PLZZZZ HELP MEEEE HOMEWORK IS DUE TOMZZZZ

Answer:

no they do not :) :) :)

Answer:

3. y = 0.5(1.075)ˣ

1. y = 200(1.8)ˣ

2. y = 10(0.95)ˣ

Explanation:

The exponential function has the following form

y = a(1 + r)ˣ

Where r is the rate of growth or decay.

If r is positive, it is a rate of growth

If r is negative, it is a rate of decay

For each option, we can write the equation as

y = 0.5(1.075)ˣ

y = 0.5(1 + 0.075)ˣ

Since 0.075 = 7.5% and it is positive, this equation have a rate of growth equal 7.5%

y = 200(1.8)ˣ

y = 200(1 + 0.8)ˣ

Since 0.8 = 80% and it is positive, this equation have a rate of growth equal to 80%

y = 10(0.95)ˣ

y = 10(1 - 0.05)ˣ

Since -0.05 = -5% and it is negative, this equation have a rate of decay equal to 5%

Therefore, the answers are:

3. y = 0.5(1.075)ˣ

1. y = 200(1.8)ˣ

2. y = 10(0.95)ˣ

In a unit vector notation, the net force on the loop is (3.2×10⁻³ N)​​

Vector:

In math vector is the object containing both magnitude and direction

Given,

In the figure, a long straight wire carries a current i1​=30A  and a rectangular loop carries current i2​=20A. Take the dimensions to be a=1 cm, b = 8cm and L = 30cm.

Here we need to find the unit-vector notation for the net force on the loop due to i1​.

Here let's divide the loop into 4 parts i.e, they are witten as,

=> 1−2 , 2−3 , 3−4 , and 4−1

Then the force F on a wire of length L carrying current I in magnetic field of strength B (constant) is written as,

=> F=L(I×B)

Now, the force on part  2−3  and  4−1  is equal but opposite , hence cancelled, so the remaining are

⟹F2−3​+F4−1​=0

Therefore, Fnet​=F1−2​+F3−4​

Then the value of the net force is

=> (3.2×10⁻³ N)​​

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The probability that the number of dropouts next year will be exactly 305 is virtually zero, the probability of less than 305 is 68%, greater than 305 is 32%, and within one standard deviation of 305 is 95%.

Probability of dropouts next year being exactly 305: 0

Probability of dropouts next year being less than 305: 0.68

Probability of dropouts next year being greater than 305: 0.32

Probability of dropouts next year being within one standard deviation of 305: 0.95

The probability that the number of dropouts next year will be exactly 305 is virtually zero. This is because the standard deviation of 50 suggests that the number of dropouts is likely to be different from 305.

The probability that the number of dropouts next year will be less than 305 can be calculated using the normal distribution. The probability that the number of dropouts will be less than 305 is approximately 0.68, or 68%.The probability that the number of dropouts next year will be greater than 305 can be calculated using the normal distribution. The probability that the number of dropouts will be greater than 305 is approximately 0.32, or 32%.The probability that the number of dropouts next year will be within one standard deviation of 305 (i.e. between 255 and 355) can be calculated using the normal distribution. The probability that the number of dropouts will be within one standard deviation of 305 is approximately 0.95, or 95%.

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Answer:

The answer is A

Step-by-step explanation:

An angle measure with an arc length equal to one radius length.

Given,

Radian.

Here,

Radian : An angle measure with an arc length equal to one radius length.

Radian is a measure of angle .

Degree measurements can be converted into radians.

For example,

30° = 30° × π/180°

30° = π/6

Thus radians can be converted into degrees by vice versa .

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The result of subtracting 7x - 9 from 2x² - 11 is 2x² - 7x - 2.

To subtract the expression 7x - 9 from 2x² - 11, we need to distribute the negative sign to every term within the expression 7x - 9, and then combine like terms.

First, let's distribute the negative sign:

2x² - 11 - (7x - 9)

Now, distribute the negative sign to each term within the parentheses:

2x² - 11 - 7x + 9

Next, let's combine like terms:

2x² - 7x - 2

Therefore, the result of subtracting 7x - 9 from 2x² - 11 is 2x² - 7x - 2.

In this expression, the highest power of x is 2, which means it is a quadratic expression. The coefficient of x² is 2, and the coefficient of x is -7. The constant term is -2.

This quadratic expression can be further simplified or factored if needed, but the subtraction process is complete with the result 2x² - 7x - 2.

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Answer:

Step-by-step explanation:

You want the factors that would create the array of tiles shown.

Each column consists of a rectangle and two squares. If we assume a rectangle represents "x" and a square represents "1", then each column is a representation of x + 1 + 1 = x +2.

Each row is three repetitions of the tile in the first column. This means the factor being represented here is 3.

The two factors that are multiplied to give this array of tiles are ...

  3  and  x+2

Their product is ...

  3x +6

__

Additional comment

We suspect that it might be informative to make use of the "View Example" button on the screen shown. It likely would show you the meaning of the symbols, and how rows and columns relate to factors. (Here, we have to guess.)

<95141404393>

Answer:

80

Step-by-step explanation:

The solution to the initial-value problem x(x + 1) dy/dx + xy = 1, y(e) = 1 is y = ln(x + 1) / x.

To solve the given initial-value problem, we can use the method of integrating factors. Rearranging the equation, we have dy/dx + (xy / (x(x + 1))) = 1 / (x(x + 1)).

The integrating factor is given by μ(x) = exp ∫ (xy / (x(x + 1))) dx. Simplifying the integral, we have μ(x) = exp ∫ (1 / (x + 1)) dx = exp(ln(x + 1)) = x + 1.

Multiplying the entire equation by the integrating factor, we obtain (x + 1)dy/dx + xy = (x + 1) / (x(x + 1)).

The left side of the equation can be written as d((x + 1)y)/dx. Integrating both sides with respect to x, we have ∫ d((x + 1)y)/dx dx = ∫ (x + 1) / (x(x + 1)) dx.

Simplifying the right side of the equation, we get ∫ dx / x = ln|x| + C.

Dividing both sides by (x + 1), we have (x + 1)y = ln|x| + C.

Finally, solving for y, we find y = (ln|x| + C) / (x + 1). Using the initial condition y(e) = 1, we can substitute x = e and solve for C to obtain the specific solution y = ln(x + 1) / x.

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Step-by-step explanation:

Let's say first piece is x. First and third ratio is 1:4 so it would be

4x - x = 360

3x = 360

x = 120 Third piece is 120g. Now we just multiply the rest.

2 × 120 = 240g

4 × 120 = 480g, total 840g

Answer:

840 g

Step-by-step explanation:

  Ratio of weight of 3 pieces = 1 : 2 : 4

Weight of 3 pieces = x , 2x , 4x

Weight of third piece - weight of first piece = 360 g

           4x - x = 360

                3x = 360

Divide both sides by 3,

                  x = 360÷ 3

                 x = 120 g

Weight of first piece = x = 120 g

Weight of second piece = 2x = 2*120 = 240g

Weight of third piece = 4x = 4 *120 = 480 g

Weight of the whole cake = 120  + 240 + 480

                                          = 840 g

Answer:

1145

Step-by-step explanation:

830(2) 28/13

​   ^ do that ok??????? plug it in!!!!!!!!

then do u know what u will get? u will get this !!!!!! y = 1145.09631989

round 2 da whole numba and den boom shakalaka B ) i got my question wrong so that i could put the right answer here. bye yall

The number of bacteria doubling every 28 hours will be 1145 after 13 hours.

The formula for exponential growth is y = y₀.e^(kt).

The formula for exponential decay is y = y₀.e^(-kt).

In the case of doubling the growth of bacteria, we can use the formula,

\(y_f = y_0\times2^{\frac{t_r}{t}\), where \(y_f\) represents the final population, \(y_0\) is the initial population, \(t_r\) is the time we are required to determine, and \(t\) represents the time rate growth.

Therefore from the given information, the number of bacteria after 13 hours will be,

\(y_f = 830\times2^{\frac{13}{28}\).

\(y_f = 830\times1.38\).

\(y_f = 1144.86\) or 1145 bacterias.

Q. In a lab experiment, 830 bacteria are placed in a petri dish. The conditions are such that the number of bacteria is able to double every 28 hours. How many bacteria would there be after 13 hours, to the nearest whole number?​

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Answer:

Step-by-step explanation:

Step one:

Given data

AT&T’s plan

monthly charge= $19.99

additional charge per minute= $0.35

let the number of minutes be x

let the total charges be

y=0.35x+19.99----------1

Verizon’s plan

monthly charge= $34.99

additional charge per minute= $0.3

let the number of minutes be x

let the total charges be

y=0.3x+34.99----------2

Step two:

equating the two equations above we have

0.35x+19.99=0.3x+34.99

collect like terms

0.35x-0.3x=34.99-19.99

0.05x=15

divide both sides by 0.05

x=15/0.05

x=300

For the two plans to cost the same, it will take 300 minutes

Answer:

300 Minutes

Step-by-step explanation:

Answer:

arc length ≈ 37.7

Step-by-step explanation:

the arc length is calculated as

arc = circumference of circle × fraction of circle

    = 2πr × \(\frac{135}{360}\) ( r is the radius )

   = 2π × 16 × \(\frac{3}{8}\)

   = 32π × \(\frac{3}{8}\)

  = 4π × 3

  = 12π

  ≈ 37.7 ( to the nearest tenth )

Answer:

42/82 = 21/41 = slope

Step-by-step explanation:

He scored 42 goals in 82 games, so the rate at which he scores is 21/41

Now in each game, he scores goals at this rate, so for 1 game he scores

21/41, for 2 games i.e x=2, number of goals y = (21/41)(2) and so on

so the slope is 21/41

Answer:

m = slope = 0.51

Step-by-step explanation:

Slope = (Change in y-coordinate) / (Change in x-coordinate)

Use these 2 points on the line to find the slope: (0, 0) and (82, 42)

Δy = 42 - 0 = 42.

Δx = 82 - 0 = 82.

Slope = Δy / Δx = 42 / 82 ≈ 0.5122

Answer:

Step-by-step explanation:

The cost of each cell phone case is $7.15, and the cost of each screen protector is $2.25.

To solve this problem, we can create a system of equations.

Let x represent the cost of one cell phone case and y represent the cost of one screen protector.

Then, we can write the following equations:

1x + 2y = 18.95     (equation 1)

2x + 5y = 41.40    (equation 2)

We can solve for x and y by multiplying equation 1 by 2 and subtracting it from equation

2.2x + 5y = 41.40(2 x 1x + 2 x 2y = 2 x 18.95)2x + 5y = 41.4002x + 4y = 37.90

Subtracting equation 1 from equation 2 gives us:

2x + 5y = 41.400- (0.2x + 0.4y = 3.790)

1.8x + 4.6y = 37.61

Now we can solve for y.

1.8x + 4.6y = 37.61

=> 46y = 46.29

=> y = 1.05

Then we can solve for x using equation

1.1x + 2y = 18.95

=> 1x + 2(1.05) = 18.95

=> x = 7.15

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Question:

You order a cell phone case and 2 screen protectors online for a total of $18.95. Your friend orders 2 cell phone cases and 5 screen protectors at the same unit prices for a total of $41.40. What is the cost of each cell phone case? Each screen protector?

It is true that an altitude of a triangle is a line segment drawn from a vertex of the triangle perpendicular to the opposite side (or to the line containing the opposite side).

It forms a right angle with the line containing the opposite side. This altitude splits the triangle into two smaller triangles, and it can also be used to find the area of the triangle. The altitude of a triangle is useful in geometry because it can be used to find the area of the triangle. The area of a triangle can be calculated as half the product of the base (the side to which the altitude is drawn) and the length of the altitude. By drawing an altitude from each vertex of the triangle and calculating the area of each smaller triangle, we can find the total area of the larger triangle. Altitudes also have other important properties in geometry, such as being concurrent at a single point called the orthocenter of the triangle, and being related to the sides of the triangle through the Pythagorean theorem.

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Answer :

A prepaid electricity meter is a Kw/hr (Kilowatt Hour) meter, measuring electrical consumption. The main difference is that this Kw/hr meter counts backwards as the electricity is consumed and has a a relay (an automatic switch) which disconnects the power when the Kw/hr reading on the meter reaches zero.

In a multiple-choice test that has 5 questions, each with 5 possible answers, the probability of guessing all the questions correctly can be found using the formula:p = (1/5) × (1/5) × (1/5) × (1/5) × (1/5) = 1/3125.

The probability of guessing one question correctly is 1/5 since there are five possible answers. Since there are five questions, we multiply the probability by itself five times.

Therefore, the probability of guessing all the questions correctly is 1/3125, which is approximately 0.00032. This means that the chance of guessing all the questions correctly by random chance is very low.

This indicates that one should have studied for the test rather than relying solely on guesswork.

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The radius and height of a real soda can with a double thickness in the top and bottom surfaces that minimize its surface area are approximately 2.89 cm and 13.15 cm, respectively. These dimensions are closer to the dimensions of a real soda can compared to the dimensions obtained in part (a).

a. To minimize the surface area of a cylindrical soda can, we need to find the values of radius and height that minimize the surface area equation.

Let's denote the radius of the can as r and the height as h. The volume of the can is given as 354 cm^3, so we have:

πr^2h = 354

Solving for h, we get:

h = 354 / (π\(r^2\))

The surface area of the can can be calculated as follows:

A = 2πr^2 + 2πrh

Substituting the expression for h in terms of r, we get:

A = 2πr^2 + 2πr(354 / πr^2)

Simplifying:

A = 2πr^2 + 708 / r

To minimize the surface area, we need to find the value of r that makes the derivative of A with respect to r equal to zero:

dA/dr = 4πr - 708 / r^2

Setting dA/dr = 0, we get:

4πr = 708 / r^2

Multiplying both sides by r^2, we get:

4πr^3 = 708

Solving for r, we get:

r = (708 / 4π)^(1/3) ≈ 3.64 cm

Substituting this value of r back into the expression for h, we get:

h = 354 / (π(3.64)^2) ≈ 9.29 cm

Therefore, the radius and height of the cylindrical soda can with minimum surface area and volume of 354 cm^3 are approximately 3.64 cm and 9.29 cm, respectively.

b. Real soda cans do not seem to have an optimal design because their dimensions are not the same as the ones obtained in part (a). The radius of a real soda can is 3.1 cm and the height is 12.0 cm. However, real soda cans have a double thickness in their top and bottom surfaces, which means that their dimensions are not directly comparable to the dimensions of the cylindrical can we calculated in part (a).

To find the dimensions of a real soda can with a double thickness in the top and bottom surfaces that minimize its surface area, we can use the same approach as in part (a), but with the appropriate modification to the surface area equation:

A = 4πr^2 + 708 / r

Setting dA/dr = 0, we get:

8πr^3 = 708

Solving for r, we get:

r = (708 / 8π)^(1/3) ≈ 2.89 cm

Substituting this value of r back into the expression for h, we get:

h = 354 / (π(2.89)^2) ≈ 13.15 cm

Therefore, the radius and height of a real soda can with a double thickness in the top and bottom surfaces that minimize its surface area are approximately 2.89 cm and 13.15 cm, respectively. These dimensions are closer to the dimensions of a real soda can compared to the dimensions obtained in part (a).

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Answer:

Step-by-step explanation:

This is because when you dilate a triangle it gets larger and expands. This means that it changes its position.

The edges of the triangle will get larger so the perimeter will not stay the same but it will change. But, the new perimeter is going to be rationonal to the original one.

The number of waffles can be made from 15 eggs are, 20 waffles.

the waffles can be calculates as follows

4 cups of fluor + 6 eggs +2 tbsp oil = 8 waffles

we need 6 eggs to make 8 waffles

So, the waffles can we make from 15 eggs = \(\frac{8}{6} X 15 = 20\) waffles

Hence, the number of waffles can be made from 15 eggs are 20 waffles.

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The exact measurement could be between 2.7585 and 2.7595 cm.

The absolute error of a measurement is equal to one half the unit of measure. Absolute error is a measure of the difference between the actual value and the estimated or predicted value of a quantity. It is calculated by taking the absolute value of the difference between the actual value (often denoted as A) and the estimated or predicted value (often denoted as P).

Mathematically, the absolute error (AE) can be expressed as:

AE = |A - P|

The measurement is given to the nearest 0.001 cm.

So, the absolute error of the measurement is

\(${\frac{1}{2}}{\big(}0.001{\big)}=0.0005{\mathrm{~cm}}$\)

The exact measurement could be 2.759 ± 0.0005 or

between 2.7585 cm and 2.7595 cm.

0.0005 cm; The exact measurement could be between 2.7585 and 2.7595 cm.

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The new triangle A'B'C' is formed by translating triangle ABC 666 units to the right and 222 units down. The new coordinates for the points are A' (664, -219), B' (669, -221), and C' (667, -225).

Based on the information provided, we have a triangle ABC with point A at (-2, 3), point B at (3, 1), and point C at (1, -3). We are asked to translate this triangle to create a new triangle A'B'C' by moving it 666 units to the right and 222 units down.

To translate a figure on a coordinate plane, we add or subtract the same value to each coordinate. In this case, we will add 666 to the x-coordinate and subtract 222 from the y-coordinate.

For point A:
Original x-coordinate: -2
Translated x-coordinate: -2 + 666 = 664
Original y-coordinate: 3
Translated y-coordinate: 3 - 222 = -219

So, the new coordinates for point A' are (664, -219).

Similarly, we can find the new coordinates for points B' and C' by applying the same translation.

For point B:
Original x-coordinate: 3
Translated x-coordinate: 3 + 666 = 669
Original y-coordinate: 1
Translated y-coordinate: 1 - 222 = -221

So, the new coordinates for point B' are (669, -221).

For point C:
Original x-coordinate: 1
Translated x-coordinate: 1 + 666 = 667
Original y-coordinate: -3
Translated y-coordinate: -3 - 222 = -225

So, the new coordinates for point C' are (667, -225).

In summary, the new triangle A'B'C' is formed by translating triangle ABC 666 units to the right and 222 units down. The new coordinates for the points are A' (664, -219), B' (669, -221), and C' (667, -225).

Please note that the properties of the triangle (such as side lengths, angles, and orientation) remain unchanged during translation.

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The translation of triangle abc to triangle a'b'c' retains the original triangle's side lengths, angles, and orientation. The new points for triangle a'b'c' can be found by adding 6 to the x-values and subtracting 2 from the y-values of triangle abc's points, resulting in A'(4,1), B'(9,-1) and C'(7,-5).

In a translation, the distance and orientation between points within the shape are conserved. So, the properties that remain unchanged in the translation of △abc to △a'b'c' are the side lengths, the angles, and the orientation.

So, the new points are A'(-2+6, 3-2), B'(3+6, 1-2), and C'(1+6, -3-2), which simplifies to A'(4,1), B'(9,-1), and C'(7,-5).

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Answer:

2, 2/5 + 3, 1/10

2/5 + 3 = 3 2/5

Step-by-step explanation:

The given statement (A-B) ∩ (C-B) = A - (B ∪ C) is False , and the counter example is given below .

In the question ,

it is given that ,

(A-B) ∩ (C-B) = A - (B ∪ C)  ,

we use Boolean algebra to prove it ,

Solving LHS first ,

= (A-B) ∩ (C-B)

= A ∩ B' ∩ C ∩ B'          .....because (A - B) = A ∩ B'

= A ∩ B' ∩ C                  ..... because B' ∩ B' = B'

Solving RHS ,

we get ,

= A - (B ∪ C)

= A ∩ (B ∪ C)'            ....because (A - B) = A ∩ B'  ,

= A ∩ (B' ∩ C')            .....by DE Morgan's Law

= A ∩ B' ∩ C'

we see that , LHS ≠ RHS ,

So , the statement is False .

The counter Example is ,

Let A = { 1, 2, 3} , B = { 1, 2, 4} , C = { 2, 4, 5}

LHS is = (A - B) ∩ (C - B)

Putting the values,

LHS = { 3 } ∩ { 5 } = ∅

and  RHS = A - (B υ C)

Putting  the  values,

RHS = { 1, 2, 3} - { 1, 2, 4, 5}

= { 3 }

So , LHS ≠ RHS

Therefore , we have proved that the given statement is false using a counter example .

The given question is incomplete , the complete question is

Prove that each statement is true and find a counterexample for each statement that is false. assume all sets are subsets of universal set u .

For all sets A,B,C,

(A-B) ∩ (C-B) = A - (B ∪ C)

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Answer:

A) \(y+7=-\frac{1}{4}(x-4)\)

Step-by-step explanation:

The point-slope from equation is:

\((y-y_{1})=m(x-x_{1})\\\)

Where the coordinate given is:

\((x_{1},y_{1})\)

m = \(-\frac{1}{4}\)

well, since the y-intercept is at -5, or namely when the line hits the y-axis is at -5, that's when x = 0, so the point is really (0 , -5), and we also know another point on the line, that is (-1 ,6), to get the equation of any straight line, we simply need two points off of it, so let's use those two

\(\stackrel{y-intercept}{(\stackrel{x_1}{0}~,~\stackrel{y_1}{-5})}\qquad (\stackrel{x_2}{-1}~,~\stackrel{y_2}{6}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{6}-\stackrel{y1}{(-5)}}}{\underset{run} {\underset{x_2}{-1}-\underset{x_1}{0}}} \implies \cfrac{6 +5}{-1} \implies \cfrac{ 11 }{ -1 } \implies - 11\)

\(\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-5)}=\stackrel{m}{- 11}(x-\stackrel{x_1}{0}) \implies y +5 = - 11 ( x -0) \\\\\\ y+5=-11x\implies {\Large \begin{array}{llll} y=-11x-5 \end{array}}\)

Answer:

35 - n

Step-by-step explanation:

a number n = "n"

less than = "minus or -"

35 = 35

Ashley is exhibiting a(n) stereotyping.

Ashley is exhibiting a cognitive bias known as "stereotyping." Stereotyping refers to the process of categorizing individuals into groups based on certain characteristics and assuming that all members of that group possess similar traits or behaviors. In this case, Ashley has developed a negative stereotype about athletes based on her exposure to movies portraying them as mean and aggressive.

This stereotype is likely a result of media influence and the limited exposure Ashley has had to real-life athletes. The media often exaggerates certain characteristics or behaviors of athletes to create more dramatic storylines. Unfortunately, this portrayal can create a distorted perception of athletes in the minds of viewers like Ashley.

By generalizing the negative traits seen in movies to all athletes she meets, Ashley is engaging in a cognitive shortcut known as "generalization." She is assuming that the characteristics depicted in movies accurately represent the entire group of athletes, which is an oversimplification and an unfair judgment.

It is important to recognize that individuals within a group, such as athletes, vary greatly in terms of personality, behavior, and values. Stereotyping can lead to prejudice and discrimination, preventing Ashley from forming unbiased opinions and potentially missing out on meaningful connections and relationships.

To overcome this bias, Ashley should strive to challenge her stereotypes and approach each athlete she encounters with an open mind. By engaging in personal interactions and gaining a broader understanding of athletes' diverse experiences and personalities, Ashley can break free from the limitations of stereotyping and form more accurate judgments based on individual merit.

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