15 points
Line AB←→ passes through the points A(3,−1) and B(1,7).

Which lines are parallel to AB←→?

THIS IS MULTIPLE CHOICES
y=−4x
y=−4x+8
y=4x
y−1=2(x+2)
y+1=−4(x+1)
y=4x+7
y=2x−3
y−6=−4(x−3)

Answers

Answer 1

Lines that are parrellell presume to have the same slope.

So if we just calculate the slope of a function or a line we should be good.

[tex]s=\dfrac{\Delta{y}}{\Delta{x}}=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

Now put in the data from the coordinates of the points [tex]A(3,-1)\wedge B(1,7)[/tex]

[tex]s=\dfrac{7-(-1)}{1-3}=\dfrac{8}{-2}=\underline{-4}[/tex]

The form of a function now looks like: [tex]

f(x)\vee y=-4x+n[/tex]

From here we are no longer required to calculate anything more. Leave n alone.

The solutions are the equations of the form above.

That would mean:

[tex]

y=-4x \\

y=-4x+8 \\

y+1=-4(x+1) \\

y-6=-4(x-3)

[/tex]

Hope this helps.


Related Questions

What is the solution to this Logarithmic Equation?
(Those are L's infront of the N)
ln x + ln x = 0

Answers

Answer:

x = 1

Step-by-step explanation:

ln x + ln x = 0

2ln x = 0

ln x = 0

recall ln x = [tex]log_{e}[/tex]x

so equation becomes

[tex]log_{e}[/tex]x = 0

or [tex]e^{0}[/tex]=x

since anything raised to the power of zero = 1

x = 1

Answer:

x = 1

Step-by-step explanation:

We are to find the solution of the following logarithmic equation:

[tex] ln ( x ) + l n ( x ) = 0 [/tex]

We will add the similar elements to get:

[tex] 2 l n ( x ) = 0 [/tex]

Dividing both sides by 2 and simplify to get:

[tex] \frac { 2 l n ( x ) } { 2 } = \frac { 0 } { 2 } [/tex]

[tex]ln(x)=0[/tex]

Applying the rule [tex]a=log_b(b^a)[/tex] to get:

[tex]0=ln(e^0)=ln(1)[/tex]

[tex]ln(x)=ln(1)[/tex]

Here the logs have the same base, so:

x = 1

Solve the equation for x.
3(6x - 1) = 12 Please help I've tried doing the math and I can't find out what I'm doing wrong​

Answers

3(6x-1) = 12

18x -3 = 12
Add 3 over

18x = 15
X= 5/6

Check

3(6*5/6-1) = 12
3(5-1)= 12
3(4)= 12

Hope this helps!

Answer:

edg 2021 answer is A

Step-by-step explanation:

Question 6 (5 points)







What is the slope of the line through (–4, 3) and (5, 3)?

Question 6 options:

a)
undefined

b)
0

c)
1

d)
9

Answers

[tex]\bf (\stackrel{x_1}{-4}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{5}~,~\stackrel{y_2}{3}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{3-3}{5-(-4)}\implies \cfrac{0}{5+4}\implies \cfrac{0}{9}\implies 0[/tex]

Answer:

b  0

Step-by-step explanation:

To find the slope between 2 points

m= (y2-y1)/(x2-x1)

   = (3-3)/(5--4)

   = (3-3)/(5+4)

   = 0/9

  =0

The slope is 0

What is the slope of (0,32) and (100,212)

Answers

Answer:

( 212 - 0 )/ ( 100 - 32 ) = 212 / 68 = 3.11 ;

Step-by-step explanation:

Let m = slope

m = (delta y)/(delta x)

m = (212 - 32)/(0 - 100)

m = 180/(-100)

m = -180/100

You can reduce -180/100 to the lowest term. I'll let you do that.

What is the product of (2x-1)(x+4)

Answers

Answer:

[tex]\large\boxed{(2x-1)(x+4)=2x^2+7x-4}[/tex]

Step-by-step explanation:

[tex](2x-1)(x+4)\qquad\text{use FOIL:}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(2x)(x)+(2x)(4)+(-1)(x)+(-1)(4)\\\\=2x^2+8x-x-4\qquad\text{combine like terms}\\\\=2x^2+(8x-x)-4\\\\=2x^2+7x-4[/tex]

What is the product of (3a + 2)(4a2 - 2a + 9)?
12a3 - 2a + 18
12a + 6a +9
1203 - 6a2 + 23a + 18
12a3 + 2a + 23a + 18

Answers

The answer is 12a3 + 2a + 23a + 18

To find the product of two expressions, we use the distributive property and multiply each term from the first expression with each term from the second expression, then combine the like terms.

The product of[tex](3a + 2)(4a^2 - 2a + 9) is 12a^3 - 6a^2 + 23a + 18.[/tex]

To find the product of two binomials, you can use the distributive property. In this case, you multiply each term in the first binomial, 3a and 2, by each term in the second binomial, 4a^2, -2a, and 9, and then combine like terms.

[tex](3a + 2)(4a^2 - 2a + 9) = 3a * 4a^2 + 3a * (-2a) + 3a * 9 + 2 * 4a^2 + 2 * (-2a) + 2 * 9[/tex]

Now, perform the multiplications:

[tex]12a^3 - 6a^2 + 27a + 8a^2 - 4a + 18[/tex]

Combine like terms:

[tex](12a^3 - 6a^2) + (27a - 4a) + 1812a^3 - 6a^2 + 23a + 18[/tex]

So, the product of[tex](3a + 2)(4a^2 - 2a + 9)[/tex]is indeed[tex]12a^3 - 6a^2 + 23a + 18.[/tex]

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The teacher tells the class the highest marks obtained by a student in her class is twice the lowest marks plus 7 . the highest score is 87. what is the lowest score? (pls tell with example and formula) thanks! (i am in grade 7)!

Answers

Answer:

40

Step-by-step explanation:

highest=2(lowest)+7

Replace the variables here:

87=2(lowest)+7

minus 7 on both sides

80=2(lowest)

divide both sides by 2

40=lowest

A grocery store donated 60 dozen hot dog rolls to the local Youth Baseball League for their Opening Day ceremonies. A total of 679 hotdogs were served. (Hint: a dozen contains 12 items) a) How many dozen rolls were used? (Express your answer in mixed number form)

Answers

Answer:

7 7/12

Step-by-step explanation:

Find the amount of rolls in all that were donated:

60 x 12 = 720.

The total amount used is 679. Subtract 679 from 720:

720 - 629 = 91.

Find the amount per dozen. Divide 91 with 12:

91/12 = 7 7/12

7 7/12 is your answer.

~

Final answer:

The local Youth Baseball League used 56 dozen rolls with 7 extra rolls for a total of 679 hot dogs, which is expressed as 56 7/12 dozen.

Explanation:

The local Youth Baseball League served a total of 679 hot dogs using rolls from the grocery store.

If a dozen represents 12 items, we need to calculate how many dozens of rolls were used in this circumstance.

Since 679 hot dogs were served and each dozen contains 12 rolls, we can divide 679 by 12 to find the number of dozens.

Dividing 679 by 12, we get:

679 ÷ 12 = 56 dozens with a remainder of 7.

Therefore, 56 dozen rolls were fully used, with an additional 7 rolls from another dozen.

To express this in mixed number form, it would be 56 7⁄12 dozen rolls.

The circle below is centered at the point (8, 4) and has a radius of length 4.
What is its equation?

Answers

Answer:

(x - 8)^2 + (y - 4)^2 = 16.

Step-by-step explanation:

The standard form can be written as:

(x - a)^2 + (y - b)^2 = r^2 where (a, b) is the center and r = the radius.

So here we have a = 8, b = 4 and r = 4.

(x - 8)^2 + (y - 4)^2 = 4^2

(x - 8)^2 + (y - 4)^2 = 16.

Substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t+3) 4t+12 Which statements are true? Check all that apply. The value of both expressions when t=3 is 32. The two expressions are not equivalent. The value of both expressions when t=5 is 15. The value of both expressions when t=5 is 23. The two expressions are equivalent. The value of both expressions when t=3 is 24.

Answers

Answer:

Answers are:

The value of both expressions when t=3 is 32.

The the value of both expressions when t=3 is 24.

The two expressions are equivalent.

Step-by-step explanation:

These answers are 100% correct. I just finished my quiz. I hope this helps

Please mark me brainlyest :)

The correct statements are that, both the equations are equivalent when the value of t is taken 3 and The value of both the equations is 24 when t is taken as 3.

So, the correct options that match the statement above are E and F.

Simplification of expressions.

Taking the value of t as 3 in both the equations, we get,

[tex]4(t+3)\\\\4(3+3)\\\\\\4\ \rm x\ 6=24[/tex]

Now, in the second expression,

[tex]4t+12\\\\4\ \rm x\ 3+12\\\\12+12=24[/tex]

Whereas, when the value of t is taken as 5 the values obtained are as 23 and 32 respectively.

Hence, the correct options are E and F that the equations are of both the values when t is 3 is obtained as 24. And both the expressions are equivalent when t is taken as 3.

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Help me I need to pass so I can go on to the next thing plz someone help me​

Answers

Answer:

i cant see the picture

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

The scale factor is the ratio of the corresponding sides of the image to the original, that is

scale factor = [tex]\frac{CA'}{CA}[/tex] = [tex]\frac{4+16}{4}[/tex] = [tex]\frac{20}{4}[/tex] = 5

What will be the coordinates of vertex A of the image?

Answers

Answer:

(1.0)

Step-by-step explanation:

we know that

The scale factor of the dilation is 0.25 ----> given problem

The coordinates of point A(-5,-3) and F(3,1)

step 1

Find the x-coordinate of point A'

The horizontal distance between A and F is equal to

AFx=3-(-5)=8

The horizontal distance after dilation between A'F is equal to

A'F=0.25*8=2

so

the x-coordinate of vertex A' is equal to the x-coordinate of F minus the horizontal distance after dilation A'F

A'x=3-2=1

step 2

Find the y-coordinate of point A'

The vertical distance between A and F is equal to

AFy=1-(-3)=4

The vertical distance after dilation between A'F is equal to

A'Fy=0.25*4=1

so

the y-coordinate of vertex A' is equal to the y-coordinate of F minus the vertical distance after dilation A'F

A'y=1-1=0

therefore

The coordinates of vertex A of the image is (1.0)

Please help me on this I’m so tired and I can’t sleep until my progress is at 80 and this is the end of my year it’s at 79%

Answers

Answer:

The answer is the bottom left

What is 2^(4/3)
equal to?

Answers

Answer:

∛16

Step-by-step explanation:

First, remember that the denominator always goes outside the radical and the numerator inside. so with that, it looks like this.

∛2^4

simplify.

∛16

Find the area of this figure

Answers

Answer:

22.34 km²

Step-by-step explanation:

Here we have a circle whose diameter is 5  1/3 km.  As an improper fraction, that's 16/3 km.  Half that, or 8/3 km, is the radius.

The area of a circle is A = πr², where r is the radius.

In this case, the area is A = π(8/3 km)², or (64/9)π km², or 22.34 km² (same as first answer choice).

Can someone help me with this

Answers

Hello There!

Your answer is the last option r*n^2

I plugged in the values for each of these dilations.

Rebecca has 45 coins, all nickels and dimes. The total value of the coins is $3.60. How many
of each type of coin does Rebecca have?

Answers

Answer:

Rebecca has 18 nickels and 27 dimes

Step-by-step explanation:

Let x be the number of nickels Rebecca has, then 45-x is the number of dimes she has.

The total value of Rebecca's coins is $3.60.

1 nickel - 5 cents

x nickels - 5x cents

1 dime - 10 cents

45-x dimes - 10(45-x) cents

Total x nickels and 45-x dimes is 5x+10(45-x) cents that is $3.60=360 cents. So,

5x+10(45-x)=360

5x+450-10x=360

5x-10x=360-450

-5x=-90

5x=90

x=18

45-x=45-18=27

What is the base of the exponential expression of 4 to the power of 5

Answers

Final answer:

The base of the exponential expression 4^5 is 4.

Explanation:

The base of an exponential expression refers to the number being raised to a power.

In the exponential expression 4 to the power of 5, the base is 4 because it is the number being multiplied by itself 5 times.

Therefore, the base of the exponential expression 45 is 4.

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Find measure of angle A

Round to the nearest degree

Answers

To solve this question, we must use the cosine rule:

cos(A) = (b^2 + c^2 - a^2)/2bc, where A is the angle you want to find, a is the side opposite that angle, and b and c are the other two sides of the triangle.

Given that we know that a = 6, b = 12, c = 14, we can substitute these values into the formula to get:

cos(A) = (12^2 + 14^2 - 6^2)/2(12)(14)

cos(A) = (144 + 196 - 36)/336

cos(A) = 304/336

cos(A) = 19/21

A = cos-1(19/21)

A = 25° (to the nearest degree)

Which functions could represent a reflection over the y axis of the given function

Answers

Answer:

g(x) = 1/2*(4)^(–x)          and

g(x) =1/2*(1/4)^(x)

Please, see attached picture.

Step-by-step explanation:

Your full question is attached in the picture below

To easily solve this problem, we can graph each equation and see, which one represents a reflection of the function over the y axis.

See, second image.

The answers are

g(x) = 1/2*(4)^(–x)          and

g(x) =1/2*(1/4)^(x)

Two cylinders. The smaller cylinder has height labeled as 1 cm. The larger cylinder has height labeled as 3 cm.

The cylinders are similar. The volume of the larger cylinder is 2106 cubic centimeters. What is the volume of the smaller cylinder?



93 cm3


81 cm3


78 cm3


65 cm3

Answers

Answer: third option.

Step-by-step explanation:

You know that the height of the smaller cylinder is 1 cm and the height of the  larger cylinder is 3 cm, then you can find the volume ratio. This  is:

[tex]Volume\ ratio=(\frac{1\ cm}{3\ cm})^3\\\\Volume\ ratio=\frac{1}{27}[/tex]

Knowing that the volume of the larger cylinder is 2,106 cubic centimeters, you need to multiply it by the volume ratio to find the volume of the smaller cylinder.

Therefore:

[tex]V_{smaller}=\frac{1}{27}(2,106\ cm^3)\\\\V_{smaller}=78\ cm^3[/tex]

ANSWER

The correct answer is C

EXPLANATION

We have that, the smaller cylinder has height 1 cm and the larger cylinder has height 3cm.

The scale factor of similarity is

[tex]k = \frac{1}{3} [/tex]

That's if the smaller cylinder is the image.

The volume of the larger cylinder is 2106 cm³.

To find the volume of the smaller cylinder, we multiply the volume of the larger cylinder by k³

[tex]( { \frac{1}{3} })^{3} \times 2106 {cm}^{3} [/tex]

[tex]{ \frac{1}{27} } \times 2106 = 78 {cm}^{3} [/tex]

A wave with a height of 5 feet and a wavelength of 10 feet has a wave base of
A. 20 feet
B. 10 feet
C. 5 feet
D. 2.5 feet

Answers

Answer:

A.

Step-by-step explanation:

Answer:

C. 5 feet

Step-by-step explanation:

If a wave with a height of 5 feet and a wavelength of 10 feet has a wave base of 5 feet.

B = x/2 = 10ft/2 = 5 feet

What type of scan tool is shown in the above photograph?

A. Laptop computer adapter
B. Factory scan tool
C. Bluetooth interface
D. Generic scan tool

Answers

Final answer:

The scan tool shown in the photograph is a factory scan tool, which is designed for use with a specific brand or model of vehicle. It provides advanced diagnostics and requires a separate adapter to connect to a device. Generic scan tools are more affordable but have limited functionality.

Explanation:

The scan tool shown in the photograph is a factory scan tool. Factory scan tools are specifically designed for use with a particular brand or model of vehicle.

They provide access to advanced diagnostics, including reading and clearing fault codes, monitoring live data, and performing special functions.

Factory scan tools are usually more expensive than generic scan tools, but they offer more comprehensive and accurate information for troubleshooting specific vehicle systems.

They often require a separate adapter or cable to connect to a laptop or other device.

In contrast, generic scan tools are more affordable and can work with multiple vehicle brands.

They typically have limited functionality and may not be able to access all the features and functions of a factory scan tool.

The type of scan tool that is shown in the above photograph is  Bluetooth interface. Option C

Bluetooth interfaces are commonly used as scan tools for connecting to onboard diagnostics (OBD) systems in vehicles wirelessly.

They can be paired with compatible software on devices like smartphones or tablets, allowing users to retrieve diagnostic information from the vehicle's computer system.

This technology provides convenience and flexibility for automotive diagnostics.

What is the approximate area of a circle with a radius of 11 m?

Answers

Answer:

380.13

Step-by-step explanation:

area= (pi)x(r^2)

pi times r squared

Answer:

380 m^2 to the nearest whole number.

Step-by-step explanation:

That would be 3.14 * 11^2

= 380 .

EASY QUESTION PLEASE HELP

Answers

Answer:

Yea its table 1

Step-by-step explanation:

Answer:

The answer is the first table, or Table 1.

Step-by-step explanation:

Happy to help! c:

What is -a^-2 if a = -5? (PLEASE HELP WILL MARK BRAINLIEST!!!)

Answers

Answer:

-1/25

Step-by-step explanation:

-a^-2

-(-5)^-2

=-1/25

Help me please with this

Answers

Answer:

(b) 240

Step-by-step explanation:

First, we use the Pythagorean formula using the given side lengths to find x. Then we use x to find the side lengths. Then we add the side lengths to find the perimeter.

Pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

We see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. The only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

Replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

Lilly and Laura pooled their money to purchase
their brother, Liam, a video game for his birthday.
The video game cost a total of $45. If Laura was
only able to contribute of what Lilly did, how
much did Laura put toward the present?​

Answers

Answer: $22.50

Step-by-step explanation: let x represent the amount Laura and Lilly contributed each. If Laura and Lilly contributed the same amount, x+x=2x=45. If 2x=45, divide both sides by 2 to find the value of x. 45/2= 22.5.

Final answer:

Laura contributed $15 toward the purchase of the video game.

Explanation:

The question is asking to determine the amount contributed by Laura to buy a video game for their brother, Liam, if the entire cost of the game is $45 and Laura contributed half as much as Lilly. For simplicity, let's assume Lilly contributed x dollars. Then Laura, contributing half as much, would have contributed x/2 dollars. Given that their total contribution is $45, we set up the equation x + x/2 = 45. Solving for x, we find that Lilly contributed $30 and Laura, half of this, contributed $15.

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Which statement best describes a square?

A. A special rectangle that has four right angles

B. A special trapezoid that has four sides of equal length

C. A special rectangle that has four sides of equal length

D. A special trapezoid that has four right angles

Answers

Answer:

I believe its B

I hope this helped :)

option C.

The statement that best describes a square is: A special rectangle that has four sides of equal length. This statement aligns with the definition of a square within the field of geometry, where a square is understood as a type of rectangle with all sides being the same length. Therefore, the correct answer is C. A special rectangle that has four sides of equal length.

A square indeed has four right angles, similar to a rectangle. By extension, it has congruent opposite sides and equal angles, but the defining feature that differentiates a square from other rectangles is the fact that all four sides are of equal length. The concept of rectangles forming squares can be seen in the given reference, implying that equal rectangles can be arranged to form a square - a concept important in understanding how a square is a special case of a rectangle.

Please please help me

Answers

Answer:

multiply 2/5 by 4

Step-by-step explanation:

When we divide fractions, we use copy dot flip

2/5 ÷ 1/4

Copy dot flip

2/5 * 4/1

For this case we must find the quotient of the following expression:

[tex]\frac {\frac {2} {5}} {\frac {1} {4}} =[/tex]

Applying double C we have:

[tex]\frac {2 * 4} {5 * 1} = \frac {8} {5}[/tex]

This is equivalent to multiplying the following: [tex]\frac {2} {5} * 4 = \frac {8} {5}[/tex]

Answer:

OPTION A

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