An article bought for $125 was sold for $175. The percentage profit was?

help plz o(╥﹏╥)o​

Answer:

sorry I really need these points im so so sorry bro I need it too pass highschool

Step-by-step explanation:

Because number line divide into 2 parts, so denominator of fraction is 2

whole number 1, fraction = 2/2

whole number 2, fraction = 4/2

whole number 3, fraction = 6/2

Using the definition of derivative, we have a) f'(x) = - 20x^3 and b) f''(x) = - 60x^2. f increases on interval (-∞, 0), decreases on interval (0, ∞), concave downward on intervals (-∞, 0) and (0, ∞) and upward on interval (0, ∞).

(a) Using the power rule of differentiation, we have:

f'(x) = - 20x^3

(b) Using the power rule again, we have:

f''(x) = - 60x^2

(c) For f to be increasing, we need f'(x) > 0. From part (a), we see that f'(x) > 0 when x < 0 and f'(x) < 0 when x > 0. Thus, f is increasing on the interval (-∞, 0).

(d) For f to be decreasing, we need f'(x) < 0. From part (a), we see that f'(x) < 0 when x > 0 and f'(x) > 0 when x < 0. Thus, f is decreasing on the interval (0, ∞).

(e) For f to be concave downward, we need f''(x) < 0. From part (b), we see that f''(x) < 0 when x ≠ 0. Thus, f is concave downward on the intervals (-∞, 0) and (0, ∞).

(f) For f to be concave upward, we need f''(x) > 0. From part (b), we see that f''(x) > 0 when x = 0. Thus, f is concave upward on the interval (0, ∞).

Know more about interval here:

https://brainly.com/question/13708942

#SPJ11

The value of k for which f(x) is a legitimate pdf is 3.

To determine the value of k for which f(x) is a legitimate probability density function (pdf), we need to ensure that the integral of f(x) over its entire range is equal to 1.

Integrating f(x) over the range x > 1:

∫[1, ∞] (k/x^4) dx = 1

Evaluating the integral:

[-k/(3x^3)] from 1 to ∞ = 1

Taking the limit as x approaches infinity:

[-k/(3x^3)] from 1 to ∞ = -k/(3∞^3) - (-k/(3(1)^3)) = 0 - (-k/3) = k/3

Setting this equal to 1:

k/3 = 1

Solving for k:

k = 3

Know more about probability here:

https://brainly.com/question/32004014

#SPJ11

Answer:

The expression (quotient) which is modelled by the given diagram as in the task content is; (x²+x-2)/(x-1) = x +2.

Which expression and quotient is depicted by the diagram model as in the task content?

It follows from the task content that the diagram model in discuss by observation involves a quotient in which case, the division is; (x-1).

Additionally, the dividend in the quotient by observation is the sum of terms as follows;

x² + x +x -x -1 -1 = x²+x -2.

Ultimately, the result of the division according to the model is; (x +2).

Read more on polynomial division model;

https://brainly.in/question/10943687

#SPJ1

Step-by-step explanation:

We would need to move 8 units along the y-axis to be lined up across from point D.

In an ordered pair (x, y), x represents the coordinate along the horizontal x-axis, and y represents the coordinate along the vertical y-axis. The origin is located at (0, 0), where both coordinates are equal to zero.

In this case, to determine how many units to move along the y-axis to be lined up across from point D, we need to know the y-coordinate of point D. If the coordinates of point D are given, we simply need to take the absolute value of the difference between the y-coordinate of the origin (which is 0) and the y-coordinate of point D.

For example, if the coordinates of point D are (5, 8), we would need to move 8 units along the y-axis to be lined up across from point D. The calculation would be:

|0 - 8| = 8

So, we would need to move 8 units along the y-axis to be lined up across from point D.

Learn more about coordinate on

https://brainly.com/question/17206319

#SPJ1

Answer:

The correct answer is A

Step-by-step explanation:

2 is exactly 7 units away from -5.

Answer:

Let's actually find the line of best fit...

m=(nΣyx-ΣyΣx)/(nΣx^2-ΣxΣx)

m=(11*836-130*55)/(11*385-3025)

m=2046/1210  

m=93/55

b=(Σy-93Σx/55)/n

b=(55Σy-93Σx)/(55n)

b=(7150-5115)/(55*11)

b=185/55, so the line of best fit is:

y=(93x+185)/55

A)  The approximate y-intercept (the value of y when x=0) is 185/55≈3.36.

Which means that those who do not practice at all will win about 3.36 times

B) y(13)=(93x+185)/55

y(13)≈25.34

So after 13 months of practice one would expect to win about 25.34 times.

Answer:

The answer you're looking for is 1470.

Step-by-step explanation:

The method I used was PEMDAS

Since there was no parenthesis, I simplified the exponents.

2.130 x 10³ - 6.6 x 10² = ?
2.130 x 1000 - 6.6 x 100 = ?

After that, I multiplied all terms next to each other.

2.130 x 1000 - 6.6 x 100 = ?
2130 - 660 = ?

The final step I did was to subtract the two final terms and ended up with 1470 as my final answer.

1470 = ?

I hope this was helpful!

Answer:

Permutation is an arrangement of things where order of arrangement matters. The position of each thing in a permutation matters. Thus, Permutation can be associated with Position.

Combination is grouping/selection of things where order does not matter. Permutation can be considered as an ordered combination.

Let's consider the set

S = {at² + a²t - a ∣ a ∈ R}.

We need to find out whether the set S is a subspace of P2.

In order to prove that a subset of vector space is a subspace of it, we need to confirm that the subset is non-empty and satisfies the following 3 conditions:

1. Closure under vector addition:

if u and v are any vectors in the subset S, then u+v is also in the subset S.

2. Closure under scalar multiplication: if u is any vector in the subset S and k is any scalar, then ku is also in the subset S.

3. It contains the zero vector:

the subset S must contain the zero vector, 0.

The given set

S = {at² + a²t - a ∣ a ∈ R} is not a subspace of P2 because it does not contain the zero vector.

Since the set S does not contain the zero vector, we cannot perform vector addition and scalar multiplication operations on it.

Therefore, the given statement "The set S={at²+a²t−a∣a∈R} is a subspace of P2​" is False.

Therefore, the correct option is False.

To know more about scalar multiplication  visit:

https://brainly.com/question/30221358

#SPJ11

Using this formula, we can calculate that the chance that the plane will be overbooked is 35.1%. This means that there is a 35.1% chance that more than 300 passengers will show up for the flight despite the airline only having 300 seats.

The chance that a plane will be overbooked is calculated using a binomial probability formula. The formula is P(x) = nCx * p^x * (1 - p)^(n - x), where n is the number of trials (in this case, 300), x is the number of successes (in this case, 324 reservations), and p is the probability of success (in this case, 90%).

For more such airline questions

https://brainly.com/question/29579489

#SPJ11

Answer:

3628800 ways if the women are always required to stand together.

To solve this problem, we can consider the number of ways to arrange the women and men separately, and then multiply the results together.

First, let's consider the arrangement of the women. Since no two men can be seated next to each other, the women must be seated in between the men. We can think of the 5 men as creating 6 "gaps" where the women can be seated (one gap before the first man, one between each pair of men, and one after the last man).

Out of these 6 gaps, we need to choose 7 gaps for the 7 women to sit in. This can be done in "6 choose 7" ways, which is equal to the binomial coefficient C(6, 7) = 6!/[(7!(6-7)!)] = 6.

Next, let's consider the arrangement of the 5 men. Once the women are seated in the chosen gaps, the men can be placed in the remaining gaps. Since there are 5 men, this can be done in "5 factorial" (5!) ways.

Therefore, the total number of ways to seat the 5 men and 7 women is 6 * 5! = 6 * 120 = 720.

There are 720 ways to seat the 5 men and 7 women in a row such that no two men are next to each other.

To know more about arrangement visit

https://brainly.com/question/1427391

#SPJ11

Answer:

AB || CE, so we have triangle DEO, two of whose angles are 100° and 26° (from point D, draw DE such that CD + DE = CE intersects BO). The third angle of this triangle measures 54°, so

x = 180° - 54° = 126°.

Answer:

x=-2

Step-by-step explanation:

The catering company bought 59/24 lbs of mini shrimp.

A fraction represents a part of a number or any number of equal parts.

Given that the total shrimp needed is 8.75 lbs

Jumbo shrimp = 3²/₃

Medium-sized shrimp = 2⁵/₈

The total shrimp needed is 8.75 lbs, we need to change this decimal number into fraction:

8.75 - (3²/₃ + 2⁵/₈)

8.75 - (11/3 + 21/8)

8.75 - (88/24 + 63/24)

8.75 - 151/24

210/24 - 151/24

= 59/24 lbs of mini shrimp

So, the mini shrimp bought is 59/24 lbs

Learn More Mixed fraction at;

https://brainly.com/question/7809799

#SPJ1

The probability of winning $1000 a day for life is approximately 5.245 x 10^-11 and the probability of winning $1000 a week for life is approximately 1.07 x 10^-8. The probability of winning the jackpot ($1000 a day for life) is 1/(60^5 * 4), while the probability of winning $1000 a week for life is 1/(60^5).

In the Florida Lottery Cash4Life game, a player must select five numbers from 1 to 60 and then one Cash Ball number from 1 to 4. The jackpot prize is $1000 a day for life if all five numbers and the Cash Ball match the winning numbers drawn on Monday nights. If just all five numbers match the winning numbers, the player will win $1000 a week for life.
To determine the probability of winning $1000 a day for life, we can use the formula for the probability of independent events: P(A and B) = P(A) x P(B)

(a) To win the jackpot of $1000 a day for life, the player needs to match all five numbers and the Cash Ball. There are 60 options for each of the five numbers and 4 options for the Cash Ball. The total number of possible outcomes is 60^5 (60 choices for each of the five numbers) times 4 (for the Cash Ball). So the probability of winning the jackpot is 1/(60^5 * 4). (b) To win $1000 a week for life, the player needs to match only the five numbers, without considering the Cash Ball. The total number of possible outcomes for this scenario is 60^5. Therefore, the probability of winning $1000 a week for life is 1/(60^5).

To know more about probability visit:-

https://brainly.com/question/32201909

#SPJ11

Answer:

384,480

Step-by-step explanation:

32040 x 12 = 384,480

Mrs. Chaukes annual income is 384,480.

Data

This is the total amount earned in a given year. It is often calculated as the sum of your monthly income throughout the 12 known months in a calendar year.

To find Mrs. Chaukes annual income, we simply need to multiply her monthly income by 12 to get that answer.

\(32040 * 12 = 384480\)

Mrs. Chaukes annual income is 384,480.

Learn more on annual income here;

https://brainly.com/question/13793671

magnetic field at (i) is B = (μ₀/4π) * (I * (0, 0, dz) x (1, 2, 5)) / r³ (ii)B = (μ₀/4π) * (I * (0, 0, dz) x (2, 7/3, 10)) / r³ (iii)B = (μ₀/4π) * (I * (0, 0, dz) x (10, π/3, π/2)) / r³.

To find the magnetic field at different points in space due to a wire aligned with the z-axis, we can use the Biot-Savart Law.

Given that the wire is aligned with the z-axis and symmetrically placed at the origin, we can assume that the current is flowing in the positive z-direction.

(i) At point (1, 2, 5):

To find the magnetic field at this point, we can use the formula:

B = (μ₀/4π) * (I * dl x r) / r³

Since the wire is aligned with the z-axis, the current direction is also in the positive z-direction.

Therefore, dl (infinitesimal length element) will have components (0, 0, dz) and r (position vector) will be (1, 2, 5).

Substituting the values into the formula, we get:

B = (μ₀/4π) * (I * (0, 0, dz) x (1, 2, 5)) / r³

(ii) At point (2, 7/3, 10):

Similarly, using the same formula, we substitute the position vector r as (2, 7/3, 10):

B = (μ₀/4π) * (I * (0, 0, dz) x (2, 7/3, 10)) / r³

(iii) At point (10, π/3, π/2):

Again, using the same formula, we substitute the position vector r as (10, π/3, π/2):

B = (μ₀/4π) * (I * (0, 0, dz) x (10, π/3, π/2)) / r³

learn more about vector :

https://brainly.com/question/30958460

#SPJ4

Answer:

Rudy answered 2 questions more than Camilo.

Step-by-step explanation:

Multiple regression analysis is applied when analyzing the relationship between one dependent variable and two or more independent variables. The goal is to determine the extent to which the independent variables predict the dependent variable.

Multiple regression analysis is a statistical technique used to explore and quantify the relationship between a dependent variable and multiple independent variables. It allows researchers to examine how changes in one or more independent variables impact the dependent variable, while controlling for the effects of other variables. By estimating the coefficients for each independent variable, the analysis provides insights into the strength, direction, and significance of their relationships with the dependent variable. This method is commonly employed in various fields, such as economics, social sciences, and business, to understand complex relationships and make predictions based on the interplay of multiple factors.

To know more about Multiple regression analysis , visit:

https://brainly.com/question/30011167

#SPJ11

The total number of samples will be 1109 .

Given ,

Margin of error 0.02

Here,

According to the formula,

\(Z_{\alpha /2} \sqrt{pq/n}\)

Here,

p = proportions of scientist that are left handed

p = 0.09

n = number of sample to be taken

Substitute the values,

\(Z_{0.01} \sqrt{0.09 * 0.91/n} = 0.02\\ 2.33 \sqrt{0.09 * 0.91/n} = 0.02\\\\\\\)

n ≈1109

Thus the number of samples to be taken will be approximately 1109 .

Know more about proportions,

https://brainly.com/question/31548894

#SPJ4

Answer:

Highest value - lowest value. So 12-4

Answer:

135°

Step-by-step explanation:

You want QRT. So if you look at it you have a straight line, which equals 180°. you already have an angle at 45° so all you do is 180-45 and that equals 135°

Answer:

a = 50, b = 70

Step-by-step explanation:

In a parallelogram, opposite angles are congruent so we can write the following equation to solve for b:

b + 20 = 2b - 50

-b = -70

b = 70

To solve for a:

a + 40 = 2a - 10

-a = -50

a = 50

The value of x comes out to be 9.

Here, we are given that m∠7 = 107 and m∠4 = (8x+1)

From the figure given below, we can see that angle 7 and angle 6 are vertically opposite angles. Thus-

angle 7 = angle 6

measure of angle 6 = 107°

Now, angle 6 and angle 4 are opposite interior angles and the sum of opposite interior angles is equal to 180. Thus-

m∠4 + m∠6 = 180

8x + 1 + 107 = 180

8x + 108 = 180

8x = 180 - 108

8x = 72

x = 72/8

x = 9

Thus, the value of x comes out to be 9.

Learn more about angles here-

https://brainly.com/question/25770607

#SPJ1

Your question was incomplete. Check for the missing figure below.

Answer:

f your number is x, then the difference between that number and 8 would be x-8. Twice that is 2(x-8)

Three times the sum of the number and 3 would be 3(x+3). So, you get the equation:

2(x-8)=3(x+3)

2x-16=3x+9

x=-25

The height of the door frame is approximately \(68.2 + 2t = 68.2 + 2\sqrt(131.2) \approx95.1\)inches.

Basic geometry concepts.

Firstly, we need to recognize that the two identical rectangular tiles form a vertical rectangle in both figure 1 and figure 2.

Let's call the height of this rectangle "h" and the width "w".
In figure 1, we can see that the distance from the top of the rectangle to the top of the door frame is "h".

Similarly, the distance from the bottom of the rectangle to the bottom of the door frame is also "h".

Therefore, the height of the door frame is simply the sum of the height of the rectangle and the height of the two tiles.
Height of door frame = h + 2t
"t" is the height of one tile.
Next, we can use the same logic for figure 2.

The distance from the top of the rectangle to the top of the door frame is now "y".

Similarly, the distance from the bottom of the rectangle to the bottom of the door frame is "z".

Therefore, we can write:
\(Height of door frame = (h - t) + 2t\)
Where (h - t) is the height of the rectangle above the tiles.
Now, we can equate the two expressions for the height of the door frame:
\(h + 2t = (h - t) + 2t\)
Simplifying, we get:
h = 3t
We are given that the distance from w to h is 45 inches, so we can use Pythagoras' theorem to find the length of the rectangle:
\(w^2 + h^2 = 45^2\)
Substituting h = 3t, we get:
\(w^2 + 9t^2 = 2025\)
Similarly, we can use the information in figure 2 to get another equation:
\(w^2 + 4t^2 = 1369\)
Now we have two equations with two variables (w and t), which we can solve simultaneously.

Subtracting the second equation from the first, we get:
\(5t^2 = 656\)
Therefore,
\(t^2 = 131.2\)
And
\(h = 3t = 3sqrt(131.2)\)\(\approx68.2 inches\)
Finally, we can use the Pythagorean theorem again to find the length of the door frame:
\(w^2 + h^2 = 45^2\)
Substituting h = 68.2, we get:
\(w^2 + 68.2^2 = 2025\)
Solving for w, we get:
\(w \approx 41.2 inches\)

For similar questions on Frame

https://brainly.com/question/29657878

#SPJ11

Here, we want to find the cube root of 729

Mathematically, we are looking for a number which when multiplied by itself 3 times will give 729

Out of the options, the only value that does this is 9

This is because;

The sample proportion is 0.530 and the z-critical value is 2.58 and the confidence interval at 99% is ( 0.503, 0.556 ).

Given that,

Because watching TV via digital streaming is becoming more and more common, tv advertising companies are having a harder time connecting with viewers. 53% of the 2343 American adults surveyed by the Harris Poll on November 13, 2012, claimed they had viewed digitally streamed television content on at least one device.

We have to find what is the sample proportion? firstly, the z-critical value is ? What is the confidence interval at 99%?

We know that,

n = 2343

Point estimate = sample proportion = \(\hat p\) = 0.530

1 - \(\hat p\) = 1 -0.530 = 0.470

At 99% confidence level

α = 1-0.99% =1-0.99 =0.01

α /2 =0.01/ 2= 0.005

Z(α /2) = Z0.005 = 2.576

Z (α/2) = 2.576 = 2.58

Margin of error = E = Z (α/2) × √((\(\hat p\) × (1 - \(\hat p\) )) / n)

=2.576 × (√(0.530×(0.470) /2343 )

= 0.027

A 99% confidence interval for population proportion p is ,

\(\hat p\)- E < p < \(\hat p\) + E

0.530 -0.027 < p < 0.530 +0.027

0.503 < p < 0.556

( 0.503, 0.556 )

Therefore, The sample proportion is 0.530 and the z-critical value is 2.58 and the confidence interval at 99% is ( 0.503, 0.556 ).

To learn more about interval visit: https://brainly.com/question/15050000

#SPJ4