:45am
Find the compounded ratio of 2:3 and 9:7.
Answer:
Step-by-step explanation:
Compound ratio of 2:3 and 9:7 is
2x9=18
3x7=21
Answer: 18:21
Tallulah wants to buy a car for \$18,500$18,500, but can only get a loan from the bank for \$15,725$15,725. What percentage does Tallulah have to put down in order to pay for the car?
The percentage Tallulah have to put down in order to pay for the car is given by the equation A = 15 %
What is Percentage?A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, %
Given data ,
Let the percentage Tallulah have to put down in order to pay be A
Now , the equation will be
The price of the car = $ 18,500
The amount of money Tallulah can get from the bank = $ 15,725
So , the remaining amount = price of the car - amount of money Tallulah can get from the bank
Substituting the values in the equation , we get
The remaining amount = 18,500 - 15,725
The remaining amount = $ 2,775
Now , $ 2,775 = A % of price of the car
So , 2,775 = ( A/100 ) x 18,500
On simplifying the equation , we get
Divide by 18,500 on both sides of the equation , we get
A/100 = 0.15
Multiply by 100 on both sides of the equation , we get
A = 15 %
Hence , the percentage is 15 %
To learn more about percentage click :
https://brainly.com/question/12861068
#SPJ1
Find the value of Y.
The value of y is 13√2 (optionB)
What is trigonometric ratio?Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle with respect to any of its acute angles are known as the trigonometric ratios of that particular angle.
Sin(tetha) = opp/hyp
cos (tetha) = adj/hyp
tan(tetha) = opp/adj
therefore cos 45 = 13/y
1/√2 = 13/y
y = 13√2
therefore the value of y is 13√2
learn more about trigonometric ratio from
https://brainly.com/question/24349828
#SPJ1
Solve with the box method
The expanded expression is [tex]2x^4 + 3x^3 - 10x^2 + 6x - 1.[/tex]
How to calculate the expression?[tex](2x^2 - 3x + 1)(x^2 + 3x - 1)[/tex] can be expanded by multiplying each term in the first equation by each term in the second equation using the distributive property. increase.
= [tex]2x^2(x^2 + 3x - 1) - 3x(x^2 + 3x - 1) + 1(x^2 + 3x - 1)[/tex]
Each term can then be simplified by multiplying by the coefficient and adding the exponent of x.
= [tex]2x^4 + 6x^3 - 2x^2 - 3x^3 - 9x^2 + 3x + x^2 + 3x - 1[/tex]
Then you can combine similar terms.
= [tex]2x^4 + (6x^3 - 3x^3) + (-2x^2 - 9x^2 + x^2) + (6x - 1)[/tex]
= [tex]2x^4 + 3x^3 - 10x^2 + 6x - 1[/tex]
So the expanded expression is [tex]2x^4 + 3x^3 - 10x^2 + 6x - 1.[/tex]
To know more about multiply visit:
brainly.com/question/23536361
#SPJ1
Which of the following is not equivalent to 23 + ( − 27 ) − 16 − ( − 32 )
The expression that is not equivalent is 23 + (-27) + 16 + 32. Option C
What is PEDMAS?PEDMAS is described as a mathematical acronym that represents the arithmetic operations in the other of their usage in calculation.
They are;
ParenthesesExponentDivisionMultiplicationAdditionSubtractionFrom the information given, we have that;
23 + ( − 27 ) − 16 − ( − 32 )
expand the parentheses, we get;
23 - 27 - 16 + 32
Add the values
23 - 27 - 16
Now, subtract the values
-20
Hence, the value is -20
Learn about PEDMAS on:
https://brainly.com/question/345677
#SPJ1
The complete question
Which of the following is not equivalent to 23 + ( − 27 ) − 16 − ( − 32 )
23 - 27 - 16 + 3223 - 27 - 16- (-32)23 + (-27) + 16 + 3223 + (-27) + (-16)- (-32)Type your response in the box. Here is a function that describes a sequence called the Lucas numbers, which is similar to the Fibonacci sequence: f(n) = f(n – 1) + f(n – 2); f(1) = 2; f(2) = 1. Describe in words the relationship between the terms created by this algebraic rule. List the first six terms of the sequence. Find the 12th term.
The first six terms of the sequence are 2, 1, 3, 4, 7, and 11.
The 12th term is 199.
What is a function?A function is a relationship between inputs where each input is related to exactly one output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
f(1) = 2
f(2) = 1
f(n) = f(n - 1) + f(n - 2)
Now,
For n = 3,
f(3) = f(3 - 1) + f(3 - 2) = f(2) + f(1) = 1 + 2 = 3
f(4) = f(4 - 1) + f(4 - 2) = f(3) + f(2) = 3 + 1 = 4
f(5) = f(5 - 1) + f(5 - 2) = f(4) + f(3) = 4 + 3 = 7
We see that,
The next sequence is the addition of the previous two sequences.
So,
The sequence is:
2, 1, 3, 4, 7, 11, 18, 29, 47, 76, 123, 199
i.e
12th term = 199.
Thus,
First six terms of the sequence = 2, 1, 3, 4, 7, 11
12th term = 199.
Learn more about functions here:
https://brainly.com/question/28533782
#SPJ1
Answer: The first term of the sequence is 2, and the second is 1. The function adds the previous two terms to get the next term.
To get the first six terms of the sequence, start by finding the third term by substituting the values of the first two terms in the function:
f(3) = f(2) + f(1) = 1 + 2 = 3.
In the same way, find the remaining three terms and get the sequence as (2, 1, 3, 4, 7, 11, . . .).
To find the 12th term of the sequence, continue using the rule to find all terms until the 12th. So, the sequence is (2, 1, 3, 4, 7, 11, 18, 29, 47, 76, 123, 199, . . .).
The 12th term is 199.
Step-by-step explanation:
Edmentum Answer
Matt has 15540 legos in his collection.Clayton has 25532 legos in his collection. Carlos has half as many as the difference between the number of legos Clayton and Matt have. How many legos does Carlos have?
A person invested $8, 700 in an account growing at a rate allowing the money to
double every 15 years. How long, to the nearest tenth of a year would it take for the
value of the account to reach $23, 100?
The time it takes for the balance of the account to reach $23,100 is given as follows:
21 years.
How to model the situation?An exponential function is defined as follows:
y = ab^(x/n).
In which the parameters are defined as follows:
a is the initial value.b is the rate of change.n is the time needed for the rate of change.In the context of this problem, the parameter values are given as follows:
a = 8700, b = 2, n = 15.
Hence the function for the balance after x years is given as follows:
y = 8700(2)^(x/15).
Then the time needed for a balance of $23,100 is given as follows:
23100 = 8700(2)^(x/15).
2^(x/15) = 23100/8700
x/15 = log2(23100/8700)
x/15 = 1.41
x = 15 x 1.41
x = 21 years.
More can be learned about exponential functions at https://brainly.com/question/30113628
#SPJ1
Have been completely stuck can I get some help on this?
Answer:
1/2x + 6
4
-2x + 5
Step-by-step explanation:
Find the slope (rise over run) and the y intercept for each function.
19.5 is equal to 4 times some number. What is the number?
Answer:
x=4.875
Step-by-step explanation:
19.5=4x
19.5/4=4.875
x=4.875
Check:
4.875×4=19.5
in which quadrant is the point ( - 2 , - 3 ) located? A. quadrant iv B. quadrant iii C. quadrant i D. quadrant ii
Since both the coordinates of (-2,-3) are negative the point lies in option B: quadrant iii.
What is a quadrant?
A quadrant is an area or section of a cartesian plane that results from the intersection of two axes. It is used to establish a point's location in a plane.
Consider the point A = (x,y) given in the coordinate system, where x and y are arbitrary numbers.
If x and y are positive numbers then point A is in the first quadrant.
If x is negative number and y is positive then point A is in the second quadrant.
If x and y are negative numbers then point A is in the third quadrant.
If x is positive number and y is negative then point A is in the fourth quadrant.
Now the given point is (-2,-3).
The first coordinate of this point is a negative number, and the second is also negative.
So, the point lies in third quadrant.
Therefore, (-2,-3) is in 3rd quadrant.
To learn more about quadrant from the given link
https://brainly.com/question/28587485
#SPJ4
how factors and multiples realted
Factors are the numbers that divide the supplied number exactly and are multiplied by another number to get specific numbers.
what is prime factor ?A prime factor is any semi natural integer that is able to divided only by itself and by 1. Actually, a few of the initial number theory are 2, 3, 5, 7, 11, and so forth. a sum that has multiplied to yield a new sum. For illustrate, if we divide 15 by 3 and 5, we get 3 5 = 15. components: All prime but non-composite components are referred to here as prime factors. 2, 3, and 5 are a some of the major determinants of 30. It is essential to list 2 twice as 2 2 3 (or 22 3) in order to factorise 12 since only 2 and 3 represent prime factors of 12. 2 + 3 can really be added to make 12.
given
As contrast to multiples, which are multiplied by another number to produce particular numbers, factors are the numbers that split the supplied number exactly.
Factors are the objects that numbers can be multiplied by one another to produce another number (e.g., 1, 2, 3, and 6 are factors of 6). When you multiply a number by an integer, you obtain multiples (e.g., 20 is a multiple of 4).
e.g., 1, 2, 3, and 6 are factors of 6
e.g., 20 is a multiple of 4
Factors are the numbers that divide the supplied number exactly and are multiplied by another number to get specific numbers.
To know more about prime factor visit:
https://brainly.com/question/29775157
#SPJ1
Answer attached question, show full working and explain what you are doing in each step
Answer:
the required equation is x² -10x +18 = 0
Step-by-step explanation:
Given side x and diagonal 8 cm of a rectangle with perimeter 20 cm, you want to show that the value of x satisfies an equation of the form ...
x² +ax +b = 0 . . . . . where a and b are integers.
PerimeterThe perimeter is the sum of the side lengths. It can be expressed by the formula ...
P = 2(L +W)
Solving for W gives ...
W = P/2 -L
For the given rectangle, the width is ...
W = 20/2 -x = 10 -x
DiagonalThe length of the diagonal is related to the length and width of the rectangle by the Pythagorean theorem.
c² = a² +b²
8² = x² +(10 -x)² = 2x² -20x +100
32 = x² -10x +50 . . . . . . . . divide by 2
x² -10x +18 = 0 . . . . . . . . . . subtract 32
This shows that x must satisfy a quadratic of the form x² +ax +b = 0, where a=-10, and b=18, both integers.
__
Additional comment
The vertex form of the equation is ...
(x -5)² -7 = 0
This has solutions ...
x = 5 ±√7 ≈ {2.354, 7.646} . . . . centimeters
Approximate the area between the x-axis and the graph of f(x) = x² + 3 over the interval [0, 2]
by calculating the sum of the areas of 4 rectangles with…….
The approximate area between the x-axis and the function, f(x) = x² + 3, obtained by finding the sum of the of the four rectangles is Area ≈ 9.75
What is the area between the x-axis and the graph of a function?The area between the x-axis and the graph under a function can be referred to as the area under a curve of the function, which can be found using definite integrals.
The area between the x-axis and the function f(x) = x² + 3 over the interval [0, 2], can be found by finding the area of the rectangular bars, A, in the figure as follows;
The values at the endpoints of the rectangles are; 0.5, 1, 1.5, and 2
Therefore;
f(0.5) = 0.5² + 3 = 3.25
f(1) = 1² + 3 = 4
f(1.5) = 1.5² + 3 = 5.25
f(2) = 2² + 3 = 7
Therefore; A = 0.5 × f(0.5) + 0.5 × f(1) + 0.5 × f(1.5) + 0.5 × f(2)
Plugging in the values of the function, we get;
Area ≈ 0.5 × 3.25 + 0.5 × 4 + 0.5 × 5.25 + 0.5 × 7 = 9.75
The approximate area between the x-axis and the graph of f(x) = x² + 3 over the interval [0, 2] is about 9.75 square units
Learn more on the area under a curve here: https://brainly.com/question/30074838
#SPJ1
write the given argument in words and deter- mine whether each argument is valid. Let p: The for loop is faulty. q: The while loop is faulty.
r: The hardware is unreliable. s: The output is correct. p → (q V r) q → (p V s) p V -q
-s
_________
p V r
All the premises are true and conclusion are also true in all critical rows, then argument is valid. Conclusion (S) is not true in all critical rows, so argument is not valid.
What is for loop?In mathematics, the word "loop" has several different definitions. The simplest definition of a loop is a closed curve whose beginning and terminal points meet in the basepoint, a fixed point. Formally, a loop is a continuous map if is a topological space and.
p: The for loop is faulty.
q: The while loop is faulty.
r: The hardware is unreliable.
s: The output is correct.
p→ (qVr)
q→ (pVs)
pV→q
→s
.............................
∴ pVr
argument in words.
The for loop is faulty then the while loop is faulty or the hardware is unreliable.
The white loop is faulty then the for loop is faculty or the output is correct.
The for loop is faulty or the white loop is not faulty.
The output not correct.
...................................................................................................................
∴ The for loop is faulty or the hardware is unreliable.
next, we determine the argument validity -
Premise S₁: p→ (qvr)
Premise S₂: q→ (pvs)
Premise S₃: pv→q
Premise S₄: →s
.............................
∴ Conclusion S: pvr
When all the premises are true and conclusion are also true in all critical rows, then argument is valid.
Here, conclusion (S) is not true in all critical rows, so argument is not valid.
To know more about premises refer to:
https://brainly.com/question/30466861
#SPJ4
The ratio of cats to dogs is 4:5 if there are 20 dogs how many are there ?
SHOW YOUR WORKG!
Answer: 16 cats
Step-by-step explanation: how many times does 5 go into 20?? 4 times (5x4) so you multiply 4 by 4
Explain why the equation 82.5 + 8(0.25x)= 338.5 is equivalent to the equation 82.5 + 2x = 338.5
Step-by-step explanation:
because 0.25 = 1/4.
so, it is actually
82.5 + 8×(1/4)x = 338.5
which is then simplified
82.5 + (8/4)x = 338.5
82.5 + 2x = 338.5
Step-by-step explanation:
[tex]\displaystyle\\8(0.25x)=8(\frac{25}{10}x)=\frac{8*25}{100} x=\frac{200}{100}x=2x[/tex]
Thus, 82.5+8(0.25x)=338.5 ≡ 82.5+2x=338.5
please help i will award brainliest
The given diagram in the image is dilated by a scale factor of 1.5.
What is a scale factor?The scale factor is defined as the proportion of the new image's size to that of the previous image. Dilation is the process of increasing an object's size without altering its shape. Depending on the scale factor, the object's size may increase or decrease
The coordinate point of the image is at 2. After dilation, the point will reach the coordinate at 5.
The scale factor of the point will be calculated as:-
Scale factor = 9 / 6
Scale factor = 1.5
Therefore, the scale factor for the given diagram in the image is 1.5.
To know more about scale factors follow
https://brainly.com/question/25722260
#SPJ1
the follow set of data represents orders filled per day, find the sample standard deviation: 5, 13, 9, 10, 5, 12 round your answer to one decimal place.
The Standard deviation of data(5, 13, 9, 10, 5, 12) that represents orders filled per day is 3.4
The sample standard deviation formula looks like this:
s = √Σ(X-x)² / √n-1
Where….
s = sample standard deviation
Σ = sum of…
X = each value
x = sample mean
n = number of values in the sample
We have,
Number of values in the sample, n = 6
sample mean, x = 5+13+9+10+5+2 / 6 = 9
So sample standard deviation, S = √Σ(X-x)² / √n-1
s = √58/√5
s = 7.6/2.2
s = 3.4
Therefore sample standard deviation of data that represents orders filled per day is 3.4
Visit here to learn more about Standard deviation: https://brainly.com/question/23907081
#SPJ4
what is the weight of a 3-pound human brain in ounces
Answer:
The average weight of a 3-pound human brain in ounces is approximately 48 ounces.
A researcher interested in the effectiveness of organized diet groups on weight loss weighed five clients after several weeks on the program. The weight-loss scores (in pounds) were as follows: 13 12 6 9 9 10 Calculate the (a) range, (b) inter-quartile range, and (c) variance and standard deviation for these weight-loss scores.
Range = 7. IQR = 4.5. Variance: 8.67, Std Dev: 2.96 when researcher organized diet groups on weight loss weighed five clients after several weeks on the program.
The range of the weight-loss scores can be calculated by subtracting the smallest value from the largest value. In this case, the range would be
13 - 6 = 7.
The inter-quartile range (IQR) is calculated as the difference between the 75th percentile and the 25th percentile of the data.
IQR: 11.25 - 6.75 = 4.5
To calculate the variance, first find the mean weight-loss score by summing all the scores and dividing by the number of clients: (13 + 12 + 6 + 9 + 9 + 10) / 6 = 9.17. Next, subtract the mean from each score and square the result for each client:
[tex](13 - 9.17)^2 = 3.69\\(12 - 9.17)^2 = 1.69\\(6 - 9.17)^2 = 16.0\\(9 - 9.17)^2 = 0.02\\(9 - 9.17)^2 = 0.02\\(10 - 9.17)^2 = 0.69[/tex]
Next, sum the squared deviations and divide by the number of clients minus one (n-1):
(3.69 + 1.69 + 16.0 + 0.02 + 0.02 + 0.69) / (6-1) = 4.83
The variance is 4.83 and the standard deviation is the square root of the variance: [tex]\sqrt{(4.83)} = 2.19.[/tex]
Learn more about IQR :
https://brainly.com/question/15191516
#SPJ4
Write the solution set of the given homogeneous system in parametric vector form. x1 + 2x2-15x3 = 0 2x1 + x2-15x3-0 X1X2 where the solution set is x = | x2 X3 x=x3 (Type an integer or simplified fraction for each matrix element.
The solution set of the given homogeneous system in parametric vector form is x₁ = 5 = x₂ , x₃ = 1.
What is parametric vector form?
The identity matrix's two columns, which stand in for the two leading coefficients in the row echelon form of the original matrix, are added to create the parametric vector.
We are given set of equations as:
x₁ + 2x₂ - 15x₃ = 0
2x₁ + x₂ - 15x₃ = 0
-x₁ + x₂ = 0
Now, representing this in the matrix form, we get
[tex]\left[\begin{array}{cccc}1&2&-15&0\\2&1&-15&0\\-1&1&0&0\end{array}\right][/tex]
Now, we will reduce the matrix i.e. in row echelon form using elementary operations
From this, we get
[tex]\left[\begin{array}{cccc}1&0&-5&0\\0&1&-5&0\\0&0&0&0\end{array}\right][/tex]
So, we get that x₃ is the free variable.
Now, representing this in the parametric vector form, we get
x₁ - 5x₃ = 0
x₂ - 5x₃ = 0
x₃ = x₃
From this, we get
x₁ = 5x₃
x₂ = 5x₃
x₃ = x₃
So, we now get
x = [tex]\left[\begin{array}{c}x_{1} &x_{2} &x_{3} \end{array}\right][/tex]
This is equal to
x = [tex]\left[\begin{array}{c}5x_{3} &5x_{3} &x_{3} \end{array}\right][/tex]
Thus,
x = [tex]\left[\begin{array}{c}5 &5 &1 \end{array}\right][/tex]
Hence, the solution is x₁ = 5 = x₂ , x₃ = 1.
Learn more about parametric vector form from the given link
https://brainly.com/question/30465719
#SPJ4
what quantity of 63% chlorine solution must be mixed with a 12% chlorine solution to produce 3876 ml of 15% solution
6^5 is the same thing as what number squared.
Answer:
Below
Step-by-step explanation:
6^5 = x^2
7776 = x^2 sqrt both sides
x = ± 88.18
Is the integer x divisible by 6 ? (1) x + 3 is divisible by 3. (2) x + 3 is an odd number.Answer choices:
(a) Statement 1 alone is sufficient, but Statement 2 alone is not sufficient.
(b) Statement 2 alone is sufficient, but Statement 1 alone is not sufficient.
(c) Either statements are NOT sufficient, but BOTH together are sufficient.
(d) Each statement ALONE is sufficient.
(e) Neither statement Alone is sufficient.
For the statement "Integer x divisible by 6" the option C is correct.
Either statements are NOT sufficient, but BOTH together are sufficient.
What is integer?
The Latin term "Integer," which implies entire or intact, is where the word "integer" first appeared. Zero, positive numbers, and negative numbers make up the particular set of numbers known as integers.
(1) x + 3 is divisible by 3
This means that x is a multiple of 3.
Hence x + 3 is a multiple of 3.
But x could be 0, 3, 6. If x = 3, x is not divisible by 6.
Otherwise it is.
So, this statement is insufficient.
(2) x + 3 is an odd number
This means that x is an even number.
X can be 6, or 10.
So, this statement is insufficient.
Together -
From (1) it is known that x is a multiple of 3.
Hence X can be 0,3,6,9,12,15,18,21,24,27,30.
From (2) it is known that x is even.
Hence X can be 0,6,12,18,24,30.
Therefore, x is divisible by 6.
To learn more about integer from the given link
brainly.com/question/26009132
#SPJ4
Beau buys a skateboard with a price tag of $82.50. The tax rate is 8%. How much does he pay, including tax?
Enter the correct answer in the box.
$89.1 is the amount paid by Beau to buy skateboard.
What is Percentage?percentage, a relative value indicating hundredth parts of any quantity.
Given that Beau buys a skateboard with a price tag of $82.50
The tax rate is 8%
Let us find what 8% of 82.50
Convert 8% to decimal value
8/100=0.08
0.08×82.5=$6.6
Now let us find the amount he paid including tax
$82.50+$6.6
$89.1
Hence, $89.1 is the amount paid by Beau to buy skateboard.
To learn more on Percentage click:
https://brainly.com/question/28269290
#SPJ1
What is the Mode, Median, Mean and range for the following $32, $87, $67, $32, $32, $87, $77 and $25
Answer:
Mean = $54.875 ($54.88 to nearest cent because $54.875 is impossible)
Median = $32
Mode = $32
Step-by-step explanation:
Mean = all numbers added together / amount of numbers in dataset
$32 + $87 + $67 + $32 + $32 + $87 + $77 + $25 = $439
$439/8= $54.875 = $54.88 to the nearest cent.
Median =
1. Order the numbers. Here's how it's ordered: $25,$32,$32,$32,$67,$77,$87
2. Calculate the middle position with the formula [tex](n+1)/2[/tex] where n is the amount of numbers in dataset (for odd datasets) or find the two middle values (for even datasets.) In this case, it is an odd dataset, so we use the formula.
(7+1)/2 = 4
In the 4th position, the number is $32, so the median is $32.
Mode = The numbers that comes up most often.
In this case, $32 comes up 4 times, which is the most, so the mode is $32.
Brainliest please!
A train leaves San Diego at 4:00 PM. A second train leaves the same city in the same direction at 6:00 PM. The second train travels 42mph faster than the first. If the second train overtakes the first at 8:00 PM, what is the speed of each of the two trains?
The non-right angles of a right triangle are in the ratio 1: 5, Write an equation that could be used to find the measure of each angle.
Answer: 6x=90
Step-by-step explanation:
We know that one angle in a right triangle is 90 degrees and the sum of all the angles is 180, so we can start by subtracting 90 from 180. We are left with 90 and now we have angle ratios which represent fractional quantities. We know that one of these quantities is 5 and the other is 1. Their sum is 6 and equals 90. So the proportion would be 6x = 90. The larger angle is 75 degrees and the smaller one is 15.