The simplification by combining like terms of 2(h + 2g) - (g - h) is 3(h + g).
According to the given question.
We have an expression 2(h + 2g) - (g - h).
As we know that, like terms are terms whose variables (and their exponents such as the 2 in x2) are the same. when we combine like terms, such as 2x and 3x, we add or subtract their coefficients.
Since, we have to combine the like terms of the given expression
2(h + 2g) - (g - h).
Here 2h, and h and 2g and -g are the like terms.
So, we add and subtract coeffcients of h and g to simplify the given expression.
Therefore, the simplification of 2(h + 2g) - (g - h) is given by
= 2(h + 2g) - (g - h)
= 2h + 4g - g + h
= 3h + 3g
= 3(h + g)
Hence, the simplification by combining like terms of 2(h + 2g) - (g - h) is
3( h + g).
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Find the distance between pair of parallel lines with the given equations.
y=-6 y=1
The distance between pair of parallel lines with the given equation
y=-6 y=1 is 7 units
Definition of parallel linesParallel lines are any two or more lines that lie in the same plane but never cross one another. Both have the same slope and are equally distant from one another. No matter how far we extend a parallel line, it will always remain straight.
The fundamental characteristics listed below make it simple to recognize parallel lines.
Straight lines which are always the same distance apart from one another are known as parallel lines.No matter how far apart they are from one another, the parallel lines can never intersect.The two lines have the coefficient of x, zero. So, the slopes are 0.
Therefore, the lines are horizontal lines passing through y = −6 and y = 1.
The perpendicular distance between the these horizontal lines is
1 - (-6) = 7 units.
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Solve each equation. 12=2-k
The solution of the given linera equation in one variable 12=2-k is at k = 10.
According to the given question.
We have a linear equation in one variable 12 = 2 - k.
As we know that, linear equation in one variable is an equation which is expressed in the form of ax+b = 0, where a and b are two integers, and x is a variable and has only one solution.
Therefore, the solution of the linear equation in one variable 12 = 2 - k is given by
12 = 2 - k
⇒ 12 - 2 = -k (subtracting 2 from both the sides)
⇒ 10 = -k
⇒ k = 10
Hence, the solution of the given linera equation in one variable 12=2-k is at k = 10.
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Translate the sentence into an equation.
Twice the difference of a number and 3 is equal to 5.
Use the variable v for the unknown number.
Answer:
2(v-3) = 5
Step-by-step explanation:
2(v-3) = 5
The band boosters sell cider and doughnuts at home football games.
Last week they sold 318 cups of cider at $0.75 per cup and 12 dozen
doughnuts at $1.25 per doughnut. What were the total sales?
318* 0.75= $238.5
12*12=144 doughnuts total
144*1.25= $180
238.5+180= $418.50
the total sales were $418.50
i need this asap pls pls pls …
The zeros of the given polynomial equation are {-1, -2, -3}.
The given polynomial equation is g(a)=4a³+24a²+44a+24.
What is the Rational Zeros Theorem?The rational root theorem is also known as the rational zero theorems (or) the rational zero tests (or) rational test theorem and is used to determine the rational roots of a polynomial function. The general form of a polynomial function is [tex]f(x) = a_nx^n+a_{n-1}x^{n-1}+.......+a_2x^2+a_1x+a_0[/tex]. Here, the value(s) of x that satisfy the equation f(x) = 0 are known as the roots (or) zeros of the polynomial.
Now, g(a)=4a³+24a²+44a+24
⇒ 4a³+24a²+44a+24=0
⇒ 4(a³+6a²+11a+6)=0
⇒ a³+6a²+11a+6=0
Now, put ....-3, -2, -1, 0, 1, 2, 3,....in a³+6a²+11a+6=0 and simplify and check they are equal to 0.
Put a=-3 and check.
That is, (-3)³+6(-3)²+11(-3)+6=0
⇒-27+54-33+6=0
⇒0=0
So, -3 is the zero of the given equation.
Put a=-2 and check.
That is, (-2)³+6(-2)²+11(-2)+6=0
⇒-8+24-22+6=0
⇒0=0
So, -2 is the zero of the given equation.
Put a=-1 and check.
That is, (-1)³+6(-1)²+11(-1)+6=0
⇒-1+6-11+6=0
⇒0=0
So, -1 is the zero of the given equation.
Therefore, the zeros of the given polynomial equation are {-1, -2, -3}.
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Pablo bought a sweater on sale for 25% off the original price and another 40% off the discounted price. If the sweater originally cost 48 , what was the final price of the sweater?
a. 14.40
b. 21.60
c. 31.20
d. 36.00
When Pablo bought a sweater on sale for 25% off the original price and another 40% off the discounted price, if the sweater originally cost 48 then the final price of the sweater is $21.6
Given,
The Original cost of the sweater = $48
First,
Pablo bought a sweater on sale for 25% off the original price
Then,
[tex]48-48(\frac{25}{100} )[/tex]= $36
Then another 40% off the discounted price
Final price = [tex]36-36(\frac{40}{100} )[/tex]
=$21.6
Hence, when Pablo bought a sweater on sale for 25% off the original price and another 40% off the discounted price, if the sweater originally cost 48 then the final price of the sweater is $21.6.
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A wide receiver starts from his 15-yard line on the right hash mark and runs a route that takes him 12 yards to the left and down field for a gain of 17 yards. Write a translation vector to describe the receiver's route.
A translation vector describing the receiver's path < -12, 17 >.
What is termed as translation vector?The distance vectors that almost all atoms in the grouping are translated through just to form another cluster inside the solid are defined by translation vectors.
Tv can be in either Cartesian or internal coordinates. If a Tv is described in Cartesian coordinates, it is directly used. If it is defined in internal coordinates, it is converted to Cartesian coordinates as well as the Cartesian coordinates of atom 1 (real or dummy) are subtracted from it at run time. If atom 1 is at the origin, i.e. (0.0, 0.0, 0.0), then the coordinates defined by Tv are indeed the translation vectors; this simplifies visualizing this same translation vectors using a GUI because a line drawn from atom 1 to Tv would represent this same translation vector.Now, as per the stated question;
The horizontal (lateral, x) change is represented by the number 12. This same player runs 12 yards to the left.
The vertical (up/down, y) transition is represented by the number 17. In addition, the player runs 17 yards up the field.
When you put it all together, you get < -12, 17 >.
Therefore, the receiver's route is defined by translation vector < -12, 17 >.
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HELP FIND THE AVERAGE RATE OF CHANGE
The average rate of change of a function [tex]f(x)[/tex] as [tex]x[/tex] varies from [tex]x=a[/tex] to [tex]x=b[/tex] is given by the so-called difference quotient
[tex]\dfrac{f(b) - f(a)}{b - a}[/tex]
If we plot [tex]f(x)[/tex], this difference quotient would correspond to the slope of the line through two points [tex](a,f(a))[/tex] and [tex](b,f(b))[/tex] and intersecting with the curve [tex]y=f(x)[/tex].
(a) The average rate of change of height from 0 to 6.6 seconds is
[tex]\dfrac{H(6.6) - H(0)}{6.6 - 0}[/tex]
and is measured in m/s.
Consult the table for the values of [tex]H(t)[/tex] - it tells us [tex]H(0)=0[/tex] and [tex]H(6.6)=198[/tex]. So the average rate of change of height in this time is
[tex]\dfrac{198 - 0}{6.6 - 0} \dfrac{\rm m}{\rm s} = \boxed{30\dfrac{\rm m}{\rm s}}[/tex]
(b) Similarly, the average rate of change of height from 8.8 to 13.2 seconds is
[tex]\dfrac{H(13.2) - H(8.8)}{13.2-8.8} \dfrac{\rm m}{\rm s} = \dfrac{0 - 44)}{4.4} \dfrac{\rm m}{\rm s}= \boxed{-10 \dfrac{\rm m}{\rm s}}[/tex]
PROOF Write the specified type of proof. two-column proof
Given: RSTUV is a pentagon.
Prove: m ∠ S+m \VS T U+m∠ T U V +m ∠ V+m ∠ V R S=540
According to the given data the specified type of proof. two-column proof are:
m∠ S + m∠ 1 + m∠ 2 + m ∠3 + m ∠4 + m∠ 7 + m∠ 6 + m∠ V + m∠ 5 = 540 (Add. Prop.) m ∠S + m ∠STU + m ∠TUV + m∠ V + m∠ VRS = 540 (Subst.)What exactly is two-column proof?A two-column geometric proof is made up of a set of claims and the reasons why we know they are true. The statements are stated in the left column, while the reasons for making them are mentioned in the right column.
What exactly is proof geometry?Geometric proofs are assertions that demonstrate the truth of a mathematical notion. Proof must comprise numerous phases in order to be proven true. These steps consist of reasons and declarations. Geometric proofs come in a variety of forms, include two-column proofs, paragraph proofs, and flowchart proofs.
According to the given data:Given: RSTUV is a pentagon.
Prove: m ∠ S+m \VS T U+m∠ T U V +m ∠ V+m ∠ V R S=540
1. RSTUV is a pentagon. (Given)
2. m∠ S + m ∠1 + m ∠2 = 180;
m ∠3 + m ∠4 + m∠ 7 = 180;
m ∠6 + m ∠V + m∠ 5 = 180 ( Sum Thm.)
3. m∠ S + m∠ 1 + m∠ 2 + m ∠3 + m ∠4 + m∠ 7 + m∠ 6 + m∠ V + m∠ 5 = 540 (Add. Prop.)
4. m ∠VRS = m ∠1 + m∠ 4 + m ∠5;
m∠ TUV = m∠ 7 + m ∠6;
m ∠STU = m ∠2 + m∠ 3 ( Addition)
5. m ∠S + m ∠STU + m ∠TUV + m∠ V + m∠ VRS = 540 (Subst.)
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Round...
1. 24.263 to the nearest tenth.
Answer: 24.3
Step-by-step explanation:
A tenth would be the first decimal place.
Since the digit after the digit we need to round is above 5, then we need to round up.
The two turns into a 3.
I would really appreciate if you give brainliest.
An example is a counterexample to a general statement if it makes the statement false. Show that each of the following statements is false by finding a counterexample.
The opposite of each whole number is a whole number.
An example is a counterexample to a general statement if it makes the statement false is given by an example of the opposite of each whole number is not a whole number, it is an integer.
As given,
Given statement:
Opposite of each whole number is a whole number
Consider whole number=2
Opposite of 2 is -2
-2 is not a whole number it is an integer.
Therefore, an example is a counterexample to a general statement if it makes the statement false is given by an example of opposite of each whole number is not a whole number.
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Find the distance between each pair of parallel lines with the given equations).
y=2 x-3
2 x-y=-4
Distance between parallel lines y=2x-3 and 2x-y=-4 is [tex]\frac{7\sqrt{5} }{5}[/tex] .
Two lines a₁x+b₁y+c₁=0 and a₂x+b₂y+c₂=0 are said to be parallel if a₁=a₂ , b₁=b₂.
Distance between two two parallel lines is given by [tex]\frac{|c1-c2|}{\sqrt{a^{2} +b^{2} } }[/tex].
In the given question
2x-y-3=0 and 2x-y+4=0
Given the coefficient of x and y is same in both the line therefore they are parallel.
given, a(coefficient of x)=2 , b(coefficient of y= -1 , c₁=-3 , c₂=4.
Substituting the values in the distance formula we get
[tex]d=\frac{|-3-4|}{\sqrt{2^{2}+(-1)^{2} } }[/tex]
[tex]=\frac{7}{\sqrt{4+1} } =\frac{7}{\sqrt{5} }[/tex]
on rationalizing we get
[tex]d=\frac{7\sqrt{5} }{5}[/tex]
Therefore , the distance between parallel lines y=2x-3 and 2x-y=-4 is [tex]\frac{7\sqrt{5} }{5}[/tex].
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Multiply -
60/21 by 7/30
The midpoints of the sides of a triangle are located at (a, 0),(2 a, b) and (a, b). If one vertex is located at the origin, what are the coondinates of the other vertices? Explain your neasoning.
The coordinates of the other vertices are (2a, 2b) and (2a. 0) after using the mid-point theorem.
What is the triangle?In terms of geometry, a triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.
From the data, we can draw a triangle as shown in the attached picture.
Let the coordination of B is at (0, 0)
The coordinate of point A:
A(x, y):
a = (x + 0)/2
x = 2a
y = 2b
A(x, y): (2a, 2b)
The coordinate of point C:
C(X, Y):
2a = (X + 2a)/2
4a = X + 2a
X = 2a
b = (Y + 2b)/2
Y = 0
Thus, the coordinates of the other vertices are (2a, 2b) and (2a. 0) after using the mid-point theorem.
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5p − q − p; use p = 3, and q = 4
Step-by-step explanation:
5p − q − p; use p = 3, and q = 4
5*3-4-3
=15-7
=8
which number sentence does the following number line represent?
1 + (-5) = 6
5 + 1 = 6
1 + (-6) = -5
-5 + 6 = 1
The number expression that represents the number line option (C)
1 + (-6) = -5 is correct.
What is a number line?
It is defined as the representation of the numbers on a straight line that goes infinitely on both sides.
A number line can be used to add and subtract integers. When adding positive numbers we move to the right and when adding negative numbers we move to the left.
When subtracting positive numbers we move to the left and when subtracting negative numbers we move to the right.
We can frame a number expression using the number line:
1 + (-6) = -5
1 - 6 = -5
The arithmetic operation can be defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
It begins at 1 and moves backward 6 before ending at -5.
The number phrase 1 + (-6) = -5 on the number line represents the (C) choice correctly.
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Determine whether y varies directly with x . If so, find the constant of variation.
y=4 x+1
The required value of constant of variation, k does not exist for which x and y vary directly.
What is the constant of proportion?
A constant of proportion is illustrated as the ratio which relates two given quantities with each other in the relationship of proportion. Constant of proportion is also called constant variation, rate of change, and constant ratio.
Solving for the value of constant of variation
When a quantity varies directly with others, then we have a relation, y = kx, where k is the constant of the proportion —-- 1
Given relation is y = 4x + 1
On comparing it with equation 1, we get, that y does not vary directly with x
Hence, the required value of constant of variation does not exist.
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Write a two-column proof.
Given: QR ≅ SR ≅ WR ≅ VR
Prove: QT ≅ WU
We can conclude that line QT ≅ WU.
What exactly is meant by a triangle's congruency?Two triangles are said to be congruent if their three corresponding sides are equal and their three corresponding angles are equal in size.These triangles can be moved, rotated, flipped, and turned to appear identical.If they are repositioned, they will coincide.Two triangles are congruent if they satisfy all five congruence conditions.They are side-side-side (SSS), side-angle-side (SAS), angle-side-angle (ASA), angle-angle-side (AAS), and right angle-hypotenuse-side (RHS).So,
Given: QR ≅ SR ≅ WR ≅ VR
To Prove: QT ≅ WU
Line VRS ⊥ WRQAs ∠UWR and TQR = 90°.So, UW and QT ⊥ WRQTherefore, we can conclude that line QT ≅ WU.
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Determine the distance between each pair of points. Then determine the coordinates of the midpoint M of the segment joining the pair of points.
A(4,7,9) and B(-3,8,-8)
The midpoint is at (11/2, 15/2, 1/2)
In the given statement is
To find the midpoint of the line segment joining the pair of points
A(4,7,9) and B(-3,8,-8)
Midpoint:
The coordinates of the midpoint of a line segment are the average of the coordinates of the end points.
m = (A +B)/2
If we are given three points and we wish to find the midpoint of those points, we need to use the midpoint formula m =( [tex]\frac{x_{1}+x_{2} }{2} , \frac{y_{1}+y_{2} }{2} ,\frac{z_{1}+z_{2} }{2}[/tex] )
where:
(x1 , y1 ,z1) are the coordinates of the first point:
(x2 , y2 , z2) are the coordinates of the second point:
Now, We are given the three points A(4,7,9) and B(-3,8,-8)
Solving for the midpoint , we have,
m = ([tex]\frac{4+7}{2} ,\frac{7+8}{2} , \frac{9+(-8) }{2}[/tex])
m = (11/2, 15/2, 1/2)
Therefore, the midpoint is at ( 11/2, 15/2, 1/2)
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In captivity, a male lion grows to weight about 420 lbs with a standard deviation of 35 lbs. A zoo would like to have a lion that is in the largest 25% of male lions based on weight. How much should a male lion weigh for the zoo to obtain the male lion?
456.25 male lion weigh for the zoo to obtain the male lion.
what is Normal distribution?Normal distribution, also known as the Gaussian distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
Given:
A male lion grows to weight about 420 lbs with a standard deviation of 35 lbs.
A zoo would like to have a lion that is in the largest 25% of male lions based on weight.
So,
z= (x- [tex]\mu[/tex])/[tex]\sigma[/tex]
Now substituting the value
1.036 = X-420/35
36.25= X- 420
X= 36.25 + 420
X= 456.25
Hence, 456.25 male lion weigh for the zoo to obtain the male lion.
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here for the solution We have here, that jet is equal to 0.52. Their score corresponding to 30 area under standard normal distribution. By using jet table to the right up ahead here, X is equal to zero multiplied by sigma plus mu. Here by substituting the value for the next step, we get 0.52 dataset, multiply by sigma. That is 35 plus mu, That is four 20. By simplifying this, we get the value is 4 83.2, which is approximately equal to 4 38.4. Which is our Answy for the answer is 4:38.4 is the correct choice for the answer. So here is the solution. The answer. Please go through this.
State the property that justifies each statement.
If m∠1+m ∠2=90 and m ∠2=m ∠3 , then m∠ 1+m∠ 3=90 .
Each assertion is supported by a property. The transitive feature of equality justifies this.
What exactly is meant about transitive property?If x, y, and z are the three quantities, and then if x is connected to y by some rule and y is related to z through the same rule, we are able to say x is related to z by the same rule.
According to the given data:m∠1+m ∠2=90
m ∠2=m ∠3
m∠ 1+m∠ 3=90 .
The property that justifies each statement is This is justified by the transitive property of equality.
because :
Transitive Property of Equality show If a = b and b = c, then a = c.
so in the given statement the m∠1+m ∠2=90 and ∠2=m ∠3 so m∠ 1+m∠ 3=90.
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ASAP please
A rotating sprinkler is placed in one corner of a garden . If it has a reach of 8m and rotates through an angle of 30°, calculate the area of garden not being watered. Give your answer in terms of π
The area that is not covered by the sprinkler is 33.49 m².
The sprinkler is placed in one corner of the garden.
It has a reach of 8 m.
radius = r = 8 m
It means that it will form a segment of 90°.
So, the area it should cover will be:
Area that should be covered = 1 / 4 π r²
= 1 / 4 π (8)² m²
= 1/ 4 π (64) m²
= 16 ( 3.14 ) m²
= 50.24 m²
Now, it only rotates 30°.
It means that, it covers only 1 / 3 area.
So, the area actually covered = 1 / 3 × 50.24 m²
= 16.75 m²
The area that is not covered = 50.24 m² - 16.75 m²
The area that is not covered = 33.49 m²
Therefore, we get that the area that is not covered by the sprinkler is 33.49 m².
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I WILL GIVE BARINLIEST TO THE FIRST PERSON WHO ANSWERS MY QUESTION!!!!!
Can someone please help me? I really need the help right now.
Which of the following is equal to g(x)?
A. 2(x + 2)
B. 2x + 2
C. 2x - 2
D. 2(x - 2)
( Also I am bo*red...Can someone talk to me.....Anyone...Idc who you are....Unless your cr33py then I care)
Using translation concepts, the formula for function g(x) is given by the following option:
D. g(x) = 2^(x - 2)
What is a translation?A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s definition or in it’s domain. Examples are shift left/right or bottom/up, vertical or horizontal stretching or compression, and reflections over the x-axis or the y-axis.
From the graph of the functions, we have that:
f(x) = 2 when x = 1.g(x) = 2 when x = 3.f(x) = 4 when x = 2.g(x) = 4 when x = 4.This means that g(x) is a shift right of 2 units of f(x), that is:
g(x) = f(x - 2).
Hence:
g(x) = 2^(x - 2)
The formula for function g(x) is given by the following option:
D. g(x) = 2^(x - 2)
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The height of a thrown ball is a quadratic function of the time it has been in the air. The graph of the quadratic function is the parabolic path of the ball. The vertex of the graph is (1, 20) and the path of the ball includes the point (0, 4). What is an expression that defines this function? Write the quadratic equation in vertex form and in the form y = ax^2 + bx + c.
An expression that defines this quadratic function is ax² + bx + c = 0.
An expression that defines the quadratic equation in vertex form is equal to y = -16(x - 1)² + 20 and y = -16x² + 32x + 4.
Given the following data:
Vertex, (h, k) = (1, 20).Point (x, y) = (0, 4).What is a quadratic function?A quadratic function can be defined as a mathematical expression that can be used to define and represent the relationship that exists between two or more variable on a graph.
In Mathematics, the graph of any quadratic function is parabolic because it is a u-shaped curve. Also, the standard form of a quadratic function is given by;
ax² + bx + c = 0
Mathematically, the standard equation with the vertex for any parabola is given by:
y = a(x - h)² + k.
where:
h and k are the vertex.a is a point.Substituting the given parameters into the formula, we have;
y = a(x - h)² + k.
4 = a(0 - 1)² + 20.
4 = a + 20
a = -20 + 4
a = -16.
Therefore, an expression that defines this quadratic function is equal to ax² + bx + c = 0.
For the quadratic equation in vertex form, we have:
y = -16(x - 1)² + 20.
y = -16(x - 1)(x - 1) + 20.
y = -16(x² - x - x + 1) + 20.
y = -16(x² - 2x + 1) + 20.
y = -16x² + 32x - 16 + 20.
y = -16x² + 32x + 4.
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A veterinarian recorded a cat’s resting heart rate to be 120 beats over a 45-second time period. Complete the table to find the number of heartbeats in different amounts of time. Then find the constant of proportionality in beats per minute. number of hearveats
Number of Minutes Number of Heartbeats
0.25
0.5
0.75
1
Answer:
1. 0.6 (continues)
2. 1.3 (continues)
3. 2
4. 2.7
Plsss help me
Ayuda, es de matemáticas
Answer:
Step-by-step explanation:
I need this answered and explained I missed a lesson from being sick and don’t understand this
a) 4, associative property
- This is the associative property of multiplication. When everything is multiplied, you can rearrange the parentheses.
b) 8, commutative property
- This is the commutative property. It means that when multiplying two numbers together, the order doesn't matter.
c) 0, zero property
- This is the zero property of multiplication. This states that anything times 0 is equal to 0. In this case, 0 times 3 is 0.
d) 8, identity property
- This is the identity property of multiplication. This means that any number times 1 is itself. In this case, 9 times 1 is 8.
Please note how a property is worded may differ per class.
Algebra solve the equation show work
Answer:
Step-by-step explanation:
3t + 4 = 12 + 3t
4 = 12 (subtract 3t from both sides)
0 = 8 (subtract 4 from both sides)
Relations, Domains
R = {(-3, -2), (-3, 0), (-1, 2), (1, 2)}
Select all numbers that are in the domain.
The domain are -3, -1, 1 . The range is -2, 0, 2 .
What is relation and domain?A relation is a rule that relates an element from one set to the other set.The domain is the set of all first elements of the ordered pairs. The range on the other hand is the set of all second elements of the ordered pairs.A relation between two sets is a collection of ordered pairs containing one object from each set. If the object x is from the first set and the object y is from the second set, then the objects are said to be related if the ordered pair (x, y) is in the relation.The range of a relation is the set of the second coordinates from the ordered pairs.Note that both functions and relations are defined as sets of lists. In fact, every function is a relation. However, not every relation is a function. In a function, there cannot be two lists that disagree on only the last element.To know more about Relation visit:
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Answer: -3,-1, and 1.
Step-by-step explanation: You are given the relation R = {(-3, -2), (-3, 0), (-1, 2), (1, 2)} The domain of the relation are all possible inputs and the range of the relation are all possible outputs. So, the inputs are : -3,-1,1; and the outputs are : -2,0,2. As a result, the domain is : -3,-1,1; and the range is : -2,0,2.
solve for -7x-3x+2=-8x-8
In linear equations, x = 5 is value of x .
What are instances of linear equations?
Ax+By=C is the usual form for two-variable linear equations. A standard form linear equation is, for instance, 2x+3y=5. When an equation is given in this format, finding both intercepts is rather simple (x and y). When attempting to solve systems involving two linear equations, this form is also quite helpful.-7x-3x+2=-8x-8
-7x -3x + 8x = -8 - 2
-10x + 8x = -10
-2x = -10
x = 5
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