I NEED HELP ASAP I WILL GIVE ALL MY POINTS AWAY FOR THIS

Answer:

Step-by-step explanation:

Original 873  New 781

The new went down by about 10.5%

873*10.5%= 91.67

873-91.67= 781.33

It decreased 10.5%

Answer:

0.72

Step-by-step explanation:

7.25+2.35=9.6

9.6÷100=0.096

0.096×7.5=0.72 the tax

The length of WU in the given two intersecting chords is determined as 8.

The intersecting chord theorem, also known as the power of a point theorem, is a geometrical theorem that states that if two chords of a circle intersect at a point, then the product of the lengths of one chord segment is equal to the product of the lengths of the other chord segment.

By applying intersecting chord theorem, the length of WU is calculated as;

UV x UW = UT x UL

3 (3 + x - 2) = 4(4 + 2)

3(x + 1) = 4(6)

3x + 3 = 24

3x = 21

x = 21/3

x = 7

UW = WU = (3 + x - 2)

= 3 + 7 - 2

= 10 - 2

= 8

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Answer: To calculate the percent decrease of water in the tank, we can use the following formula:

Percent decrease = (Initial value - Final value) / Initial value x 100%

In this case, the initial value of water in the tank is 5 inches and the final value is 3 inches. So, the percent decrease is:

(5 - 3) / 5 x 100% = 2 / 5 x 100% = 40%

So, the percent decrease of water in the tank is 40%.

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

True , Every matrix transformation is a linear transformation.

Is there a linear transformation for every matrix operation?

Despite the fact that every linear transformation is a matrix transformation, not all linear transformations are matrix transformations.      

                                    Because of this, it's possible that we'll encounter a linear transformation in which we're unable to locate a matrix to carry out the mapping.

What alteration does matrix entail?

In a two-dimensional or three-dimensional space, the transformation matrix converts one vector into another vector, which may be comprehended geometrically.

                                    Stretching, squeezing, rotation, reflection, and orthogonal projection are some of the often utilized transformations.

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Answer:

Im not sure about this but maybe its $10.15

Step-by-step explanation:

8.25 x 5= 41.25

92- 41.25=50.75

50.75 divide by 5 = 10.15

The probability that none of the households are tuned to 50 Minutes is 0.4693. The probability that at least one household is tuned to 50 Minutes is 0.5307. The probability that at most one household is tuned to 50 Minutes is 0.5307. Since the probability of at most one household being tuned to 50 Minutes is relatively high (0.5307), it suggests that the 24% share value might be inaccurate.

To find the probability that none of the households are tuned to 50 Minutes, we need to calculate the complement of at least one household being tuned to the show. The complement is 1 minus the probability of at least one household tuning in. Therefore,

P(none) = 1 - P(at least one) = 1 - 0.5307 = 0.4693.

Similarly, to find the probability of at least one household being tuned to 50 Minutes, we can calculate the complement of none of the households tuning in. This is simply 1 minus the probability of none of the households tuning in. Therefore, P(at least one) = 1 - P(none) = 1 - 0.4693 = 0.5307.

The probability that at most one household is tuned to 50 Minutes is the sum of the probabilities of none and only one household tuning in. Since the probability of at least one household tuning in is 0.5307, the probability of at most one household tuning in is also 0.5307.

Since the probability of at most one household being tuned to 50 Minutes is relatively high (0.5307), it suggests that the 24% share value might be inaccurate. If the actual share value were 24%, we would expect a lower probability of at most one household tuning in. However, since the probability is relatively high, it indicates that the share value might be wrong or inaccurate. Further investigation or a larger sample size might be necessary to confirm the accuracy of the share value.

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Answer: 15.1

Step-by-step explanation:

15.2

- 0.1

15.1

D) A^2 = A + 1 this equation represents diagonal matrices with the same eigenvalues on the diagonal.

Let λ be an eigenvalue of the matrix A, and let v be the corresponding eigenvector. Since A is diagonalizable, we can write A = PDP^(-1), where D is the diagonal matrix containing the eigenvalues on the diagonal, and P is the matrix whose columns are the eigenvectors.

We know that A^2 = A + 1, so we can substitute A with its diagonalizable form:

(PDP^(-1))^2 = PDP^(-1) + 1.

Expanding the square and applying the matrix multiplication rules, we get:

PD^2P^(-1) = PDP^(-1) + 1.

Since D is a diagonal matrix, D^2 will have the eigenvalues squared on the diagonal. Therefore, we have:

P(D^2)P^(-1) = PDP^(-1) + 1.

Multiplying both sides by P^(-1) on the right, and by P on the left, we obtain:

D^2 = D + 1.

This equation holds because P^(-1)P = I (the identity matrix), and D and D^2 are diagonal matrices with the same eigenvalues on the diagonal.

Therefore, the correct answer is D) A^2 = A + 1.

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Answer:

a. False

b. True

c. True

d. False

Step-by-step explanation:

a. Is false because it says the equivalent ratios of centimeters and feet. When it is comparing centimeters and inches

b. Is true because the unit rate in this double number line is 2.54 centimeters per inch

c. Is true because it shows on the double number line that 6 inches is equal to 15.54 centimeters

d. Is false, although the fact that 0.039 inches are in a centimeter is true, it does not show that rate in the double number line

I hope this helps :)

Answer:

a. True

b. True

c. True

d. False

Step-by-step explanation:

a. 30.48 centimeters is equal to one foot (12 inches)

b. The unit rate means how many centimeters per inch

c. 6 inches on the number line is equal to 15.24 centimeters

d. If you divide 1 by 2.54 the answer is 0.39 not 0.039

The meaning of the estimated probability is that; there is 25% chance that the email will be spam.

Probability is the chance that an event will happen or occur. Now, we are told that you obtained an estimated probability of 0.75.

Now, from the way the question is put forth, we can say that the probability that the email will not be spam is 0.75 or 75%.

Thus, we can conclude that the meaning of the given probability when placed in context of what you are trying to predict is that;

There is 25% chance that the email will be spam.

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The correct choice is A. The resulting matrix is

\(\[\begin{array}{rrrr}0 & 5 & 7 & -10 \\4 & 8 & 2 & 1 \\-8 & 2 & 3 & -7 \\\end{array}\]\)

To perform the indicated operation, we need to subtract the second matrix from the first matrix. The matrices must have the same dimensions to be subtracted.

Given matrices:

\(\[ \begin{array}{rrrr}2 & 8 & 13 & 0 \\7 & 4 & -2 & 5 \\1 & 2 & 1 & 10 \\\end{array}\]\)

and

\(\[ \begin{array}{rrrr}2 & 3 & 6 & 10 \\3 & -4 & -4 & 4 \\9 & 0 & -2 & 17 \\\end{array}\]\)

These matrices have the same dimensions, so we can subtract them element by element.

Subtracting the corresponding elements, we get:

\(\[ \begin{array}{rrrr}2-2 & 8-3 & 13-6 & 0-10 \\7-3 & 4-(-4) & -2-(-4) & 5-4 \\1-9 & 2-0 & 1-(-2) & 10-17 \\\end{array}\]\)

Simplifying the subtraction, we have:

\(\[ \begin{array}{rrrr}0 & 5 & 7 & -10 \\4 & 8 & 2 & 1 \\-8 & 2 & 3 & -7 \\\end{array}\]\)
Therefore, the resulting matrix is:
\(\[ \begin{array}{rrrr}0 & 5 & 7 & -10 \\4 & 8 & 2 & 1 \\-8 & 2 & 3 & -7 \\\end{array}\]\)

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The exponential model that calculates the concentration of bacteria after x weeks can be represented by the equation B(x) = 2.1 million * (3^x), the concentration after 1.6 weeks would be approximately 14.87 million bacteria per milliliter.

This equation assumes that the concentration triples each week, starting from the initial concentration of 2.1 million bacteria per milliliter.

To estimate the concentration after 1.6 weeks, we can substitute x = 1.6 into the exponential model. B(1.6) = 2.1 million * (3^1.6) ≈ 14.87 million bacteria per milliliter. Therefore, after 1.6 weeks, the estimated concentration of bacteria in the river would be approximately 14.87 million bacteria per milliliter.

The exponential model B(x) = 2.1 million * (3^x) represents the concentration of bacteria after x weeks, where the concentration triples each week. By substituting x = 1.6 into the equation, we estimate that the concentration after 1.6 weeks would be approximately 14.87 million bacteria per milliliter.

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The value of the entrepreneur's share of the firm's equity would be $2 million in case (a) without leverage and $1.5 million in case (b) with leverage.

To calculate the total market value of the firm without leverage, we add the initial capital provided by investors ($2 million) to the potential value of the technology ($30 million). Therefore, the total market value of the firm without leverage is $2 million + $30 million = $32 million.

According to the Modigliani-Miller (MM) theorem, when the entrepreneur borrows $1 million, the firm's total market value remains the same. To raise the additional $1 million needed, the entrepreneur would need to sell a fraction of the firm's equity. This fraction can be calculated as the additional capital needed divided by the total market value of the firm without leverage. So, $1 million / $32 million = 0.03125, which is equivalent to 3.125%. Therefore, the entrepreneur would need to sell approximately 3.125% of the firm's equity to raise the additional $1 million.

In case (a) without leverage, the entrepreneur's share of the firm's equity is 50% of the total market value, which is $32 million * 50% = $16 million. In case (b) with leverage, the total market value of the firm remains $32 million, but the entrepreneur's share of the equity decreases due to the additional borrowing. The entrepreneur's share would be 50% of $32 million - $1 million (the borrowed amount) = $15 million. Therefore, in case (a), the entrepreneur's share is $16 million, and in case (b), it is $15 million.

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The level of measurement for the variable size of soft drinks and popcorn combos that come in sizes that are small, medium, large, and jumbo sold by a movie theater concession stand is "ordinal level of measurement."Explanation:The four primary levels of measurement are nominal, ordinal, interval, and ratio.

The nominal level of measurement is the lowest, and the ratio level of measurement is the highest. The level of measurement for the variable size of soft drinks and popcorn combos sold by a movie theater concession stand is ordinal.The variable size of soft drinks and popcorn combos that come in sizes that are small, medium, large, and jumbo sold by a movie theater concession stand is measured using an ordinal scale

. It indicates that the variable's levels are ranked in a specific order or sequence. The sizes can be ranked as small, medium, large, and jumbo, with jumbo being the highest level of measurement. The difference between each level of the ordinal level of measurement is undefined, which means that the difference between small, medium, large, and jumbo cannot be established using the ordinal level of measurement. Therefore, the variable size of soft drinks and popcorn combos is measured at an ordinal level of measurement.

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Angle-Angle-Side (AAS) Theorem has two sides and a non-included angle.

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The effective interest on £2000 at a 3% interest rate compounded quarterly over a period of 4 years is approximately £245.15.

To calculate the effective interest, we need to use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:

A = the future value of the investment (including interest)

P = the principal amount (initial investment)

r = the annual interest rate (as a decimal)

n = the number of compounding periods per year

t = the number of years

In this case, the principal amount (P) is £2000, the annual interest rate (r) is 3% (or 0.03 as a decimal), the compounding is done quarterly (n = 4), and the investment period (t) is 4 years.

Plugging the values into the formula:

A = £2000(1 + 0.03/4)^(4*4)

= £2000(1 + 0.0075)^16

= £2000(1.0075)^16

≈ £2000(1.126825)

Calculating the future value:

A ≈ £2253.65

To find the effective interest, we subtract the principal amount from the future value:

Effective Interest = £2253.65 - £2000

≈ £253.65

Therefore, the effective interest on £2000 at a 3% interest rate compounded quarterly after 4 years is approximately £253.65.

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Answer:

7/12

Step-by-step explanation:

change in y / change in x

Answer:

m∠ABD = 114°

Step-by-step explanation:

Given measurements of interior angles are:

m∠D = 2n°

m∠C = 60°

m∠ABD = (4n+6)°

The measurement of exterior angle of a triangle is equal to the sum of two opposite interior angles.

This can be mathematically expressed as:

m∠ABD = m∠C+m∠D

Putting the respective values

\(4n+6 = 2n+60\\4n-2n+6 = 60\\2n+6 = 60\\2n = 60-6\\2n = 54\\\frac{2n}{2} = \frac{54}{2}\\n = 27\)

Putting n=27 in (4n+6)°

\(=4(27) + 6\\= 108+6 = 114\)

Hence,

m∠ABD = 114°

The within-group estimate of variance is the estimate of the variance of the population of individuals based on the variation among the scores in each of the actual groups studied.

The within-groups estimate of variance is the estimate of the variance of the population of individuals based on the variation among the:
Scores in each of the actual groups studied.
This estimate represents the variation within each group and helps in understanding the population's variance by looking at individual differences within the groups.

The estimated within-group variance is the sum of the within-group variances for each group in the model. Effectively, this is the sum of the variance of each value (j) from its group (i) divided by the sample size minus one.

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Answer: quadratic

Step-by-step explanation:

The given polynomial is a quadratic polynomial with two terms.

The given expression is:

\(2p^{2} -2p\)

A quadratic polynomial is a single variable polynomial with the maximum power of the variable as 2.

Maximum power of p in the given expression =2

So, the given polynomial is a quadratic polynomial.

Hence, the given polynomial is a quadratic polynomial with two terms.

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The number of values that are possible for Laila's score on the last test are; 4 values

We are told that Laila received the same score on the first four tests, and she received a higher score on the last test.

Now, let the equal scores be x and let the higher score be y. Thus, if the average score was 82, then it means that;

4x + y = (82 * 5)

4x + y = 410

Now, The value y will definitely have to be greater than 82, because if that was not the case, she would receive the same score on her last test.

In addition, the greatest value for y is 98 because if that was not the case, it  would make x a decimal.

Thus, only 4 numbers can work, which are 86, 90, 94 and 98. This means we conclude that there are only 4 possible numbers.

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Answer:

x = 0

Step-by-step explanation:

linear equation y = mx + b, where m is the slope and b is the y intercept when x is 0.

m = change in y/change in x = -8-7/0 = undefine

so line is vertical at x = 0

The average velocity from t = 2s to t = 4s would be - 48 ft/s.

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.

Given is that an object is thrown upward with initial velocity of 48 feet per second from a high of 120 feet. The height of the object t seconds after it is thrown is given by h(t) = - 16t² + 48t + 120.

Average rate of change of velocity with time is called average velocity. Mathematically -

v{avg.} = Δx/Δt                                                         .... Eq { 1 }

Δx = x(4) - x(2)

Δx = - 16(4)² + 48(4) + 120 - {- 16(2)² + 48(2) + 120}

Δx = - 96

Δt = 4 - 2 = 2

So -

v{avg.} = Δx/Δt = -96/2 = - 48 ft/s

Therefore, the average velocity from t = 2s to t = 4s would be - 48 ft/s.

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Answer:x=0,5

Step-by-step explanation:

6x -1/2=1

6x-1=1.2

6x-1=2

6x=2+1

6x=3

x=3/6

x=0,5

The response y(t) graphically, we can first plot the individual functions h(t) and x(t) on a graph, and then determine their convolution to obtain y(t). Let's go step by step:

Plotting h(t):

The function h(t) is defined as h(t) = [u(t-1) - u(t-4)].

The unit step function u(t-a) is 0 for t < a and 1 for t ≥ a. Based on this, we can plot h(t) as follows:

For t < 1, h(t) = [0 - 0] = 0

For 1 ≤ t < 4, h(t) = [1 - 0] = 1

For t ≥ 4, h(t) = [1 - 1] = 0

So, h(t) is 0 for t < 1 and t ≥ 4, and it jumps up to 1 between t = 1 and t = 4. Plotting h(t) on a graph will show a step function with a jump from 0 to 1 at t = 1.

Plotting x(t):

The function x(t) is defined as x(t) = t[u(t) - u(t-2)].

For t < 0, both u(t) and u(t-2) are 0, so x(t) = t(0 - 0) = 0.

For 0 ≤ t < 2, u(t) = 1 and u(t-2) = 0, so x(t) = t(1 - 0) = t.

For t ≥ 2, both u(t) and u(t-2) are 1, so x(t) = t(1 - 1) = 0.

So, x(t) is 0 for t < 0 and t ≥ 2, and it increases linearly from 0 to t for 0 ≤ t < 2. Plotting x(t) on a graph will show a line segment starting from the origin and increasing linearly with a slope of 1 until t = 2, after which it remains at 0.

Obtaining y(t):

To obtain y(t), we need to convolve h(t) and x(t). Convolution is an operation that involves integrating the product of two functions over their overlapping ranges.

In this case, the convolution integral can be simplified because h(t) is only non-zero between t = 1 and t = 4, and x(t) is only non-zero between t = 0 and t = 2.

The convolution y(t) = h(t) * x(t) can be written as:

y(t) = ∫[1,4] h(τ) x(t - τ) dτ

For t < 1 or t > 4, y(t) will be 0 because there is no overlap between h(t) and x(t).

For 1 ≤ t < 2, the convolution integral simplifies to:

y(t) = ∫[1,t+1] 1(0) dτ = 0

For 2 ≤ t < 4, the convolution integral simplifies to:

y(t) = ∫[t-2,2] 1(t - τ) dτ = ∫[t-2,2] (t - τ) dτ

Evaluating this integral, we get:

\(y(t) = 2t - t^2 - (t - 2)^2 / 2,\) for 2 ≤ t < 4

For t ≥ 4, y(t) will be 0 again.

Maximum value of y(t):

To find the value of t at which y(t) reaches its maximum value, we need to examine the expression for y(t) within the valid range 2 ≤ t < 4. We can graphically determine the maximum by plotting y(t) within this range and identifying the peak.

Plotting y(t) within the range 2 ≤ t < 4 will give you a curve that reaches a maximum at a certain value of t. By visually inspecting the graph, you can determine the specific value of t at which y(t) reaches its maximum.

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Answer:

Common ratio = 12.

Step-by-step explanation:

2nd term = a1r and 3rd = a1r^2

So (a1)^2 r^3 = 972

a1 = 3/4, so

(3/4)^2 r^3 = 972

r^3 = 972 / 9/16

r^3 = 972*16/9 = 1728

r = 12.

===================================================

Explanations:

Answer:

A, B, D

Step-by-step explanation:

Right on edge 22