I need to figure out what 12-5k-4kx=y for x is. someone help me, please!
Answers
Answer:
im pretty sure the answer is 3x or x = 3
(Given) 12−5x−4kx=y
(Subtract 12 from both sides) −4kx−5x+12+−12=y+−12
(Simplify) −4kx−5x=y−12
(Factor out variable x) x(−4k−5)=y−12
(Divide both sides by -4k-5) x(−4k−5) / −4k−5 = y−12 / −4k−5
(Answer) x = \(\frac{-y + 12}{4k+5}\)
Hopefully this is correct, have a nice day! :D
Related Questions
Help! Almost a 50 Pointer! Lets see if you can do it!
Answers
answer: basketball c;
A,B,C, or D?
________
Answers
Answer: It is
D. Blue
!
Round to the nearest hundredth
Answers
Answer:
hope this is correct
Answer:
AC ≈ 2.87
Step-by-step explanation:
Using the sine ratio in the right triangle
sin35° = \(\frac{opposite}{hypotenuse}\) = \(\frac{AC}{AB}\) = \(\frac{AC}{5}\)
Multiply both sides by 5
5 × sin35° = AC , thus
AC ≈ 2.87 ( to the nearest hundredth )
As an estimation we are told £3 is €4.
Convert €36 to pounds.
Answers
Answer:
30.77 Pounds
hope that helped <3
A store manager kept track of the number of newspapers sold each week over a seven-week period. The results are shown below. \( 87,87,215,154,288,235,231 \) Find the median number of newspapers sold.
Answers
The median number of newspapers sold over seven weeks is 223.
The median is the middle score for a data set arranged in order of magnitude. The median is less affected by outliers and skewed data.
The formula for the median is as follows:
Find the median number of newspapers sold. (87, 87, 215, 154, 288, 235, 231)
We'll first arrange the data in ascending order.87, 87, 154, 215, 231, 235, 288
The median is the middle term or the average of the middle two terms. The middle two terms are 215 and 231.
Median = (215 + 231)/2
= 446/2
= 223
In statistics, the median measures the central tendency of a set of data. The median of a set of data is the middle score of that set. The value separates the upper 50% from the lower 50%.
Hence, the median number of newspapers sold over seven weeks is 223.
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the problem with measurement is that researchers cannot account for errors statistically question 1 options: true false
Answers
It is partially true that the problem with measurement is that researchers cannot account for errors statistically.
Why do errors occur in measurement?During measurements, there is a huge possibility that an error will occur and even no result or measurement can be 100% accurate. This happens due to many factors like mistakes, approximations, and other physical factors.
Coming to the statement, definitely researchers cannot account for errors. This is true, but this is not a problem since it is something that will, for sure, occur. The major goal is towards minimizing it.
So, the given statement is partially true.
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zle
1. A shoe box manufacturer is creating a box with
the following dimensions. Calculate the volume
of the shoe box in cubic inches.
5 in
8 in
12 in
Created with DOCE
i need help
Answers
Answer: 480 in cubed
Step-by-step explanation: volume is length * width * height so 8*5*12=480
PLEASE ANSWER ASAP!!!!!! WILL GIVE BRAINLIEST!!!
Answers
Answer ya so 1 is the answer
Step-by-step explanation:
Answer:
1
Step-by-step explanation:
Given expression:
\(\sf \left(\dfrac{3a^{-2}b^6}{2a^{-1}b^5} \right)^2\)
To find the value of the expression when a = 3 and b = -2, substitute these values into the expression:
\(\implies \sf \left(\dfrac{3(3)^{-2}(-2)^6}{2(3)^{-1}(-2)^5} \right)^2\)
\(\textsf{Apply exponent rule} \quad a^{-n}=\dfrac{1}{a^n}\)
\(\sf \implies \left(\dfrac{3\left(\dfrac{1}{3^2}\right)(-2)^6}{2\left(\dfrac{1}{3^1} \right)(-2)^5} \right)^2\)
\(\sf \implies \left(\dfrac{3\left(\dfrac{1}{9}\right)(-2)^6}{2\left(\dfrac{1}{3} \right)(-2)^5} \right)^2\)
\(\sf \implies \left(\dfrac{\left(\dfrac{3}{9}\right)(-2)^6}{\left(\dfrac{2}{3} \right)(-2)^5} \right)^2\)
\(\sf \implies \left(\dfrac{\left(\dfrac{1}{3}\right)(-2)^6}{\left(\dfrac{2}{3} \right)(-2)^5} \right)^2\)
\(\textsf{Apply exponent rule} \quad (-a)^n=a^n,\:\: \textsf{ if }n \textsf{ is even}\)
\(\textsf{Apply exponent rule} \quad (-a)^n=-a^n,\:\: \textsf{ if }n \textsf{ is odd}\)
\(\sf \implies \left(\dfrac{\left(\dfrac{1}{3}\right) (2^6)}{\left(\dfrac{2}{3} \right) (-(2^5))} \right)^2\)
\(\sf \implies \left(\dfrac{\left(\dfrac{1}{3}\right) (64)}{\left(\dfrac{2}{3} \right) (-32)} \right)^2\)
\(\sf \implies \left(\dfrac{\left(\dfrac{1 \times 64}{3}\right)}{\left(\dfrac{2 \times -32}{3} \right)} \right)^2\)
\(\sf \implies \left(\dfrac{\dfrac{64}{3}}{\dfrac{-64}{3}} \right)^2\)
When dividing fractions, flip the second fraction and multiply it by the first:
\(\implies \sf \left( \dfrac{64}{3} \times \dfrac {3}{-64} \right)^2\)
\(\implies \sf \left( \dfrac{64 \times 3}{3 \times (-64)}\right)^2\)
\(\implies \sf \left( \dfrac{192}{-192}\right)^2\)
\(\implies \sf \left(-1\right)^2\)
\(\textsf{Apply exponent rule} \quad (-a)^n=a^n,\:\: \textsf{ if }n \textsf{ is even}\)
\(\sf \implies 1^2=1\)
1.
Identify the vertex of the graph. Tell whether it is a minimum or maximum.
A. (–2, –1); maximum
B. (–2, –2); maximum
C. (–2, –1); minimum
D. (–2, –2); minimum
Answers
Answer:
D. (–2, –2); minimum
Step-by-step explanation:
It’s D you got to see the lowest part of the graph and you will call it mini except if the graph was going down you will call that point maximum.
Answer:
D. (-2, -2); minimum
Step-by-step explanation:
The vertex is the where the curve turns up/down which divides the figure into two halves.
From the given graph, the graph turns up at (-2, -2) , the graph moves down, therefore, the vertex (-2, -2); minimum.
Hope this will helpful.
Thank you.
a fair coin is tossed 28 times. what is the probability that at most 25 tails occur? a) 0.99998628 b) 0.00000152 c) 0.99999848 d) 0.00001220 e) 0.01001372 f) none of the above.
Answers
The probability that at most 25 tails occur is 0.99999848.
We know that,
P(x = x) = ⁿCₓ × pˣ × \(q^{n-x}\)
p = probability of success = 0.5
n = number of trials = 28
q = 1 - p = 0.5
The probability of the tail occurring at most 25 times can be written as
P(X ≤ 25) = P (X = 0) + P(X = 1) + ..... + P(X = 25)
Using a binomial probability calculator,
P(X ≤ 25) = 0.99999848
Therefore the probability that at most 25 tails occur is 0.99999848
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pls hurry. 10. Select all numbers that represent a solution of the equation below.
Answers
\(x^2=196\\x=-\sqrt{196} \vee x=\sqrt{196}\\x=-14 \vee x=14\)
Therefore, it's A and D.
Q. Which of these graphs matches the equation y = -3x?
Answers
Answer: C
.......................
Answer: A
Step-by-step explanation:
Anne has $5000 in her savings account and decides to leave there for three years. After one year the account increases by 10%, the following year it decreases by 5% and in the third year it increase by 15%. How much is in the account after three years?
Answers
Answer:
$6000
increases by 10% but you then take away 5% fron the 10 as it decreases by 5. meaning you have incresed by 5% and adding the 15% equals 20%. so the account increases by 20%. 20% of 5000 equals 1000. add the two together and you get 6000. so the account total now is $6000
The major key with 2 flats is the key of _____. f major e♭ major a♭ major b♭ major *subject is music*
Answers
The major key with 2 flats is :
B♭ major
Answer:
The key of B♭ major has two flats
Step-by-step explanation:
An accidental sign consisting of two flat symbols ♭that lower a note by two half steps two semitones. The double flat symbol alters the pitch of the note to which it is attached as well as any subsequent occurrence of the same note identical line or space in the same measure.
Hope this helps
~Heaven~
7. On Saturday, a craft store had 150 visitors, and 80% of the visitors made a purchase. Of the customers who made a purchase, 39 customers bought one item, 57 customers bought two items, and the remaining customers bought three or more items. How many customers bought three or more items at the craft store?
Answers
Answer:
24 customers bought 3+ items.
Step-by-step explanation:
80% of 150 = 120
39/120 bought 1 item
57/120 bought 2 items
39 + 57 = 96
120 - 96 = 24
24 customers bought 3+ items.
Hope this helps! :)
Please help! I will give Brainliest!
Who is correct?
Answers
Answer:
The inside angles have to equal 180 degrees so
So Hazel is correct
Ulse the standard normal distribution or the f-distribution to construct a 95% confidence interval for the population meare Justify your decion, il newter distribution can bo used, explain why. Interpret the results In a randorn sample of 46 people, the mean body mass index (BMI) was 27.2 and the standard devation was 6.0f. Which distribution should be used to construct the confidence interval? Choose the correct answer below. A. Use a 1-distribuition because the sample is random, the population is normal, and σ is uricnown 8. Use a normal distribution because the sample is random, the population is normal, and o is known. C. Use a nomal distribution because the sample is random, n≥30, and α is known. D. Use a t-distribution because the sample is random, n≥30, and σ is unknown. E. Neither a normal distribution nor a t-distribution can be used because either the sample is not random, of n < 30 , and the population a nat known to be normal.
Answers
We can be 95% confident that the true population mean BMI is between 25.368 and 29.032.
A 95% confidence interval for the population mean can be constructed using the t-distribution when the sample size is small (<30) or the population standard deviation is unknown.
In this case, we have a random sample of 46 people with a mean body mass index (BMI) of 27.2 and a standard deviation of 6.0.
Thus, we need to use the t-distribution to construct the confidence interval.
The formula for the confidence interval is as follows:
Upper limit of the confidence interval:27.2 + (2.013) (6.0/√46) = 29.032Lower limit of the confidence interval:27.2 - (2.013) (6.0/√46) = 25.368
Therefore, the 95% confidence interval for the population mean BMI is (25.368, 29.032).
This means that we can be 95% confident that the true population mean BMI is between 25.368 and 29.032.
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. You have a job as a salesman. You make $15.00 an hour (h) plus a
commission of 5.5% on all of your sales (s). Create an equation that
will show your pay (p) based upon your hours (h) worked and sales
(s).
Answers
Answer:
wait what
Step-by-step explanation:
Suppose that the daily log return of a security follows the model rt = 0.02 +0.5rt-2 + et where {e} is a Gaussian white noise series with mean zero and variance0.02. What are the mean and variance of the return series rt? Compute the lag-1 and lag-2 autocorrelations of rt. Assume that r100 = -0.01, and r99 = 0.02. Compute the 1- and 2-step-ahead forecasts of the return series at the forecast origin t = 100. What are the associated standard deviation of the forecast errors?
Answers
Mean of rt = 0.02,
Variance of rt = 0.02,
Lag-1 Autocorrelation (ρ1) = -0.01,
Lag-2 Autocorrelation (ρ2) = Unknown,
1-step ahead forecast = -0.005,
2-step ahead forecast = 0.02,
The standard deviation of forecast errors = √0.02.
We have,
To find the mean and variance of the return series, we can substitute the given model into the equation and calculate:
Mean of rt:
E(rt) = E(0.02 + 0.5rt-2 + et)
= 0.02 + 0.5E(rt-2) + E(et)
= 0.02 + 0.5 * 0 + 0
= 0.02
The variance of rt:
Var(rt) = Var(0.02 + 0.5rt-2 + et)
= Var(et) (since the term 0.5rt-2 does not contribute to the variance)
= 0.02
The mean of the return series rt is 0.02, and the variance is 0.02.
To compute the lag-1 and lag-2 autocorrelations of rt, we need to determine the correlation between rt and rt-1, and between rt and rt-2:
Lag-1 Autocorrelation:
ρ(1) = Cov(rt, rt-1) / (σ(rt) * σ(rt-1))
Lag-2 Autocorrelation:
ρ(2) = Cov(rt, rt-2) / (σ(rt) * σ(rt-2))
Since we are given r100 = -0.01 and r99 = 0.02, we can substitute these values into the equations:
Lag-1 Autocorrelation:
ρ(1) = Cov(rt, rt-1) / (σ(rt) * σ(rt-1))
= Cov(r100, r99) / (σ(r100) * σ(r99))
= Cov(-0.01, 0.02) / (σ(r100) * σ(r99))
Lag-2 Autocorrelation:
ρ(2) = Cov(rt, rt-2) / (σ(rt) * σ(rt-2))
= Cov(r100, r98) / (σ(r100) * σ(r98))
To compute the 1- and 2-step-ahead forecasts of the return series at
t = 100, we use the given model:
1-step ahead forecast:
E(rt+1 | r100, r99) = E(0.02 + 0.5rt-1 + et+1 | r100, r99)
= 0.02 + 0.5r100
2-step ahead forecast:
E(rt+2 | r100, r99) = E(0.02 + 0.5rt | r100, r99)
= 0.02 + 0.5E(rt | r100, r99)
= 0.02 + 0.5(0.02 + 0.5r100)
The associated standard deviation of the forecast errors can be calculated as the square root of the variance of the return series, which is given as 0.02.
Thus,
Mean of rt = 0.02,
Variance of rt = 0.02,
Lag-1 Autocorrelation (ρ1) = -0.01,
Lag-2 Autocorrelation (ρ2) = Unknown,
1-step ahead forecast = -0.005,
2-step ahead forecast = 0.02,
The standard deviation of forecast errors = √0.02.
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Write an inequality that represents
Answers
Answer: x ≤ 4.5
Step-by-step explanation:
Since there is a closed circle on 4.5 and the ray is going left we know that x is ≤ 4.5
help plssssssssss!!!
Answers
Answer:
3/5 x 3/5 x 3/5 = 27/125
Step-by-step explanation:
3/5 to the power of 3 means you multiply 3/5 by itself 3 times.
what is the midpoint of the line segment with endpoints (-5.5, -6.1) and (-0.5, 9.1)
Answers
(-3, 1.5) or (-3, 3/2)
Explanation:
Formula for Midpoint = (x1 + x2/2, y1 + y2/2)
x1 = -5.5 and x2 = -0.5
-5.5 + -0.5 = -6/2 = -3
y1 = -6.1 and y2 = 9.1
-6.1 + 9.1 = 3/2 = 1.5 or 3/2
1 point
Which graph represents the solution x > 3?
Answers
Graph 1 represents the solution x > 3.
In Graph 1, the line is highlighted from point 3 with a white dot which is used to assert that all the values from 3 to positive infinity but 3 would not be considered. The highlighted side is toward the positive side.
In Graph 2, the line is highlighted from point 3 with a white dot which is used to assert that all the values from 3 to negative infinity but 3 would not be considered. The highlighted side is toward the negative side.
In Graph 3, the line is highlighted from point 3 with a black dot which is used to assert that all the values from 3 to positive infinity and 3 would be considered as well. The highlighted side is toward the positive side.
In Graph 4, the line is highlighted from point 3 with a black dot which is used to assert that all the values from 3 to negative infinity and 3 would be considered as well. The highlighted side is toward the negative side.
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What is the slope of the line that passes through the points (4, 6) and (-16, -18)?
Write your answer in simplest form.
Answers
Answer:
7x3=45 so substitute
Step-by-step explanation:
What is the final elevation if a bird starts at 20 m and changes 16 m?
Do not include units (meters) in your answer
Answers
Answer:
Depends if the bird is going up or down, if going up, then they are 36 (you said don't say units so i won't say it) in going up and 4 if going down! :D
Step-by-step explanation:
Determine the value of 'X
Answers
Answer:
x=22° hope it helps:)
Step-by-step explanation:
Please mark it the brainliest if you won't mind:)
(:
Answer:
x =22
Step-by-step explanation:
ABCD is a parallelogram. In parallelogram, adjacent angles are supplementary.
∠B +∠C = 180
4x + 12 + 3x + 14 = 180
Combine like terms
4x +3x + 12+ 14 = 180
7x + 26 = 180 {Subtract 26 from both sides}
7x = 180 - 26
7x = 154 {Divide both sides by 7}
x = 154/7
x = 22
An analysis of variances produces dftotal = 29 and dfwithin = 27. for this analysis, what is dfbetween?
a. 1
b. cannot be determined without additional information
c. 3
d. 2
Answers
The value of dfbetween in the analysis of variances is 2. Thus option D is correct option.
According to the statement
we have given that the df total = 29 and df within = 27. And we have to find the value of the df between.
So, For this purpose, we know that the
Analysis of variance (ANOVA) is an analysis tool used in statistics that splits an observed aggregate variability found inside a data set into two parts.
So, Df between values are the values between the value of dftotal and dfwithin.
Here df total = 29 and df within = 27
So, df between = df total - df within
Substitute the values in it then
df between = df total - df within
df between = 29 - 27
df between = 2.
So, The value of dfbetween in the analysis of variances is 2. Thus option D is correct option.
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Which of the following equations best represents the graph below?
y=-4
x + y = -4
x=-4
Answers
Answer:
x=-4
Step-by-step explanation:
x=-4 would draw a vertical line at the point (-4, 0), which is what this graph is.
Circle A has a radius of (x + 4) units. A larger circle, B, has a radius of (x + 7) units.
Part 1: Use the formula for the area of a circle (A_{Circle}=\pi r^2A C i r c l e = π r 2, where r is the radius) to write an expression for the difference in the areas of circles A and B given a common placeholder variable x rather than any specific number. Simplify your expression as much as possible, but leave your answer in terms of π and x. Show all of your simplification steps and explain your process in words.
Part 2: Use your final expression from Part 1 to find the difference in the areas for circles A and B when x = 10. You can use 3. 14 for π and approximate your final answer to the nearest whole number. Show all of your simplification steps and explain your process in words
Answers
Part 1:
The expression for the difference in the areas of circles A and B, in terms of the variable x, is \((x + 4)^2\pi - (x + 7)^2\pi .\)
Part 2:
When x = 10, the area of circle A is approximately 291 square units less than the area of circle B.
Part 1:
To find the difference in the areas of circles A and B, we need to subtract the area of circle B from the area of circle A. The formula for the area of a circle is A = πr^2, where r is the radius.
For circle A, the radius is (x + 4) units, so the area of circle A is \(A_A = \pi (x + 4)^2.\)
For circle B, the radius is (x + 7) units, so the area of circle B is \(A_B = \pi (x + 7)^2.\)
Therefore, the difference in the areas is\(A_A - A_B =\pi (x + 4)^2 - \pi (x + 7)^2.\)
To simplify this expression, we can expand the squares and combine like terms:
\(A_A - A_B =\pi (x^2 + 8x + 16) - \pi (x^2 + 14x + 49)\)
= \(\pi x^2 + 8\pi x + 16\pi - \pi x^2 - 14\pi x - 49\pi\)
=\((\pi x^2 - \pi x^2) + (8\pi x - 14\pi x) + (16\pi - 49\pi )\)
= -6πx + 16π - 49π
= -6πx - 33π.
So, the simplified expression for the difference in the areas of circles A and B is -6πx - 33π.
Part 2:
To find the difference in the areas for circles A and B when x = 10, we substitute x = 10 into the expression we obtained in Part 1.
Substituting x = 10:
Difference in areas = -6π(10) - 33π
= -60π - 33π
= -93π.
Using π ≈ 3.14, we can approximate the value:
Difference in areas ≈ -93 * 3.14
≈ -291.42.
Rounding to the nearest whole number, the difference in the areas of circles A and B when x = 10 is approximately -291.
Therefore, when x = 10, the area of circle A is approximately 291 square units less than the area of circle B.
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rema purchased 18 ounces of gold in 2005 for $414 per ounce in order to try to diversify her investment portfolio. She sold a third of her holdings in gold in 2009 at a price $953 per ounce. She sold the rest of her gold holdings in 2010 for $1,367 per ounce.
What is Prema’s profit in 2009 and 2010?
Answers
Given :
Rema purchased 18 ounces of gold in 2005 for $414 per ounce in order to try to diversify her investment portfolio.
She sold a third of her holdings in gold in 2009 at a price $953 per ounce. She sold the rest of her gold holdings in 2010 for $1,367 per ounce.
To Find :
What is Prema’s profit in 2009 and 2010.
Solution :
Price of one third ounces of gold, in 2005 is :
P = $414/3 = $138 .
Profit from selling them in 2009 is :
P1 = $(953 - 138) = $815 .
Profit from selling them in 2010 is :
P2 = $( 1367 - ( 414 - 138 ) ) = $1091 .
Therefore, Prema's profit in 2009 is $815 and 2010 is $1091.
Hence, this is the required solution.