Answer:
Step-by-step explanation:
This in standard form (Ax + By = C.) In order to make this slope-intercept form, you need to isolate y.
y = -1.5x + 2.75
y=mx + b is slope intercept, where m is the slope and b is the y-intercept.
In this case, -1.5 is the slope and 2.75 is the y-intercept.
Hope this helps!!
Statement 5.109. Letf:X→Ybe a function. Then the functionfis a bijection iff the relation{(y,x)∈Y×X∣(x,y)∈f}is a function.
Let f:X→Ybe a function. Then the function f is a bijection if the relation {(y ,x)∈Y×X∣ (x ,y)∈f} is a function.
Assume that X→Y is a bijective function.
i.e. f:X→Y is one-one and onto function.
so different elements in X have different images in Y
and b ∈ Y there exists a ∈ X such that f(a)=b.
R= {(y ,x)∈Y×X∣(x ,y)∈f} is a relation
we wish to prove R is a function.
R is a relation from Y to X
let Y∈Y by assumption f is bijection function from X to Y
for all y ∈ Y there exists X∈ X such that f(x)=y.
so for every element in Y there is mapping element in X.
if (x ,y) ∈ f then (y ,x) ∈ R
therefore R is a function.
let X1, X2, ∈ X then there exists some y1, y2,∈ y such that
take f ( x1 )= y1 and f( x2)=y2
by assumption R is a function from Y to X that is inverse of f is existing means f is bijection.
for bijective functions only inverse exists.
If f:X→Y is a function. Then the function f is a bijection if the relation
{(y ,x)∈Y×X∣(x, y)∈f} is a function.
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does anyone know the answers?
Answer:
1. Supplementary
2. Alternate exterior
Step-by-step explanation:
1. ∠1 and ∠2 are complementary because they both lie on the same straight line. If you had the values of these angles, they would add up to 180°
2. ∠1 and ∠8 are alternate exterior angles because they are on opposite sides of the transversal (the diagonal line from the bottom left to the top right) and they are on the outsides of the parallel lines. (∠1 is above the top horizontal line and ∠8 is below the bottom horizontal line.)
What is GM?
I need the answer pleaseee help me
Answer: 18
Step-by-step explanation:
[tex]\triangle HJK \cong \triangle HLK[/tex] by HL. Therefore, [tex]JK=2[/tex] by CPCTC.
Using the segment addition postulate, [tex]GK=9[/tex].
Furthermore, [tex]\triangle HGK \cong \triangle HMK[/tex] by HL. This means that [tex]MK=9[/tex] by CPCTC.
Using the segment addition postulate again, [tex]GM=9+9=18[/tex].
What is Q(1.5) if ()=cos() f(x)=cos(x) and Q(x) is centered atπ/2? Round your answer to 4 decimals, for example, 0.1234.
Step-by-step explanation:
This is a Taylor series because our center is non-zero.
The goal of Taylor series is to approximate non polynomial functions using Calculus.
So let's be intuitive.
In order to be accurate, we need to match the center value at some center a.
We know that cos(pi/2)=0, so our first constant should be 0.
[tex]q(x) = 0[/tex]
Next, we must be spot on with the linear approximation
at x=pi/2
we know that
[tex] \frac{d}{dx} \cos(x) = - \sin(x) = - \sin( \frac{\pi}{2} ) = - 1[/tex]
We also want to divide this by 1! , which is just one so our constant there is
-1, since we want to use this as an linear approximation and we want to be general, and we have a center to stay in respect to,
our next term is
[tex] 0 - 1(x - \frac{\pi}{2} ) {}^{1} [/tex]
Next, up, we must be similar in concavity.
So we take the second derivative of cosine which is just
[tex] - \cos(x) = - \cos( \frac{\pi}{2} ) = 0[/tex]
Since our constant is 0, we can skip this, even if we divide by 2!
Our fourth term is the third derivative of cosine
which is
[tex] \sin(x) = \sin( \frac{\pi}{2} ) = 1[/tex]
We then divide that by 3!, which becomes
[tex] \frac{1}{6} [/tex]
since we want to use this as an cubic approximation and we want to be general, and we have a center to stay in respect to,
our next term is
[tex] - (x - \frac{\pi}{2} ) {}^{} + \frac{1}{6} (x - \frac{\pi}{2} ) {}^{3} [/tex]
Let do one more term,
we know the 5th term is the fourth derivative of cosine evaluated at x=pi/2, which is just 0 so we can skip it.
The 6th term is the fifth derivative of cosine evaluated at x=pi/2, which is -1, then we divide by 5!, so we get
[tex]q(x) = - (x - \frac{\pi}{2} ) + \frac{1}{6} (x - \frac{\pi}{2} ) {}^{3} - \frac{1}{120} ( x - \frac{\pi}{2} ) {}^{5} [/tex]
Using the approximations, plug in 1.5 for x and we get approximately
0.0707
Julie wanted to match Lisa's obstacle course record of 73.4 seconds. She has already spent twenty and one-fourth seconds on wall climbing and 11.78 seconds on the ropes. How much time did she have left to match the record? 61.62 seconds 53.15 seconds 41.37 seconds 8.47 seconds
The time required to match the record is 41.37 seconds. The correct option is (c).
What are arithmetic operations?The arithmetic operations are the fundamentals of all mathematical operations. The example of these operators are addition, subtraction, multiplication and division.
The given problem can be solved as follows,
The remaining time for matching the record is given by,
73.4 - (20(¹/₄) + 11.78)
= 73.4 - (81/4 + 11.78)
= 73.4 - (20.25 + 11.78)
= 73.4 - 32.03
= 41.37
Hence, the time Julie have left to match the record is 41.37.
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USING YOUR MATH
4. A semi-truck is being loaded with boxes of varying weights. The total weight of boxes loaded is shown below as a function of the number of boxes loaded into the truck.
(a) For each interval below, find the average rate of change. Do not round. Include units with your answers.
5 to 11 boxes:
11 to 20 boxes:
20 to 25 boxes:
(b) Over which interval was the average weight per box the greatest?
5. A hot liquid was placed in a freezer and its temperature was recorded. The data for the first 8 minutes is shown below.
At what average rate is the temperature changing from 2 to 8 minutes? Use proper units.
Average rate of change for interval 5 to 11 boxes is 4.5 , 11 to 20 boxes is 6 and 20 to 25 boxes is 3.2
What is average rate of change?Average rate of change can be defined as slope of function between two fixed values of x. It can also be defined as change in function per unit or we can say as an average.
Average rate of change (from x = a to x=b) = [tex]\frac{f(b)-f(a)}{b-a}[/tex]
Given table can we represented as No.of boxes = x
Total weight = y
So, for x = 5 , y = 18
x = 11 , y = 45
x = 20 , y = 99
x = 25 , y = 115
(a) Average rate of change for Intervals
5 to 11 boxes = [tex]\frac{45 - 18}{11-5}=\frac{27}{6} = \frac{9}{2}[/tex]
= 4.5
11 to 20 boxes = [tex]\frac{99-45}{20-11} = \frac{54}{9}[/tex]
= 6
20 to 25 boxes = [tex]\frac{115-99}{25-20}=\frac{16}{5}[/tex]
= 3.2
(b) for interval of 11 to 20 boxes we have greatest average weight per box.
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A copy machine makes 44 copies per minute. How long does it take to make 165 copies?
Let G(x) = -2(3x + 4)(x - 1)(x – 3)^2 be a polynomial function.
Find the Y intercept and state the end behavior of g(x).
The vertical intercepts is (4/3,0) (3,0) (1,0) and The horizontial intercepts is (0,72)
The end behavior is as x approaches positive infinity, f(x) approaches negative infinity. As x approaches negative infinity, f(x) approaches negative infinity.
What is a function?Function is a type of relation, or rule, that maps one input to specific single output.
Given the G(x) = -2(3x + 4)(x - 1)(x – 3)^2 as a polynomial function.
Since all the exponets will equal 0. The constant will just add to the term.
The leading degree is even. Thus Even Degree Polynomials like Quadratics tend to go approach positive infinity vertically as x approaches positive infinity, and as x approaches negative infinity, it approaches positive infinity vertically.
Our leading coefficient is negative which means our quadratic will get reflected across the x axis.
The end behavior is as x approaches positive infinity, f(x) approaches negative infinity. As x approaches negative infinity, f(x) approaches negative infinity.
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The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 6 mg. Round your answers to 5 decimal places as needed. What was the initial mass (in mg) of the sample? What is the mass 7 weeks after the start?
Rounded to 5 decimal places, the initial mass of the sample was 48.00000 mg, and the mass 7 weeks after the start was 0.00002 mg.
What is the half-life of a substance?
Half-life is the time required for the amount of something to fall to half its initial value. The converse of half-life is doubling time.
The half-life of a substance is the time it takes for half of the initial mass of the substance to decay.
Since the half-life of Palladium-100 is 4 days, after 4 days, the mass of the sample will be reduced to half of its initial value. After 8 days, it will be reduced to a quarter of its initial value, and after 12 days it will be reduced to an eighth of its initial value.
We are given that after 12 days, the mass of the sample is 6 mg. This means that the initial mass of the sample was 8 * 6 mg = 48 mg.
After 7 weeks (7 * 7 = 49 days), the mass of the sample will be reduced by a factor of
= [tex]8^{(49/4) }[/tex]
= [tex]8^{12.5}[/tex] =
approximately [tex]2.6 * 10^6[/tex]. The mass of the sample after 7 weeks will be approximately [tex]\frac{6 mg }{2.6 * 10^6}[/tex] = approximately [tex]2.3 * 10^{-6}[/tex] mg.
Rounded to 5 decimal places, the initial mass of the sample was 48.00000 mg, and the mass 7 weeks after the start was 0.00002 mg.
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a pizza has a diameter of 20 inches.one slice of the pizza is perfectly cut from the centre at a 360° angle.what is the area of sector of the pizza
Answer: The diameter of a pizza is 20 inches.
The admission fee at an amusement park is $1.50 for children and $4 for adults. On a certain day, 396 people entered the park, and the admission fees collected totaled 1,094.00 dollars. How many children and how many adults were admitted?
Therefore by solving the equations we get to know that 196 children and 200 adults were present on that day.
What is equation?
equation, a declaration of equivalence between two expressions with variable- and/or number-filled expressions. In essence, equations are questions, and efforts to discover a method for answering them have fueled the growth of mathematics. Equations range in complexity from straightforward addition-and-multiplication equations in mathematics through differential equations, exponential equations that use exponential expressions, and integral equations.
Let's initially configure our system by giving the letters x and y meanings. Assume x is the number of kids and y is the number of adults.
Children are priced at $1.50, while adults are priced at $4.00. We multiply the total number of children, x, by 1.5 to get how much each child will cost. 1.5x is used to indicate this. We will use 4y for adults, whose entry fee is $4. On the specified day, $1094 in total revenue was earned. This sum requires the addition of 1.5x and 4y.
1.5x + 4y = 1094 works for the money equation involved.
Second equation: The total number of individuals present on the day is 283. X and Y, or the number of children and adults, must be added together to arrive at this figure.
x + y = 396
System of equations:
1.5x + 4y = 1094
x + y = 396
Thus,
x + y = 396
y = 396- x
Substitute y = 396 - x into the first equation.
1.5x + 4 (396 - x) = 1094
1.5x + 1584 - 4x = 1094
1584 - 2.5x = 1094
-2.5x = -490
x = 196
Substitute x =196 back into y = 396 - x
y = 396 - 196 = 200
Therefore by solving the equations we get to know that 196 children and 200 adults were present on that day.
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A bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble. What is the probability that the marble is red or blue?
The probability that the marble is red or blue is 0.6923 or 69.23% if the bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble.
What is probability?It is defined as the ratio of the number of favorable outcomes to the total number of outcomes, in other words the probability is the number that shows the happening of the event.
We have the total number of marbles = 5+4+4 =13
Total number of red and blue marble = 5+4 = 9
The probability that the marble is red or blue = 9/13 = 0.6923 or
= 69.23%
Thus, the probability that the marble is red or blue is 0.6923 or 69.23% if the bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble.
Hope this helps!!! :)
(Special thanks to JaneWright Brainly tutor!!!)
Answer:
66% and 2/3
Step-by-step explanation:
100% divided by 3 is 33% and 1/3
Hope that helps! :)
GIVING BRAINLIEST NOW!!!
Click on the measure of the angle.
A. 34
B. 144
C. 36
D. 146
Answer:
A Hooe that helps. Brainliest
If g(x)=f(x-3), then select all the statements that are true.
The value of g(1) is 3 .
The value of g(-1) is 1 .
The value of g(-1) is 8 .
The y-intercept of g(x) is at the point (0,1).
The true statement is The value of g(1) is 3 .
What is Function?In mathematics, a function is represented as a rule that produces a distinct result for each input x. In mathematics, a function is indicated by a mapping or transformation. Typically, these functions are identified by letters like f, g, and h. The collection of all the values that the function may input while it is defined is known as the domain. The entire set of values that the function's output can produce is referred to as the range. The set of values that could be a function's outputs is known as the co-domain.
Given:
g(x)=f(x-3)
When x= 1
g(1) = f(-2)= 3
and, When x= -1
g(1) = f(-2)= -1
Hence, the true statement is The value of g(1) is 3 .
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Type the 4letter code into the answer box. All CAPS, no spaces.
Answer:
HAEC
Step-by-step explanation:
You want the code letters associated with lines 1–4 on the graph.
Line 1Has a y-intercept of -4, and a rise/run if 1/4. The equation is ...
y = 1/4x -4 (H)
Line 2Has a y-intercept of -4, and a rise/run of 4/1 = 4. The equation is ...
y = 4x -4 (A)
Line 3Has a y-intercept of 3, and a rise/run of -2/1 = -2. The equation is ...
y = -2x +3 (E)
Line 4Has a y-intercept of +1 and a rise/run of 2/1 = 2. The equation is ...
y = 2x +1 (C)
The code is HAEC.
The amount of money he earns is directly proportional to the number of hours he w The graph shows the amount of money, w dollars, he earns in t hours.
Find the constant of proportionality.
Answer: dollars per hour.
How much money does Jonathan earn after working 3 hours?
Answer:
55 I think if I'm wrong sorry
In gym class, a student can do 40 sit-ups in 60 seconds and 100 sit-ups in 150 seconds.
Graph the proportional relationship.
graph with x axis labeled time seconds and y axis labeled sit ups, with a line from 0 comma 0 going through 90 comma 60
graph with x axis labeled time seconds and y axis labeled sit ups, with a line from 0 comma 0 going through 60 comma 30
graph with x axis labeled time seconds and y axis labeled sit ups, with a line from 0 comma 0 going through 60 comma 50
graph with x axis labeled time seconds and y axis labeled sit ups, with a line from 0 comma 0 going through 90 comma 30
PLEASE HELP, its not D btw i did the test and got it wrong
D, graph with a line from 0 comma 0 to 90 comma 30 and an x axis labeled time seconds and a y axis labeled sit ups represents the proportional relationship.
How do graphs work?For the graphical representation of data points on both the horizontal and vertical lines of a cartesian coordinate, which are the x-coordinate (x-axis) and y-coordinate, a graph is a sort of chart that is frequently employed (y-axis).A straight line with data points passing through the origin characterizes the graph of any proportional relationship in mathematics (0, 0).In this situation, it is logically inferable that the values on the x- and y-coordinates of the provided graph are proportional and are represented by the following linear equation:Explanation:
y = 3x
where x is the passage of time.
y stands for how many sit-ups there were.
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(TONS OF POINTS AND BRAINLYEST)
Please answer the question that is stated in the image below. Thank you. It really means a lot to me.
Answer:
Below
Step-by-step explanation:
a) they won 120 games out of 369 played = 40/23=.325
b) they lost 248 out of 369 played = 248/369 = .672
c) Home games are 185 out of 369 = .501
d ) at home they won 72 out of (72+112+1) = 72/ 185 = .389
Angela has 21 3/8 cups of flour. She uses 2 1/4 cups of flour to make each batch of cookies. Part A. How many batches of cookies can Angela make? Part B. Write an equation to model the solution to the problem.
Using proportions, Angela can make 9.5 batch of cookies and the equation to model the solution is y = 2.25x
What are ProportionsProportion is an equation that defines that the two given ratios are equivalent to each other. However, in this case, we can write out an equation that shows the number of cookies she can make with the number of cups of flour available.
To do this, we need to set up a proportional equation with a constant of proportionality.
This is often written as
y = kx
k = constant of proportionalityFor each batch, she needs 2 1/4 cups
Let's convert this into decimal which will give us 2.25 cups of flour.
y = 2.25x
A. The number of batch she can make will be
21 3/8 ÷ 2 1/4 = 9.5 batch
B) The equation to model the solution is y = 2.25x
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Find sin2x,cos2x, and tan2x if sin x=12/13 and x terminates in quadrant II.
sin2x=
cos2x=
tan2x=
Trigonometry is the branch of mathematics that deals with particular angles' functions and how to use those functions in calculations. There are six popular trigonometric functions for an angle. Sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant are their respective names and acronyms (csc).
Given:
sin x= 12/ 13
So, B = √13² - 12² = √169 - 144 = √25 = 5
cos x= -5/ 13
So, sin 2x= 2 sin x cos x =2 (12/13)(-5/13) = -120/169
and, cos 2x= 1- 2 sin²x
= 1- 2( 144 / 169)
= -119/ 169
and, tan 2x = sin 2x/ cos 2x = 120/ 169 / (- 119/ 169)= 120/ 119
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If the function g (« = f(a) + k, where k = 2, describe the changes to the slope and y-intercept of this transformation.
The changes to the slope and y-intercept of this transformation are
The slopes of the functions are the sameThe y-intercept of g(a) is 2 greater than the y-intercept of f(a)How to determine the changes to the slope and y-interceptFrom the question, we have the following parameters that can be used in our computation:
g(a) = f(a) + k
Also, from the question, we have
k = 2
Using the above as a guide, we have the following:
Substitute the known values in the above equation, so, we have the following representation
g(a) = f(a) + 2
This means that
Slope of f(a) = Slope of g(a)
Also, we have
y-intercept of g(a) = y-intercept of f(a) + 2
Hence, the y-intercept of g(a) is 2 greater than the y-intercept of f(a)
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What is the range of possible values for x ?
The diagram is not to scale
The range of possible values for x is 0<x<20
What is Range?The Range is the difference between the lowest and highest values.
In any triangle, the smallest angle is opposite to the smallest side.
So, In ΔABD , the side which faces ∠ABD is AD whose length is 32 units.....(1)
And, in ΔCBD, the side which faces ∠CBD is CD whose length is 20 units....(2)
Now, from equations (1) and (2) We get,
∠ABD < ∠CBD
So, ∠ABD lies between 0° to 48°
0<4x+8<48
Subtract 8 on both sides
-8<4x<40
Divide by 4
-2<x<10
As ∠ABD lies between 0° to 48°, so 0<x<10 is the range.
Hence, 0<x<10 is the range of possible values for x.
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Find the volume of the shaded solid. Round your answer to 2 decimal places if necessary. Use 3.14 when necessary.
Answer:
Volume of a cuboid = length x width x height
8 x 8 x 32 = 2048
Volume of a cylinder = πr^2h
r = diameter/2 = 8/2 = 4
π(4)^2(32) = π(16)(32) = 1607.68
Volume of the shaded solid:
2048 - 1607.68 = 440.32
The correct answer would be C) 440.32 m^3
opinion 1: coefficient of x, coefficient of y, constant term
opinion 2: divide -105 by 3, divide 165 by 3, write the equation in slope-intercept form
opinion 3: -55, -35, 35, 55
Answer:
Coefficient of x
Write in the slope intercept form
35
Step-by-step explanation:
165 - 105x + 3y = 0 Subtract 165 from both sides and and 105x to both sides
3y = 105x - 165 Divide all the way through by 3
y = 35x - 55
The slope is the coefficient of x when the equation is written in the slope intercept form of the line.
The slope is 35
The width of the rectangle is 60% of its length of 40 ft. What is the area of the rectangle?
Answer:
24
Step-by-step explanation:
60% of 40 is 24 because to find a percentage, multiply the percent you are trying to find (60%) by the number you are trying to find percent of (40) and divide the answer of 60x40 by 100. 60x40 is 2,400. 2,400 divided by 100 is 24. The width of the rectangle is 24ft
Work out the size of an exterior angle of a regular polygon with 8 sides.
The ratio of men to women working for a company is 5 to 6. If there are 308 employees total, how many women work for the company?
Answer:
Step-by-step explanation:
115 woman
John started his collection with 35 baseball cards and collects 4 new cards every week. Frank started the same collection with 50 baseball cards and collects 2 new cards every week. How long will it take John to collect more cards than Frank.
Answer: 8 weeks
Step-by-step explanation: It would take John 8 weeks to collect more basketball cards than Frank with 67 cards for John and 66 for Frank.
Sum and Product of Rational and Irrational Numbers
Step-by-step explanation:
4_/12=4_/3*4=4*2_/3=8_/3
5_/3+8_/3=13_/3
The result is irrational number because it cannot be written as the ratio of two integers. and its decimal extention is neither terminating nor repeting.
Characteristics in common with 2 miles 72,000 inches and 3,000 feet
Answer:
Step-by-step explanation:
1 foot=12inch
3000 feet=12 ×3000=36000 inches
72,000 inches=2 miles
36000 inches=(2÷72,000)×36,000=1 mile