Step 1: Define increasing function.
A function, f, is said to be increasing if
\(\begin{gathered} f(x_2)\ge f(x_1) \\ \text{where} \\ x_2\text{ and }x_1\text{ are in the domain of }f\text{ such that} \\ x_2\ge x_1 \end{gathered}\)Step 2: Check if the given function is increasing in the domain (-∞,-1).
Let x₁ and x₂ be members of the domain such that x₂ ≥ x₁.
Then, we have
\(x_2+3\ge x_1+3\)Since,
\(f(x)=x+3,\text{for }x<-1\)then,
\(f(x_2)=x_2+3\ge x_1+3=f(x_1)\)Therefore, the function is increasing for all x such that x < -1
What is the length of EF in the right triangle below?
D
26
10
E
F
The measure of side length EF in the right triangle is 24.
What is the measure of side length EF?The Pythagorean theorem states that the "square on the hypotenuse of a right-angled triangle is equal in area to the sum of the squares on the other two sides.
It is expressed as;
c² = a² + b²
From the diagram:
Hypotenuse DE = c = 26
Leg DF = a = 10
Leg EF = b = ?
Plug in the values and solve for b:
c² = a² + b²
26² = 10² + b²
676 = 100 + b²
b² = 676 - 100
b² = 576
b = +√576 ( we take the positive value since we are dealing with dimensions)
b = 24
Therefore, the length EF is 24.
Option C)24 is the correct answer.
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Element X is a radioactive isotope such that its mass decreases by 51% every day. If
an experiment starts out with 150 grams of Element X, write a function to represent
the mass of the sample after t days, where the hourly rate of change can be found
from a constant in the function. Round all coefficients in the function to four decimal
places. Also, determine the percentage rate of change per hour, to the nearest
hundredth of a percent.
The percentage rate of change per hour to the nearest hundredth is 3%.
Function to represent decay is A(t)= 150×(\(.97^{t}\)).
What is percentage?Percentage means out of hundred. If we want to calculate percentage the we have to make the fraction out of hundred.
It means that if same thing is distributed among 100 people how much a single person would get.
Now for the given question:
For radioactive decay the mathematical equation is
A(t) = A(0)\((1-r)^{t}\)
where A(0) is the initial quantity = 150 gm. and r is the rate of decay = 51%
For hourly decay,
A(24)= A(0)(1-0.51) as 1 day has 24 hour and each day substance decay by 51%.
A(24)= A(0)×0.49
but,
A(24)= A(0)\((1-r)^{24}\)
0.49A(0)=A(0)\((1-r)^{24}\) (we do this to calculate r)
.049= \((1-r)^{24}\)
1-r = \(\sqrt[24]{.49}\)
1-r= 0.97
r = 1- 0.97
r= 0.03
r = 3%
Function for hourly decay,
A(t) = 150 ×\((1-r)^{t}\)
A(t) = 150 ×\((1-0.03)^{t}\)
A(t)= 150×(\(.97^{t}\))
Hence, Hourly rate of decay is 3% and the equation for hourly rate o decay is A(t)=150×\(.97^{t}\).
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Using division, what is the quotient (2x3 - 2x - 12) ÷ (x - 2)?
2x² + 4x-6 +
2x² - 4x + 6
1
X 2)
Answer: 2x²+4x+6
Step-by-step explanation:
\(\displaystyle\\\frac{2x^3-2x-12}{x-2} =\\\\\frac{2(x^3-x-6)}{x-2}=\\\\ \frac{2(x^2-8+8-x-6)}{x-2} =\\\\\frac{2(x^3-2^3-x+2)}{x-2} =\\\\\frac{2((x^3-2^3)-(x-2))}{x-2}=\\\\\frac{2((x-2)(x^2+2x+2^2)-(x-2))}{x-2} =\\\\\frac{2(x-2)(x^2+2x+4-1)}{x-2}=\\\\2(x^2+2x+3)=\\\\2x^2+4x+6\)
Evaluate the expression when w=-
=-14, x=-10.7, and y=1.2
w-x+y
Х
?
A
Answer:
- 2.1
Step-by-step explanation:
Given
w - x + y ← substitute given values
= - 14 - (- 10.7) + 1.2
= - 14 + 10.7 + 1.2
= - 2.1
What is the right answer
Answer:
Earth, Sun, Sun, Earth
Step-by-step explanation:
what is the equation of a line that passes through the points (2,5) and (4,3)
The equation of a line that passes through points (2,5) and (4,3) is
y = -x+7.
Finding the equation of a line:
First, we need to find out the slope for the given points.
(X1,Y1) = (2,5)
(X2,Y2) = (4,3)
formula for slope(m) = \(\frac{Y2 - Y1}{X2 - X1}\)
substitute the points in the above formula
\(\frac{3 - 5}{4 - 2}\) = \(\frac{-2}{2}\)
\(\frac{-2}{2}\) = -1
slope for the given points(m) = -1.
m = -1
The equation of a line is y-y1 = m(x-x1), where x and y are variables.
substituting the values in the above equation then :
y-5 = -1(x-2)
y-5 = -x+2
y+x = 2+5
x+y = 7
y = -x+7
Therefore, the equation of the line passing through the points (2,5) and (4,3) is y = -x+7
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Humanity would achieve in life expectancy of 110 years in approximately
Humanity would achieve a life expectancy of 110 years in approximately 60 years.
To calculate the number of years it would take for humanity to achieve a life expectancy of 110 years, we need to determine the number of decades required to reach this goal based on the given rate of increase.
In 2009, the life expectancy was about 80 years. From that point, we need to calculate the difference between the current life expectancy and the target life expectancy of 110 years.
110 years - 80 years = 30 years
Since the rate of increase is 5.3 years every decade, we can divide the difference by the rate to determine the number of decades required:
30 years / 5.3 years per decade ≈ 5.66 decades
Since we can't have a fraction of a decade, we need to round up to the nearest whole number. Therefore, it would take approximately 6 decades for humanity to achieve a life expectancy of 110 years.
To calculate the number of years, we multiply the number of decades by 10:
6 decades * 10 years per decade = 60 years
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Write the line equation passing through (-4,-1) and parallel to y=-1/2x+1
Answer:
\(y=-\dfrac{1}{2}x-3\)
Step-by-step explanation:
\(\boxed{\begin{minipage}{5.8 cm}\underline{Point-slope form of a linear equation}\\\\$y-y_1=m(x-x_1)$\\\\where:\\ \phantom{ww}$\bullet$ $m$ is the slope. \\ \phantom{ww}$\bullet$ $(x_1,y_1)$ is a point on the line.\\\end{minipage}}\)
Given equation:
\(y=-\dfrac{1}{2}x+1\)
Parallel lines have the same slope.
Therefore, the slope of the line parallel to the given equation is:
\(m=-\dfrac{1}{2}\)
Substitute the found slope and given point (-4, -1) into the point-slope formula:
\(\implies y-(-1)=-\dfrac{1}{2}(x-(-4))\)
\(\implies y+1=-\dfrac{1}{2}(x+4)\)
\(\implies y+1=-\dfrac{1}{2}x-2\)
\(\implies y=-\dfrac{1}{2}x-3\)
Therefore, the equation of the line passing through (-4, -1) and parallel to the given equation is:
\(\boxed{y=-\dfrac{1}{2}x-3}\)
A bag contains nine balls labeled 1 through 9. One ball will be randomly picked. What is the probability of picking a multiple of 3?
Answer: 3/9 or 1/3
Step-by-step explanation:
3, 6 and 9 are all multiples of 3 equal or below 9.
Handre runs a paragliding and adventure touring company. For each paragliding trip (p) he takes he makes $55 and for each adventure tour (a) he makes $75. Last week, he made $2725. Write the equation to represent the relationship between the number of paragliding trips, adventure tours, and his total pay
The equation that shows the relationship between the number of paragliding trips, adventure tours, and his total pay is 55a + 75p = 2725
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let a represent the number of adventure tours and p represent the number of paragliding trip, hence:
55a + 75p = 2725
The equation that shows the relationship between the number of paragliding trips, adventure tours, and his total pay is 55a + 75p = 2725
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Vanessa has 16 songs on a Classic Rock CD. Six of the songs are by the Beatles, 4 are by the Rolling Stones, 4 are by the Who, and 2 are by the Doors. Vanessa plays the CD. She selects a setting that randomly chooses songs to play.
Find the probability of each event:
a) The first 3 songs played are by the Beatles.
b) The first 2 songs played are by the Rolling Stones and the next 2 songs are by the Beatles.
c) The first 2 songs played are by the Doors, and the next song played is either by the Beatles or the Rolling Stones.
Answer:
a)the first 3 songs played are by the beatles
Step-by-step explanation:
i think its a
consider the modified keynesian model with a change in the way that taxes are incorporated:
a) The Keynesian cross graphs an economy's planned expenditure function,
\($\mathrm{E}=\mathrm{C}(\mathrm{Y}-\mathrm{T})+\mathrm{I}+\mathrm{G}$\),
and the equilibrium condition that actual expenditure equals planned expenditure.
How do you find the expenditure function?
To derive the expenditure function we can either (i) invert V(·) and solve for M, or (ii) set up the dual of the consumer's choice problem, solve for Hicksian demand functions and substitute them into the objective (i.e., expenditure) function.
The amount by which\($\mathrm{Y}$\)falls is given by the product of the tax multiplier and the increase in taxes
\(: $\Delta \mathrm{Y}=[-\mathrm{MPC} /(1-\mathrm{MPC})] \Delta \mathrm{T}$.\)
c) We can calculate the effect of an equal increase in government expenditure and taxes by adding the two multiplier effects that we used in parts a and b :
\(\Delta \mathrm{Y}=\left[(1 /(1-\mathrm{MPC}))^* \Delta \mathrm{G}\right]-[(\mathrm{MPC} /(1-\mathrm{MPC}))]^* \Delta \mathrm{T}\)
Because government purchases and taxes increase by the same amount, we know that \(\Delta \mathrm{G}=\Delta \mathrm{T}$. Therefore we can rewrite the equation as:$$\Delta \mathrm{Y}=[(1 /(1-\mathrm{MPC}))-(\mathrm{MPC} /(1-\mathrm{MPC}))]^* \Delta \mathrm{G}=\Delta \mathrm{G}\)
This expression tells us that an equal increase in government purchases and taxes increases \($\mathrm{Y}$\) by the amount that \($\mathrm{G}$\) increases. That is, the balanced-budget multiplier is exactly 1 .
Complete question: Consider the Keynesian model with a change in the way that taxes are incorporated: (1) PAE = C + IP + G + NX Definition of Planned Aggregate Expenditure (2) C = C+ mpc (1-1) .y Consumption Function (3) PAE = Y Short-run Equilibrium Condition In this case, taxes paid are proportional to income, i.e. taxes paid are t - Y, where t is the tax rate and 0<t< 1. Disposable income is the part of income after taxes, i.e., (1-t). Y. Solve for the PAE spending line with PAE as a function of Y. What is the slope?
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A glass of milk is moved from a refrigerator with a temperature of 6C to a room with a temperature of 25C. One minute later the milk has warmed to a temperature of 9C. Determine the temperature of the milk at time t. After how many minutes does the milk have a temperature that is 80% of the ambient temperature?
kshsheveosbwjsvsusvsisvsidvsksns
Step-by-step explanation:
BRAINIST PLSS
Walter had 4/5 yd of string. He used 1/3 of it on a school project. How much string did he use?
The quantity of string he use is 4/15 yd
How to find the amount of string he use?
Fractions are represented as numerical value, which defines a part of a whole. A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing
Given that: He had 4/5 yd of string
Since he uses 1/3 of the string, that means he used 1/3 multiplied by the quantity of the string he has:
1/3 x 4/5 yd = 4/15 yd
Therefore, the amount of string he use is 4/15 yd
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A cash register contains $20 bills and $100 bills with a total value of $1460. If there are 21 bills total, then how many of
The register contains 8 number of $20 bills and 13 number of $100 bills.
What is termed as the linear equation in two variables?A linear equation in two variables is one that is written in the form ax + by + c=0, where a, b, and c are real numbers as well as the coefficients of x and y, i.e. a and b, are not equal to zero.Let 'x' be the of $20 bills.
Let 'y' be of $100 bills.
Total bill = 21
x+y = 21
y = -x+21 ......eq1
Now,
Total price = $1460.
20x + 100y = 1460
Put value of y from eq 1.
20x + 100(-x+21) = 1460
20x-100x+2100=1460
-80x=-640
x=8 (Number of $20 bill)
And,
-8+21=13
y=13 (Number of $100 bills)
Thus, the register contains 8 number of $20 bills and 13 number of $100 bills.
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The complete question is-
A cash register contains $20 bills and $100 bills with a total value of $1460. If there are 21 bills total, then how many of each does the register contain?
9. Based on the tire experiment, will it take more, fewer, or the same rotations for a monster truck with 6ft (72 inches) tires to travel one mile compared to the other 3 tires from before?
A. More
B.Fewer
C. The Same
10. What are the approximate amount of rotations it would take the monster truck to travel one mile?
120
280
560
631
880
1260
The approximate amount of rotations it would take the monster truck to travel one mile is 1260 rotations.
Now, Based on the tire experiment, it will take fewer rotations for a monster truck with 6ft (which is 72 inches) tires to travel one mile compared to the other 3 tires from before.
This is because larger tires have a greater circumference, which means they are able to cover more distance with each rotation.
Hence, For calculate the approximate amount of rotations it would take the monster truck to travel one mile, we need to use the formula:
Number of rotations = Distance traveled / Circumference of the tire
Since the distance traveled is one mile, which is equal to 5280 feet, we need to convert the tire diameter from feet to inches, and then calculate the circumference:
Hence, We get;
Circumference = π x Diameter Circumference
= 3.14 x 72 Circumference
= 226.08 inches
Now, we can calculate the number of rotations:
Number of rotations = 5280 feet / (12 inches/foot x 226.08 inches/rotation)
Number of rotations = 5280 / 2712.96
Number of rotations ≈ 1.947 rotations
or ≈ 1260 rotations per mile
Therefore, the approximate amount of rotations it would take the monster truck to travel one mile is 1260 rotations.
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what is Z x-2, when x=2 and z=2
Answer:
2
Step-by-step explanation:
2x2-2=2
The graph shows the number of meters Jacob runs as a function of time in minutes.
If Sam runs 15 meters less each minute than Jacob does, which equation represents the total meters, m, that Sam runs in t minutes?
m = 200t
m = 185t
m = 215t
m = 15t
Answer:
its m=185t
Step-by-step explanation:
because if you divide
An equation which represent the total meters (m) that Sam runs in t minutes is: B. m = 185t.
How to determine the required equation?Mathematically, a proportional relationship can be represented with the following equation or mathematical expression:
m = kt
Where:
t represents the number of minutes.m represents the number of meters.k represents the constant of proportionality.Next, we would determine the constant of proportionality (k) for each candy as follows:
From Jacob's running, we have the following:
Constant of proportionality (k) = t/m
Constant of proportionality (k) = 400/2
Constant of proportionality (k) = 200
Since Sam runs 15 meters less each minute than Jacob does, an equation that represent the total meters (m) that he runs in t minutes is given by:
m = (200 - 15)t
m = 185t
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Find the values of x and y so that the quadrilateral is a parallelogram.
Triangle ABC was dilated using the rule DO,4. Triangle A'B'C' is the result of the dilation.
Point O is the center of dilation. Triangle A B C is dilated to create triangle A prime B prime C prime. The length of O B is three-fourths.
What is OB'?
1.5 units
3 units
4.5 units
6 units
Mark this and return
Answer:
(b) 3 units
Step-by-step explanation:
You want to know the length of OB' when OB = 3/4 and ∆ABC is dilated about point O by a factor of 4.
DilationThe dilation factor multiplies every length.
If OB is 3/4, then OB' is 4(3/4) = 3.
The length of OB' is 3 units.
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explain 3 factors that should be considered in the construction of index numbers
1. selection of index number: during the construction of index number it is to be kept in mind that the selection of the index number should be correct accordingly.
2. selection of formula: while the construction of index numbers it is compulsory to select the correct formula for the given question.
3. selection of price: selection of prices should be done accordingly while constructing the index numbers.`
construction of index number is also available in two parts:
1. simple
2. weighted
1. simple: the simple method is classified into simple aggregative and simple relative.
2. weighted: the weighted method is classified into a weighted aggregative and weighted average.
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what do i supposed to do with this ?
Answer:
7/6 or 1 1/6
Step-by-step explanation:
2/3 = 4/6
1/2 = 3/6
3/6 + 4/6 = 7/6 = 1 1/6
p= ?
m∠RTS=?
explain how you find the requested values
The angle of the T in the ΔRST is 100° and the value of p is 11.
Define Triangle.
A triangle is a polygon that consists of three sides and three vertices. The fact that the interior angles of a triangle add up to 180 degrees is the most crucial aspect of triangles. This characteristic is known as the angle sum property of a triangle.
i.e., In a give ΔABC, ∠A + ∠B + ∠C = 180°.
Given:
∠R = 37°; ∠S = 43°; ∠T = 10p-10°
Let's take ∠T = x
In ΔRST,
∠R + ∠S + ∠T = 180°
37 + 43 + x = 180°
x = 180 - 80 ⇒ 100
∴ ∠T = 100°
To find the value of p,
∠T = 100
10p - 10 = 100
10p = 110 ⇒ 11
∴ p = 11
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DON'T SOLVE IT
I know the answer. I just need to know the TOPIC in geometry.
What is the topic???
Answer:
Triangles in Geometry
Step-by-step explanation:
Consider a simple economy where the basket of goods used to calculate the CPI contains two items: shampoo and soap. The basket consists of 1 bottle of shampoo and 2 bars of soap. The prices are shown in the table.
Year Price of a Bottle of Shampoo Price of a Bar of Soap
Year 1 $6.50 $1.25
Year 2 $6.60 $1.30
Type the correct answer in the box. Round your answers to two decimal places, if necessary.
The CPI for year 2 is
.
In this simple economy where the market basket for CPI contains two items, the CPI for year 2 is 102.22%.
What is the CPI?The CPI means the Consumer Price Index.
The CPI economically indicates the inflationary trend, using a basket of selected consumer goods and services, and computes their total costs for each period.
The base year's total costs set to 100% are used to compare with the current year's.
Price 1 Bottle of 1 Bar of 2 Bars Total Cost
Shampoo Soap of Soap Mkt Basket
(a) (b) (c) (a) + (c)
Year 1 $6.50 $1.25 $2.50 $9.00
Year 2 $6.60 $1.30 $2.60 $9.20
CPI for Year 1 (base year) = 100% ($9/$9 x 100)
CPI for Year 2 = 102.22% ($9.20/$9 x 100)
Thus, year 2's Consumer Price Index is 102.22%, compared to year 1's.
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Answer:
102.22
Step-by-step explanation:
Edmentum.
A man, a woman, and their four children randomly stand in a row for a family picture. What is the probability that the parents will be standing next to each other?
Answer:
Required probability = 2 / 11
Step-by-step explanation:
Sample space of 5 person = 11!
One woman one man arrangement = 2!
Arrangement without woman = 10!
Required probability = [2!][10!] / [11!]
Required probability = 2 / 11
The probability that the parents will be standing next to each other is 2/11
Probability is the likelihood or chance that an event will occur.
Probability = Expected outcome/Sample spaceGiven a woman, man and their four children, if their parents will be standing next to each other, that makes it 5 people. The sample space for 5 people is 11!
The parent arrangement is 2!If they are arranged without the woman, the expected event will be 10!Pr(parents standing next to each other) = 2!10!/11!
Pr(parents standing next to each other) = 2*10!/11*10!
Pr(parents standing next to each other) = 2/11
Therefore the probability that the parents will be standing next to each other is 2/11
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Please help???????????????
Answer:
A
Step-by-step explanation:
if you dont feel right dont pick my answer
Is the given number a solution of the equation? Which value of d is a solution to the equation 13 – d = 8? 7 5 4 2
Answer:
d = 5 is a solution to the equation 13 - d = 8
Step-by-step explanation:
We have to solve 13 - d = 8
Now,
13 - d = 8,
We add d on both sides,
13 - d + d = 8 + d
13 = 8 + d
we subtract 8 from both sides,
13 - 8 = 8 - 8 + d
5 = d
d = 5
Hence the answer is 5
Write an equation that represents a parallel line to y=1/2x + 4
Answer:
1/2
Step-by-step explanation:
A baker sells a dozen donuts for $3.99. The cost to make three donuts is $0.45. What is the profit on 5-dozen donuts
If a dozen donuts is sell for $3.99, then 5 dozen is sell for 5*$3.99 = $19.95.
1 dozen means 12 donuts, then 5 dozen is equivalent to 5*12 = 60 donuts.
Given that the cost to make 3 donuts is $0.45, then we can use the next proportion to find the cost of 60 donuts:
\(\frac{3\text{ donuts}}{60\text{ donuts}}=\frac{0.45\text{ \$}}{x\text{ \$}}\)Solving for x,
\(\begin{gathered} 3\cdot x=0.45\cdot60 \\ x=\frac{27}{3} \\ x=9 \end{gathered}\)5 dozen donuts cost $9.00.
Profit is calculated as follows:
Profit = revenue - cost
In this case, the profit on 5-dozen donuts is:
Profit = $19.95 - $9.00
Profit = $10.95