The dictionary cost $36 if Merisa spent 3÷4 of her money on a dictionary. She spent 1÷2 of the remainder on a calculator.
What is Algebraic expression ?
In mathematics, an algebraic expression is a combination of variables, constants, and mathematical operations, such as addition, subtraction, multiplication, and division, that represents a quantity or a relationship between quantities.
Let M be the total amount of money Merisa had before she made any purchases.
Merisa spent 3÷4 of her money on a dictionary, which means she spent 1÷4 of her money on the calculator and other expenses.
So, the amount of money she had left after buying the dictionary is:
M - 3÷4 M = 1÷4 M
She then spent 1÷2 of the remainder on a calculator, so:
(1÷2) (1÷4 M) = 1÷8 M
Let's call the cost of the calculator C.
We know that the dictionary cost $30 more than the calculator, so:
D = C + $30
We can now set up an equation to solve for C:
C + $30 = 3÷4 M
C = 3÷4 M - $30
And we also know that:
C = 1÷8 M
We can substitute the second equation into the first equation and solve for M:
1÷8 M + $30 = 3÷4 M
3÷4 M - 1÷8 M = $30
5÷8 M = $30
M = $48
So, Merisa had $48 before she made any purchases.
We can now use this to find the cost of the dictionary:
D = C + $30
D = (1÷8 M) + $30
D = ($6) + $30
D = $36
Therefore, the dictionary cost $36.
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Solve using substitution method
2x+y=12, 3x-7y=1
follow the steps in the picture above
Step-by-step explanation:
look the ans it will make you clear about substitution method clear
Three friends participate in the loyalty program at a local coffee shop. A participant in the program earns points for each visit that can be used to get drinks and food for free. The graph below shows the point balances of the three friends over several weeks?
help me it's the 23 and the 24 please.
Answer:
On the graph, the point balances for the three friends on the 23rd week are:
- Friend A: 60 points
- Friend B: 80 points
- Friend C: 40 points
On the 24th week, the point balances are:
- Friend A: 80 points
- Friend B: 100 points
- Friend C: 60 points
It looks like all three friends are earning points and increasing their balances over time. Friend B seems to be earning points at a faster rate than the other two friends, as their balance is consistently higher. Friend C has the lowest balance, but is still earning points and increasing their balance.
The arithmetic calculations and statistical procedures for (a) the test of homogeneity and (b) the test of independence are the same.
a) Explain in a few sentences what distinguishes these two hypothesis tests.
b) To illustrate your answer in part (a), make up an example of a research question that would require a test of homogeneity, and an example that would require a test of independence. Briefly describe the aspects of your examples that illustrate the distinguishing characteristics you mentioned in part (a).
a) These two hypothesis tests differ in terms of their research questions, assumptions, and the types of variables that are involved in each test.
The arithmetic calculations and statistical procedures for (a) the test of homogeneity and (b) the test of independence are not the same. They are different from each other. These two hypothesis tests differ in terms of their research questions, assumptions, and the types of variables that are involved in each test. This is because they deal with different types of data. Below are the examples of a research question that would require a test of homogeneity and an example that would require a test of independence. These examples show the distinguishing characteristics that are involved in each of these tests. Research question that would require a test of homogeneity: A researcher would like to determine whether there is any significant difference between the proportions of men and women who voted for the two main political parties in an election. The research question can be framed as follows: Are the proportions of men and women who voted for the two main political parties homogenous or different? Assumptions: Samples are independent, observations are nominal or categorical, and the variable of interest has more than two categories (i.e., nominal or ordinal).Test of homogeneity:It is used to determine whether two or more populations have the same proportion or distribution of a nominal or categorical variable.Example that would require a test of independence:A researcher is interested in knowing whether there is any relationship between gender and drug addiction among high school students in a particular area. The research question can be framed as follows: Is there a relationship between gender and drug addiction among high school students?Assumptions:Samples are independent, observations are nominal or categorical, and the variable of interest has only two categories (i.e., nominal).Test of independence: It is used to determine whether there is any relationship between two nominal or categorical variables.
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Rhonda kept track of the cats at a shelter where she volunteers. She measured how many times per day each cat ate, and she also ranked their activity level on a scale from 1 to 10 each day. She found the line of best fit for the data has the equation y=0. 23x+4. 1, where x represents the activity level and y represents the number of meals eaten.
If a cat had an activity level of about 9, then it's likely to have eaten about _[blank]_ meals.
Enter the value that correctly fills in the blank.
Round to the nearest whole number, if necessary, like this: 42
A cat would probably have consumed about 6 meals if its activity level had been around 9.
A linear equation is a relation between two variables in which one is dependent on the other in such a manner that changing one of the variables causes the change in another variable "linearly".
The above statement can be represented mathematically as,
y=mx+b
where m represents the rate of the change and c is the initial value of the equation.
Let x stand for activity level and y for the number of meals consumed. Therefore:
y = 0.23x + 4.1
For an activity level of 9, we will put x as 9:
y = 0.23(9) + 4.1 = 6.17
Thereby, we can say that If a cat had an activity level of about 9, then it's likely to have eaten about 6 meals.
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4.02 Lesson check ! (8)
The difference is not constant, the sequence is not arithmetic.
What exactly is an algebraic sequence?An arithmetic sequence is a set of integers where each term is created by multiplying the preceding term by a fixed constant value (known as the common difference). A constant rate of change is modelled by arithmetic sequences in fields like engineering, physics, and financial computations.
For the given series we need to determine if the sequence is arithmetic, by checking difference between consecutive terms is constant.
9 - 7 = 2
12 - 9 = 3
16 - 12 = 4
Since the difference is not constant, the sequence is not arithmetic.
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The following chips are placed in a bucket 5 white, 1 yellow, 2 blue, and 1 green. One chip is randomly selected from the bucket.
What color chip has the best chance of getting selected?
Answer: So,
If we add them together, we get
5 + 3 + 4 + 1 = 13
Since there are 4 blue chips, the probability would be 4 out of the total number of chips, or 4/13.
Step-by-step explanation: Hope this helps! <3
A sample of students is taken from the school's A honor roll. The school estimates there are 360 students on the A honor roll. How many students on the A honor roll are 7th graders?
GET 30 POINTS
1) Coordinate point B is at (4,3). What will the coordinates be for B' after a translation of (x-2,y+3)?
*
B' (5,4)
B' (2,6)
B' (6,2)
B' (-2,3)
What is the coordinate for G(3,-2) after it is reflected across the x-axis?
*
(2,3)
(-2,3)
(3,2)
(-3,-3)
What is the translation rule that describes the result of the composition of
(x, y) --> (x+4, y-1) and (x, y) --> (x-5, y-5)?
*
(x, y) --> (x-1, y-6)
(x, y) --> (x+1, y-3)
(x, y) --> (x+9, y+6)
(x, y) --> (x+1, y+6)
thank you so mcuh
After translatiοn, the cοrrect answer is B' (x+2, y+6).
The cοοrdinate after reflectiοn is (3,2).
The translatiοn rule that describes the result οf cοmpοsitiοn is (x, y) →(x-1, y-6).
What are transfοrmatiοns?Transfοrmatiοns in a triangle refer tο changes that can be made tο the shape, size, pοsitiοn, οr οrientatiοn οf the triangle οn a cοοrdinate plane. The three main types οf transfοrmatiοns that can be applied tο a triangle are:
Translatiοn: This transfοrmatiοn invοlves mοving the entire triangle tο a new pοsitiοn οn the cοοrdinate plane withοut changing its size οr shape.
Rοtatiοn: This transfοrmatiοn invοlves rοtating the entire triangle arοund a fixed pοint οn the cοοrdinate plane. The fixed pοint is called the center οf rοtatiοn, and the angle οf rοtatiοn determines the amοunt οf turn.
Scaling: This transfοrmatiοn invοlves changing the size οf the triangle by multiplying the x and y cοοrdinates οf each vertex by a fixed factοr.
1) Applying the translatiοn οf (x-2, y+3) tο pοint B(4,3) wοuld result in: B' = (4 + (x-2), 3 + (y+3)) = (x+2, y+6)
Therefοre, the cοrrect answer is B' (x+2, y+6)
2) Reflecting pοint G(3,-2) acrοss the x-axis results in the y-cοοrdinate being negated, and the x-cοοrdinate remains the same. Therefοre, the cοοrdinates οf the reflected pοint wοuld be G(3, 2).
The cοrrect answer is (3,2).
3) Tο determine the cοmpοsitiοn οf (x, y) → (x+4, y⁻¹) and (x, y) →(x-5, y⁻⁵), we need tο apply them in οrder. Firstly, (x, y) → (x+4, y-1) is applied tο pοint (x,y), which results in:(x, y)→ (x+4, y-1)
Next, (x, y) → (x-5, y-5) is applied tο the result frοm the previοus transfοrmatiοn (x+4, y-1), which results in:(x+4, y-1)→(x-1, y-6)
Therefore, the correct answer is (x, y) →(x-1, y-6).
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Given: LK congruent NM,Kj congruent Mj
Prove: LT congruent NJ
PLS PLS PLS HELP IM FAILING GEOMETRY RNNNNN
By the Definition of congruent property, we have proved that:
VW ≅ VX
Congruent Property:
The three properties of congruence are the reflexive property of congruence, the symmetric property of congruence and the transitive property of congruence. These properties can be applied to line segments, angles, triangles, or any other shape.
Given: VZ ≅ VY and WY ≅ XZ
Prove: VW ≅ VX
Proof:
(Given): VZ ≅ VY and WY ≅ XZ
By the Definition of Congruent Substitute:
VZ = VY and WY = XZ
⇒ VZ = VX + XZ , and,
VY = VW + WY
By Substituting
VX + XZ = VW + WY
Again,
VX + WY = VW + WY
Now,
By Subtraction property of Equality
VX = VW
VW = VX (Definition of congruent property.)
Complete Question:
IF VZ congruent of VY and WY congruent of XZ. Prove that VW is Congruent of VX.
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can you please help
Solve 3X+1
Answer: The answer is 3
Step-by-step explanation:
3x+1 take one minus one.
3x1-1 1-1 for exponents value becomes 0
3x0 for every term 0 is = to one in a exponent value so it become 3x1
3x1 = 3
So the answer is 3..
Step-by-step explanation:
In the 3x+1 problem, no matter what number you start with, you will always eventually reach 1. The problemproblm has been shown to be a computationally unsolvable problem.
Please ASAP Help
Will mark brainlest due at 12:00
Answer:
plot the point at 1
Step-by-step explanation:
Answer:
(1,0)
Step-by-step explanation:
S = (-7,0)
T = (3,0)
W = (x,0)
Find the area of the shaded sectors. Round to one decimal place. EB = 10,4 A=4
360
A
D
A=(
E
143
B
C
The answer of the given question based on finding the area of the shaded sectors the answer is approximately 18.8 + 4.2 = 23.0 square units.
What is Angle?An angle is geometric figure formed by the two rays or lines that share common endpoint, called vertex. The rays or lines are often referred to as arms or sides of angle
We need to know the central angles of each sector. We can find these angles by using the formula:
angle = (arc length / radius) * (180/π)
where π is pi, approximately equal to 3.14.
Therefore, we can use trigonometry to find angle EOB:
sin(EOB) = EB/OA
sin(EOB) = 10.4/8
EOB = sin^-1(10.4/8)
EOB ≈ 56.7° degrees
Since angle EOA is a right angle, we know that angle AOB is 90° degrees, so angle AOE is 90 - EOB = 33.3° degrees.
Now, we can find the area of each sector using the formula:
area = (angle/360) * π * r²
Area of shaded sector ADE:
angle AOE = 33.3° degrees
radius = OA = 8
area = (33.3/360) * π * 8²
area ≈ 18.8 square units
Area of shaded sector EBC:
angle EOB = 56.7° degrees
radius = EB/2 = 5.2
area = (56.7/360) * π * 5.2²
area ≈ 4.2 square units
Therefore, the total area of the shaded sectors is approximately 18.8 + 4.2 = 23.0 square units.
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what is the lcm of 14 and 18
HELP MEEEEEEEE
20 POINTS
Answer: 61 N
Step-by-step explanation:
18+15+28=61
Is 0.06 bigger than 0.066
Answer:
Yes, 0.06 is bigger than 0.066, because 0.06 is greater than 0.066 when they are written in decimal form. This is due to the fact that 0.06 has 6 tenths, while 0.066 has 66 hundredths.
Answer:
no
Step-by-step explanation:
that is because 0.6 = 0.6000000
and 0.066 = 0.6600000
Determine a series of transformations that would map polygon ABCDE onto polygon A'B'C'D'E'?
E) Let y = g(x) be the particular solution to the differential equation dy/dx= 3sin(pix)/2y with initial condition
g(1/2)=3. Then g(x)= sqare root of a+bcos(pix) where a and b areconstants. Find a
Answer:
9
Step-by-step explanation:
You want the value of the constant 'a' in the solution y=√(a+b·cos(πx)) to the differential equation y'=3sin(πx)/(2y) with initial condition y(1/2) = 3.
Initial conditionSubstitute the initial condition into the equation for y:
y = 3 . . . . when x = 1/2
y = √(a +b·cos(πx))
3 = √(a +b·cos(π/2)) = √a
3² = a = 9
The value of a is 9.
__
Additional comment
The value of 'b' is -3/π.
It can be found by putting the equation for y in the original differential equation, and solving for b.
Work out the equation of the straight line that passes through (5, 4) and (8, 19). Give your answer in the form y = mx + c, where m and c are integers or fractions in their simplest forms.
Answer:
y = 5x - 21
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 )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (5, 4 ) and (x₂, y₂ ) = (8, 19 )
m = [tex]\frac{19-4}{8-5}[/tex] = [tex]\frac{15}{3}[/tex] = 5 , then
y = 5x + c ← is the partial equation
to find c substitute either of the 2 points into the partial equation
using (5, 4 ) , then
4 = 5(5) + c = 25 + c ( subtract 25 from both sides )
- 21 = c
y = 5x - 21 ← equation of line
Please help! Algebra Math!
On the day that certain crlebrity proposes marriage 10 peoplesknow aboutb it. Each day afterward the number of people who knows triples
Write a function that give the total number n(t) of people who know about the celebrity proposing t days after thecelebrity propose
N(t)=
the total number of people who know about the proposal 5 days after it was announced is 810.
The term [tex]3^ (t-1)[/tex] represents the number of people who find out about the proposal on day t, which is equal to three times the number of people who knew about it on the previous day. The initial value of 10 represents the number of people who knew about the proposal on the first day.
For example, if we want to find out how many people know about the proposal 5 days after the celebrity proposes, we can plug t=5 into the formula:
N(5) =[tex]10* 3^(5-1)[/tex] = [tex]10*3^4[/tex] = [tex]10*81[/tex] = 810
So the total number of people who know about the proposal 5 days after it was announced is 810.
the complete question is :
Assuming that the 10 people who know about the proposal on the first day do not forget or tell anyone else, we can use the following function to calculate the total number of people who know about the proposal t days after the celebrity proposes:
N(t) = [tex]10 * 3^(t-1)[/tex]
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Combine the terms that can be combined. Indicate the others in descending powers of x or a.
21. 720 + 40-60-120 + 15 =
24. 3x² - 2xy + 4x²-3xy + y² =
22. 25ab +6a²-3b² +6=
25. 2x + x + 25y-y-4=
23. 3a+2b-3a + 1-3 =
The functions are arranged/combined as follows
21. 595
22. 6a² + 25ab - 3b² + 6
23. 2b - 2
24. 7x² - 5xy + y²
25. 3x - 24y - 4
How to combine the terms that can be combined or indicate in descending powers of x or aDescending powers involves making the highest power to be the first term
The equations are solved one after the other as follows
21.
720 + 40 - 60 - 120 + 15 = 595
22.
25ab + 6a² - 3b² + 6 =
6a² + 25ab - 3b² + 6
23.
= 3a + 2b - 3a + 1 - 3
= 3a - 3a + 2b + 1 - 3
= 2b - 2
24.
= 3x² - 2xy + 4x² - 3xy + y²
= 7x² - 5xy + y²
25.
= 2x + x + 25y - y - 4
= 3x - 24y - 4
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A streaming service charges $200 to download a digital song as well as a $4.99
membership fee. Which expression below gives the total cost in dollars to join the
streaming service and download games. Remember the charge is $2.00 per game plus
a membership fee of $4.99.
A.4.99n
B.n+4.99
C.2n +4.99
D.I don't know how to
do this.
The expressiοn calculates the tοtal cοst οf membership and game dοwnlοads. Sο, the cοrrect οptiοn is (C) 2n + 4.99.
Describe Algebraic Expressiοn?Algebraic expressiοns can include οne οr mοre variables, which are typically represented by letters, such as x, y, οr z. These variables can be used tο represent unknοwn quantities οr tο express relatiοnships between different quantities in a prοblem.
Algebraic expressiοns can alsο include cοnstants, which are fixed numbers, and cοefficients, which are the numbers that multiply the variables in the expressiοn. Fοr example, in the algebraic expressiοn 3x + 2y, the cοnstants are 3 and 2, and the cοefficients are 3 and 2, respectively.
The given prοblem describes twο different charges: a οne-time charge οf $200 tο dοwnlοad a digital sοng, and a membership fee οf $4.99 that must be paid regardless οf hοw many sοngs οr games are dοwnlοaded. Additiοnally, fοr dοwnlοading games, there is a charge οf $2.00 per game.
Therefοre, the tοtal cοst in dοllars tο jοin the streaming service and dοwnlοad games can be represented by the expressiοn:
2n + 200 + 4.99
Here, "n" represents the number οf games dοwnlοaded, and the expressiοn calculates the tοtal cοst οf membership and game dοwnlοads.
Sο, the cοrrect οptiοn is (C) 2n + 4.99.
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Urgent help is needed
a. The triangle can be sketched as shown in the attached image.
b. The side length OE is 4√11 inches
c. The measure of ∠G is 27.82°
How to calculate the side length OE?
a. The triangle can be sketched as shown in the attached image.
b. We can use Pythagoras theorem to calculate the side length OE. That is:
OE = √(15² - 7²)
OE = 4√11 inches
c. Using trig. ratio:
sin G = (4√11)/15 (opposite/hypotenuse)
sin G = 0.8844
G = sin⁻¹ (0.8844)
G = 27.82°
Thus, the measure of ∠G is 27.82°
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A. Please see attached photo for diagram
B. The length of side OE is 13 inches
C. The measure of of angle G, ∠G is 62°
B. How do i determine the length of OE?We can obtain the the length of OE by using Pythagoras theorem as shown below:
Length OG = 15 inchesLength GE = 7 inchesLength OE =?OE² = OG² - GE²
OE² = 15² - 7²
OE² = 225 - 49
OE² = 176
Take the square root of both sides
OE = √176
OE = 13 inches
Thus, the length of OE is 13 inches
C. How do i determine the angle G?The value of angle G, ∠G can be obtained as follow:
Hypothenuse = 15 inchesAdjacent = 7 inchesAngle G =?Cos G = Adjacent / Hypothenuse
Cos G = 7 / 15
Cos G = 0.4667
Take the inverse of Cos
G = Cos⁻¹ 0.4667
G = 62°
Thus, angle G is 62°
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Nancy has twice as many apples as jay. Jay has 3 more apples than Ava. Nancy has 22 apples. How many apples dose Ava have?
Answer: 8
Step-by-step explanation: Nancy has 22 apples, it was previously stated that Nancy has TWICE as many apples than Jay meaning Jay has 11 apples. Jay has 3 more apples than Ava meaning Ava has 8.
Demonstrate the property listed in the first column of the table by filling in the box in the second column of the table with an equivalent expression. Commutative Property of Addition Commutative Property of Multiplication gx h= Additive Identity Property of Zero n + 34 = Multiplicative Identity Property of One S+0= bx1 =
The property listed in the first column of the table by filling in the box in the second column of the table with an equivalent expression are: 1. Commutative Property of Addition 2. Additive Identity Property of Zero 3. Multiplicative Identity Property of One.
What is expression?An expression is a combination of numbers, variables, and mathematical operations such as addition, subtraction, multiplication, and division. It represents a value or quantity and can be evaluated or simplified to a single value or another expression. Expressions can contain constants, which are fixed values, such as the number 5 or the symbol π, or variables, which are symbols that represent varying values, such as x or y.
Here,
Commutative Property of Addition: The order in which two numbers are added does not change the result.
For example:
g + h = h + g
Additive Identity Property of Zero: Adding zero to any number does not change the value of the number.
For example:
n + 34 = n
Multiplicative Identity Property of One: Multiplying any number by one does not change the value of the number.
For example:
S * 1 = S
Commutative Property of Multiplication: The order in which two numbers are multiplied does not change the result.
For example:
b * x * 1 = x * b * 1
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A farmer has 2400 sheep, he loses 32,5% due to the drought. After that he loses 15% due to sickness. How many sheep does he have now?
The farmer now has 1377 sheep. If the farmer loses 32.5% of his 2400 sheep due to the drought, then he will have: 2400 * (1 - 0.325) = 1620 sheep left after the drought.
The farmer had 2400 sheep, but he lost 32.5% of them due to drought. Using the formula for finding percentages, we can calculate that 32.5% of 2400 is 780. So, the farmer had 2400 - 780 = 1620 sheep left after the drought. However, he then lost 15% of those remaining sheep due to sickness. Using the same formula, we can calculate that 15% of 1620 is 243. Therefore, the farmer had 1620 - 243 = 1377 sheep left after the sickness. So, the final number of sheep the farmer has now is 1377.
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Helpppp meee plssss will mark you big brain
Answer:
Step-by-step explanation:
16. Since the angle between the two values is 90, that is already half of 180, which is the total of all of the angles. So you make the equation, 3n+3+2n+7+90=180, which simplifies down to 5n+100=180, and after solving you get n = 16.
Here is the answer to your question
[tex] = 16[/tex]
Laila needs a new bike mirror. Her old mirror was a square with a side length of 7 cm. She wants
the new mirror to have approximately the same area as her old bike mirror.
Which circular bike mirror should Laila buy?
4 cm
7 cm
8 cm
Answer:
Approximately 4 cm
Step-by-step explanation:
Old mirror's area = S X S = 7 x 7 = 49cm2
Area of old mirror = Area of new mirror
49 = πr2
49 = 22/7 * r2
[tex]\frac{49 * 7}{22}[/tex] = r2
[tex]\frac{343}{22}[/tex] = r2
15.5909 = r2
r = [tex]\sqrt{15.5909}[/tex]
r = 3.948 cm = approx. 4cm
Hope it helps.
The number, 19/7, is what number
Answer: a rational number
-2 -1
X=0
YA
X=3
15
4
3
2
T
y = x²
2
3
4
y = (x-3)²
5 6
M
What are the coordinates for the x-
intercepts shown above?
XA
Answer:
what are the coordinator position y