A line segment has endpoints at (–1, 4) and (4, 1). Which reflection will produce an image with endpoints at (–4, 1) and (–1, –4)?
a reflection of the line segment across the x-axis
a reflection of the line segment across the y-axis
a reflection of the line segment across the line y = x
a reflection of the line segment across the line y = –x
Answer:
a reflection of the line segment across the line y = –x
Step-by-step explanation:
Reflecting across the line y = -x switches the x- and y-coordinates and negates both. This will map
(-1, 4)→(4, -1)→(-4, 1) and
(4, 1)→(1, 4)→(-1, -4)
The reflection that produces an image with endpoints at (–4, 1) and (–1, –4) is a reflection of the line segment across the line y = -x.
Option D is the correct answer.
What is a reflection?There are two ways of translation.
Along x-axis:
(x, y) – (x, -y)
Along y-axis:
(x, y) - (-x, y)
We have,
The reflection of a point over the x-axis involves changing the sign of its
y-coordinate while leaving the x-coordinate unchanged.
The reflection of a point over the y-axis involves changing the sign of its
x-coordinate, while leaving the y-coordinate unchanged.
The reflection of a point over the line y = x involves swapping its x and y-coordinates.
The reflection of a point over the line y = -x involves swapping the sign of its x and y-coordinates.
To find the reflection that produces an image with endpoints at (–4, 1) and (–1, –4), we need to reflect the original line segment across a line that produces an image with the same length and orientation as the given endpoints.
One way to do this is to plot the points and draw the line segment, then draw the candidate lines of reflection and see which one produces the desired image.
Another way is to compute the midpoint of the original line segment and see which reflection takes that midpoint to the midpoint of the desired image.
Using the second method, the midpoint of the original line segment is:
= ((–1 + 4) / 2, (4 + 1) / 2)
= (1.5, 2.5)
The midpoint of the desired image is:
= ((–4 + –1) / 2, (1 + –4) / 2)
= (-2.5, -1.5)
To find the reflection that takes (1.5, 2.5) to (-2.5, -1.5), we can see that this is the reflection across the line y = -x.
Therefore,
The reflection that produces an image with endpoints at (–4, 1) and (–1, –4) is a reflection of the line segment across the line y = -x.
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What is the radius of the circle whose center is the origin and that passes through the point (5 12)?
The radius of the circle whose center is the origin and that passes through the point (5 12) is 13 units.
What is the radius of a circle?explanation;
taking from origin,
let 5 units equat to x - axixs
and y = 12 units
so using pythagoras theorm radius = square root of (12)² + (5)²
= [tex]\sqrt{169}[/tex]
=13 answer.
The radius of a circle is the length of the line section from the middle to some extent at the circumference of the circle. it is commonly abbreviated as 'r'. There can be countless radii drawn in a circle and the duration of all those radii can be the identical. it is half of the diameter of the circle.
Radius of a circle from region: in case you know the place A , the radius is r = √(A / π) . Radius of a circle from circumference: if you understand the circumference c , the radius is r = c / (2 * π) . Radius of a circle from diameter: if you understand the diameter d , the radius is r = d / 2
A line phase extending from the middle of a circle or sphere to the circumference or bounding surface. 2a = the bone at the thumb side of the human forearm also : a corresponding a part of vertebrates above fishes. b=the 1/3 and commonly biggest vein of an insect's wing.
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A rectangle is 4 cm longer than it is wide, and its area is 117 cm2 . find its dimensions.
The length and width of the rectangle are [tex]13[/tex] cm and [tex]9[/tex] cm respectively whose area is [tex]117 cm^2[/tex].
Let the width of the rectangle be [tex]x[/tex].
Then the length of the rectangle is [tex]x+4[/tex].
Area of a rectangle [tex]=[/tex] length [tex]\times[/tex] width
Area [tex]= 117 cm^2[/tex]
[tex](x+4) \times x = 117[/tex]
[tex]x^2+4x=117[/tex]
[tex]x^2+4x-117=0[/tex]
[tex]x^2+13x-9x-117=0[/tex]
[tex]x(x+13)-9(x+13)=0[/tex]
[tex](x+13)(x-9)=0[/tex]
[tex]x+13=0, x-9=0[/tex]
[tex]x=-13, x=9[/tex]
Since, length cannot be negative. So, [tex]x=-13[/tex] is not possible.
So, [tex]x=9[/tex].
And [tex]x+4=13[/tex]
So, length [tex]= 13[/tex] cm and width [tex]= 9[/tex] cm.
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Are these answers correct? If not, what would the answers be?
An elliptical park is being built in your neighborhood. The park is 25 meters long and 40 meters across. If two swings are to be placed at the foci of the ellipse, how far from the center must the swings be located?
Answer:the answer is 20
Step-by-step explanation:
The total amount Toni spent on shirts is $64. If you rewrite 64 using 2 as the base, what would be the exponent?
To rewrite 64 using 2 as the base, the exponent is 6.
Explanation:To rewrite 64 using 2 as the base, we need to find the exponent that represents the power of 2 that equals 64. In other words, we need to solve the equation 2 to the power of x equals 64. We can do this by finding the logarithm with base 2 of 64. Using a calculator, we find that log base 2 of 64 is 6. Therefore, the exponent is 6.
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Nathan is 5 years older than dan. if the total of their ages is 19, how old is dan?
A jacket cost 54 the price was reduced by 20% off what is the sale price
What is the solution of the equation x^2 + 6x + 6 = 0?
is -1/17 a repeating decimal
A repeating decimal, also called a recurring decimal, is a number whose decimal representation eventually becomes periodic (i.e., the same sequence of digits repeats indefinitely). The repeating portion of a decimal expansion is conventionally denoted with a vinculum so, for example,
The minimum number of digits that repeats in such a number is known as the decimal period.
Repeating decimal notation was implemented in versions of the Wolfram Language prior to 6 as PeriodicForm[RealDigits[r]] after loading the add-on package NumberTheory`ContinuedFractions`.
All rational numbers have either finite decimal expansions (i.e., are regular numbers; e.g., ) or repeating decimals (e.g., ). However, irrational numbers, such as neither terminate nor become periodic.
Numbers such as 0.5 are sometimes regarded as repeating decimals since.
Two-thirds of a number is negative six. Find the number.
a. -9
b. -8
c. -4
Answer:
Step-by-step explanation:
the answer is 9
Leila is choosing a 2-letter password from the letters A, B, and C. The password cannot have the same letter repeated in it. How many such passwords are possible?
How many like terms are in the expression? 14x-14y+7-x+z+2x
The number of like terms in the given expression are:
3
( 14x , -x and 2x)
Step-by-step explanation:Like terms--
The like terms are the terms which have the same variables with the same power.The coefficients of such terms may vary.
The expression is given by:
14x-14y+7-x+z+2x
There are total 6 terms in given expression.
The number of terms with variable x are: 3 i.e. 14x , -x and 2x
The number of terms with the variable y is: 1 i.e. -14y
The number of terms with variable z is: 1 i.e. z
and the number of constant term is: 1 i.e. 7
Hence, the number of like terms are: 3
A plant manager needs 75 sq. yds. of fabric and the fabric is only 32 in. wide. How many linear feet must she make to produce 75 sq. yds.?
A) 1.23
B) 4.56
C) 66.67
D) 253.12
Which is NOT a factor pair for 60?
A) (2, 30)
B) (3, 20)
C) (4, 12)
D) (6, 10)
f(x) = -1/3 x + 7 determine the input that would give an output value of 2/3
Answer:
The correct answer is (19).
Step-by-step explanation:
Which equation can be used to find one of the missing side lengths in the triangle?
((Use the graph shown below to fill in the blank.))
If (4, y) is an ordered pair of the function, then y = a0.
The answer Y=1
:) hope this helps
Mrs. smith's reading class can read a mean of 175 words per minute with a standard deviation of 20 words per minute. the top 3% of the class is to receive a special award. assuming that the distribution of words read per minute are normally distributed, what is the minimum number of words per minute a student would have to read in order to get the award?
If Mrs. smith's reading class can read a mean of 175 words per minute with a standard deviation of 20 words per minute. The top 3% of the class is to receive a special award. The minimum number of words per minute a student would have to read in order to get the award will be: 213 words per minute
Using this formula
Minimum number of words =(z score× standard deviation) + means
Where:
z score=(100%-3%=97%)
z score= 97%=1.881
Standard deviation=175
Mean=20
Let plug in the formula
Minimum number of words =(1.881×20) + 175
Minimum number of words =37.62+175
Minimum number of words =212.62
Minimum number of words =213 (Approximately)
Inconclusion if Mrs. smith's reading class can read a mean of 175 words per minute with a standard deviation of 20 words per minute. The top 3% of the class is to receive a special award. The minimum number of words per minute a student would have to read in order to get the award will be: 213 words per minute
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Does this graph represent a function? why or why not ?
A right triangle has a leg measuring 52 m and a hypotenuse measuring 63 m. find the length of the other leg.
The first three terms of a geometric sequence are as follows.
32, 16, 8
Find the next two terms of this sequence.
a class has 27 students.15 are boys the rest are girls. what is the ratio of girls to total students?
I’m needin sum help.-.
y = 4x+4
give x a number that is on the X axis line to make it a little easier
so lets say x = 2
replace x in the equation with 2
y = 4(2) +4
so y = 8+4 =12
s0 put a dot where x is 4 and y is 12
do the same thing with another number then draw a straight line through both those points
The value of y when x is 3 in the equation "y = 4x + 4" is 16. This linear relationship reflects a consistent rate of change, with each unit increase in x corresponding to a 4-unit increase in y.
In the equation "y = 4x + 4," to find the value of y when x is 3, we substitute x with 3:
y = 4(3) + 4
y = 12 + 4
y = 16
Therefore, when x is 3, y is 16. This means the point on the graph is (3, 16). The equation represents a linear relationship where y depends on x with a constant rate of change of 4. For every 1-unit increase in x, y increases by 4 units due to the coefficient of x.
In summary, for the given equation "y = 4x + 4," when x is 3, y is 16. This relationship indicates a straight line with a slope of 4 and a y-intercept of 4.
The question probable may be;
Given the equation y = 4x + 4 find the value of y when x = 3.
which graph shows the inequality y<2
Write each equation in slope-intercept form of the equation of a line. Underline the slope and circle the y-intercept in each equation.
a) 3x+4y–12=0
b) 2x+y=1
Answer:
Step-by-step explanation:
Slope-intercept form of the equation is y = mx + c
Where m = slope of the line
c = y- intercept
a). 3x + 4y - 12 = 0 [Standard form of the equation of a line]
4y + 3x = 12
4y = 12 - 3x
[tex]y=\frac{1}{4}(-3x+12)[/tex]
[tex]y=-\frac{3x}{4}+\frac{12}{4}[/tex]
[tex]y=-\frac{3x}{4}+3[/tex]
Here slope of the line is [tex]-\frac{3}{4}[/tex] and y-intercept is 3.
b). 2x + y = 1
y = -2x + 1
Slope of the line is -2 and y intercept is 1
The basket of golf balls at a miniature golf course contains 18 golf balls, of which 9 are red. What is the probability that a randomly selected golf ball will be red?
Final answer:
The probability that a randomly selected golf ball will be red from a basket of 18 balls, with 9 red, is 1/2 or 50%.
Explanation:
The question is asking about the probability of selecting a red golf ball from a basket that contains 18 golf balls, with 9 of them being red. To find this probability, we divide the number of red golf balls by the total number of golf balls.
Here is the calculation:
Number of red golf balls: 9
Total number of golf balls: 18
Probability (P) of selecting a red golf ball: P = Number of red golf balls / Total number of golf balls
P = 9 / 18
P = 1/2 or 0.5 or 50%
Therefore, the probability that a randomly selected golf ball will be red is 1/2, which can also be expressed as 0.5 or 50%.
The equation K = mv2 represents the energy an object has based on its motion. The kinetic energy, K, is based on the mass of the object, m, and the velocity of the object, v. Lashandra is given K and v for 10 different objects. In order to make solving more efficient, she solves the equation for m : m = . After attempting to determine the mass of a few objects, Lashandra realizes there must be something wrong with her formula. What is Lashandra’s error? She should have multiplied by 2 instead of dividing by 2. She should have multiplied by instead of dividing by 2. She should have used the square root to move the squared term to the other side of the equation. She should have squared the K when moving the v2 to the other side of the equation.
Answer:
She should have multiplied by 2 instead of dividing by 2.
Step-by-step explanation:
Note: The given equation is incorrect and second equation is missing.
Consider the given equation is
[tex]k=\dfrac{1}{2}mv^2[/tex] ...(i)
The formula find by Lashandra is
[tex]m=\dfrac{k}{2v^2}[/tex]
We need to find the Lashandra’s error.
Multiply both sides by 2 in equation (i).
[tex]2k=mv^2[/tex]
Divide both sides by [tex]v^2[/tex].
[tex]\dfrac{2k}{v^2}=m[/tex]
It means, the formula find by Lashandra is incorrect. She should have multiplied by 2 instead of dividing by 2.
Answer:
a
Step-by-step explanation:
2021 edg
Jaimie swims 12 the length of the swimming pool every 14 of a minute. Enter the number of lengths of the swimming pool Jaimie swims per minute.
These are the first sentences in the short story, "The Gift of the Magi," by O. Henry: "One dollar and eighty-seven cents. That was all. And sixty cents of it was in pennies." Model the scenario with an equation. Let q be the number of quarters, d be the number of dimes, and n be the number of nickels.
The model which represents the total amount in terms of pennies, quarters, dimes and nickel is 0.25q + 0.10d + 0.05n + 0.60
Total amount = $1 and 87 cents = $1.87Amount in pennies = 60 cents = $0.60Number of Quarters, Nickel and Dimes = q, n and d respectively 1 quarter = $0.25 ; 1 dime = $0.10 ; 1 nickel = $0.05To create a mathematical model of the total amount :
Total worth of Quarters = 0.25qTotal worth of dimes = 0.10dTotal worth of nickel = 0.05nTotal worth of pennies = $0.60Total amount = 0.25q + 0.10d + 0.05n + 0.600.25q + 0.10d + 0.05n + 0.60 = 1.87Therefore, the model which represents the total amount is 0.25q + 0.10d + 0.05n + 0.60
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