Identify the best deal for each item
For milk, Store A has the better deal: $2.50 for 1 gallon is cheaper than $3.19 for 2 liters at Store B.For bread, Store B has the better deal: $1.49 for a loaf is cheaper than $1.99 for a loaf at Store A.For eggs, Store B has the better deal: $0.99 for a dozen is cheaper than $1.79 for a dozen at Store A.Which store has the better deal for the following items?Eli needs to visit both stores to get the best deals for each item. Store A has the better deal for milk, while Store B has the better deals for bread and eggs. By going to both stores, Eli can save money on all three items.Learn more about deals
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w=0.75f.
What does 0.75 tell us in this situation?
Answer:
it should be in the ratio of 3:4
Step-by-step explanation:
100w= 75f
w/f = 75/100
= 3/4
= 3:4
2 + (-6)
HELP PLEASE !!
Step-by-step explanation:
-4
MARK AS BRAINLIEST...........
Answer:
2+(-6)
2-6
-4
Your Welcome
BIFFY OUT!!!
Help me ASAP Need to hand in now
Answer:
(2d +7y) cm
Step-by-step explanation:
length of rope= 1st part +2nd part +3rd part
1st part= 2d
2nd part= d +2y
3rd part
= 2nd part +3y -2d
= d +2y +3y -2d
= 5y -d
Thus, length of rope
= 2d +d +2y +5y -d
= (2d +7y) cm
A phone company offers two monthly plans. Plan A costs $26 plus an additional $0.10 for each minute of calls. Plan B has no initial fee but costs $0.14 for each minute of calls.
The cost when two plans cost the same amount is $90, and the amount of calling for which the two plans cost the same is 650 minutes.
What is an algebraic expression?An algebraic expression is an equation made up of variables and arithmetic operations like multiplication and division.
Assume that the two plans have the same costs when x minutes are called.
Therefore, the algebraic statement can be expressed as 26 + (0.10) = 0 + (0.14),
or Plan A Equals Plan B.
By solving this, we can determine how many minutes each of the two plans will cost:
650 minutes are equal to 26 = 0.10x - 0.14x 0.04x.
B) The price when two plans have the same price:
Plan A = 26 + 0.10 x 650
= 26 + 65 = $90,
or Plan A Equals Plan B = $90.
The following are the answers:
A) Calling for 650 minutes will be equal in price between the two plans.
B) The price is $90 when two plans have the same price.
Hence, The cost when two plans cost the same amount is $90, and the amount of calling for which the two plans cost the same is 650 minutes.
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If sin ø = 1/3, what are the values of cos ø and tan ø?
Step-by-step explanation:
SinA=1/3=p/h
p=1,h=3,and b=?
Using Pythagoras Theorem,
b=√3^2-1^2
b=√9-1
b=√8=2√2
Now,
CosA=b/h=2√2/3
TanA=p/b=1/2√2
There is no phi in my keypad so I use A angle instead of phi.Adjust it.
Is 17 a interger or a counting number
Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate).
a. The population size is infinite (to 2 decimals).
b. The population size is N = 50,000 (to 2 decimals).
c. The population size is N = 5000 (to 2 decimals).
d. The population size is N = 500 (to 2 decimals).
The value of the standard error of the mean in each of the following cases are as follows: a) = 1.414213562 = 1.41, b) = 1.41, c) = 1.41 and d) = 1.34.
As standard error (SE) = s × fpc /sqrt (n) and fpc = sqrt [(N-n) / (N-1)] where,
N = population size
n = sample size
then,
a) The population size is infinite (to 2 decimals).
If N = infinity, then fpc = 1.
Thus, SE = 10×1/sqrt (50) = 1.414213562 = 1.41
b) The population size is N = 50,000 (to 2 decimals).
If N = 50000, then
fpc = sqrt [(50000-50)/(50000-1)] = 0.99950987
Thus, SE = 10*0.99950987/sqrt (50) = 1.413520414 = 1.41
c) The population size is N = 5000 (to 2 decimals).
If N = 5000, then
fpc = sqrt [(5000-50)/ (5000-1)] = 0.995086951
Thus, SE = 10*0.995086951/sqrt (50) = 1.407265462 = 1.41
d) The population size is N = 500 (to 2 decimals).
If N = 500, then
fpc = sqrt [(500-50)/ (500-1)] = 0.949633407
Thus, SE = 10*0.949633407/sqrt (50) = 1.342984443 = 1.34
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1. Differentiate the function f(x) = ln (81 sin^2 (x)) f’(x) 2. Differentiate the function P(t) = in ( √t2 + 9) p' (t) 3. if x2 + y2 + z2 = 9, dx/dt = B, and dy/dt = 4, find dz/dt when (x,y,z) = (2,2,1)
dz/dt =
First you will get 4dz
Two numbers are such that their
difference, their sum and their
product are in the ratio 1:3: 8.
Find the product of the
number.
The two numbers are 4 and 8 and their product is 32, using algebra to solve for the unknown x and y to represent the numbers.
How to solve for the product of the two numbersLet the two numbers be x and y such that we have the ratios;
x - y : x + y : x × y = 1: 3 : 8
(x + y)/xy = 3/8
3xy = 8(x +y) {by cross multiplication}
3xy = 8x + 8y ...(i)
also
(x - y)/xy = 1/8
xy = 8x - 8y {by cross multiplication}
xy = 8x - 8y ...(ii)
add equations (i) and (ii)
4xy = 16x {divide through by 4x}
y = 4
substitute the value of y = 4 in equation (ii)
4x = 8x - 8(4)
4x = 8x - 32
4x = 32 {collect like terms}
x = 32/4 {divide through by 4}
x = 8
Therefore, the unknown numbers are 4 and 8 and their product is 32.
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Three lizards eat 63 grams of food each day. How many grams of food would you expect 5 lizards to eat
Answer: 105 grams
Step-by-step equation: they each eat 21 grams a day
Use the laplace transform to solve the given initial-value problem. y'' + y = f(t), y(0) = 0, y'(0) = 1, where f(t) = 0, 0 ≤ t < 1, ≤ t < 2 0, t ≥ 2
In order to solve this IVP using Laplace transforms, we must first write f(t) in terms of the Heaviside function.
f(t)=0*(u(t)-u(t-Pi))+1*(u(t-Pi)-u(t-2Pi))+0*(u(t-2Pi))
f(t)=u(t-π)-u(t-2π)
So, the rewritten IVP is
y'' +y = u(t-π)-u(t-2π)y(0)=0, y'(0)=1
Taking the Laplace transform of both sides of the equation, we get:
s2L{y}-sy(0)-y'(0)+L{y}=(1/s)*e-πs-(1/s)*e-2πs
s2L{y}-1+L{y}=(1/s)*e-πs-(1/s)*e-2πs
(s2+1)L{y}=1+(1/s)*e-πs-(1/s)*e-2πs
L{y}=1/(s2+1)+(1/s(s2+1))e-πs-(1/s(s2+1))*e-2πs
Now, we must take the inverse transform of both sides to solve for y.
The first inverse transform is easy enough. By definition, it is sin(t).
The second two inverse transforms will be a little tougher, we will have to use partial fraction decomposition to break them down into terms that are easier to compute.
A/s+(Bs+C)/(s^2+1)=1/(s(s^2+1))
A(s^2+1)+(Bs+C)(s)=1
As^2+A+Bs^2+Cs=1
Rewriting this system in matrix form, we get:
1 1 0 A 0
0 0 1 * B = 0
1 0 0 C 1
Using row-reduction we find that A=1, B=-1, and C=0. So, our reduced inverse transforms are:
L-1{(e-πs)(1/s-s/(s2+1))}
and
L-1{(e-2πs)(1/s-s/(s2+1))}
Using the first and second shifting properties, these inverse transforms can be computed as.
L-1{(e-πs)(1/s-s/(s2+1))}=u(t-π)-cos(t-π)u(t-π)
L-1{(e-2πs)(1/s-s/(s2+1))}=u(t-2π)-cos(t-2π)u(t-2π)
Combining all of our inverses transforms, we get the solution the IVP as:
y=sin(t)+u(t-π)-cos(t-π)u(t-π)+u(t-2π)-cos(t-2π)u(t-2π)
In mathematics, the Laplace transform, named after its discoverer Pierre Simon Laplace (/ləˈplɑːs/), transforms a function of real variables (usually in the time domain) into a function of complex variables (in the time domain). is the integral transform that Complex frequency domain, also called S-area or S-plane).
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Can someone answer this for me?
Answer: as per question statement
we need to set up an equation first
p(t)=1200e(0.052*t)
they have given that it is relative to 1200 that means it starts to increase from 1200 at t=0 initially 1200 bacteria were present
we need to find population at t=6
we need to plug t=6 in p(t).
P(6)=1200e(0.052*6)=1639.38
1638.38 bacteria were present at that time t=6
Step-by-step explanation: I hope this helps.
Martín compra en la papelería una cuadernola y un block de hojas. Gastó en total $270. Se sabe además que el block de hojas sale 120 más que la cuadernola. Pregunta 4 Si "x" representa el precio de la cuadernola, ¿cómo expresarías el precio del block de hojas? El precio del block de hojas lo expresaría como
Answer:
El precio de las hojas lo expresaría como:
y= x+120, donde
x=precio de la cuadernola
y= precio del block de hojas
Step-by-step explanation:
De acuerdo a la información del enunciado, sabes que la suma del precio de una cuadernola y un block de hojas es igual a $270, lo cual puedes expresar de la siguiente forma:
x+y=270
x=precio de la cuadernola
y= precio del block de hojas
Además, en el enunciado se indica que block de hojas sale 120 más que la cuadernola lo que significa que el precio del block de hojas es igual al precio de la cuadernola más 120, lo que puedes indicar de la siguiente forma:
y= x+120
Esta ecuación la puedes reemplazar en la primera para encontrar los precios:
x+(x+120)=270
x+x=270-120
2x= 150
x=150/2
x= 75
Después puedes reemplazar el valor de x para encontrar y:
y= 75+120
y= 195
Given that a function, g, has a domain of -1 ≤ x ≤ 4 and a range of 0 ≤ g(x) ≤ 18 and that g(-1) = 2 and g(2) = 8, select the statement that could be true for g.
Options
(A)g(5) = 12 (B)g(1) = -2 (C)g(2) = 4 (D)g(3) = 18Answer:
(D)g(3) = 18
Step-by-step explanation:
Given that the function, g, has a domain of -1 ≤ x ≤ 4 and a range of 0 ≤ g(x) ≤ 18 and that g(-1) = 2 and g(2) = 8
Then the following properties must hold
The value(s) of x must be between -1 and 4The values of g(x) must be between 0 and 18.g(-1)=2g(2)=9We consider the options and state why they are true or otherwise.
Option A: g(5)=12
The value of x=5. This contradicts property 1 stated above. Therefore, it is not true.
Option B: g(1) = -2
The value of g(x)=-2. This contradicts property 2 stated above. Therefore, it is not true.
Option C: g(2) = 4
The value of g(2)=4. However by property 4 stated above, g(2)=9. Therefore, it is not true.
Option D: g(3) = 18
This statement can be true as its domain is in between -1 and 4 and its range is in between 0 and 18.
Therefore, Option D could be true.
Answer: g(3) =18
Step-by-step explanation: thats probably all you need
Alexei wants to hang a mirror in his boat and put a frame around it. the mirror and frame must have an area of 19.25 square feet. the mirror is 3 feet wide and 5 feet long. which quadratic equation can be used to determine the thickness of the frame, x? 2x2 8x − 19.25 = 0 3x2 5x − 19.25 = 0 4x2 16x − 4.25 = 0 4x2 16x 15 = 0
The quadratic equation that can be used to determine the thickness of the frame will be B. 3x² + 5x - 19.25 = 0
What is a quadratic equation?It should be noted that a quadratic equation simply means an algebraic expression of the second degree in x.
In this case, the quadratic equation that can be used to determine the thickness of the frame will be 3x² + 5x - 19.25 = 0
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Answer:
The answer is C. 4x2 + 16x - 4.25 = 0.
Step-by-step explanation:
How i can answer this question, NO LINKS, If you answer correctly I will give u brainliest!
Answer:
1. 20/2.50=8 2. (20-5)/2.5= 6
Step-by-step explanation:
math
The 2nd question's answer is 8 kilometers.
Brainliest pls if i m correct!
Which of the following T-tables would NOT be an appropriate model for the function shown here?
The table B would not be an appropriate model for the function shown here.
What is a function?A relation between a collection of inputs and outputs is known as a function. A function is a connection between inputs in which each input is connected to precisely one output. Each function has a range, co-domain, and domain.
Given:
A function is shown here.
In the graph:
When x = 2, then f(x) = 2 ≠ 0.
From the given choices:
The table B gives contradiction.
Therefore, the table D is not an appropriate model.
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assume that a graph is represented as an adjacency list with n vertices and m edges. how many comparisons does it take to find a single vertex indegree?
For a graph that represents the adjacency list with vertices and edges, then total ( n- 1) comparisons does it take to determine a single vertex indegree.
In a simple graph with n vertices, the degree of a vertex degrees(v) = n - 1 ∀ v ∈ G. The in-degrees of a vertex V is the number of edges that enter the vertex V.
Outer degree of graph: The outer degree of the V vertex is the number of edges outside it. We have a graph represented as a list with n vertices and m sides. We need to determine the need to compare individual vertices in degrees. The index of the array represents a vertex, and each item in the linked list represents a vertex that forms an edge with the vertex. Mark each vertex by squeezing a one degree, 0 degree node. A vertex can form an edge with any vertex other than itself. So the degree of a vertex will depend on the number of vertices. That is, the expected value is n-1.
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Answer correctly thanks a lot.
Answer:
-6
Step-by-step explanation:
A baseball card bought for $50 in 2020 increases 3% in value each year
The value of the baseball card after 10 years will be approximately 67.13 if it increases in value at a rate of 3% per year.
Let the value of the baseball card in 2020 be V.
If the card increases in value at a rate of 3% per year, then the value of the card after n years will be given by the formula:
V = 50(1 + 0.03)n
To find the value of the card after 10 years, we substitute n = 10 into the formula and evaluate:
V = 50(1 + 0.03)10V
≈ 67.13
This represents a gain of 17.13 over the original purchase price of 5.
Thus, the value of the baseball card after 10 years will be approximately 67.13 if it increases in value at a rate of 3% per year.
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The radii of two concentric circles are in the ratio 3:5. If the length of the chord of the larger circle that is tangent to the smaller circle is 40 cm, complete the following statements:
The length of the chord of the larger circle can be found by taking the square root \((5r)^2 - (2r)^2\) which is equal to r√21, where r is the radius of the smaller circle.
The given problem states that there are two concentric circles with radii in the ratio of 3:5. This means that the radius of the smaller circle is 3r and the radius of the larger circle is 5r. The distance between the center of these two circles is 2r.
Also, it is given that the length of the chord of the larger circle that is tangent to the smaller circle is 40 cm. Using this information, we can find the length of the chord of the larger circle by using the Pythagorean theorem.
The length of the chord of the larger circle is found by taking the square root of \((the radius of the larger circle)^2\) - \((the distance between the two centers)^2\) which is √21\(r^2\)= r√21.
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The Venn diagram below is used for showing odd numbers and prime numbers.
Place the numbers 1, 2, 3, 4 and 5 in the Venn diagram.
E
Odd
numbers
Prime
numbers
The Venn Diagram for showing odd numbers and prime numbers would be :
Odd numbers :
1Prime number :
2Both prime and odd:
354 is not to be included in the Venn Diagram.
What are prime numbers ?Prime numbers are positive integers that have exactly two distinct divisors, which are 1 and the number itself. In other words, a prime number is a number greater than 1 that is divisible only by 1 and itself.
1 is an odd number but not a prime number. 2 is a prime number but not an odd number. 3 and 5 are both odd and prime numbers.
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Find the volume of the rectangular prism.
8 cm
8 cm
3 cm
Answer: Volume = 192
Step-by-step explanation:
Volume of Rectangular Prism = Length x Width x Height
Volume = 8x3x8
Volume = 192
Rebekah performed an experiment with a standard number cube. She rolled the cube and recorded the results in the frequency table. The frequency table is given below. Find the experimental probability of the cube landing on three.
Answer:
Step-by-step explanation:
The experimental probability of the cube landing on three is 1/10.
Solve each equation. Remember to check for extraneous solutions. k+2/k-4-4k/k-4=1
The value of K will be 3/2
Given,
k+2/k-4 - 4k/k-4 = 1
Now,
Take LCM of LHS,
(k+2-4k) / k - 4 = 1
k + 2 - 4k = k - 4
k = 6/4
k = 3/2
Hence the value of k in the equation is 3/2.
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A function is graphed on the coordinate plane. What is the domain of the function?
Answer:
для цього є інтернет, не біси мене
A cube has a volume of (0.75xy)3 cubic centimeters.
What is the volume of the cube expressed as a fraction?
The volume of the cube expressed as a fraction will be 27x³y³ / 64.
Given that:
Volume, V = (0.75xy)³
It is frequently mathematically quantified using SI-derived units or different imperial or US traditional units. The concept of length is linked to the notion of capacity.
The volume of the cube expressed as a fraction is calculated as,
V = (0.75xy)³
V = (3xy/4)³
V = 27x³y³ / 64
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Find the area of the circle. Round your answer to the nearest hundredth. Use 3.14 or 22/7 for π (pi)
Answer:
3.14
Step-by-step explanation:
1x1xpi
1x3.14=3.14
In this coordinate plane, the slope of line a is equal to the opposite reciprocal of the slope of line b.
Blank 1: \(\frac{k}{m}\)
Blank 2: \(-\frac{k}{n}\)
Blank 3: \(\frac{k}{m}=\frac{n}{k}\)
Blank 4: \(\frac{KL}{KM}=\frac{KN}{KL}\)
Blank 5: SAS similarity theorem
Blank 6-9: The options are needed
need help pleaseeeeeeeee
The equation of the line of best fit is ŷ = 0.06x + 2.57
How to determine the equation of the line of best fitFrom the question, we have the following parameters that can be used in our computation:
Years Since 2000 0 1 2 3 4 5 6 7 8 9
Average Cost ($) 2.59 2.81 2.65 2.67 2.88 2.70 2.85 2.88 3.17 3.24
Next, we enter the above values in a graphing tool;
The calculation summary are as follows
Sum of X = 45Sum of Y = 28.44Mean X = 4.5Mean Y = 2.844Sum of squares (SSX) = 82.5Sum of products (SP) = 4.94The regression equation is represented as
ŷ = bx + a
Where
b = SP/SSX = 4.94/82.5 = 0.06
a = MY - bMX = 2.84 - (0.06*4.5) = 2.57
So, we have
ŷ = 0.06x + 2.57
Hence, the equation of the line of best fit is ŷ = 0.06x + 2.57
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