Find the value of k in the data set so that f(x) is a linear function.
x = {-7, -2, 2, 5}
f(x) = {-15, k, 3, 9}
In order for f(x) to be a linear function, determine the value of k in the data set.
x = {-7, -2, 2, 5}
f(x) = {-15, k, 3, 9}
The value of k is {-5}.
Given that to find the value of k in the data set such that the data set represents a linear function.
Linear Function is a straight line on the coordinate plane is represented by a linear function. The formula for a linear function is f(x) = mx + b, where m and b are real values.
Here, f(x) or y is the dependent variable, m is a slope of the line, x is the independent variable and b is the y-intercept.
Here,(x,f(x)) are {(-7,-15),(-2,k),(2,3),(5,9)}
The slope of the function,
(x, f(x)) = (2,3) and (5,9)
Slope formula is m=\(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\).
Slope m= \(\frac{9-3 }{5-2}\)
Slope m=\(\frac{6}{3}\)
Slope m=2.
Using the point slope form, determine the linear function's equation.
\(y-y_{1} =m(x-x_{1})\)
Here, \((x_{1},y_{1})=(-7,-15)\) and m=2
We get
y + 15 = 2 (x + 7)
y = 2x - 1
Now at x = -2 and f(x) = k
k = 2(-2) - 1
k = -4-1
k=-5
Therefore, the value of k is -5.
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evaluate each expression based on the following table. x−3−2−10123 f(x)2363−2−0.51.25
We have the following table:
x -3 -2 -1 0 1 2 3
f(x) 2 3 6 3 -2 -0.5 1.25
f(2) - f(0) = 6 - 3 = 3
f(-3) + f(1) - f(0) = 2 + (-2) - 3 = -3
(f(3) + f(2)) / 2 = (1.25 + (-0.5)) / 2 = 0.375
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six is 3% of what number
Answer:
200
Step-by-step explanation:
A runner is running a 10 km race. It takes her 17.5 minutes to reach the 2.5 km mark. at that rate, how long would it take her to run the whole race?
Answer:
time = 70 minutes
critical thinking, teamwork, leadership, and professionalism are some of the knowledge competencies needed for career readiness. True or False
At what depth is there only 1% of surface sunlight
ANSWER
• 60 feet
,• The point is ,(60, 1)
EXPLANATION
As said, x is depth in feet, and f(x) represents the percentage of surface sunlight that reaches a depth of x feet. We have to find the value of x for which f(x) = 1,
\(1=16(0.955)^x\)Divide both sides by 16,
\(\frac{1}{16}=0.955^x\)Take logarithm to both sides to apply the rule of the logarithm of power on the right side,
\(\log (1/16)=x\log (0.955)\)Divide both sides by log(0.955),
\(x=\frac{\log (\frac{1}{16})}{\log (0.955)}\approx60ft\)In the graph this is,
The price of a new car is $28,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 6%/year compounded monthly. (Round your answers to the nearest cent. )
(a) What monthly payment will she be required to make if the car is financed over a period of 36 months? Over a period of 60 months?
36 months=$
60 months=$
(b) What will the interest charges be if she elects the 36-month plan? The 60-month plan?
36-month plan =$
60-month plan=$
(a) The monthly payment for a 36-month plan is $704.41, and for a 60-month plan is $488.08.
(b) The interest charges for the 36-month plan are $1,459.07, and for the 60-month plan are $3,369.10.
For a)
To calculate the monthly payment for a car loan, we need to use the formula for monthly payments:
M = \(P[r(1+r)^n / ((1+r)^n - 1)]\)
where M is the monthly payment, P is the principal (the loan amount), r is the monthly interest rate (the annual interest rate divided by 12), and n is the number of months over which the loan is to be repaid.
For the 36-month plan, the principal is 75% of $28,000, or $21,000. The monthly interest rate is 6% / 12, or 0.005. The number of months is 36. Plugging in these values, we get:
M = $\(21,000[0.005(1+0.005)^{36} / ((1+0.005)^{36} - 1)]\) = $704.41
For the 60-month plan, the principal, monthly interest rate, and a number of months are the same, but we change the number of months to 60:
M = $21,000[0.005\((1+0.005)^{60\) / (\((1+0.005)^{60\) - 1)] = $488.08
Therefore, the monthly payment for a 36-month plan is $704.41, and for a 60-month program is $488.08.
For b)
To calculate the total interest charges for the loan, we need to subtract the principal (the amount of the loan) from the total amount paid and round to the nearest cent:
For the 36-month plan, the total amount paid is $25,459.07 (36 x $704.41), so the interest charges are:
$25,459.07 - $21,000 = $4,459.07, rounded to $1,459.07
For the 60-month plan, the total amount paid is $29,284.80 (60 x $488.08), so the interest charges are:
$29,284.80 - $21,000 = $8,284.80, rounded to $3,369.10
Therefore, the interest charges for the 36-month plan are $1,459.07, and the 60-month plan are $3,369.10.
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Emma (who is 1.5 meters tall) wanted to measure the height of the
statue of liberty replica in her hometown. She lined herself up with a
statue's shadow so that the tip of her shadow met the tip of the
statue's shadow. She marked the spot where she was standing, which
is shown with a vertical line on the diagram. Then, she measured the
distance from where she was standing to the tip of the shadow (1.2
meters) and from the statue to the tip of the shadow (16.8m). What is
the approximate height of the statue?
In linear equation , height of the statue = 13.18 m
What in mathematics is a linear equation?
A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."In ΔDEC
tan θ = perpendicular / base
= ED/DC
tanθ = 1.5/1.2
θ = tan⁻¹ ( 1.5/1.2 )
θ = tan⁻¹ ( 1.25 )
θ = 51. 3401°
So, In Δ ABC
Sin θ = perpendicular / hypotenuse = AB/AC
Sin 51. 3401° = x/16.8
x = Sin 51. 3401° × 16.8
x = .780867809 × 16.8
x = 13.1185792
∴ height of the statue = 13.18 m
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help meeeeeeeeeeee pleaseeeeeeeeeeeeee!!
Answer: 59.2 seconds
Step-by-step explanation:
For 0 less-than x less-than startfraction pi over 2 endfraction, which expression is equivalent to startstartfraction sine (startfraction x over 2 endfraction) tangent (startfraction x over 2 endfraction) overover 1 minus cosine (x) endendfraction? a. startfraction 1 over startroot 2 (1 cosine x) endroot endfraction b. startfraction 1 over startroot 2 (1 minus cosine x) endroot endfraction c. (startroot startfraction 1 cosine (x) over 2 endfraction endroot) d. (startfraction 1 over 1 minus cosine (x) endfraction) e. (startfraction 1 cosine (x) over startroot 2 (1 minus cosine x) endroot endfraction) f. (startfraction 1 over 1 minus cosine (x) endfraction)
The single Trigonometric function is √2/2.
Trigonometric Function:
In mathematics, trigonometric functions (also called circular functions, trigonometric functions, angular functions) are real functions that relate the angles of a right-angled triangle to the ratio of the lengths of its two sides. They are widely used in all geometry-related sciences such as navigation, solid mechanics, celestial mechanics, and geodesy. They are one of the simplest periodic functions and are often used to study periodic phenomena using Fourier analysis.
The most commonly used trigonometric functions in modern mathematics are sine, cosine, and tangent. Their reciprocals are cosecane, secane, and cotangent, respectively, and are seldom used. Each of these six trigonometric functions has a corresponding inverse and a hyperbolic analogue.
According to the question:
Following are the solution to the given expression:
Given:
0 < x < π/2
\(\frac{sin \frac{x}{2} + cos \frac{x}{2} }{1-cos \frac{x}{2} }\)
To find:
value=?
Solution:
0 < x < π/2
\(\frac{sin \frac{x}{2} + cos \frac{x}{2} }{1-cos \frac{x}{2} }\)
Now,
Let x = π/2
\(\frac{sin \frac{x}{2} + cos \frac{x}{2} }{1-cos \frac{x}{2} }\)
\(\frac{\frac{1}{\sqrt{2} * 1} }{1-0}\)
\(\frac{1}{\sqrt{2} } * \frac{\sqrt{2} }{\sqrt{2} }\)
\(\frac{\sqrt{2} }{2}\)
Therefore, the answer is \(\frac{\sqrt{2} }{2}\).
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the time, in minutes, it took each of 11 students to complete a puzzle was recorded and is shown in the following list, along with the five-number summary. 9, 17, 20, 21, 27, 29, 30, 31, 32, 35, 58
No, there is only one outlier at 58 minutes.
What are outliers in data?An observation that differs abnormally from other values in a population-based random sample is referred to as an outlier. In a way, this definition defers to the analyst's (or a consensus process') judgment as to what constitutes aberrant behavior. It is vital to define typical observations before distinguishing aberrant ones.
How do you calculate the outlier?A data point is considered an outlier if it is more than 1.5 times the IQR below the first quartile or more than 1.5 times the IQR above the third quartile, according to the general criterion for utilizing it to compute outliers. The first and third quartile percentiles must be known in order to compute the IQR.
Complete question -The time, in minutes, it took each of 11 students to complete a puzzle was recorded and is shown in the following list.
9, 17, 20, 21, 27, 29, 30, 31, 32, 35, 58
One of the students who completed the puzzle claimed that there were two outliers in the data set. Based on the 1.5×IQR rule for outliers, is there evidence to support the student's claim?
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Meredith is addressing envelopes for a charity event. She has finished addressing 30 envelopes and is addressing more envelopes at the rate of 6 envelopes per hour. Meredith's sister, Lily, joined her immediately and started addressing at the rate of 9 envelopes per hour. The number of envelopes addressed by both are shown in the graph below. After how many hours will the number of envelopes addressed by Meredith and Lily be the same?
Answer:
10 hours
Step-by-step explanation:
They will both be at 90
Answer: 10 hours
Step-by-step explanation:
6x + 30 = 9x
3x = 30
x = 10
What is an equation of the image of the line y = {x - 4after a dilation of a scale factor of centered at theorigin?
We have the following function given:
\(y=x-4\)We want to apply a dilation with a scale factor k centered at the origin
Assuming that the scale factor is k, then we just need to do the following :
\(y\text{ = x}-(4\cdot k)\)And with this we preserve the condition of centered at the origin and with the dilation factor
The Sugar Sweet Company is going to transport its sugar to market. It will cost $3500 to rent trucks plus $225 for each ton of sugar transported. The total cost, C (in dollars), for transporting N tons is given by the following function. C(n)=3500+225n)
Answer:to answer this question you have to look at what the relationship is between tones of sugar and the equation C(n) = 6,500 + 225n. The question gave you a hint in parenthesis in the form of (n) tons. This statement means that the amount of sugar is n so for question 1 the 13 tons is the n value.
Q1:
C(13) = 6,500 + 225*13
C(13) = 6,500 + 2,925
C(13) = 9,425
so what does the 9,425 mean? This is the cost to transport 13 tons of sugar.
Q2:
so this part n is unknown and we are given the C(n) number.
11,450 = 6,500 + 225n
subtract the 6500 from both sides
11,450 - 6,500 = 225n
evaluate
4,950 = 225n
I don't like the n on the right side so I am going to rewrite the equation
225n = 4,950
divide by 225
n = 4,950/225
evaluate
n = 22
So this result means that the company would transport 22 tones of sugar.
Have a great day!
Step-by-step explanation:
I need help ASAP Right answers only!!
Tank B is filled at a constant rate of 1
Graph 1
liters per minute.
The relationship between its volume of water and time
1
can be described by the equation v= 24
. where t is
the time in minutes and v is the total volume in liters of
water in the tank.
v
1.8
1.6
1.4
1.2
volume (liters)
a) Sketch and label a graph of the relationship between
the volume of water v and time t for Tank B on each of
the axes.
0.8
0.6
0.4
0.2
0.2
0.4
0.6
1.4
1.6
1.8
0.8 1 1.2
time (minutes)
9514 1404 393
Answer:
see attached
Step-by-step explanation:
The graph has a line with a slope of 1/2 beginning at the origin and extending as far as you like into the first quadrant.
is 5.6213 rational or irrational
Answer:
rational number
Step-by-step explanation:
5.6213 is the rational number
Pleaseee hurry and answer
let f be a differentiable function suchf(1)=pi that and f'x=root x^3=6. what is the value of f(5)?
The correct option is (A) 55.8093 (approximately). i.e The value of f(5) = 55.8093
Given that a differentiable function f(1) = π, and f'x = √(x³) = 6.
To find the value of f(5).
As we know, If f(x) is differentiable at x = a, then f(x) is continuous at x = a.
And, f'(x) = (dy/dx) is the derivative of f(x) at x = a.
Then we have to integrate f'(x) to get f(x).
So we have,f'(x) = √(x³) ------(1)
Integrating both sides with respect to x, we get,
f(x) = ∫ f'(x) dx
= ∫√(x³) dx
= ∫ x⁽³/²⁾ dx
=(2/5) x⁽⁵/²⁾ + C, where C is a constant of integration.
Using the given condition f(1) = π, we get,
π = f(1) = (2/5) * 1^(5/2) + C or
C = π - (2/5).
Therefore, f(x) = (2/5) x⁽⁵/²⁾ + π - (2/5) = (2/5) (x⁽⁵/²⁾ - 1) + π.
Now putting the value of x = 5, we get,
f(5) = (2/5) (5⁽⁵/²⁾) - 1) + π= 55.8093 (approximately).
Hence, the value of f(5) is 55.8093 (approximately).
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please help thxsssssssssssssssssssssssssssss
Answer:
x≤3.5Step-by-step explanation:
=>7-2x≤0=>-2x+7≤0=>-2x≤-7 divide 2 by 2 and by 7=>x≤3.51) 5x + 12 = -33
whats the answer to this ?? please help
Answer:
\(x=-9\)
Step-by-step explanation:
\(5x+12=-33\)
Subtract 12 from both sides. The left side cancels:
\((5x+12)-12=(-33)-12\\5x=-45\)
Divide both sides by 5. The left side cancels:
\((5x)/5=(-45)/5\\x=-9\)
The value of x is -9.
What equation is solved by the graphed systems of equations? Two linear equations that intersect at the point 7, 25. 3x 4 = 5x − 10 3x − 4 = 5x − 10 3x 4 = 5x 10 3x − 4 = 5x 10.
Answer:
3x + 4 = 5x − 10
Step-by-step explanation: i took the test :)
help me please thank you!!
Answer:
6+1.25t
Step-by-step explanation:
W(in the 1st month)=6+1.25
W(in the 2nd month)=6+1.25+1.25
W(in the 3rd month)=6+1.25+1.25+1.25
W(in the t months)=6+t(1.25)
This is math. Please help due soon.
Answer:
A (0,6) B (6, 1) C (2,2)
Step-by-step explanation:
A (4, 4)
[-4, 2]
Subtract 4 - 4 = 0 and then add 4+2 since both of them are positive. Do it for all of the coordinates
Image Coordinates:
A----->A¹(0,6)
B----->B¹(2,3)
C----->C¹(-2,4)
HELP
To make an international telephone call you need the code for the country you are calling. The codes for country A, country B, and C are three consecutive integers
whose sum is 84. Find the code for each country.
Answer:
27, 28, 29
Step-by-step explanation:
If you divide 84 by 3, the quotient will be in the middle of the three integers. We get 28 from dividing 84 by 3, therefore our string of numbers are 27, 28, and 29.
A church group ordered a total of 22
drinks and burgers. Each drink cost
$2.50, and each burger cost $6.25. If the
group spent a total of $92.50, how many
burgers did the group purchase?
Please help
Answer:
14.8 or round up to 15 burgers
Step-by-step explanation:
18x-153=80
solve for x
Answer:
x=12.9444444
Step-by-step explanation:
Answer:
x=12.94
Step-by-step explanation:
A significance test about a proportion is conducted using a significance level of 0.05. The sample statistic is 0.12. The p-value is 0.03.
a) If H0 were true, for what probability of a Type I error was the test designed?
b) What conclusion (reject or fail to reject) would you make for this test?
c) If this test resulted in a decision error, what type of error was it?
In a: Type 1 error = 0.05, In b: A small p-value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, so you reject the null hypothesis. In C: Type 1 error
a) Type 1 error = 0.05
b) When you perform a hypothesis test in statistics, a p-value helps you determine the significance of your results. ... The p-value is a number between 0 and 1 and interpreted in the following way: A small p-value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, so you reject the null hypothesis.
0.03 < 0.05
c) Type I and type II errors. ... In statistical hypothesis testing, a type I error is the rejection of a true null hypothesis (also known as a "false positive" finding), while a type II error is failing to reject a false null hypothesis (also known as a "false negative" finding). so Type 1 error
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Alison has 6 yellow discs, 5 blue discs and 9 red discs which
she places in a bag. When she draws one disc out, what is the
probability that the disc is NOT red?
The probability that the disc drawn out is not red is 11/20 or 0.55.
What do we mean by the Probability of an event?The Probability of an event is the fraction used to determine how likely is an event to occur. The formula used is:
The Probability of an event = Number of favorable outcomes/Total number of outcomes.
How do we solve the given question?We are informed that Alison has 6 yellow discs, 5 blue discs, and 9 red discs. These discs are placed in a bag and one disc is drawn out at random. We are asked what is the probability that the disc is not red.
We know that the total probability of any event = 1.
Suppose the Probability that the disc drawn out is red = x.
∴ The probability that the disc drawn out is not red = 1 - x.
So, we calculate the Probability that the disc drawn out is red,
P(disc drawn is red) = Number of red discs/Total discs = 9/20
∴ The probability that the disc drawn out is not red
= 1 - P(disc drawn is red) = 1 - 9/20 = 11/20
∴ The probability that the disc drawn out is not red is 11/20 or 0.55.
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Question 6(Multiple Choice Worth 2 points)
(Line of Fit MC)
Data was collected on the amount of time that a random sample of 8 students spent studying for a test and the grades they earned on the test. A scatter plot and line of fit were created for the data.
scatter plot titled students' data, with points plotted at 1 comma 75, 2 comma 70, 2 comma 80, 2 comma 90, 3 comma 80, 3 comma 100, 4 comma 95, and 4 comma 100, and a line of fit drawn passing through the points 0 comma 60 and 2 comma 80
Find the y-intercept of the line of fit and explain its meaning in the context of the data.
5; for each additional hour a student studies, their grade is predicted to increase by 5% on the test
10; for each additional hour a student studies, their grade is predicted to increase by 10% on the test
60; a student who studies for 0 hours is predicted to earn 60% on the test
80; a student who studies for 0 hours is predicted to earn 80% on the test
The y-intercept of the line of fit is 80, which means that a student who studies for 0 hours is predicted to earn 80% on the test.
This means that even if a student does not study at all, they are predicted to earn a grade of 80% on the test based on the relationship between the amount of time spent studying and the grades earned on the test. This y-intercept value is also the predicted grade if the student did not study at all.
However, it is important to note that this prediction is based solely on the linear relationship observed in the given data and may not necessarily hold true for all cases or situations.
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ben's wallet has $20, $20, $10, $5, $5, $1. ben reaches into his wallet without looking and took two bills out. what is the probability that each bill will be worth less than $10
The probability that each bill drawn from Ben's wallet will be worth less than $10 is 2/21.
When Ben reaches into his wallet without looking and takes two bills out, we need to determine the probability that both bills will be worth less than $10.
To calculate this probability, we consider the total number of bills worth less than $10 in Ben's wallet, which is 5. The total number of bills in his wallet is 6, as there are two $20 bills, one $10 bill, and two $5 bills, in addition to the $1 bill.
For the first bill, the probability of selecting a bill worth less than $10 is 5/15, as there are 5 bills worth less than $10 out of the total 15 bills. After selecting the first bill, there are 14 bills left in the wallet.
For the second bill, the probability of selecting a bill worth less than $10 depends on the outcome of the first selection. Since one bill has already been drawn, there are now 4 bills worth less than $10 remaining out of the 14 bills in total.
To calculate the probability of both events occurring, we multiply the probabilities together: (5/15) * (4/14) = 2/21.
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