Answers:
RelationDomainRangeFunctionVertical Line TestFunction NotationPractical DomainPractical Range===========================================================
Explanation:
A relation is basically anything where we connect one variable to another. Usually there are math operations involved to have a predictable rule. For example, y = x+5 says "add 5 to the x input to get the y output". But we won't always have a rule like this to connect x and y.The domain is the set of allowed inputs (x values). For example, if we had the function y = 1/x, then we can plug in anything but x = 0. This is to avoid a division by zero error.The range is the set of allowed output y values. You can use a graph to determine the range, or find the domain of the inverse (assuming one exists).This is basically saying each input goes to exactly one output only. If such a thing happens, then the relation is a function.A visual way to test if you have a function is to use the vertical line test. If you can pass a vertical line through more than one point, then it is said to have failed the vertical line test and we don't have a function. Failing the vertical line test shows that a particular x value leads to multiple y outputs.Function notation is when we replace y with something like f(x) so the function name is a bit more descriptive.Let's say we had the function f(x) = 100/x. The x represents the number of people, and f(x) is the average cost per person. Before I mentioned that the domain is anything but 0, to avoid a division by zero error. Realistically, we also would make x the set of positive whole numbers (1,2,3,4,...) since x is the number of people. This is one example where a theoretical domain shrinks down to a more practical one. Since the domain shrinks in problem 7, the range is likely to shrink as well. Use a graph or table to see why this happens.Find the missing number in the ratio table below.
11 22 33 44
9 18 27 ?
A: 38
B: 36
C: 35
D: 37
NO LINKS
Answer:
answer is B
Step-by-step explanation:
33/27 = 44/x
33x = 1188
x = 36
NEED HELP URGENTLY!!!!!
In two or more complete sentences, explain how to use ordered pairs of points in f(x) = 3x - 5 and g(z) = ²5 to
determine iff (z) andg(z) are Inverses of each other.
The functions are inverses if the reverse of every ordered pair on the f(x) list is on the g(x) list.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have:
f(x) = 3x - 5
Here, g(x) is not given clearly.
But we can identify the given function as an inverse of each other.
Let's suppose the ordered pairs are:
[x, f(x)] and [x, g(x)]
The functions are inverses if the reverse of every ordered pair on the f(x) list is on the g(x) list.
f(0) = -5 so for (0, -5) on the f(x) list then (-5,0) must be on the g(x) list
f(1) = -2 so for (1, -2) on the f(x) list then (-2, 1) must be on the g(x) list
f(2) = 1 so for (2, 1) on the f(x) list then (1, 2) must be on the g(x) list
Let's suppose:
g(x) = (x+5)/3
g(-5) = 0
g(-2) = 1
g(1) = 2
So the ordered pair (-5, 0), (-2, 1), and (1, 2) are in the list of g(x).
Thus, the functions are inverses if the reverse of every ordered pair on the f(x) list is on the g(x) list.
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Given x varies inversely as y and x = 6 when y = - 4, find y when x = 8 .
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[tex]\blue\textsf{\textbf{\underline{\underline{Question:-}}}}[/tex]
Given that x varies inversely with y, x=6 when y=-4, find y when x=8.
[tex]\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}[/tex]
If x varies inversely with y, we divide.
So the formula looks as follows:-
[tex]\bold{x=\displaystyle\frac{k}{y} }[/tex]
where k = constant of proportionality
Plug in the values:-
[tex]\bold{6=\displaystyle\frac{k}{-4}}[/tex]
Multiply both sides by -4:-
[tex]\bold{-24=k}[/tex]
Now find y when x=8:-
[tex]\bold{8=\displaystyle\frac{-24}{y}}[/tex]
Multiply both sides by y:-
[tex]\bold{8y=-24}[/tex]
Divide by 8 on both sides:-
[tex]\dashrightarrow\bigstar{\boxed{\boxed{\underline{\bold{y=-3}}}}\dashleftarrow[/tex]
Good luck.
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Inflation is causing prices to rise at a rate of 10% per year. For an item that costs $300 today, what will be in 4 years?
Answer:
I'd say 439.3!
Step-by-step explanation:
I'm so sorry if this is wrong!
Elizabeth started cutting the
grass at 1:05. She finished
cutting the grass at 2:27. How
long did it take Ellzabeth to cut
the grass?
Answer:
1 hour and 22 minutes
Step-by-step explanation:
2:27 finished and started at 1:05
9. Two fair dice are rolled. Find the odds of rolling the following sums.
(a) 2
(b) 6
(c) 9
(d) Between 5 and 8 (exclusive; that is, not including 5 or 8)
(e) Not more than 5
Find the mean, median, mode, and range of the data set after you perform the given operation on each data value.
14, 7, 34, 29, 14, 6; multiply by 6
A. mean: 17.33, median: 14, mode: 14, range: 168
B. mean: 104, median: 84, mode: 84, range: 168
C. mean: 17.33, median: 84, mode: 84, range: 66
D. mean: 104, median: .4, mode: 14, range: 66
Answer:
A
Step-by-step explanation:
Median is the middle
Mode is the number you see the most
Add and divide for the mean
Subtract the lowest value from the highest value for the range
How many different three-digit numbers can be written using digits from the set {3, 4, 5, 6, 7}
without any repeating digits?
Answer:
should be about 60
Step-by-step explanation:
Can someone help me with this question?
Answer: CD segment
Step-by-step explanation:
x2 + y2 – 2y – 99 = 0
What is the center of this circle ?
],
What is the radius of this circle ?
units
Answer:
The center is at (h, k) : (0, -1) and the radius is 10. ... The radius is 10. That is, since r^2 = 100, r must be 10.
Step-by-step explanation:
hope this helps you!
Factor the polynomial completely. 2x^2-9x+7
The polynomial is a quadratic function, and the completely factored expression of 2x^2 - 9x + 7 is (2x -7)(x - 1)
How to factor the polynomial?The polynomial expression is given as:
2x^2 - 9x + 7
Expand
2x^2 - 9x + 7 = 2x^2- 2x - 7x + 7
Factorize the above expansion
2x^2 - 9x + 7 = 2x(x - 1) - 7(x - 1)
Factor out x - 1
2x^2 - 9x + 7 = (2x -7)(x - 1)
Hence, the completely factored expression of 2x^2 - 9x + 7 is (2x -7)(x - 1)
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45.348 to two decimal places
Answer:
45.35
Step-by-step explanation:
Because there are 3 numbers to the right of the decimal point, this number has 3 decimal places. This question wants you to alter the number so that it has only 2 numbers to the right of the decimal. You can't just totally ignore the numbers you want to eliminate, so rounding rules need to be applied.
First, identify the number in the second decimal place position. If the number to the right of this position (the third decimal position) is in the range of 5 - 9, you must add 1 to the second decimal place value. Then, you can drop the numbers after the second decimal place. If the number to the right is 0 - 4, you can simply drop it the value and all the other values to the right.
In this case, the second decimal place has a value of 4. The number to the right is 8. Because 8 is within the 5 - 9 range, add 1 to 4 to get a new decimal value of 5. Finally, drop all the numbers to the right of the new second decimal place value. This leaves you with your answer: 45.35.
Consider the solution to the system of inequalities below
-7x+y≥12.5
v+0.3x2 <-1
Which of the following functions could be added to the system without changing the solution set?
y < –2.1
y > –2.1
y = 2.1
y > 2.1
Answer:
i just want to try this but i think its y<2.1
Step-by-step explanation:
Can someone help me with this
Answer:
95% = Within two standard deviations from the mean
99.7% = Within three standard deviations from the mean
68% = Within one standard deviation from the mean
Step-by-step explanation:
I hope this helped! If it did, please click "Thanks" to help me out!
Hello, help me please))
Answer:
691/8-10/11Step-by-step explanation:
You can rewrite the given log expressions to express them in terms of ln(a), ln(b), and ln(c). Then substituting the given values will produce the value of the expression.
Or, you can define the variables 'a', 'b', and 'c' and let your calculator compute these directly.
__
1.[tex]\ln\left(\dfrac{a^4}{b^4c^{-2}}\right)=4\ln(a)-(4\ln(b)-2\ln(c))=4\cdot2-4\cdot3+2\cdot5=\boxed{6}[/tex]
2.[tex]\ln\left(\sqrt{b^{-2}c^4a^2}\right)=\dfrac{1}{2}\left(-2\ln(b)+4\ln(c)+2\ln(a)\right)=\ln(a)-\ln(b)+2\ln(c)\\\\=2-3+2\cdot5=\boxed{9}[/tex]
3.[tex]\dfrac{\ln(a^1b^2)}{\ln(bc)^2}=\dfrac{\ln(a)+2\ln(b)}{(\ln(b)+\ln(c))^2}=\dfrac{2+2\cdot3}{(3+5)^2}=\dfrac{8}{64}=\boxed{\dfrac{1}{8}}[/tex]
4.[tex]\ln(c^{-2})\left(\ln\dfrac{a}{b^{-3}}\right)^{-1}=\dfrac{-2\ln(c)}{\ln(a)-(-3)\ln(b)}=\dfrac{-2(5)}{2+3\cdot3}=\boxed{-\dfrac{10}{11}}[/tex]
_____
The applicable rules of logarithms are ...
ln(ab) = ln(a) +ln(b)ln(a/b) = ln(a) -ln(b)ln(a^b) = b·ln(a)ln(a) = b ⇔ a = e^bOf course, a square root is the same as a 1/2 power.
How many cubes with side lengths of 1/2 cm does it take to fill the prism.
Answer:
24 cubes
Step-by-step explanation:
You can figure this a couple of ways.
I usually find it easiest to figure in terms of the number of cubes each dimension represents. The vertical dimension (3/2 cm) is the length of 3 cubes; the front-back dimension (2 cm) is the length of 4 cubes, and the width (1 cm) is the length of 2 cubes.
The total number of cubes required is the product of the dimensions in cube-lengths: 3×4×2 = 24 cubes.
In which of the following functions would it be appropriate to use only positive integers for the domain? Select all that apply.
The function c(p) represents the cost for (P) people to attend the movies.
The function m(t) represents the miles driven over t hours.
The function t(m) represents the average high temperature for a given number of months.
The function p(w) represents the profit of a farmer who sells (w) whole watermelons.
The function (n) represents the number of person-hours it takes to assemble (n) engines in a factory.
Answer: The function c(p) represents the cost for (P) people to attend the movies.
The function t(m) represents the average high temperature for a given number of months.
Step-by-step explanation:
Based on the work provided, write the dividend as a product of two factors
Answer:
x4+2x3+x2+5x+b=x-2x3+x+3
Step-by-step explanation:
Easy math pls help quick will give brainlest
Answer:
Problem 9: h(1/8) = 5/8
Problem 10: k = -5
Step-by-step explanation:
Problem 9:
[tex]h( \frac{1}{8} ) = 3( \frac{1}{8} ) + \frac{1}{4} = \frac{3}{8} + \frac{2}{8} = \frac{5}{8} [/tex]
Problem 10:
[tex] \frac{k - 3}{2} = - 4[/tex]
[tex]k - 3 = - 8[/tex]
[tex]k = - 5[/tex]
Solve the system using elimination.
Answer:
This equation has no solution
Step-by-step explanation:
if the same equation equals 2 different numbers then therefore there is no solution.
please help me in this question please
Step-by-step explanation:
here is your answer, this is how you do it
Answer:
[tex]\boxed{\bf G. \: x = {25}^{o}} [/tex]
[tex]\boxed{\bf H. \: x = {20}^{o} }[/tex]
Step-by-step explanation:
In the given figure, the linear pairs are supplementary angles, meaning they should add up to 180°.
G)
[tex]\bf 2x + 34 + x + 71 = 18 {0}^{o} [/tex][tex]\bf 3x + 105 = 18 {0}^{o} [/tex][tex]\bf 3x = 180 - 105[/tex][tex]3x = 75[/tex][tex]\boxed{\bf x = {25}^{o} }[/tex]H)
[tex]\bf 2x + 4x + 3x = {180}^{o} [/tex][tex]\bf 9x = 180[/tex][tex]\boxed{\bf x = {20}^{o} }[/tex]«••••••••••••»«•••••••••••••»
Anyone know what -8x-y=5 ; y=x+4 is using yhe subtraction method? Please explain to! would help greatly
Answer:
The answer would be x = -1 and y = 3
Step-by-step explanation:
Work is as shown:
1) -8x - y = 5
y = x + 4
2) -8x - (x+4) = 5
3) -8x -x = 9
4) -9x/-9 = 9/-9
5) y = -1 + 4 = 3
If there are any questions or if i didn't answer the question reply with the question please.
What is the range of the following numbers: 2, 5, 5, 8, 4, 3
Answer: range is 6
Step-by-step explanation:
Smallest number is 2
largest number is 8
8-2=6
If for a particular one-to-one function f(2) = 13, what are the corresponding input and output
values for the inverse function?
Answer:
[tex]f^{-1}(13) = 2[/tex].
Step-by-step explanation:
For function [tex]f[/tex], the notation [tex]f(2) = 13[/tex] means that when the input to the function is [tex]2[/tex], the output would be [tex]13[/tex].
The inverse function of a one-to-one function [tex]f[/tex] is commonly denoted as [tex]\!f^{-1}[/tex].
The inverse function undoes the action of the original function. In this question, [tex]f[/tex] maps [tex]2[/tex] to [tex]13[/tex]. Thus, [tex]f^{-1}[/tex] would need to map [tex]13\![/tex] back to [tex]2\![/tex]. Therefore, [tex]f^{-1}(13) = 2[/tex] should be the corresponding input and output values.
The height of a light pole in a magazine is 4 inches. The scale of the picture was given as 1 inch:24 inches. What would be the actual height of the light pole?
Answer:
96
Step-by-step explanation:
4 times 24 is 96
2 7.1.2 Exam: Semester 1 Exam
Question 7 of 7
A part-time caregiver made $8944.58 last year. If he claimed himself as an
exemption for $3650 and had a $5700 standard deduction, what was his
taxable income last year?
O A. $5294.88
B. $3244.58
C. $0
O D. $405.42
Answer:$0
Step-by-step explanation:
Which function has the greatest x-intercept?
Et
f(x) = 3x - 9
g(x) = (x + 31)
h(x) = 2x – 16
j(x) = -5(x - 2)2
Answer:
g(x) = (x + 31)
f(x)= 3x-9
3×x-9= -9+3×x
=-6x
g(x)=(x+31)
1×x+31=32+1×x
=32x
h(x)=2x-16
2×x-16= 16+2×x
=18x
j(x)= -5(x-2)2
(-5x+10)2
-10x+20= 10×x+20
=20-10×x
=10x
Find the mean of each distribution.
Correct answers will be mark as BRAINLIEST and get 50 points
Wrong answers will be reported
Answer:
See below ~
Step-by-step explanation:
a)
Mean = 3(21) + 1(22) + 2(23) + 5(24) + 1(25) / 12Mean = 63 + 22 + 46 + 120 + 25 / 12Mean = 276/12Mean = 23b)
Mean = 4.3 + 4.8 + 5.1 + 5.1 + 5.2 + 5.5 + 5.7 + 6.6 + 6.9 + 7.3 + 7.4 / 11Mean = 63.9/11Mean = 5.81Answer:
a) 23 °C
b) 5.81 m² (2 dp)
Step-by-step explanation:
Part (a)This set of data is presented as a Dot Plot.
The frequency (how often a data value occurs) is represented by the number of dots above each data value.
For example, in this dot plot, there are 3 dots above the data value 21 °C and so this means that there are three of this particular data value in the set of data.
To find the mean, we need to multiply each data value by its frequency, add them up, then divide by the total frequency.
[tex]\begin{aligned}\textsf{mean}&=\dfrac{3 \times 21+1 \times 22+2\times 23+5\times 24+1\times 25}{3+1+2+5+1}\\\\ & = \dfrac{63+22+46+120+25}{12}\\\\& = \dfrac{276}{12}\\\\&=23^{\circ} \sf C\end{aligned}[/tex]
Part (b)This set of data is presented as a stem and leaf diagram, where the units and tenths are split. The units column is the 'stem' and the tenths become the 'leaf'.
Therefore, the first row of this stem and leaf diagram represents 2 data values: 4.3 and 4.8
To find the mean, sum the data values, then divide by the total frequency.
To find the total frequency, simply count the number of values in the leaf part of the diagram.
Data values = 4.3, 4.8, 5.1, 5.1, 5.2, 5.5, 5.7, 6.6, 6.9, 7.3, 7.4
Total frequency = 11
[tex]\begin{aligned}\textsf{mean} &=\dfrac{4.3 + 4.8 + 5.1+5.1+5.2+5.5+5.7+6.6+6.9+7.3+7.4}{11}\\ & = \dfrac{63.9}{11}\\\\& = 5.81\:\textsf{(2 dp)}\end{aligned}[/tex]
Gravity is one of the four fundemental forces in the universe. Electromagnetism is another one. The Other two are the strong force and the weak force that happen at the subotamic level. Find some information on what role these two forces play inside each atom and why one is considered strong and the other weak
Answer:
gravity is the force that helps u stay on the earth
Janet is retiring after working for a major department store for 20 years. The company offered her a flat retirement benefit of $50 per year for each year of service. a. What was her monthly income in the fi rst year after retirement?
Answer:
$1000
Explanation:
If the employee has worked there for 20 years and for every year its 50 dollars. That would mean its 50x20 which eqauls 1000.
The monthly income in the first year after retirement is $1000.
What is monthly income?Average monthly income is the amount you earn each month. Depending on your source of income, you can subtract insurance payments, rent allowances and other costs, such as federal and state taxes, from your total income every month. Net worth is your debt subtracted from your total assets.
Given that, Janet is retiring after working for a major department store for 20 years. The company offered her a flat retirement benefit of $50 per year for each year of service.
After working for 20 years, Janet has decided to retire from her job at a major department store.
The company has offered her a flat monthly retirement benefit of $50 for each year of service, which means that her monthly income in the first year after retirement would be $50 multiplied by 20, which is equal to $1000.
Hence, the monthly income in the first year after retirement is $1000.
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