Under her cell phone plan, Lily pays a flat cost of $40 per month and $4 per gigabyte.
She wants to keep her bill under $60 per month. Write and solve an inequality which
can be used to determine x, the number of gigabytes Lily can use while staying within
her budget.

The value of y corresponding to x₀ + 0.2 is approximately 0.6701  and the value of y corresponding to x₀ + 0.4 is approximately 0.5650 using Heun's method .

The differential equation using Heun's method, we will approximate the values of y at x₀ + 0.2 and x₀ + 0.4 based on the initial condition y(0) = 1.

Heun's method involves using the slope at two points to estimate the next point. The algorithm for Heun's method is as follows:

Given the initial condition y(x₀) = y₀, let h be the step size.

Set x = x₀ and y = y₀.

Compute k₁ = f(x, y) = -xy + 2(x² × eˣ - y²), where f(x, y) is the given differential equation.

Compute k₂ = f(x + h, y + hk₁).

Update y = y + (h/2) × (k₁ + k₂).

Update x = x + h.

Using the given initial condition y(0) = 1, we'll apply Heun's method to find the values of y at x₀ + 0.2 and x₀ + 0.4.

Initial condition

x₀ = 0

y₀ = 1

Step size

h = 0.2 (given)

Iterating through the steps until we reach x = 0.4:

x = 0, y = 1

k₁ = -0 × 1 + 2(0² × e⁰ - 1²) = -1

k₂ = f(0.2, 1 + 0.2×(-1)) = f(0.2, 0.8) = -0.405664

y = 1 + (0.2/2) × (-1 + (-0.405664)) = 0.7978688

x = 0.2, y = 0.7978688

k₁ = -0.2 × 0.7978688 + 2(0.2² × [tex]e^{0.2}[/tex] - 0.7978688²)

= -0.1777845

k₂ = f(0.4, 0.7978688 + 0.2×(-0.1777845))

= f(0.4, 0.7633118)

= -0.2922767

y = 0.7978688 + (0.2/2) × (-0.1777845 + (-0.2922767))

= 0.6701055

x = 0.4, y = 0.6701055

k₁ = -0.4 × 0.6701055 + 2(0.4² × [tex]e^{0.4}[/tex] - 0.6701055²)

= -0.1027563

k₂ = f(0.6, 0.6701055 + 0.2×(-0.1027563))

= f(0.6, 0.6495543)

= -0.2228019

y = 0.6701055 + (0.2/2) × (-0.1027563 + (-0.2228019))

= 0.5649933

Therefore, the value of y corresponding to x₀ + 0.2 is approximately 0.6701 (correct to four decimal places) and the value of y corresponding to x₀ + 0.4 is approximately 0.5650 (correct to four decimal places).

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f(x)=-4x-5

x=4, 1, 3, 11

f(4)=-4(4)-5=-16-5=-21

f(1)=-4-5=-9

f(3)=-12-5=-17

f(11)=-44-5=-49

-21, -9, -17, -49

Answer:

3

Step-by-step explanation:

4x-6=x+3

3x=9

x=3

substitute the two equations in for each other because they both equal x.

Answer:

4 hours/30 min=12

-2*12=-24

6-24=-18

-18°C

Step-by-step explanation:

Answer:

x = 112°

Step-by-step explanation:

To find the value of x, you need to understand the properties of vertical and supplementary angles and know that the sum of angles inside a triangle is 180°.

Answer:

All integers are rational numbers

Step-by-step explanation:

Since any integer can be written as the ratio of two integers, all integers are rational numbers. Remember that all the counting numbers and all the whole numbers are also integers, and so they, too, are rational.

Answer:

True

Step-by-step explanation:

An integer is a number including positive and negatives with 0 that are whole numbers and are not fractions or decimals

Answer:

80%

Step-by-step explanation:

You started of with 5/5 once one slice was eat it became 4/5

you must then convert 4/5 into a percent

To convert a fraction to a percent, divide the numerator by the denominator. Then multiply the decimal by 100.

so 4 divided by 5 =0.8

0.8 x 100= 80

80%

Answer:

8x+3y-2x-4y-6x​ = -y

Step-by-step explanation:

8x+3y-2x-4y-6x​ = ?

combine like terms:

(8x - 2x - 6x) + (3y - 4y) = ?

The x total is 0 and the y total is -1y

Answer:

-1y

Step-by-step explanation:

8x-2x-6x=0

3y-4y=-1y

That means the solution I think is -1y.

I say this because the X gets completely cancelled, and then the only thing left is -1y. If the X still had a number in front of it, it would then be like (This Is An Example: 2x = -1y) That's what it would look like if the X wasn't completely cancelled out. Have a good day. And if you see any fault in my answer please let me know so I can get better with problems like these. Thanks.

Given x is the score in the distribution. The interval of scores containing within one standard deviation from the mean is a < x < b. The solution for a and b are; a = x - SD and b = x + SD.

Let's see how we can solve these problems using the standard deviation and distribution.

36. To solve for a:

One standard deviation from the mean in a normal distribution includes about 68 percent of the scores.

Therefore, we know that:

P(mean - SD < x < mean + SD) = 68%. Where, SD = standard deviation of the distribution.

Therefore, to find a, we need to subtract SD from the mean.

So, a = mean - SD.

Distribution:

a < x < b

P(mean - SD < x < mean + SD) = 68%

Mean is x in this case; so:

P(x - SD < x < x + SD) = 68%

Now, solve for a by subtracting SD from x:

x - SD = a = x - SD

37). To solve for b.

From the previous problem,

we have: P(x - SD < x < x + SD) = 68%

To find b, we need to add SD to x

So, b = x + SD

Substitute the values of SD and x to get the value of b.

Distribution: a < x < b

P(mean - SD < x < mean + SD) = 68%

P(x - SD < x < x + SD) = 68%

So,

a = x - SD and b = x + SD.

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36. The value of a is µ - σ for the interval of scores containing within one standard deviation from the mean is a < x < b.

37. The value of b is µ + σ for the interval of scores containing within one standard deviation from the mean is a < x < b.

Explanation:

Given that x is the score in the distribution. The interval of scores containing within one standard deviation from the mean is a < x < b. We need to find the values of a and b.

Formula used:

µ ± σ,

where µ = mean

σ = standard deviation.

Using this formula we can write:

               µ - σ < x < µ + σ

36.

Given that x is the score in the distribution.

The interval of scores containing within one standard deviation from the mean is a < x < b.

Substitute the above formula in the given expression: µ - σ < x

a = µ - σ

µ - σ  = a + σ

a = µ - σ

Thus, the value of a is µ - σ.

37.

Given that x is the score in the distribution.

The interval of scores containing within one standard deviation from the mean is a < x < b.

solve for b.

Substitute the above formula in the given expression:

xa < µ + σ

b = µ + σ

µ + σ = b - σ

b = µ + σ

Thus, the value of b is µ + σ.

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The value of the correlation coefficient is represented by the symbol "r." It is a statistical measure that determines the degree of correlation or association between two variables.

There are various methods of calculating r, but the most common one is the Pearson correlation coefficient. To calculate the Pearson correlation coefficient, follow these steps:

Step 1: Collect the data for the two variables you want to determine the correlation for. The data should be continuous and normally distributed.

Step 2: Calculate the mean of both variables.

Step 3: Calculate the standard deviation of both variables.

Step 4: Calculate the covariance of the two variables using the formula below: `Cov(X, Y) = Σ [(Xi - Xmean) * (Yi - Ymean)] / (n-1)

`Step 5: Calculate the correlation coefficient using the formula below: `r = Cov(X, Y) / (SD(X) * SD(Y))` where r is the correlation coefficient, Cov is the covariance, SD is the standard deviation, X is the first variable, Y is the second variable, Xi and Yi are the individual values of X and Y, X mean and Y mean are the means of X and Y, and n is the number of observations. The resulting value of r ranges from -1 to +1. A value of -1 indicates a perfect negative correlation, a value of 0 indicates no correlation and a value of +1 indicates a perfect positive correlation.

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Answer:

I THINK C I’m not totally sure because it has an end point visible

Step-by-step explanation:

[tex]\huge{\mathbb{\tt { PROBLEM:}}}[/tex]

Help What is 103883+293883=?

[tex]\huge{\mathbb{\tt { ANSWER:}}}[/tex]

[tex]{\boxed{\boxed{\tt { SOLUTION:}}}}[/tex]

[tex] \: \: \: 103883 \\ \frac{+293883}{ \: \: \: \: 397766} [/tex]

[tex]\huge{\mathbb{\tt { WHAT \: IS \: ADDITION \: ?}}}[/tex]

#CarryOnLearning

#JustEnjoyTheSummer

The value of b is 3. By equating the decimal and the fraction, we solve for b and find that b = 3.

To find the value of b, we equate the decimal 0.76 to the fraction $\frac{4b + 19}{6b + 11}$. We can set up the equation:

0.76 = $\frac{4b + 19}{6b + 11}$

To eliminate the fraction, we cross-multiply:

0.76(6b + 11) = 4b + 19

Expanding and simplifying the left side of the equation:

4.56b + 8.36 = 4b + 19

Next, we isolate the variable b by moving all terms involving b to one side:

4.56b - 4b = 19 - 8.36

0.56b = 10.64

Finally, we divide both sides by 0.56 to solve for b:

b = $\frac{10.64}{0.56}$ ≈ 19

Since b is a positive integer, the closest value is b = 3.

Therefore, the value of b is 3.

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Answer:

2 friends have more than 5 cards

Step-by-step explanation:

Incomplete question;

I will answer this question with the attached dot plot

The horizontal axis represents the friends, the vertical represents the number of baseball trading cards and the dots represent the frequency

So, we have:

[tex]Friend\ 1 = 2[/tex]

[tex]Friend\ 2 = 3[/tex]

[tex]Friend\ 3 = 7[/tex]

[tex]Friend\ 4 = 4[/tex]

[tex]Friend\ 5 = 2[/tex]

[tex]Friend\ 6 = 6[/tex]

[tex]Friend\ 7 = 2[/tex]

[tex]Friend\ 8 = 5[/tex]

[tex]Friend\ 9 = 1[/tex]

[tex]Friend\ 0 = 0[/tex]

The friends that has more than 5 are:

[tex]Friend\ 3 = 7[/tex]

[tex]Friend\ 6 = 6[/tex]

Hence, 2 friends have more than 5 cards

Answer:

The answer is B

Step-by-step explanation:

Divide 48 by 3 which gives you the total amount for one bracelet then you have to multiply the amount by 9 and 13 and then find your answer in the letters.

The proportion relationship is as follows;

number of bracelet         total cost($)

                3                           48

                9                            144

               13                           208

Proportional relationship is one in which two quantities vary directly with each other.

Therefore, we can establish a proportional relationship between the number of bracelets and it cost.

Hence,

let

x = number of bracelet

y = cost of the bracelets

Therefore,

y = kx

where

k = constant of proportionality

48 = 3k

k = 48 / 3

k = 16

Let's find the cost for 9 or 13 bracelet

y = 12x

y = 16(9) = 144

y = 16(13) = 208

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Answer:

5. [tex]a ( x + y^{2} + z )[/tex]

6. [tex]2a ( x + y + z)[/tex]

7. [tex]4 ( x +4y)[/tex]

8. [tex]-5 ( x + y )[/tex]

9. [tex]7a ( a + b)[/tex]

10. [tex]-2 ( x + 2y + 3z)[/tex]

11. [tex]bx ( a + y)[/tex]

12. [tex]-x (x^{2} + x + 1)[/tex]

this took long but i hope the answers are correct :)

Answer:

1 block is required in the process to balance the scale

Step-by-step explanation:

In order to get the process that will balance the scale, we need to solve the given expression for x as shown;

3x + 1 = x+ 3

Subtract x from both sides

3x+1-x = x+3 - x

3x - x + 1 = 3

2x + 1 = 3

Subtract 1 from both sides

2x + 1 - 1 = 3 -1

2x = 2

Divide both sides by 2

2x/2 = 2/2

x = 1

Hence 1 block is required in the process to balance the scale

The true statement about the polynomial function is (d) 0 relative minimum

From the question, we have the following parameters that can be used in our computation:

f(x) = x³ + 2x² - 1

Differentiate and set the function o 0

So, we have

3x² + 4x = 0

Factor the expression

So, we have

x(3x + 4) = 0

Next, we have

x = 0 or x = -4/3

So, we have

f(0) = (0)³ + 2(0)² - 1 = -1

f(-4/3) = (-4/3)³ + 2(-4/3)² - 1 = 0.2

This means that it has a relative minimum at x = 0

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Answer:

The odds against  a person selected at random from these 39 people testing negative on the test is 92.31%.

Step-by-step explanation:

In the group of 39 randomly selected people:

# of people tested negative: 36

36 / 39 = 92.31%

Answer:

with what

Step-by-step explanation:

a) For this question, we can identify all the symmetric relations from the pairs of R by adding in the pairs that would make the relation symmetric. These pairs are of the form (y, x) where (x, y) is already in the relation. Thus, a symmetric relation R2 on A that contains all pairs of R, and such that R2 ≠ A×A is {(z, b), (b, z), (z, c), (c, z), (d, d), (e, e)}.  b) In order to find an equivalence relation R3 on A which contains all pairs of R, we have to do the following: Check for all pairs in R whether they have the property that xRy and yRx.

If a pair (x, y) is in R and (y, x) is also in R, then we include the pair (x, y) in our equivalence relation. We do this until we have found all pairs that satisfy this condition. Thus, an equivalence relation R3 on A which contains all pairs of R is {(z, z), (b, b), (z, b), (b, z), (d, d), (e, e)}.

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The probability that a randomly chosen customer's drink will be cold is 0.08 or 8%.

To calculate the probability that a randomly chosen customer's drink will be cold, we need to determine the number of customers who ordered a cold drink and divide it by the total number of customers.

From the given data, we can see that there were 8 customers who ordered a cold drink. The total number of customers is 100.

Therefore, the probability that a randomly chosen customer's drink will be cold is:

P(cold) = Number of customers who ordered a cold drink / Total number of customers

P(cold) = 8 / 100

Simplifying the fraction:

P(cold) = 0.08

So, the probability that a randomly chosen customer's drink will be cold is 0.08 or 8%.

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The probability that a randomly chosen customer's drink will be cold is 25/100.

To calculate the probability that a randomly chosen customer's drink will be cold, we need to determine the number of cold drinks out of the total number of customers.

From the given data, we see that there were 25 cold drinks out of 100 total customers.

Therefore, the probability is calculated as the number of cold drinks (8) divided by the total number of customers (100), which results in a probability of 25/100.

Hence, the probability that a randomly chosen customer's drink will be cold is 25/100.

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Answer:

XY=47

Step-by-step explanation:

1. Set up an equation for the perimeter of the rectangle. 2(5y-3)+2(4y)=174.

2. Simplify.

3. Therefore, 18y-6=174.

4. +6 to both sides of the equation. the equation becomes 18y=180.

5. divide 18 to both sides of the equation. y=10.

6. the length of side XY=5y-3. substitute the value of y into the expression: 5(10)-3=50-3=47.

Answer:

See attachment

Step-by-step explanation:

Given

See attachment for complete question

Required

Determine the new model

From the question;

Furaha's model is: 6 by 4

Rahma's model is: 7 by 4

When Furaha's rectangle is pushed next to Rahma's, the new model becomes: (6 + 7) by 4

i.e. 13 by 4

See attachment 2

Cantor's Theorem states that the cardinality of a set A is strictly less than the cardinality of its power set P(A), for every set A. In other words, there is no bijection between A and P(A).

The proof of Cantor's Theorem relies on a diagonalization argument. Suppose there is a bijection f between A and P(A). We can use f to construct a subset B of A that is not in the image of f.

To do this, we define B as follows: for each element x in A, if x is not in the set f(x), then we add x to B. In other words, B contains all elements of A that are not in their corresponding set in P(A) under f.

Now, we show that B is not in the image of f. Suppose that there exists some element y in A such that f(y) = B. Then, we have two cases: either y is in B or y is not in B.

If y is in B, then y is not in f(y), since y was added to B precisely because it is not in its corresponding set in P(A) under f. But this contradicts the assumption that f(y) = B.

If y is not in B, then y is in f(y), since y is not in B precisely because it is in its corresponding set in P(A) under f. But this also contradicts the assumption that f(y) = B.

Therefore, we have shown that B is not in the image of f, which contradicts the assumption that f is a bijection between A and P(A). Thus, there can be no such bijection, and Cantor's Theorem follows.

The consequence of Cantor's Theorem is that there are different sizes of infinity, which has profound implications for mathematics and philosophy. It shows that there are sets that are "larger" than others, and that there is no "largest" infinity. This has led to the development of set theory as a foundational branch of mathematics, and has influenced debates about the nature of infinity in philosophy.

The ScaleIterator class iterates over an iterable, scaling its elements by a given scale factor.

To implement the ScaleIterator class, we can define a custom iterator that takes an iterable and a scale factor as input. The iterator will then iterate over the elements of the iterable and scale each element by multiplying it with the scale factor.

Here's an example implementation in Python:

class ScaleIterator:

   def __init__(self, iterable, scale):

       self.iterable = iterable

       self.scale = scale

   def __iter__(self):

       return self

   def __next__(self):

       element = next(self.iterable)

       scaled_element = element * self.scale

       return scaled_element

The ScaleIterator class has an __init__ method that initializes the iterator with the given iterable and scale factor. It also implements the __iter__ and __next__ methods to make the class iterable. Each time __next__ is called, it retrieves the next element from the underlying iterable, scales it by multiplying with the scale factor, and returns the scaled element.

Using this ScaleIterator, you can iterate over any iterable and obtain scaled elements by specifying the desired scale factor.

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Answer: y = 2/9x + 8 and -2y = 9x + 8

Step-by-step explanation: Hope this help :D

Parallel lines have the same slope so y = 2/9x + 8 and 9y = 2x -18 will be parallel to the line y = 2/9x - 7 so option (B) and (D) will be correct.

Two lines in the same plane that are equally spaced apart and never cross each other are said two lines in the same plane that are equally spaced apart and never cross each other to be parallel lines.

Parallel lines are those lines in which slopes are the same and the distance between them remains constant.

The equation of a linear line is given by

y = mx  + x where m is slope

So,

y = 2/9x - 7 have slope as 2/9

Now since parallel lines have the slope same so all lines whose slope matches with 2/9 will be parallel to this.

So,

y = 2/9x + 8 has slope of 2/9

9y = 2x -18 ⇒ y = 2/9 x - 2 has slope of 2/9

Hence "y = 2/9x + 8 and 9y = 2x -18 will be parallel to the line y = 2/9x - 7"

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