Answers
Step-by-step explanation:
it is just a matter of definition that can be easily looked up.
the domain is the interval or set of all valid x values.
while the range is the interval or set of all valid y (function result) values.
so, the domain here is every value of x used in this function.
e.g. does x = -6 have a functional (y) value in the curve ?
no, it does not.
x = - 4 ? no.
x = -2 ? no.
x = -1 ? ah, yes, this is just the left-most point of the curve.
and then all x values further to the right of -1 are covered. as the arrows indicate : into all eternity ("to infinity and beyond !")
so, the domain is [-1, +infinity).
and you need to use B.
please note, the round bracket indicates that that ends of the interval is not included or undefined (after all, infinity is not a number we can work with, it is basically undefined and only represents a principle).
for the range this is tricky, as the graph does not really show us the limit. it could be y = -1 or 0 down to y = -9 or -10.
Related Questions
Question
Solve: 9(x - 1) - 13x = -3(x + 5).
Provide your answer below:
X =
Answers
Answer:
x=6
Step-by-step explanation:
[tex]9(x - 1) - 13x = - 3(x + 5)[/tex]
[tex]9x - 9 - 13x = - 3x - 15[/tex]
[tex]9x - 13x + 3x = - 15 + 9[/tex]
[tex] - x = - 6[/tex]
[tex] \frac{ - \times }{ -1 } = \frac{ - 6}{ - 1} [/tex]
[tex]x = 6[/tex]
Hello! May I please have some help with this?
Answers
Answer:
12
Step-by-step explanation:
Sets B and G are defined as follows. B=(-2, 2, 3, 5) G=(-1,0,2,4,7) - Answer each part below. Write your answer in roster form or as (a) Find the intersection of B and G. B n G=0 (b) Find the union of Band G. BU G=0 X
Answers
Answer
B n G = {2}
B u G = {-2, -1 , 0 , 2, 3, 4, 5, 7)
Step-by-step explanation:
Given the following two sets
B = { -2, 2, 3, 5}
G = { -1, 0, 2, 4, 7}
Part A
Find the intersection of B and G
The intersection of two sets is defined as the set of all the elements in set A that is also present in set G
Hence, the set of elements that is present in set B and set G is 2
Mathematically, B n G = {2}
Part B
Find the union of set B and set G
The union of two sets is a set containing all elements that are in both sets B and G
B u G = {-2, -1 , 0 , 2, 3, 4, 5, 7)
The perimeter of the rectangle below is 104 units. Find the length of side AD.
Write your answer without variables.
D
52-2
4z
C
B
AD =
0
HELP PLEASE!
Answers
Answer: 28
Step-by-step explanation:
Using the formula for the perimeter of a rectangle,
[tex]2(5z-2+4z)=104\\\\9z-2=52\\\\9z=54\\\\z=6\\\\\therefore AD=5(6)-2-28[/tex]
The table shows the distance a small
motor scooter can travel using one gallon
of gasoline. Complete the table to find the
number of miles the scooter can travel for
other amounts of gasoline.
Answers
Answer:
0.1 gallons = 11.8 miles
10 gallons - 1,180 miles
Step-by-step explanation:
The sum of three numbers is 80. The first number is 8 more than the second. The third number is 2 times the second. What are the numbers?First number:Х?Second number:0Third number:
Answers
Let's use the variables x, y and z to represent each of the three numbers.
If the sum of the three numbers is equal to 80, we have our first equation:
[tex]x+y+z=80[/tex]The first number is 8 more than the second, so:
[tex]x=y+8[/tex]The third number is 2 times the second, so:
[tex]z=2y[/tex]Using these values of z and x in the first equation, let's solve it for y:
[tex]\begin{gathered} (y+8)+y+(2y)=80 \\ 4y+8=80 \\ 4y=72 \\ y=18 \end{gathered}[/tex]Now, calculating x and z, we have:
[tex]\begin{gathered} x=18+8=26 \\ z=2\cdot18=36 \end{gathered}[/tex]Therefore the first number is 26, the second number is 18 and the third number is 36.
The calculation for x=0x=0 corresponds to the
point where the graph crosses the______-axis.
This is the point (______)
Answers
The calculation for x=0 corresponds to the point where the graph crosses the y-axis . This is the point (0,y) .
In the question ,
it is given that x=0 ,
When x=0 in a point (x,y) means , that point lies on the y -axis , and it is called as the y intercept .
Y intercept is defined as the point where the graph of a line crosses the y-axis .
the point on the y-axis will be (0,y) ,
So , the graph will cross the y-axis when x=0 , and that point will be (0,y).
and the value of y will be called as the y intercept of the graph .
Therefore , the calculation for y=0 corresponds to the point where the graph crosses the y-axis . This is the point (0,y) .
The given question is incomplete , the complete question is
The calculation for x=0 corresponds to the point where the graph crosses the________-axis. This is the point (______) .
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Salma has a points card for a movie theater.
• She receives 30 rewards points just for signing up.
• She earns 8.5 points for each visit to the movie theater.
• She needs 115 points for a free movie ticket.
Which equation or tape diagram could be used to represent the
context if a represents the number of visits Salma must make to earn
a free movie ticket?
Answers
using linear equation, Salma needs 10 number of visit to movie theater to get free movie ticket.
What is Linear equation?
A linear equation is one in which the variable's highest power is consistently 1. A one-degree equation is another name for it. A linear equation with one variable has the formula Ax + B = 0, which is its standard form. x is a variable, A is a coefficient, and B is constant in this situation. A linear equation with two variables has the formula Ax + By = C as its standard form. Here, the variables are x and y, the coefficients are A and B, and the constant is C.
linear equation is given by y= mx + c
Salma has 30 rewards points just for signing up and 8.5 points for each visit. the equation became 30+8.5v=115
30+8.5v=115
8.5v=115-30
8.5v=85
v=10
therefore, she needs 10 number of visits to movie theater.
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Let f(x)=−3x−1 and g(x)=x2− 1. Find (f◦g)(−1).
Answers
The value of composite function (f о g) (-1) will be -1.
What is Composite function?
A composite function is a function that is written inside with another function and composition of functions is done by substituting one function into another function.
Given that;
The value of functions are;
f (x) = - 3x -1
And, g (x) = x² - 1
Now, All values of functions are;
f (x) = - 3x -1
And, g (x) = x² - 1
Composition of functions is calculated as;
Since, (f о g) (x) = f (g(x))
Substitute the value of function f(x) and g(x) in above equation;
(f о g) (x) = f (g(x))
= f (x² - 1)
= - 3(x² - 1) - 1
= -3x² + 3 - 1
= -3x² + 2
Put x = -1 in above equation we get;
(f о g) (-1) = - 3 (-1)² + 2
= - 3 + 2
= -1
So, (f о g) (-1) = -1
Thus, The value of composite function (f о g) (-1) will be -1.
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Grant orders a $55 bouquet of flowers to be delivered to his sister. He pays the bill plus a 6.5% sales tax and a 15% tip on the total cost including tax. He also pays a $10 delivery fee that is charged after the tax and tip. How much change does he receive to the nearest cent, if he pays the delivery driver with a $100 bill?
Answers
The change that Grant received to the nearest cent after giving the delivery driver with a $100 bill is $ 32.6.
This is a question of percentages.
Given that:-
Price of bouquet of flowers = $ 55
Sales tax % = 6.5 %
Tip % = 15 %
Delivery fee= $10
We have to find the change that Grant received to the nearest cent after giving the delivery driver with a $100 bill.
Sales tax = (6.5/100)*55 = $3.575
$55 + $3.575 = $58.575
Tip = (15/100)*58.575 = $ 8.78625
Total money paid by Grant = 55 + 3.575 + 8.78625 = $ 67.36125 ≈ $ 67.4
Hence,
Change received by Grant = 100 - 67.4 = $ 32.6
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Hello! I need some help with this homework question posted below. Q17
Answers
To solve an inequality, we need to isolate the value of x, and to do so we will perform a series of calculations in such a way that it remains the inequality unchanged, or at least still true.
To do so, we will perform first a sum of 2x to both sides of it, as follows:
[tex]\begin{gathered} 7-2x+2x\ge3+2x \\ 7\ge3+2x \end{gathered}[/tex]Now, we subtract 3 from both sides:
[tex]\begin{gathered} 7-3\ge3+2x-3 \\ 4\ge2x \end{gathered}[/tex]To finish it, we divide both sides by 2:
[tex]\begin{gathered} \frac{4}{2}\ge\frac{2x}{2} \\ \\ 2\ge x \end{gathered}[/tex]In another way, we can express the following:
[tex]\mleft\lbrace x|x\le2\mright\rbrace or(-\infty,2\rbrack[/tex]It means that the solution is option B.
To solve the second part, we need a filled line that comes from the negative infinity and goes until 2, but it must be including the number 2, and for this reason, the correct answer in the second part is:
D.
Select the postulate that specifies the minimum number of points in space.
Postulate 1: A line contains at least two points.
Postulate 1a: A plane contains at least three points not all on one line.
Postulate 1b: Space contains at least four points not all on one plane.
Postulate 2: Through any two different points, exactly one line exists.
•
Postulate 3: Through any three points that are not one line, exactly one plane exists.
Postulate 4: If two points a lie in a plane, the line containing them lies in that plane.
Postulate 5: If two planes intersect, then their intersection is a line.
Answers
The postulate specifies the minimum number of points in space is, Postulate 1b: Space contains at least four points not all on one plane.
A postulate is an assumption or a claim that is made without providing any supporting evidence. The fundamental claims that are used to support other claims known as theorems are known as postulates. Once a theorem is established, it can be applied to the establishment of other theorems.
By examining each postulate, we may effectively respond to this query.
Postulate 1a: establishes that if G and H are distinct points on plane R, then R contains a third point rather than GH.
Postulate (1b): establishes the bare minimum within a space.
Postulate 1: This describes a line segment with two points, say A and B.
Postulate 2: It asserts that two points determine a line.
Postulate 3: This one explains why, for example, if one leg is shorter than the other three, a table with four legs would wobble, but a table with three legs would not wobble.
Postulate 4: When points A and B are in Q, it is confirmed that AB is in plane Q.
Postulate 5: It concerns two planes.
According to the data presented above, the appropriate response to our query is:
Postulate 1b: Space contains at least four points not all on one plane.
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The product of seven and a number, increased by three, is equal to twice the number, subtracted from 39. Find the number
Answers
It is given that the product of 7 and a number, increased by 3, is equal to twice the number, subtracted from 39.
It is required to find the number.
To do this, write the statement as an algebraic statement.
Let the number be x.
The product of 7 and a number is:
[tex]7x[/tex]The product of 7 and a number increased by 3 is:
[tex]7x+3[/tex]Twice the number is:
[tex]2x[/tex]Twice the number subtracted from 39 is:
[tex]39-2x[/tex]Since it is given that these expressions are equal, it follows that:
[tex]7x+3=39-2x[/tex]Solve the resulting equation for x:
[tex]\begin{gathered} \text{ Collect like terms:} \\ \Rightarrow7x+2x=39-3 \\ \Rightarrow9x=36 \\ \text{ Divide both sides by }9: \\ \Rightarrow\frac{9x}{9}=\frac{36}{9} \\ \Rightarrow x=4 \end{gathered}[/tex]The number is 4.
What is the translation of y=x^2 shifted left 3 units
Answers
Original equation: y = x²
Tranformation rule:
horizontal translation c units leftt = f(x + c); so:
Modified equation: y = (x + 3)²
Three sides of a quadrilateral are the same length, q. The length of the fourth side is 7 inches. The perimeter of the quadrilateral is 40 inches. Write an equation that represents the situation.
Answers
The equation that represent the situation of the quadrilateral is 40 = 3q + 7
How to write equation to represent the side of a quadrilateral?A quadrilateral is a polygon with 4 sides.
Three sides of a quadrilateral are the same length, q.
The length of the fourth side is 7 inches.
The perimeter of the quadrilateral is 40 inches.
The equation to represent the situation is as follows:
perimeter of a figure is the sum of the whole sides.
Hence,
perimeter of the quadrilateral = q + q + q + 7
perimeter of the quadrilateral = 3q + 7
Therefore,
40 = 3q + 7
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Answer:
3q + 7 = 40
Step-by-step explanation:
I got this lesson
PLEASE HELP ASAP 50 POINTS, I will mark brainlyest i would appreciate if shown how to do it with steps
If m∠SPR = 61 and m∠SPQ = 121, what is m∠QPR?
Answers
Answer:
121 - 61 = 60 degrees
Step-by-step explanation:
Answer:
∠QPR=60
Step-by-step explanation:
∠SPQ-∠SPR=∠QPR
121-61=∠QPR
60=∠QPR
please help 4. What is the loan payment on a fixed-rate/fixed-term mortgage loan of $100,000 at 8% for 30 years? (LO 7-3).
Answers
the loan payment on a fixed term mortgage loan of $100,000 at 8% for 30 years will be $ 340,000.
Principal amount = $ 100,000
Interest rate = 8 %
Time period = 30 years.
Now, the interest is simple interest as it is a fixed rate/ fixed term mortgage.
So, the interest will be:
Simple interest = p r t / 100
SI = 100,000 × 8 × 30 / 100
SI = $ 240,000
Amount will be:
A = $100,000 + $ 240,000
A = $ 340,000
Therefore, we get that, the loan payment on a fixed term mortgage loan of $100,000 at 8% for 30 years will be $ 340,000.
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On January 1, a company purchased new furniture ata cost of $26,000. The furniture is estimated to have a useful life of 5 years and a salvage value of $3200
Answers
If on January 1, a company purchased new furniture at a cost of $26,000. The furniture is estimated to have a useful life of 5 years and a salvage value of $3200. The book value of the furniture on December 31 of the first year is: $21,440.
Book valueGiven data:
Cost = $26,000
Useful life = 5 years
Salvage value = $3,200
First step is to calculate the depreciation expenses:
Particular Amount
Cost $26,000
Less: Salvage value ($3,200)
Net cost (a) $22,800
Useful life (b) 5
Depreciation expenses (a/b) $4,560
($22,800 / 5 years)
Second step is to compute the book value of furniture on 31 Dec of first year:
To determine the book value we would have to deduct the depreciation expenses from the cost.
Particular Amount
Cost of an furniture $26,000
Less: Depreciation ($4,560)
Book value $21,440
Therefore we can conclude that the book value is the amount of $21,440.
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The complete question is:
On January 1, a company purchased new furniture ata cost of $26,000. The furniture is estimated to have a useful life of 5 years and a salvage value of $3200The company uses the straight-line method of depreciation. What is the book value of the furniture on December 31 of the first year?
A DVD is discounted by 15% and then from the already discounted price, a further 20% discount is given. If the price now is $300, find the original price?
Answers
The original price is $414.
What is discount?The difference between the purchase price and the item's par value is the discount. Discounts are different types of price reductions or deductions from a product's cost. It is frequently employed in consumer transactions when consumers receive discounts on a range of goods. The % discount rate is provided. a fair deduction from a debt account, typically done in exchange for cash or quick payment.
Given Data
A DVD is discounted by 15% and then from the already discounted price, a further 20% discount is given.
The price now is $300
x = 300 + 15% + 20%
x = 300 + [tex]\frac{15}{100}[/tex] + [tex]\frac{20}{100}[/tex]
x = 414
The original price is $414.
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Please help I’ll mark you as brainliest if correct!!
Answers
Answer:
A) 384, 216
b) 14575
Step-by-step explanation:
A) to find the missing values you do 3-1 which gives you 2.
here is a trick!
then you take your answer (in this case it is 216) and add it to your second row (168) to get the first row's answer (384). so you are basically going backward.
B) here you do the same thing go backward!
5967+8608 = 14575
then if you want you can double-check by subtracting them.
I hope this helps!
Which is the best description of the graph of the derivative of a parabola that opens downward?
Answers
let's take a looksie hmmmm a parabola opening downwards in vertex form using constants of "h" and "k" will be like
[tex]y = -(x+h)^2 +k\implies y = -x^2-2hx-h^2+k \\\\\\ \cfrac{dy}{dx}=-2x-2h\qquad \impliedby \textit{straight line with a negative slope}[/tex]
Write the following comparison as a ratio reduced to lowest terms.
114 hours to 13 days
Answers
The ratio of 114 hours to 13 days is 19:52.
How to calculate the ratio?It should be noted that ratio is simply used to show the comparison between two things that are illustrated.
In this case, we want to calculate the ratio of 114 hours to 13 days. It should be noted that 24 hours make one day. Therefore, 13 days will be:
= 13 × 24 = 312 hours.
The ratio of 114 hours to 13 days will be:
= 114 / 312
= 19 / 52
The ratio is 19:52.
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simplify the expression (-6)^-4 using positive exponents
Answers
there u gooooooooooooooooooooooooooooooooo
If x2=16, find x3?
If x3=125, find x2
Answers
Answer:balls
Step-by-step explanation:your mom
Find the indicated z score. The graph depicts the standard normal distribution with
mean 0 and standard deviation 1.
The indicated z score is
(Round to two decimal places as needed.)
Z 0
0.8289
Answers
Using the normal distribution, it is found that the indicated z-score is Z = 1.08. A normal distribution with a mean of zero and a standard deviation of one is known as the standard normal distribution.
What is meant by standard normal distribution?A normal distribution with a mean of zero and a standard deviation of one is known as the standard normal distribution. The standard normal distribution is centered at zero, and the standard deviation indicates how much a specific measurement deviates from the mean.
While a high standard deviation suggests that the values are dispersed throughout a wider range, a low standard deviation suggests that the values tend to be close to the established mean.
The z-score of a measure X in a normal distribution with mean and standard deviation is given by:
z = (x-μ)/σ,
It counts the number of standard deviations the value deviates from the mean.
We look at the z-score table after determining the z-score to determine the p-value, which is the percentile of X.
We want Z in this problem to have a p-value of 0.8599, thus Z = 1.08.
The complete question is,
Find the indicated z score. The graph depicts the standard normal distribution with mean 0 and standard deviation 1. Shaded area is 0.8599.
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Select the correct answer from each drop-down menu. This graph represents gasoline price trends in New Mexico. and then it First the price of gasoline in New Mexico
Answers
We have the following:
We can see that time is located on the x axis and the price of gasoline is located on y, we can conclude that in both periods the price increases, but in the first it increases slowly and in the second it increases quickly
Therefore, the answer is:
First, the price of gasoline in New mexico increases slowly, and then it increases quickly
Question 3 (1 point)Find the value of x so that the function has the given value.j(x) = 4x + 11; 13CBlank 1:
Answers
A function is a relation in which each input value (x-value) has one and only one output value (y-value).
You have the following Linear function:
[tex]j\mleft(x\mright)=4x+11[/tex]According to the explained in the problem, you must find an input value that gives you 13 as the output value. Knowing this, you can say that:
[tex]j(x)=13[/tex]Substitute this value into the given function:
[tex]\begin{gathered} j(x)=4x+11 \\ 13=4x+11 \end{gathered}[/tex]The final step is to solve for "x".
Therefore, the value of "x" so that the function has the given value 13, is:
[tex]\begin{gathered} 13-11=4x \\ 2=4x \\ \frac{2}{4}=x \\ \\ x=\frac{1}{2} \end{gathered}[/tex]Write the sentence as an equation.
40 is equal to 208 subtracted from the product of 184 and j
Type a slash (/) if you want to use a division sign.
Answers
Answer:
40 = (184*j) - 208 or 40 = 184j - 208
Please help I’ll mark you as brainliest if correct!!
Answers
Answer:
4 6 3
_ 1 3 9
________
3 2 4
Step-by-step explanation:
you think of of a number
or use logic to answer it
need help with this one
Answers
Applying the relations given, considering equivalent angles, the trigonometric measures for the angles are given as follows:
sin(240º) = -sqrt(3)/2.cos(225º) = -sqrt(2)/2.tan(225º) = 1.How to find the sine of 240º?The sine of 240º can be written as follows:
sin(240º) = sin(180º + 60º).
Applying the first relation given on the second line, we have that:
sin(180º + 60º) = -sin(60º)
It is known that sin(60º) = sqrt(3)/2, hence the sine of 240º is given as follows:
sin(240º) = -sin(60º) = -sqrt(3)/2.
How to find the cosine of 225º?The cosine of 225º can be written as follows:
cos(225º) = cos(180º + 45º).
Applying the second relation given on the second line, we have that:
cos(180º + 45º) = -cos(45º)
It is known that cos(45º) = sqrt(2)/2, hence:
cos(225º) = -cos(45º) = -sqrt(2)/2.
How to find the tangent of 225º?The tangent of 225º can be written as follows:
tan(225º) = tan (180º + 45º).
Applying the third relation given on the second line, we have that:
tan(180º + 45º) = tan(45º)
It is known that tan(45º) = 1, hence:
tan(225º) = tan(45º) = 1.
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