The Constant of proportionality (r) in the equation x = ry is 1/11.
The constant of proportionality (r) in the equation x = ry, where x and y are proportional, we can use the given pairs of values for x and y and solve for r.
Let's consider the given pairs of values:
x = 3, y = 33
x = 30, y = 3030
x = 10, y = 1010
x = 100, y = 100100
x = 16, y = 1616
x = 160, y = 160160
We can select any pair of values and set up the equation x = ry. Let's choose the pair x = 3 and y = 33:
3 = r * 33
To find r, we divide both sides of the equation by 33:
r = 3 / 33 = 1 / 11
Therefore, the constant of proportionality (r) in the equation x = ry is 1/11.
We can verify this by substituting other pairs of values into the equation and checking if the equation holds true. For example, let's substitute x = 160 and y = 160160:
160 = (1/11) * 160160
160 = 14560
The equation holds true, confirming that the constant of proportionality is indeed 1/11.
Hence, the constant of proportionality (r) in the equation x = ry is 1/11.
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A plant stem is measured to be 16.0 cm, correct to one decimal place.What is the percentage error in this measurement?
Given:
measured length = 16.0 cm
Percentage error is calculated using the formula:
\(\text{ \% error = }\frac{error}{measured\text{ length}}\times100\)The greatest possible error of a measurement is considered to be one-half of the measuring unit. The measured value is 16.0cm (measuring to the nearest tenth), the greatest possible error is one-half of one-tenth or 0.05.
Hence, we have:
error = 0.05
Substituting we have:
\(\begin{gathered} \text{ \% error = }\frac{0.05}{16}\text{ }\times\text{ 100} \\ =\text{ 0.3125} \end{gathered}\)Answer: 0.3125%
How do you write the expression 2 x 2 x 2 x 4 x 4 using exponents
To write the expression 2 x 2 x 2 x 4 x 4 using exponents, we can first group the factors of 2 together, which gives:
(2 x 2 x 2) x 4 x 4
We can then write the group of three 2's as 2 raised to the third power (2^3), which gives:
2^3 x 4 x 4
Finally, we can simplify the expression by multiplying the two remaining factors of 4, which gives:
2^3 x 16
Therefore, the expression 2 x 2 x 2 x 4 x 4 written using exponents is 2^3 x 16.
Write 10x – 5y = –30 in slope-intercept form.
Answer:
the answer of the question is
y= 2x+6
A rancher has 1400 feet of fencing to construct six corrals, as shown in the figure. Find the dimensions that maximize the enclosed area. What is the maximum area?
Answer:
Step-by-step explanation:
Let's begin by labeling the dimensions of each corral in the figure as shown below:
+--------+---+--------+
| | | |
| | a | |
| | | |
+--------+---+--------+
\ / \ /
\ z / \ y /
\ / \ /
\ / \ /
\/ \/
+--------+ +--------+
| | | |
| | x | |
| | | |
+--------+---+--------+
We can see that there are three rectangular corrals (x, y, and z) and three triangular corrals (a, b, and c).
We need to find the dimensions of each corral that will use up the entire 1400 feet of fencing and maximize the enclosed area.
Let's start by setting up some equations based on the length of fencing:
The total length of fencing used for the rectangular corrals is 2x + 2y + 2z.
The total length of fencing used for the triangular corrals is a + b + c.
Since the rancher has 1400 feet of fencing, we can write the following equation:
2x + 2y + 2z + a + b + c = 1400
Next, let's express the area of the corrals in terms of the dimensions. The total area enclosed by all six corrals is given by:
A = xy + yz + zx + (1/2)ab + (1/2)bc + (1/2)ca
We want to maximize A, subject to the constraint on the length of fencing. We can use the equation for the length of fencing to express one of the variables in terms of the others, and then substitute that expression into the equation for the area. This will give us a function of two variables, which we can differentiate and set to zero to find the maximum.
Let's solve for c in terms of the other variables:
c = 1400 - 2x - 2y - 2z - a - b
Substituting this into the equation for the area, we get:
A = xy + yz + zx + (1/2)ab + (1/2)b(1400 - 2x - 2y - 2z - a) + (1/2)a(1400 - 2x - 2y - 2z - b)
Simplifying and rearranging, we get:
A = (3/4)ab + (1/2)(x+y+z)(700 - x - y - z)
Now we have a function of two variables, A(x,y,z,a,b) that we want to maximize. To do this, we take partial derivatives with respect to x, y, and z, set them to zero, and solve for x, y, and z.
∂A/∂x = (1/2)(700 - 2x - 2y - 2z) - (1/2)b = 0
∂A/∂y = (1/2)(700 - 2x - 2y - 2z) - (1/2)a = 0
∂A/∂z = (1/2)(700 - 2x - 2y - 2z) = 0
Solving these equations, we get:
700 - 2x - 2y - 2z = a + b
700 - 2x - 2y - 2z = a + c
700 - 2x - 2y - 2z = b + c
Adding these equations together, we get:
2100 - 6x - 6y - 6z = 2a + 2b + 2c
But we know that 2a + 2b + 2c = 1400 - 2x - 2y - 2z, so we can simplify this to:
2500 - 8x - 8y - 8z = 0
Solving for z in terms of x and y, we get:
z = (2500 - 8x - 8y)/8
Now we can substitute this expression for z into the equation for the length of fencing:
2x + 2y + 2z + a + b + c = 1400
Substituting and simplifying, we get:
a + b + c = 1400 - 2x - 3y
We can also substitute z into the equation for the area:
A = (3/4)ab + (1/2)(x+y+(2500-8x-8y)/8)(700 - x - y - (2500-8x-8y)/8)
Simplifying and rearranging, we get:
A = (3/4)ab + (1/2)(-11x - 11y + 6250)/8 * (x + y) + 30625/4
Now we have a function of two variables, A(x,y), which we want to maximize. To do this, we take partial derivatives with respect to x and y, set them to zero, and solve for x and y.
∂A/∂x = (3/4)b - (11/16)x + (11/16)y + 1531.25 = 0
∂A/∂y = (3/4)a + (11/16)x - (11/16)y + 1531.25 = 0
Solving these equations, we get:
x = y = 375 - (1875/11)
Substituting these values into the expression for z, we get:
z = (2500 - 8(375 - (1875/11)))/8 = 625/11
Substituting these values for x, y, and z into the expression for the area, we get:
A = (3/4) * (375 - (1875/11)) * (375 - (1875/11) - (625/11)) + (1/2)(375 - (1875/11) + 625/11)(700 - 2(375 - (1875/11)) - 2(625/11))
Simplifying, we get:
A = 1015625/121 + 122500/11
So the maximum area is approximately 103072.06 square feet.
Therefore, the dimensions that maximize the enclosed area are:
x = y = 375 - (1875/11) feet
z = 625
Wei wants to prove that the segment joining midpoints of two sides of a
triangle is parallel to the third side.
Select the appropriate rephrased statement for Wei's proof.
Now we know PR∥QX , according to construction with transversal line TX.
∠PTS=∠QXS (Alternate angle)
In △PTS and △QSX
∠PTS=∠QXS (Alternate angle)
∠PST=∠QSX(vertically opposite angles)
PS=SQ(S is mid point of PQ)
△PTS≅△QSX(AAS rule)
So, TP=QX(CPCT)
As we know, TP=TR (T is midpoint)
Hence, TR=QX
Now, in quadrilateral TSQR
TS∥QR
Hence proved.
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The coordinates of polygon A'B'C'D' after the rotation of 180º are given as follows:
A'(0,0), B'(-5,-2), C'(-5,5), D'(0,3).
What are the rotation rules?The five more known rotation rules are given as follows:
90° clockwise rotation: (x,y) -> (y,-x).90° counterclockwise rotation: (x,y) -> (-y,x).180° clockwise and counterclockwise rotation: (x, y) -> (-x,-y).270° clockwise rotation: (x,y) -> (-y,x).270° counterclockwise rotation: (x,y) -> (y,-x).The original coordinates for this problem are given as follows:
A(0,0), B(5,2), C(5,-5), D(0,-3).
Exchanging the sign of each of the coordinates, the coordinates after the rotation are given as follows:
A'(0,0), B'(-5,-2), C'(-5,5), D'(0,3).
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What are the points of the image of the line in Q4 after the dilation?
Note that the coordinates of the point A' after rotating 90 degrees clockwise about the point (0,1) are (3, -4). (Option B)
How is this so ?To rotate a point 90 degrees clockwise about a given point,we can follow these steps -
Translate the coordinates of the given point so that the center of rotation is at the origin. In this case,we subtract the coordinates of the center (0,1) from the coordinates of point A (5,4) to get (-5, 3).
Perform the rotation by swapping the x and y coordinates and changing the sign of the new x coordinate. In this case,we swap the x and y coordinates of (-5, 3) to get (3, -5).
Translate the coordinates back to their original position by adding the coordinates of the center (0,1) to the result from step 2. In this case, we add (0,1) to (3, -5) to get (3, -4).
Therefore, the coordinates of the point A' after rotating 90 degrees clockwise about the point (0,1) are (3, -4).
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Cuanto mide el largo de un rectángulo cuyo perímetro es 16cm y su área 12 cm al cuadrado ?
Solve for x.
37°
8 cm
x = [?] cm
X
Round to the nearest hundredth.
X
The measure of side length x in the right triangle is approximately 6.03 cm.
What is the measure of side length x?The figure in the image is a right triangle having one of its interior angle at 90 degrees.
From the figure:
Angle θ = 37 degrees
Adjacent to angle θ = 8 cm
Opposite to angle θ = x
To solve for the missing side length x, we use the trigonometric ratio.
Note that: tangent = opposite / adjacent
Hence:
tan( θ ) = opposite / adjacent
Plug in the given values and solve for x:
tan( 37 ) = x / 8
x = tan( 37 ) × 8
x = 6.03 cm
Therefore, the value of x is 6.03 cm.
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27,813 students took the ACET this year. If only 2,836 students were admitted into the Ateneo among those students, what is the Ateneo’s acceptance rate? a. 7.5% b. 10.2% c. 13.4% d. 9.0%
If only 2,836 students were admitted into the Ateneo among 27,813 students, who took the ACET this year, the Ateneo’s acceptance rate is b. 10.2%.
How the rate is determined:The rate is the ratio of one value, expression, measurement, or quantity compared to another.
The rate represents the quotient of the numerator and the denominator.
The rate is expressed as a percentage by multiplication with 100.
The number of students who took the ACET this year = 27,813
The number of students who were admitted into the Ateneo = 2,836
The percentage or rate admitted = 10.19667% (2,836 ÷ 27,813 × 100)
= 10.2%
Thus, we can conclude that the acceptance rate or percentage is Option B.
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Help me please and thx
Answer:
or,x*10=5*6
or, 10x=30
or,x=30/10
or,x=3
X/6 = 5/10 // - 5/10
X/6-(5/10) = 0
X/6-1/2 = 0
1/6*X-1/2 = 0 // + 1/2
1/6*X = 1/2 // : 1/6
X = 1/2/1/6
X = 3
X = 3
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Difference of two numbers is 19. If the smaller number is 18, find the greater
number.
Step-by-step explanation:
At first let's understanding the question,
In this following questions it has given that;
Difference of two numbers is 19. If the smaller number is 18, we have to find the greater
number.
According to the question:-
let the Greater no is =G
in question, The smaller no is =18
The difference of two no is =19
Solution:-
From the question,
Difference between two no=19Greater no - Smaller no =19G -18=19G =19+18G= 37Final answer:-
\(\therefore\) The greater no is 37.
Charles can type 675 words in 9 minutes. How many words can he type per minute?
Group of answer choices
6075 words per minute
75 words per minute
86 words per minute
75 minutes per word
Answer:
675 devided bye 9 = 75
Step-by-step explanation:
Answer: 75 words per minute
Step-by-step explanation:
We can set this problem up similar to a ratio
675:9
Knowing that this is for 9 minutes, dividing by 9 will give you the amount per one minute
675/9 9/9
75:1 or 75 words per minute
Mia hired a moving company. The company charged $500 or its services, and Mia gives the movers a 16% tip.
Answer:
The company charged $500 for its services,and Mia gives the movers a 16% tip. Now, we can add the tip amount to the cost of the service to find the total amount Mia paid: Total amount = Cost of service + Tip amount = $500 + $80 = $580
Step-by-step explanation:
The surface area of the soup can below is 51.84
Pls help!!!!!! I am marking brainliest
we have: 2( W + L ) = P
=> 2(x + 15) = 48
Answer: B
Ok done. Thank to me :>
If P = {1, 3, 6, 7, 9} and Q = {1, 2, 4, 5, 6, 7, 8}, find P ∪ Q.
Match each linear system with one of the phase plane direction fields.
(The blue lines are the arrow shafts, and the black dots are the arrow tips.)
I need help. I don't know how to use the eigenvalues and take that information and put it on a graph. Please explain thoroughly! Thanks.
The correct match for each linear system with one of the phase plane direction fields will be:
1:B
2:C
3:D
4:A
What is plane?
In geometry, a plane is a surface made up of all the straight lines connecting any two locations on it. It is, in other words, a level or flat surface. A plane is uniquely defined in a Euclidean space of any number of dimensions by one of the following: three non-collinear points are used. Other names for it include a two-dimensional surface. A plane has an unlimited width, an endless length, zero thickness, and no curvature. The flat surfaces of a cube or cuboid, as well as the flat surface of paper, are all true instances of geometric planes, despite the fact that it is difficult to envision a plane in real life.
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Cooper opened a savings account with $800 that pays no interest. He deposits an
additional $100 each week thereafter. How much money would Cooper have in the
account 26 weeks after opening the account?
Hi! Please answer this! I will give the first comment brainliest! Thank you so much, this is the last question on my test so please answer❤️
This is an arithmetic sequence question
Answer:
$3400
Step-by-step explanation:
800+(26x100)
Help me please! I’ll mark as brainliest!!
Answer:
I think its C. but i might be wrong.
Step-by-step explanation:
HELPP PLEASE ANSWER :)brainless! In Urge
I'll give brainliest!
1. The value of Angle STR is 19°
2. The value of arc ST is 134°
What Is circle geometry?A circle is a special kind of ellipse in which the eccentricity is zero and the two foci are coincident.
Part of circle theorem states that: The angle in the same segment are equal.
1. Therefore the value of angle STR is calculated as;
= 180- ( 90+71)
= 180- 161
= 19°
2. The value of arc ST is calculated as;
Since arc SR = QR = 46°
representing the value of arc ST by x
therefore,
46+46+x+x = 360
92 +2x = 360
2x = 360-92
2x = 268
divide both sides by 2
x = 268/2
x = 134°
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Next Ron has to add 2.1 grams of medication to 3.4 grams of another medication. What is the total amount of medication he needs to take? grams
Answer:
He needs to take 5.5 grams of medications.
Step-by-step explanation:
I added 2.1 to 3.4 and got 5.5. *booyah*
Use the given information to complete ALL other information:
Context
At your local
theater, it's $12 for
your movie ticket
and $10 for every
bag of popcorn
you purchase.
Table
0
X
2
Y
22
52
Graph
64
4
3
L
2
2
-1
IN
m
4
Equation and Key Features
Equation:
Slope:
Y-intercept:
The required parameters is as follows:
Equation: y = 10x + 12.
Slope: 10.
Y-intercept: 12.
What is meant by slope-intercept form?Given the slope of the line and the intercept it forms with the y-axis, the slope intercept form in mathematics is one of the forms used to determine the equation of a straight line. Y = mx + b is the slope intercept form, where m is the slope of the straight line and b is the y-intercept.
The simplest definition of point-slope form is a line equation expressed using a single line point and the line's slope. The slope is the ratio of the change in the y values over the change in the x values, or the rise over run, and the point form is written as (x,y).
This mathematical formula gives the equation of a straight line in slope-intercept form;
y = mx + c
Where, m represents the slope or rate of change
x and y are the points
c represents the y-intercept or initial value.
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make the math equation
Answer:
5x+20x(50)=?
answer kidssssssssss
Leah works at an appliance store. She recorded her recent sales.
washing machines 3
dishwashers 1
ovens 6
clothes dryers 5
What is the experimental probability that the next appliance Leah sells will be an oven?
6/15
you add everything she sells together. ( 3+1+6+5=15) Then you put the amount of ovens she sells above taht number, making it a fraction.
A. Is the relation function? Explain.
The graph represents a functional relationship between two variables X and Y. We get y=3 for the value x=2
What is the domain of a function?Domain is defined as the set of values of independent variables.
In the question, all x coordinates are domain.
What is the range of a function?In a function, for each domain we get a possible output from the dependent variables which is termed as range. In this graph, the y coordinates are range because y value is dependent on x value.
The graph shows five points are plotted on XY coordinate system that represents a relationship between independent variable X and dependent variable Y.
hence, this graph is plotted from a function.
from the graph we get the domain as {-4, -2, 0, 2, 4}
the ranges are = {-3, -2, -1, 1, 3}
we get, y=3 for the value of x= 2
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PLEASE HELP!!! I NEED ANSWERS NOW!!!
Chef Alfredo invested $4800 at a simple interest rate of 5% and can now afford a $6,000 state-of-the-art pizza
oven. How many years ago did he make this investment? Show all your work and answer in a complete sentence.
Chef Alfredo made the investment 4 years ago.
To solve this problem, we have to use the formula of simple interest.
Data;
rate = 5%principal = 4800Simple Interest + principal = $6000T = time ?Simple InterestThe formula of simple interest is given as
\(S.I = \frac{PRT}{100}\)
Let's subtract the principal from the final amount to know the simple interest
\(6000-4800=1200\)
Substitute the values into the formula
\(s.i=\frac{prt}{100} \\1200=\frac{6000*5*t}{100}\\ 1200*100=6000*5*t\\120000=30000t\\t = 4\)
The time he made that investment was 4 years ago
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HELP PLEASE.........................
Answer:
54% = 27/50
72% = 18/25
97% = 97/100
A national census is mandated by the Constitution of Pakistan to be held every ten years. After the independence of Pakistan in 1947, the first census took place in 1951. Figure 1 reflects the increase in population of Pakistan during last four national census. The increase between 1972 and 2017 could be approximated by a linear function. If in 1972 the population was 65.309 million and as per the census data of 2017 the population was 207.774 million;
a) Determine the estimation function P = f (t), where P equals the population of Pakistan and t equals time measured in years since 1972.
b) Interpret the slope and P intercept
c) According to this function, what will be the estimated population of Pakistan in 2027 census?
HELP ME PLEASE THIS IS DUE TMRW
9. A large square room has an area of 144 m².
a) Find the length of a side of the room.
b) How much baseboard is needed to
go around the room?
c) Each piece of baseboard is 2.5 m long.
How many pieces of baseboard
are needed?
Answer:
Step-by-step explanation:
a.144m2. take the square root of that to find the length of one side of the room
the square root would be 12m
b. this is basically asking for the perimeter. since you have one side of the room, you can find the perimeter now by multiplying one side by 4, because a square has 4 equal sides. 12 times 4 is 48m
c. each piece of the baseboard is 2.5m, you need 48 m of baseboard. divide 48/2.5 to get your answer. 19.2 pieces of baseboard, or 20 if you want to get technical