lol my last one-

Simplify.

−5(1.9x−4.32)+0.7

A
−8.8x+21.6
B
−9.5x+22.3
C
−9.5x−3.62
D
−8.8x−20.9

Answer:

30%

Step-by-step explanation:

18/60 = .3 × 100% = 30%

Answer  7/36......

Explanation

The probability that the sample proportion is between 0.2 and 0.42 can be calculated using the standard normal distribution.

To calculate the probability, we need to assume that the sample proportion follows a normal distribution. This assumption holds true when the sample size is sufficiently large and the conditions for the central limit theorem are met.

First, we need to calculate the standard error of the sample proportion. The standard error is the standard deviation of the sampling distribution of the sample proportion and is given by the formula sqrt(p(1-p)/n), where p is the estimated proportion and n is the sample size.

Next, we convert the sample proportion range into z-scores using the formula z = (x - p) / SE, where x is the given proportion and SE is the standard error. In this case, we use z-scores of 0.2 and 0.42.

Once we have the z-scores, we can use a standard normal distribution table or a statistical software to find the corresponding probabilities. The probability of the sample proportion falling between 0.2 and 0.42 is equal to the difference between the two calculated probabilities.

Alternatively, we can use the z-table to find the individual probabilities and subtract them. The z-table provides the cumulative probabilities up to a certain z-score. By subtracting the lower probability from the higher probability, we can find the desired probability.

In conclusion, the probability that the sample proportion is between 0.2 and 0.42 can be calculated using the standard normal distribution and z-scores. This probability represents the likelihood of observing a sample proportion within the specified range.

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Step-by-step explanation:

Let ABC be an isosceles triangle with sides AC and BC of equal length.                

We need to prove that the medians AD and BE are of equal length.

Consider the triangles ADC and BEC.

They have two congruent sides that include congruent angles.

Indeed, AC = BC by the condition, because the triangle ABC is isosceles.

Since the lateral sides AC and BC are of equal length, their halves EC

and DC are of equal length too: EC = DC.

Finally, the angle ECD is the common angle.

Thus, the triangles ADC and BEC are congruent, in accordance to the

postulate P1 (SAS) (see the lesson Congruence tests for triangles of the

topic Triangles in the section Geometry in this site).

Hence, the medians AD and BE are of equal length as the corresponding sides

of these triangles.

The proof is completed.

The total number of student that plotted the number of book they read is 18.

A dot blot the caption Book Read Over the Summer goes from 0 to 7. 0 ha 1 dot, 1 ha 3 dot, 2 ha 6, 3 ha 2, 4 ha 3, 5 ha 1 dot, 6 ha 2, and 7 ha 0 dot are the numbers. Using a dot plot

the total number of students who tracked how many books they read

add total dots  

1 dot + 3 dot +  6 dot +  2 dot + 3 dot +1 dot + 2 dot + 0 dot = 18.

The total number of student that plotted the number of book they read is 18.

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You should pay approximately $10,117.09 initially to secure the annuity and receive annual payments of $1500 over the 9-year period.

To find the cost of the annuity, we need to calculate the present value of the future payments. The present value represents the current worth of future cash flows, taking into account the interest earned or charged over time. In this case, we'll calculate the present value of the $1500 payments using compound interest.

The formula to calculate the present value of an annuity is:

PV = PMT × [1 - (1 + r)⁻ⁿ] / r

Where:

PV is the present value of the annuity (the amount you should pay initially)

PMT is the payment amount received annually ($1500 in this case)

r is the interest rate per period (6.28% or 0.0628)

n is the total number of periods (9 years)

Let's substitute the values into the formula:

PV = $1500 × [1 - (1 + 0.0628)⁻⁹] / 0.0628

Calculating this expression:

PV = $1500 × [1 - 1.0628⁻⁹] / 0.0628

PV = $1500 × [1 - 0.575255] / 0.0628

PV = $1500 × 0.424745 / 0.0628

PV ≈ $10117.09

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The average daily rate is calculated by dividing the total rooms revenue by the total number of rooms sold. In this case, the average daily rate is (option) $114.63.

The average daily rate is a measure of the average amount of money that a hotel is able to generate per room per day. It is calculated by dividing the total rooms revenue by the total number of rooms sold. In this case, the total rooms' revenue was $75,884 and the total number of rooms sold was 662, which gives us an average daily rate of $114.63. This is a useful measure for hotels to gauge the performance of their business and to set pricing accordingly. It also helps hotels identify opportunities for increasing revenue, such as offering discounts or promotions to attract more customers.

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Answer:

B.

Step-by-step explanation:

a + 6 = 22 - 7

a + 6 = 15

a + 6 - 6 = 15 - 6

a = 9

Answer:

You pay 14.85

You save 12.15

Step-by-step explanation:

Trust

Answer:

(3, 1)

Step-by-step explanation:

Answer:

(1st option) x>-3

Step-by-step explanation:

therefore, x is greater than negative three

x>-3

Answer:

$ 7.00

Step-by-step explanation:

$10.75 - $3.67 = $7.08

7.08 is closest to 7

$ 7.00

Hope this helps! :)

Please mark brainiest

Answer:

were is the pic I cant answer lik

Answer:

A.) $10,400

Contribution every payday = $60

Pay periods in a year = 26

Step-by-step explanation:

Assume her salary, that is total cost = y

Percentage deduction 15% of total cost

biweekly paychecks = $60

Therefore, 15% of y = $60

(15/100)y = 60

15y = 6000

y = 400

Total value of contribution:

$400 × number of biweeks in a year

If number of weeks in a year = 52

No of bi-weeks = 52/2 = 26

$400 × 26 = $10400

Answer:

the correct answer is $9,750.00

got it right

Step-by-step explanation:

To find the probability that a caller will be assisted in less than 1.5 minutes, we can use the normal distribution and the given average and standard deviation.  Using the Z-score formula, we can calculate the Z-score for 1.5 minutes based on the average and standard deviation provided.

The Z-score is defined as (X - μ) / σ, where X is the value we want to find the probability for, μ is the mean, and σ is the standard deviation. For this case, X = 1.5 minutes, μ = 2.5 minutes, and σ = 0.5 minutes. Plugging these values into the formula, we get (1.5 - 2.5) / 0.5 = -2. To find the probability corresponding to this Z-score, we can consult a standard normal distribution table or use a calculator. The Z-score of -2 corresponds to a probability of approximately 0.0228. Therefore, the correct answer is "0.0228," representing the probability that a caller will be assisted in less than 1.5 minutes.

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1) dy/da = y(1 - y) , because y = 1 / (1 + e⁽⁻ᵅ⁾), so 1 - y = e⁽⁻ᵅ⁾ / (1 + e⁽⁻ᵅ⁾ )

2) the minimum of G(p) occurs at the points p = 0 and p = 1.

1) If y = sigmoid(a), then y = 1 / (1 + e⁽⁻ᵅ⁾).

To find dy/da, we need to take the derivative of y with respect to a.

dy/da = e⁽⁻ᵅ⁾ / (1 + e⁽⁻ᵅ⁾)²= y(1 - y)

This is because:

- The derivative of 1 / (1 + e⁽⁻ᵅ⁾) is e⁽⁻ᵅ⁾ / (1 + e⁽⁻ᵅ⁾)²

- y = 1 / (1 + e⁽⁻ᵅ⁾), so 1 - y = e⁽⁻ᵅ⁾ / (1 + e⁽⁻ᵅ⁾ )

- Therefore, dy/da = y(1 - y)

2) Gini's index, G(p), is used to measure inequality and is defined as G(p) = 1 - (p² + (1-p)²), where 0 <= p <= 1.

To maximize G(p), we need to find the point where its derivative with respect to p is zero:

dG(p)/dp = -2p - 2(1-p) = 0

Solving for p, we get p = 0.5

Thus, Gini's index is maximized at p = 0.5. For the minimum of G(p), we consider the endpoints, which are p = 0 and p = 1.

In both cases, G(p) = 1 - (1² + 0²) = 0.

So, the minimum of G(p) occurs at the points p = 0 and p = 1.

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Answer:

my answer is A

Step-by-step explanation:

if you work out the equation where you know that at the x intercept y=0 you will find A to be true

The quotient include the following: D. \(\frac{x(2x-3)}{7}\)

In Mathematics and Geometry, a quotient is a mathematical expression that is simply used to represent the division of a number (numerator) by another number (denominator).

Based on the information provided above, we can logically deduce the following mathematical expression;

\(\frac{2x-3}{x} \div \frac{7}{x^2}\)

By rearranging the mathematical expression using the multiplication operation, we have:

\(\frac{2x-3}{x} \times \frac{x^{2} }{7}\\\\2x-3 \times \frac{x }{7}\\\\\frac{x(2x-3)}{7}\)

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let's move like the crab, backwards, let's get hmmm EF first

\(\begin{array}{llll} \textit{using the pythagorean theorem} \\\\ a^2+o^2=c^2\implies o=\sqrt{c^2 - a^2} \end{array} \qquad \begin{cases} c=\stackrel{hypotenuse}{17}\\ a=\stackrel{adjacent}{10}\\ o=\stackrel{opposite}{EF} \end{cases} \\\\\\ EF=\sqrt{ 17^2 - 10^2}\implies EF=\sqrt{ 189 }\implies EF\approx 13.7 \\\\[-0.35em] ~\dotfill\)

\(\sin( F )=\cfrac{\stackrel{opposite}{10}}{\underset{hypotenuse}{17}} \implies \sin^{-1}(~~\sin( F )~~) =\sin^{-1}\left( \cfrac{10}{17} \right) \\\\\\ F =\sin^{-1}\left( \cfrac{10}{17} \right)\implies F \approx 36^o \\\\[-0.35em] ~\dotfill\\\\ \cos(D )=\cfrac{\stackrel{adjacent}{10}}{\underset{hypotenuse}{17}} \implies \cos^{-1}(~~\cos( D )~~) =\cos^{-1}\left( \cfrac{10}{17} \right) \\\\\\ D =\cos^{-1}\left( \cfrac{10}{17} \right)\implies D \approx 54^o\)

Make sure your calculator is in Degree mode.

Answer: -23

Step-by-step explanation:

Answer:

0.5

Step-by-step explanation:

-15=-30x

-15/-30=0.5

The range of h include the following: {-4, -3, 0, 5}.

In Mathematics and Geometry, a range is the set of all real numbers that connects with the elements of a domain.

Based on the information provided about the quadratic function, the range can be determined as follows:

h(x) = x² + 2x - 3

h(x) = -1² + 2(-1) - 3

h(x) = -4

h(x) = x² + 2x - 3

h(x) = 0² + 2(0) - 3

h(x) = -3

h(x) = x² + 2x - 3

h(x) = 1² + 2(1) - 3

h(x) = 0

h(x) = x² + 2x - 3

h(x) = 2² + 2(2) - 3

h(x) = 5

Therefore, the range can be rewritten as {-4, -3, 0, 5}.

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The evaluated probabilities for the given question are 0.20 for the men who asked for promotion, 0.59 for the men who received the promotion when asked, and  0.118 for men who asked for promotion and received.under the condition that from the men interviewed  20% had asked for a promotion and 59% of the men who had asked for a promotion and  received.
Then,
P(man asked for a promotion)
= 20/100
= 0.20

P(man received promotion, given he asked for one)
= 59/100
= 0.59

P(man asked for promotion and received )
= P(man asked for a promotion) x P(man received promotion, given he asked for one)
= 0.20 x 0.59
= 0.118
Probability is considered as  the percentage of an event taking place in a specific time frame, in a given place. It is said to be a great aid in the horizons of science and mathematics.


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To identify the congruence postulate used, you need to analyze the given information about the sides and angles of the triangles and choose the postulate that matches the given information.

It's good to use different congruence postulates to identify the congruence of triangles. To identify the congruence postulate used, you need to analyze the given information about the sides and angles of the triangles and see which postulate matches the given information.

For example, if you are given the lengths of two sides and the included angle of one triangle, and the lengths of the corresponding sides and included angle of the other triangle, you can use the SAS Congruence Theorem to conclude that the triangles are congruent. If you are given the lengths of all three sides of both triangles, you can use the SSS Congruence Theorem to conclude that the triangles are congruent.

It's also important to note that the AAS Congruence Theorem is not a valid postulate. The correct postulate is the ASA (Angle-Side-Angle) Congruence Theorem, which states that if two angles of one triangle are congruent to two angles of another triangle, and the included sides are congruent, then the triangles are congruent.

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Answer:

Step-by-step explanation:

Y= 4x+3 make x the subject

4x = y - 3

x = (y-3)/4

Answer:

12 square centimeters

Step-by-step explanation:

Not sure what formula you are using here. The standard one is A=1/2 b h, where b is the base and h is the height.

base=4

height=6

A= 1/2 x 4 x 6

A=1/2 x 24

A=12 cm^2

Answer:

An abacus is a calculation tool used by sliding counters along rods or grooves, used to perform mathematical functions. In addition to calculating the basic functions of addition, subtraction, multiplication and division, the abacus can calculate roots up to the cubic degree.

The component form of the sum of u and v with direction angles is u + v = (10√2 - 50)i + 10√2 j.

We are given the magnitudes and direction angles of vectors u and v. We need to find the component form of their sum.

Let's first convert the given magnitudes and direction angles to their corresponding components. For vector u:

|u| = 20, θu = 45°

The x-component of u is given by:

ux = |u| cos(θu) = 20 cos(45°) = 10√2

The y-component of u is given by:

uy = |u| sin(θu) = 20 sin(45°) = 10√2

Therefore, the component form of vector u is:

u = 10√2 i + 10√2 j

Similarly, for vector v:

|v| = 50, θv = 180°

The x-component of v is given by:

vx = |v| cos(θv) = -50 cos(180°) = -50

The y-component of v is given by:

vy = |v| sin(θv) = 50 sin(180°) = 0

Therefore, the component form of vector v is:

v = -50 i + 0 j

The component form of the sum of u and v is given by the sum of their x- and y-components:

u + v = (10√2 - 50) i + (10√2 + 0) j

Simplifying, we get:

u + v = (10√2 - 50) i + 10√2 j

Therefore, the component form of the sum of u and v is:

u + v = (10√2 - 50) i + 10√2 j

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The question is -

Find the component form of the sum of u and v with the given magnitudes and direction angles θu and θv.

| | u | | = 20 , θu = 45° | | v | | = 50 , θv = 180°.