The two angles below form a linear pair, and the expressions are measured in degrees. What is the measure of the smaller angle?
62°
74°
118°
148°
Answers
Answer:
The measure of the smaller angle is 62°
Step-by-step explanation:
we know that
If two angles form a linear pair, then their sum is equal to 180 degrees (supplementary angles)
so
(2x-30)°+(x-12)°=180°
Solve for x
3x=180°+42°
3x=222°
x=74°
The measure of the angles are
(2x-30)°=2(74)-30=118°
(x-12)°=74-12=62° -----> smaller angle
Related Questions
Evaluate: (35 + 25)2 + 3
A) 123
B) 98
Answers
Answer:
[tex]\huge \boxed{123}[/tex]
Step-by-step explanation:
This question is about the order of operations. The order of operations stands for parenthesis, exponent, multiply, divide, add, and subtract.
Do parenthesis.
[tex]\displaystyle (35+25)=60[/tex]
[tex]\displaystyle 60*2+3[/tex]
Multiply from left to right.
[tex]\displaystyle 60*2=120[/tex]
Add numbers from left to right.
[tex]\displaystyle 120+3=123[/tex]
123 is the correct answer.
I’m giving all the points I have, plz help and get it right? Someone please help me
Answers
Answer:
The area (probability) is: 0.6864.
Step-by-step explanation:
According to the statement, we are in front of a normal distribution with the following parameters:
µ (mean) = 0
σ (Standard deviation) = 1.
Then we need to find the area of the shaded region, which is the area between the points -1.21 < z < 0.84.
And the area (probability) is: 0.6864.
Answer:
A. 0.6864
Step-by-step explanation:
The area of the shaded region between the two z-scores indicated in the diagram is 0.6864.
mean = 0
Standard deviation = 1
Oatmeal is packaged in a right circular cylindrical container that has a
radius of 7 centimeters and a height of 16 centimeters.
What is the surface area of this container in terms of pi?
Answers
[tex]\bf \textit{surface area of a cylinder}\\\\ SA=2\pi r(h+r)~~ \begin{cases} h=height\\ r=radius\\ \cline{1-1} h=16\\ r=7 \end{cases}\implies SA=2\pi (7)(16+7) \\\\\\ SA=14\pi (23)\implies SA=322\pi[/tex]
The surface area of the right circular cylindrical container that has a radius of 7 cm and a height of 16 cm in terms of π is 322π. This is obtained by using the formula for surface area of cylinder.
What is the surface area ?
Surface area of cylinder is, S = 2πrh+2πr², where S is the surface area, r is the radius and h is the height of the cylinder.
Given that r =7 cm, h =16 cm,
S = 2πrh+2πr²
= 2π(7)(16)+2π(7)²
= 224π+98π
= 322π
Hence the surface area of the right circular cylindrical container that has a radius of 7 cm and a height of 16 cm in terms of π is 322π.
Learn more about surface area of cylinder here:
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Write the Explicit Rule for the arithmetic sequence:
an = a1 + (n-1)d
1, 3, 5.7. ...
Answers
[tex]a_1=1\\d=2\\a_n=1+(n-1)\cdot 2=1+2n-2=2n-1[/tex]
at the mall buying a pair of shoes and buying a book are independent events the probability that a shopper buys shoes is 0.12 the probability that a shopper buys a book is 0.10 what is the probability that a shopper buys shoes and a book
Answers
Answer: .012
Step-by-step explanation:
We know that when two events A and B are independent of each other , then the probability of their intersection is given by :-
[tex]P(A\cap B)=P(A)\ \cdot\ P(B)[/tex]
Given : The probability that a shopper buys shoes is 0.12
The probability that a shopper buys a book is 0.10
Since, both the events are independent , then the probability that a shopper buys shoes and a book is given by :-
[tex]0.12\times0.10=0.012[/tex]
Hence, the probability that a shopper buys shoes and a book is .012 .
Answer:
0.012 is the answer
Alex and Rachel agreed to form a partnership. The partnership agreement requires that Alex
invest $3000 more than two- third of what Rachel is to invest. If the partnerships’ capital is to be
$55,000, how much should Alex invest?
Answers
Answer:
Alex investment = $ 23,800
Step-by-step explanation:
The statement is Alex and Rachel are forming partnership. According to the agreement Alex invest $3000 more than Rachel's two-third investment and the total capital is $55,000.Find out Alex investment.
Let x be the investment of Rachel. Lets make an equation to find the value of x.
x+2/3x +$3000=$55,000
Combine the like terms:
x+2/3x = 55,000 - 3000
x+2/3x = $52000
Now take the L.C.M of L.H.S
3x+2x/3 = $52000
Now Add the values of x.
5x/3 = $52000
Multiply both the terms by 3.
5x/3 *3 = 3* $52000
5x= 156000
Now divide both the sides by 5.
5x/5 = 156000/5
x= 31200
Now calculate Alex investment. According to the statement Alex invest $3000 more than 2/3 of Rachel.
We have found the Rachel investment which is $31200. Therefore we can write 2/3 of Rachel investment as 2/3(31200).
=2/3(31200)+$3000
=2*10400+3000
=20,800+3000
=$23,800
Rachel investment = $31200
Alex investment = $ 23,800
If you want to check whether the investments are correctly determined or not. You can add both the investments and the result will be the partnership's capital amount.
$31200+$ 23,800 = $55,000 ....
SUBJECT: Algebra
LESSON: Multiplying Polynomials
(x^3 + 2x − 3)(x^4 − 3x^2 + x)
Answers
Answer:
Step-by-step explanation:
(x^3 + 2x − 3)(x^4 − 3x^2 + x)
Multiply each value of 2nd bracket with 1st bracket:
=x^4(x^3 + 2x − 3) - 3x^2(x^3 + 2x − 3) +x(x^3 + 2x − 3)
=x^7+2x^5-3x^4-3x^5-6x^3+9x^2+x^4+2x^2-3x
Now combine the terms with same power:
=x^7-x^5-2x^4-6x^3+11x^2-3x
You can also take the common from the expression:
x(x^6-x^4-2x^3-6x^2+11x-3)....
The product of (x^3 + 2x − 3)(x^4 − 3x^2 + x) is x(x^6-x^4-2x^3-6x^2+11x-3)....
if [tex]f(x)=\frac{1}{3} - \frac{1}{2}x [/tex] and [tex]g(x) = 2x^{2} + x + 4[/tex] find [tex] (f+g)(x) [/tex]
Answers
Answer:
[tex]\large\boxed{(f+g)(x)=2x^2+\dfrac{1}{2}x+4\dfrac{1}{3}}[/tex]
Step-by-step explanation:
[tex](f+g)(x)=f(x)+g(x)\\\\\text{We have}\\\\f(x)=\dfrac{1}{3}-\dfrac{1}{2}x,\ g(x)=2x^2+x+4.\\\\\text{Substitute:}\\\\(f+g)(x)=\left(\dfrac{1}{3}-\dfrac{1}{2}x\right)+(2x^2+x+4)\\\\=\dfrac{1}{3}-\dfrac{1}{2}x+2x^2+x+4\qquad\text{combine like terms}\\\\=2x^2+\left(-\dfrac{1}{2}x+x\right)+\left(\dfrac{1}{3}+4\right)\\\\=2x^2+\dfrac{1}{2}x+4\dfrac{1}{3}[/tex]
What Is the line of reflection between pentagons PQRST and P'Q'R'S'T' ?
A) x = 0
B) y = x
C) y = 0
D) x = 1
Answers
Answer:
A
Step-by-step explanation:
From the diagram:
P(-4,6)→P'(4,6);Q(-7,4)→Q'(7,4);R(-6,1)→R'(6,1);S(-2,1)→S'(2,1);T(-1,4)→T'(1,4).The general rule of this reflection is
(x,y)→(-x,y)
and this is reflection across the y-axis. The y-axis has the equation x=0.
Please answer this correctly
Answers
Answer:
Step-by-step explanation:
When you divide by 100, the decimal moves 2 places to the left.
847.8
When you have moved the decimal 3 places to the left, you have divided by 1000
To reverse the effects of 847.8 by dividing by 10000 you need to multiply by 10000
847.8 * 10000 = 8478000 Try this on your calculator to confirm it.
Same with the last one. To get 847.8 when you have divided by 1 million, you movie the decimal in the answer 6 places.
847.8 * 1000000 = 847800000
Choose the expression that represents a cubic expression.
a. 19x^4 + 18x^3 - 16x^2 - 12x + 1
b. 10x^3 - 6x^2 - 9x + 12
c. -9x^2 - 3x + 4
d. 4x + 3
Answers
Answer:
b. 10x^3 - 6x^2 - 9x + 12
Step-by-step explanation:
A cubic expression has the highest power of the variable to the third power
x^3
b. 10x^3 - 6x^2 - 9x + 12
is the only expression that has the highest power as x^3
a has x^4 and c and d do not have an x^3 term
Final answer:
The expression that represents a cubic expression is (b) [tex]10x^3 - 6x^2 - 9x + 12[/tex], as it is the only option where the highest power of x is three.
Explanation:
The expression that represents a cubic expression is option (b) [tex]10x^3 - 6x^2 - 9x + 12[/tex]. A cubic expression is one in which the highest degree of any term is three, which means the variable (most commonly x) is raised to the third power. Looking at the options provided:
(a) [tex]19x^4 + 18x^3 - 16x^2 - 12x + 1[/tex] is not a cubic expression because it contains a term with x to the fourth power.
(b) [tex]10x^3 - 6x^2 - 9x + 12[/tex] is a cubic expression because the highest power of x is three.
(c)[tex]-9x^2 - 3x + 4[/tex] is not a cubic expression; it's a quadratic expression since the highest power of x is two.
(d) 4x + 3 is also not a cubic expression; it's linear as the highest power of x is one.
4^-x x=-3
i need to stretch this to 20 words and im struggling to come up with things.
Answers
So,
[tex]4^{-x}[/tex]
When [tex]x=-3[/tex]
Becomes,
[tex]4^{-(-3)}=4^3=\boxed{64}[/tex]
Hope this helps.
r3t40
Factor the given expression.
x2 + 16
+ 64
O A. (x+4)2
B. (x + 16)(x + 4)
c. (x+3)(x - 8)
OD. (x+8)2
Answers
Answer:
D. (x+8)^2
Step-by-step explanation:
x^2 + 16x + 64
We are factoring a quadratic trinomial in which the first term is x^2.
We need to find two numbers whose product is 64 and whose sum is 8.
8 * 8 = 64
8 + 8 = 16
The numbers are 8 and 8.
x^2 + 16x + 64 = (x + 8)(x + 8) = (x + 8)^2
Check: If (x + 8)^2 is indeed the correct factorization of x^2 + 16x + 64, then if you multiply out (x + 8)^2, you must get x^2 + 16x + 64.
(x + 8)^2 =
= (x + 8)(x + 8)
= x^2 + 8x + 64
= x^2 + 16x + 64
We get the correct product, so our factorization is correct.
Which best describes the graph of the cubic function f(x) = x^3 +x^2 +x +1?
A. x increases, y increases along the entire graph.
B. As x increases, y increases, decreases, and then increases again.
C. As x increases, y decreases, increases and then decreases again.
D. As x increases, y decrease along the entire graph.
Answers
Answer:
A.
Step-by-step explanation:
Now since the degree is odd (3 in this case) and the leading coefficient is positive (1), then the end behavior is going to be:
for left-end behavior, it is down
for right-end behavior, it is up
We are going to definitely have some increasing action going on because it goes from down to up reading from left to right.
Let's graph it in our ti-84's or whatever you have.
This is a very rough graph but you can see it is just increasing on the entire domain. This means reading the graph from left to right, there is only rise.
I can give you an answer with calculus in it if you prefer.
which function has the greater maximum value f(x)=-2x^2+4x+3 or g(x), the function in the graph?
Answers
Answer:
A
Step-by-step explanation:
Alright so in the graph we can see the highest y that is reach is at x=3 which is y=6. The maximum of the graph g(x) is 6.
Now we have to be a bit more algebraic and messy when comes to finding a maximum (the vertex of the parabola) of f(x)=-2x^2+4x+3.
First step, I'm going to find the x-coordinate of the vertex. Once we do that we can find the y that corresponds to it by using y=-2x^2+4x+3.
So the x-coordinate of the vertex can be found by computing -b/(2a).
a=-2 and b=4 so we are going to plug that in giving us -4/(2*-2)=-4/-4=1.
So the x-coordinate of the vertex is 1 and we are going to find the y that corresponds to that using y=-2x^2+4x+3.
So let's plug in 1.
This gives us:
y=-2(1)^2+4(1)+3
y=-2(1)+4+3
y=-2+4+3
y=2+3
y=5
So the maximum of graph f is 5.
6 is higher than 5
So g has the higher maximum
So the answer is A.
Answer:
A.) g(x)
Step-by-step explanation:
:p
How do you graph
f(x)=7sec(2x)
Answers
Answer:
We know that sec(x) = 1/cos(x). Therefore:
7sec(2x) = 7/cos(2x).
The function won't be define at the points where the denomitator equals zero, which is when x=(2n+1)π/2.
Using a graphing calculator, we get that the graph of the function is the one attached.
Mr. Gomez owns a carpet cleaning bus
different jobs his company was hired to do. For
carpet cleaning business. Problems 1-4 show four
pany was hired to do. For each situation:
Let a represent the initial charge (1
the house.
present the initial charge in dollars) for coming to
Let b represent the number of hours the job takes.
Let c represent the charge (in dollars) for each hour the
job takes.
Let d represent the total cost in dollars) of the job.
1. Determine the total cost of a job.
a. If a = 60, b = 4, and c = 50, write an equation for calculating the total
Answers
Answer:
a) The equation of the total cost is d = a + bc
The equation for calculating the total is d = 60 + 4(50)
b) The total cost for the job is $260
Step-by-step explanation:
* Lets explain how to solve the problem
- Mr. Gomez owns a carpet cleaning business
- The situation of the job;
# a represents the initial charge (in dollar) for coming to the house
# b represents the number of hours the job takes
# c represents the charge (in dollars) for each hour the job takes
# d represents the total cost (in dollars) of the job
* Lets make the equation of the total cost
∵ The initial amount of the job is a dollars
∵ The number of hours the job takes is b
∵ The charge per hour is c dollars
∵ The total cost of the job is d
- The total cost is the sum of the initial amount and the product of
the number of hours the job takes and the charge per hour
∵ The total cost = initial amount + the number of hours × charge
per hour
∴ d = a + b × c
∴ d = a + bc
a)
* The equation of the total cost is d = a + bc
∵ a = $60 , b = 4 hours , c = $50
∴ d = 60 + 4(50)
* The equation for calculating the total is d = 60 + 4(50)
b)
∵ d = 60 + 4(50)
∴ d = 60 + 200
∴ d = 260
* The total cost for the job is $260
Find the value of x in the picture please
Answers
Answer:
The value of x is 4
Step-by-step explanation:
we know taht
The intersecting chords theorem states that the products of the lengths of the line segments on each chord are equal.
so
In this problem
[tex](12)(x)=(8)(x+2)[/tex]
solve for x
[tex]12x=8x+16[/tex]
[tex]12x-8x=16[/tex]
[tex]4x=16[/tex]
[tex]x=4[/tex]
You are a math superstar and have been assigned to be a math tutor to a third grade student. Your student has a homework assignment that requires measuring angles within a parallelogram. Explain to your student how to measure the angles within the shape.
Answers
To measure angles within a parallelogram, use a protractor. Align the protractor with the vertex of the angle and read the number where the other side crosses. Repeat for each angle.
Explanation:To measure the angles within a parallelogram, you can use a protractor. A protractor is a tool that helps measure angles. Here’s how you can use it:
Place the protractor on one side of the parallelogram, aligning the center hole with the vertex of the angle you want to measure.Read the number on the protractor where the other side of the angle crosses it. This number represents the measure of the angle in degrees.Repeat this process for each angle within the parallelogram.For example, if you want to measure one of the angles in a parallelogram and the protractor shows that the two sides of the angle cross at the 60° mark on the protractor, that means the angle has a measure of 60 degrees.
What is the equation of a line that contains the point (2, 1) and is perpendicular to the line y= 3x - 4
Answers
Answer:
see explanation
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 3x - 4 ← is in slope- intercept form
with slope m = 3
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{3}[/tex], hence
y = - [tex]\frac{1}{3}[/tex] x + c ← is the partial equation of the line
To find c substitute (2, 1 ) into the partial equation
1 = - [tex]\frac{2}{3}[/tex] + c ⇒ c = [tex]\frac{5}{3}[/tex]
y = - [tex]\frac{1}{3}[/tex] x + [tex]\frac{5}{3}[/tex] ← equation of line
What is the solution to the equation x + 9.5 = 27.5?
x = 2.9
x = 18
x = 20
x = 37
Answers
Answer:
x = 18.
Step-by-step explanation:
x + 9.5 = 27.5
Subtract 9.5 from both sides:
x = 27.5 - 9.5
x = 18 (answer).
wassup the answer is 18 have fun get that A+
#20-12: Simplify this complex fraction. 1/4 / 2/5
Answers
Answer:
=1/40
Step-by-step explanation:
=1/8/5
=1/40
What elements are in A and B?
Answers
Answer:
Zack and bo
Step-by-step explanation:
A and B is where the circles intersect so zack and bo are the only names I see there.
The elements {Zack, Bo} are in A and B.
What is set A intersection set B?The element that is present in both set A and set B i.e. at the common area of set A and set B in Venn diagram is called set A intersection set B.
Here In Venn diagram set A is green colored which contains the element {Kalie, Noah, Zack, Bo}
Set B is orange colored which contains the element {Julia, Zack, Bo}.
The elements which are present in both A and B are the intersection of set A and set B.
These elements are available at the common joint area of set A and set B.
Here, dark color represents the area that contains the element present in A and B.
In that dark-colored region, the elements present are {Zack,Bo}.
Therefore The elements {Zack, Bo} are in A and B.
Learn more about the intersection of set
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Which of the following represents a function?
Answers
Answer:
a
Step-by-step explanation:
bc its the only one that makes sence to me heheh
Answer: Option D
Step-by-step explanation:
A relationship is a function if and only if for each input value x (domain) only one output value y is assigned (Range)
Option A.
Note that x represents the input values and y represents the output values.
When [tex]x = 3[/tex] then [tex]y = 14[/tex] and [tex]y = 19[/tex].
The input value [tex]x = 3[/tex] has two output values y assigned.
So the relationship is not a function
Option B.
Note that x represents the input values and y represents the output values.
When [tex]x = 3[/tex] then [tex]y = 0[/tex] and [tex]y = -5[/tex].
The input value [tex]x = 3[/tex] has two output values y assigned.
So the relationship is not a function
Option C
Note that x represents the input values and y represents the output values.
When [tex]x = -1[/tex] then [tex]y = -11[/tex] and [tex]y = 5[/tex].
[tex](-1,-11)[/tex] , [tex](-1, 5)[/tex]
The input value [tex]x = -1[/tex] has two output values y assigned.
So the relationship is not a function
Option D
Note that x represents the input values and y represents the output values and for each input value x (domain) only one output value y is assigned (Range)
[tex]\{(-5, 3), (-3, 1), (-1, -1), (1, -1), (3, 1), (5, 3)\}[/tex]
So the relationship is a function
Angela and Brian were measuring the length of each side of the same box, in order to find its volume. They both measured the sides to be 7.2, 3.5, and 8.7. Angela, to avoid mistakes in rounding, first found the volume and then rounded to the nearest whole number. Brian, on the other hand, decided to take the easy route and rounded the length of the sides to the nearest integers and then found the volume using the rounded lengths. What was the positive difference between Angela's and Brian's rounded volumes? (Note: The volume of a box is defined to be the product of its three sides.)
Answers
Answer:
33
Step-by-step explanation:
Using Angela's method, we first multiply, then round.
V = (7.2)(3.5)(8.7)
V = 219.24
V ≈ 219
Using Brian's method, we first round, then multiply.
V = (7.2)(3.5)(8.7)
V ≈ (7)(4)(9)
V ≈ 252
The positive difference between their answers is:
252 − 219 = 33
The positive difference between Angela's and Brian's rounded volumes is 33.
What is volume of cuboid?
The volume of a cuboid is equal to the product of length, width and height of a cuboid.
According to Angela's method,
V = (7.2)(3.5)(8.7)
V = 219.24
First found the volume, then round.
V ≈ 219
According to Brian's method,
V = (7.2)(3.5)(8.7)
First round, then found the volume,
V ≈ (7)(4)(9)
V ≈ 252
The positive difference between their answers = 252 − 219 = 33
Hence, the positive difference between Angela's and Brian's rounded volumes is 33
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Please show to answer this
Answers
Answer:
[tex](q \circ r)(7)=22[/tex]
[tex](r \circ q)(7)=8[/tex]
Step-by-step explanation:
1st problem:
[tex](q \circ r)(7)=q(r(7))[/tex]
r(7) means to replace x in [tex]\sqrt{x+9}[/tex] with 7.
[tex]r(7)=\sqrt{7+9}=\sqrt{16}=4[/tex]
[tex](q \circ r)(7)=q(r(7))=q(4)[/tex]
q(4) means replace x in [tex]x^2+6[/tex] with 4.
[tex]q(4)=4^2+6=16+6=22[/tex].
Therefore,
[tex](q \circ r)(7)=q(r(7))=q(4)=22[/tex]
2nd problem:
[tex](r \circ q)(7)=r(q(7))[/tex]
q(7) means replace x in [tex]x^2+6[/tex] with 7.
[tex]q(7)=7^2+6=49+6=55[/tex].
So now we have:
[tex](r \circ q)(7)=r(q(7))=r(55)[/tex].
r(55) means to replace x in [tex]\sqrt{x+9}[/tex] with 55.
[tex]r(55)=\sqrt{55+9}=\sqrt{64}=8[/tex]
Therefore,
[tex](r \circ q)(7)=r(q(7))=r(55)=8[/tex].
Please please answer this correctly
Answers
Answer:
The answer is 31.83....
Step-by-step explanation:
If you divide 191 by 6 we get:
=31.8333333333
Rounding to the nearest hundredth:
Underline the hundredths place: 31.8333333333
Look to the right. If it is 5 or above 5 then we give it a shove.
If it is 4 or less than 4, we let it go.
In our case it is 3.
Round to 31.83
Therefore the answer is 31.83....
the inverse of f(x)=4x+5
Answers
To find the inverse of a function switch the place of y (aka f(x) ) with x. Then solve for y.
Original equation:
y = 4x + 5
Switched:
x = 4y + 5
Solve for y by isolating it:
x - 5 = 4y + 5 - 5
x - 5 = 4y
(x - 5)/4 = 4y/4
[tex]\frac{1}{4}x-\frac{5}{4} = y[/tex]
Hope this helped!
~Just a girl in love with Shawn Mendes
The slope of MN is −3. Which segments are parallel to MN ? Select each correct answer.
A= RS, where R is at (1, 3) and S is at (4, 2)
B= PQ, where P is at (5, 6) and Q is at (8, 7)
C= TU, where T is at (8, 1) and U is at (5, 10)
D= WX, where W is at (2, 6) and X is at (4, 0)
Report by TurtleAnderson
Answers
Answer:
Option C and D is correct
Step-by-step explanation:
We need to find the slopes of the given segments.
The lines are parallel if there slopes are equal.
A) = RS, where R is at (1, 3) and S is at (4, 2)
[tex]Slope\,\,of\,\,RS =\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\Slope\,\,of\,\,RS=\frac{2-3}{4-1}\\Slope\,\,of\,\,RS=\frac{-1}{3}[/tex]
Option A is incorrect because Slope of MN = -3 while slope of RS = -1/3
B)= PQ, where P is at (5, 6) and Q is at (8, 7)
[tex]Slope\,\,of\,\,PQ =\frac{y_{2}-y_{1}}{x_{2}-xx_{1}} \\Slope\,\,of\,\,PQ=\frac{7-6}{8-5}\\Slope\,\,of\,\,PQ=\frac{1}{3}[/tex]
Option B is incorrect because Slope of MN = -3 while slope of PQ = 1/3
C)= TU, where T is at (8, 1) and U is at (5, 10)
[tex]Slope\,\,of\,\,TU=\frac{y_{2}-y_{1}}{x_{2}-xx_{1}} \\Slope\,\,of\,\,TU\,\,=\frac{10-1}{5-8}\\Slope\,\,of\,\,TU\,\,=\frac{9}{-3} \\Slope\,\,of\,\,TU=-3[/tex]
Option C is correct because Slope of MN = -3 while slope of TU = -3
D)= WX, where W is at (2, 6) and X is at (4, 0)
[tex]Slope\,\,of\,\,WX\, =\frac{y_{2}-y_{1}}{x_{2}-xx_{1}} \\Slope\,\,of\,\,WX\,=\frac{0-6}{4-2}\\Slope\,\,of\,\,WX\,=\frac{-6}{2} \\Slope\,\,of\,\,WX\,=-3[/tex]
Option D is correct because Slope of MN = -3 while slope of WX = -3
Segments TU and WX have the slope -3, which is the same as line MN's slope, making them parallel to segment MN.
The question asks which line segments are parallel to a line MN with a slope of
-3. To determine if two segments are parallel, they must have the same slope. The slope of a line through two points (x1, y1) and (x2, y2) is calculated with the formula
m = (y2 - y1) / (x2 - x1).
Let's find the slopes for each segment:
For segment RS, slope m = (2 - 3) / (4 - 1) = -1 / 3. This is not equal to -3, so RS is not parallel to MN.For segment PQ, slope m = (7 - 6) / (8 - 5) = 1 / 3. This is not equal to -3, so PQ is not parallel to MN.For segment TU, slope m = (10 - 1) / (5 - 8) = 9 / -3 = -3. This slope is equal to -3, so TU is parallel to MN.For segment WX, slope m = (0 - 6) / (4 - 2) = -6 / 2 = -3. This slope is equal to -3, so WX is parallel to MN.Therefore, the segments parallel to MN are TU and WX.
Choose the expression that represents a quadratic expression.
a. 9x - 2
b. 5x^2 + 9x - 1
c. -2x^3 + 8x^2 - 7x + 1
d. x^4 - 12x^3 + 8x^2 - 7x + 1
Answers
Answer:
b. 5x^2 + 9x - 1
Step-by-step explanation:
A quadratic expression had the highest power of the variable at 2
x^2
b. 5x^2 + 9x - 1
a has the highest power as x
c and d goes higher than x^2
The expression that represents a quadratic expression is 5x^2 + 9x - 1 (option b), which is in the form ax^2 + bx + c, where a, b, and c are constants.
The expression that represents a quadratic expression is option (b), which is 5x^2 + 9x - 1. A quadratic expression is generally in the form ax^2 + bx + c, where a, b, and c are constants, and a is not equal to zero. This type of equation represents a parabola when graphed on a coordinate plane. The examples provided in the question show how various terms relate to the constants a, b, and c in the quadratic equation, and the use of the quadratic formula for solving such equations. Option (a) is linear, option (c) is cubic, and option (d) is quartic, as indicated by the highest powers of x.