The 4th one is the answer i did this earlier
Needs help with 8th grade maths.
For what value of k will the following linear system have infinitely many solutions?
2a+b=-6, 6a+kb=-18
There are infinitely many solutions to a linear equation with the same variable term on both sides of the equation.
We have to find the coefficient of "b"
from first equation:
2a + b = -6b = -6 - 2afrom second equation:
6a + kb = -18b = (-18 - 6a)/ksolve them simultaneously:
(-18 - 6a)/k = -6 - 2a(-18 - 6a)/(-6 - 2a) = kk = 3For each function below, find its domain and then determine if the function increasing, decreasing, or constant on each piece of the domain. Sometimes the domain is just one interval, but the function still changes its behavior at some points. s(t)=[tex]\frac{-5}{|t|}[/tex]
The interval on which the function is decreasing is : ( , )
The interval on which the function is increasing is : ( , )
The interval on which the function is constant is : ( , )
Leave unused fields blank.
Answer and explanation:
First, the domain is all real numbers except 0, since x = 0 is the asymptote.
D: x ∊ R, x ≠ 0
or
D: (-∞, 0) ∪ (0, ∞)
The range is everything below y = 0.
R: y < 0
or
R: (0, -∞)
Next, this function is never constant so there are only intervals of increasing and decreasing. The intervals meet at x = 0.
inc: x > 0
dec: x < 9
or
inc: (0, ∞)
dec: (0, -∞)
PLEAS HELP ASAP ILL GIVE BRAINLIEST IF CORRECT
∆ABC is transformed to ∆DBE
(a) which rigid transformation can be used to map ∆ABC on to ∆DBE
(b) What is true about the corresponding sides and angles of the image and the preimage? Explain.
(c) Identify the corresponding sides and angles of the image and the preimage
Use rotation, and the angles and side lengths remain the same.
ACB=BED
BAC=BDE
ABC=EBD
AC=ED
AB=BD
BE=CB
Rotation rigid transformation can be used to map triangle ABC on to triangle DBE.
The angles ACB, BAC, ABC of given image are equals to the angles of preimage BED, BDE and EBD respectively. That is
ACB=BED
BAC=BDE, and
ABC=EBD
Also the sides AC, AB, and BE of the given image are equals to the sides of preimage ED, BD, and CB respectively. That is
AC=ED
AB=BD, and
BE=CB
The corresponding sides are
AC and DE
AB and BD
CB and EB
And the corresponding angles are
∠ACB and ∠BED
∠ABC and ∠EBD
∠CAB and ∠EDB
What is rigid transformation?A rigid transformation or an isometry is a transformation that does not change the sides and angle of plane figures.
What are the three types of rigid transformation?The three types of rigid transformation are:
1) Translation
2) Reflection
3) Rotation
According to the given question.
Triangle ABC is transformed to triangle DBE.
(a) Rotation rigid transformation can be used to map triangle ABC on to triangle DBE. If we rotate triangle ABC at 180 in clockwise direction the triangle ABC maps on to triangle DBE. ( A rotation is followed by another rotation).
(b) The angles ACB, BAC, ABC of given image are equals to the angles of preimage BED, BDE and EBD respectively. That is
ACB=BED
BAC=BDE, and
ABC=EBD
Also the sides AC, AB, and BE of the given image are equals to the sides of preimage ED, BD, and CB respectively. That is
AC=ED
AB=BD, and
BE=CB
(c) The corresponding sides are
AC and DE
AB and BD
CB and EB
And the corresponding angles are
∠ACB and ∠BED
∠ABC and ∠EBD
∠CAB and ∠EDB
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Please help, Good 15 pt reward.
Answer:
how is annyone going to know that?
Step-by-step explanation:
Answer:
P ≈ 25 units
Step-by-step explanation:
LM = 12 units ( horizontal line )
use the distance formula to find length of other 2 sides.
d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]
with (x₁, y₁ ) = L (- 3, 2) and (x₂, y₂ ) = M (3, 5 )
LM = [tex]\sqrt{3-(-3))^2+(5-2)^2}[/tex]
= [tex]\sqrt{(3+3)^2+3^2}[/tex]
= [tex]\sqrt{6^2+9}[/tex]
= [tex]\sqrt{36+9}[/tex]
= [tex]\sqrt{45}[/tex]
Repeat with (x₁, y₁ ) = M (3, 5) and (x₂, y₂ ) = N (9, 2)
MN = [tex]\sqrt{(9-3)^2+(2-5)^2}[/tex]
= [tex]\sqrt{6^2+(-3)^2}[/tex]
= [tex]\sqrt{36+9}[/tex]
= [tex]\sqrt{45}[/tex]
Then perimeter P is the sum of the 3 sides
P = 12 + [tex]\sqrt{45}[/tex] + [tex]\sqrt{45}[/tex] = 12 + 2[tex]\sqrt{45}[/tex] ≈ 25 units ( to the nearest unit )
Mr. Monroe records how long he practices his guitar every day for two weeks. He organizes the data using a frequency table. Which statement describes the data distribution?
Answer:
a
Step-by-step explanation:
According to the line plot, how many apples weigh 5/8 of a pound?
5 apples
2 apples
4 apples
3 apples
Answer:
4
Step-by-step explanation:
If you count the X's you should count 4 X's so 4 apples weigh 5/8 pounds
(06.04 LC)
What is the slope of a line of best fit if its equation is y = −2x + 3?
−2
Negative 1 over 2
1 over 3
3
Answer:
Option (d) is correct.
Slope of given line y = 5x -4 is 5
Step-by-step explanation:
Given equation of line as y = 5x - 4
We have to find the slope of given line.
For the general equation of line y = mx + c , where m is the slope of line and c is the y- intercept.
Slope of line is given by derivative the equation of line with respect to x, that is
Consider the given equation y = 5x - 4
then slope is
Thus, slope of liven line is 5 .
Also, by comparing the given equation with general equation the slope of line is 5 .
Thus, option (d) is correct.
Step-by-step explanation:
2 different questions 2 different answers I’ll give 20 points for whoever answers both right
Janine has 10 pieces of ribbon. She recorded the length of each piece in the line plot below. What is the total length of the four longest pieces of ribbon?
Answer:
44 inches
Step-by-step explanation:
i hope this heped
Need help asap! Max points
Multiply each coordinate with scale factor
A'=(12/6,0/6)=(2,0)B'=(18/6,6/6)=(3,1)C'=(6/6,12/6)=(1,2)Option D
Please help! Due tonight thank you!
Answer:
216 cm squared
Step-by-step explanation:
Bottom: a single 6*6=36
4 sides: 6*5=30 each
Triangles 6 by 5. the formula for a triangle means that 2 of the triangles equals a square
6*5*2=60
36+120+60=216 cm squared
Describe how the data is dispersed in a box plot with the following data set: 25, 36, 21, 30, 20, 32, 38, 19, 36, 31, 26, 33, 27, 18, 24.
The data is dispersed in a box plot with the data set: 25, 36, 21, 30, 20, 32, 38, 19, 36, 31, 26, 33, 27, 18, 24 is shown in the image attached.
What is the box plotTo create a box plot for the given data set:
25, 36, 21, 30, 20, 32, 38, 19, 36, 31, 26, 33, 27, 18, and 24
One first need to look for some key statistics that will help one make the plot and they are
Minimum value in the data set.First quartile (Q1)Median (Q2)Third quartile (Q3)Maximum value in the data set.So first sort the data in ascending order:
18, 19, 20, 21, 24, 25, 26, 27, 30, 31, 32, 33, 36, 36, 38Minimum: 18 First quartile (Q1): 21.Median (Q2): 27.Third quartile (Q3): 33.Maximum: 38.The lines coming out from the box (whiskers) show the smallest and largest values that are within a certain range around the middle of the data. Any data points that are different from the others and fall outside a certain range are called outliers. These outliers are shown separately on a graph.
The box plot shows us how the data is spread out and gives us information about the average value and any very high or very low values.
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A 1,500 year old sequoia tree measures 1,980 ÷ 10 feet tall. How tall is the tree?
Answer:
198 ft
Step-by-step explanation:
say ty tp my cat
^-^
help helphelp helpe hwlp hwlp
Answer:
0.6
Step-by-step explanation:
You count how many pieces there are in total, and then you subtract the blue pieces from the total which is 3. Then you need to convert 5/8 into a decimal.
A bowl contains candies of the same size in three flavors: orange, strawberry, and pineapple. If the probability of randomly pulling out an orange candy is 2/8, and the probability of randomly pulling out a strawberry candy is 3/8, what is the probability of randomly pulling out a pineapple candy?
A. 3/8
B. 2/8
C. 5/8
D. 6/8
Answer:
A.3/8
Hoped this helped
Tell whether the triangle with the given side lengths is a right triangle. Justify your answer.
81 m, 91 m, 98 m
Answer:
The triangle specified is not a right triangle.
Step-by-step explanation:
The angles of a right triangle will always add up to 180 degrees. The angles specified add up to 270 degrees.
There will also always be a 90 degree angle which makes up the right angle.
Since there will always be a 90 degree angle, the other angles will have to add up to 90.
Answer:
No, it isn't.
Step-by-step explanation:
The Pythagorean theorem doesn't work here.
Stella graphs the equation y=13x – 2 . Which statement about Stella's graph is true? The slope is -2 and the y-intercept is 1/3. The slope is -2/3. The slope is 3 and the y-intercept is 2. The slope is 1/3 and the y-intercept is -2.
Answer:
The slope is 13 and the y-intercept is -2
Step-by-step explanation:
y=13x-2
y=mx+b
the slope is the value in front of x : m: 13
the y-intercept is b, which is -2
The equation of the line is written in Slope-Intercept Form (y=mx+b, where m -> slope & b -> y-intercept)
So all we have to do is look at the equation.
The equation is:-
[tex]\sf{y=\displaystyle\frac{1}{3}}x-2}[/tex]
Notice that the slope is the coefficient of x, and the y-intercept is a constant.
Hence, the slope of the line is:-
[tex]\sf{\displaystyle\frac{1}{3}}[/tex]
And the y-intercept is:-
[tex]\bold{-2}[/tex]
[tex]\boxed{\boxed{\bold{Option~D~is~correct}}}[/tex]
note:-Hope everything is clear; if you need any explanation/clarification, kindly let me know, and I will comment and/or edit my answer :)
can someone help me plsease
Answer:
You must be in 8th grade?
Step-by-step explanation:
For the first one I don't know.
The second one I'm also not sure about.
The third one, the answer is 225 because you will divided 150 by 2 and get the answer of 75 and then multiply 75 by 3 to get the answer of 225.
For the fourth one, you will multiply 5 x 2.5 = 12.5 then you will multiply 12.5 x 20 = 250yd^2.
For the last one you will multiply 2.25 x 22 = 49.5 miles.
Jada is making a scale model of the solar system. The distance from Earth to the moon
is about 2.389 × 105 miles. The distance from Earth to the sun is about 9.296x 107
miles. She decides to put Earth on one corner of her dresser and the moon on another
corner, about a foot away. Where should she put the sun?
Answer:
she should put the sun 2.8 miles away
Step-by-step explanation:
had this question and got it right.
A parachutist's rate during a free fall reaches 162 kilometers per hour. What is this rate in meters per second? At this rate, how many meters will the parachutist fall during 10 seconds of free fall? Do not round your answers.
rate: (m/s)
distance fallen in 10 seconds:
Step-by-step explanation:
162 kilometers = 162000 meters
1 hour = 3600 seconds.
162,000 meters/3600 seconds=45 meters/second=45 m/s
45*10=450
Joanna draws a scale model of a rectangular table for a carpenter to build. On her drawing, \frac{3}{4}
4
3
of an inch represents 11 foot. In the drawing, the table is 7\frac{1}{2}7
2
1
long.
How long, in feet, will the table be when the carpenter builds it?
Using proportions, it is found that the table will be 110 feet long when the carpenter builds it.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In the drawing, 0.75 inches represent 11 feet. The drawing is of 7.5 inches, and the real dimension is of d, hence the rule of three is given by:
0.75 inches - 11 feet.
7.5 inches - d feet
Applying cross multiplication:
0.75d = 7.5 x 11
d = 7.5 x 11/0.75
d = 110.
The table will be 110 feet long when the carpenter builds it.
More can be learned about proportions at https://brainly.com/question/24372153
The scale model of the table would ensure that the actual table is bigger than the scale model
The length of the table would be 110 feet
How to determine the table length?The scale model is given as:
Ratio = Scale : Actual
So, we have:
Ratio = 3/4 inches : 11 feet
For a table of 7 1/2 inches, we have the following ratio
Ratio = 7 1/2 inches : Actual
Equate both ratios
7 1/2 inches : Actual = 3/4 inches : 11 feet
Express as decimals
7.5 inches : Actual = 0.75 inches : 11 feet
Rewrite as:
7.5 : Actual = 0.75 : 11 feet
Express as fraction
Actual/7.5 = 11 feet/0.75
Multiply both sides by 7.5
Actual = 7.5 * 11 feet/0.75
So, we have:
Actual = 110 feet
Hence, the length of the table would be 110 feet
Read more about ratios at:
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PLEASE HELP, WILL GIVE BRAINLIEST!!
Explanation:
A diameter is a special type of chord that passes through the center of the circle.
A chord is any segment where both endpoints are on the edge of a circle.
Any diameter is a chord, but not the other way around. See the example below.
Please answer this math problem sceenshot below
Answer:
3 and 4 it is 60
is the answer
if you like my answer please like comment and mark me as brilliant
negative fractions on the number line
The point marked on the number line is -3 1/4.
What is Number Line?A number line is a straight line drawn horizontally where the numbers are placed at an equal intervals.
Given is a number line.
A point is marked in between -3 and -4.
In between -3 and -4, the region is equally spaced in to 4 parts.
The point is market at 1/4 distance from -3.
So the point can be written as -3 1/4.
In the decimal form, it is -3.25.
Hence the marked point is -3 1/4.
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What point is marked on the number line?
Answer:
Step-by-step explanation:
-7/8
Need help Giving crown
Answer:
BBB L U E is showing where some parts are and possible corridnates
Step-by-step explanation:
What's 4^5 + 72/9 - 43
Now wassup?
The answer is 989
Hope it helps :)
Hey there!
4^5 + 72/9 - 43
= 4 * 4 * 4 * 4 * 4 + 72/9 - 43
= 16 * 16 * 4 + 72/9 - 43
= 256 * 4 + 72/9 - 43
= 1,024 + 72/9 - 43
= 1,024 + 8 - 43
= 1,032 - 43
= 989
Therefore, your answer is: 989
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Dave and Faye were comparing their Halloween candy.Dave received 3 times as much candy as Faye received. Dave hen split his candy evenly into 9 piles to eat later.If Faye received 18 ounces of candy how many ounces of candy would be in each of Dave's piles?
Answer:
each of his piles are 6 ounces each
Step-by-step explanation:
first, I multiplied rayes amount by 3 (18x3) because it said he got 3 time as much as he then with that answer I divided it by nine because they also said that he was able to split his pile up into nine equal piles.(54/9=6)
Lilia uses craft stickers to make stars for an art project. She uses 5 craft stickers for each star, and she has 19 craft sticks. Lilia makes as many stars as she can. How many stars does she make?
Answer:
The maximum Number of stars she could make is the whole number value (discarding the remainder) = 3
Step-by-step explanation:
if this helps mark brainllest
Answer:
3
Step-by-step explanation:
19 = 5 + 5 + 5 + 4
1 sticker, 5 stars
3 stickers, 15 stars.
thanks I hope this is helpful
mark me as a brainlest you get 3 points!