Please help! WILL GIVE BRAINLIEST! Solve for X.
A.5
B.6
C.7
D.8

Given the assumptions set above, the number of participants that will join the network on each side is as follows: two influencers and 17 patients.

Explanation :From the given data, the time cost of joining the network is $20 and $5 for influencers and patients, respectively. Influencers (side 1) are content contributors, their willingness-to-pay function (u') of joining the network is:• If n2 = 0, u' = 0. If n2 > 0, u' = 2*n/n. Patients (side 2), who seek help, have the following willingness-to-pay function (u"):If n = 0, up = 0. If n = 1: u' =10, for n2<=10.• uP =10/(0.1*n2), for n2>10.If n = 2: u' =10, for nz<=20.• u' =10/(0.05*n2), for n2>20.By putting n = 0 in u" equation, we get u" = 0 as there are no patients initially. By putting n = 1 in u" equation, we get u" = 10 as n2 = 0.

Since n2 = 0, putting n = 2 in u" equation, we get u" = 10 as well. Therefore, both the influencers will join as they both have u' > 20 and the maximum number of patients who can join the network are 17. This is because when n = 1, u" = 10 and n2 <= 10. For n = 2, the maximum number of patients who can join the network is 17 as per the equation u" = 10/(0.1*n2). Putting n2 = 17 in the equation, we get u" = 5.88 which is less than their time cost of joining the network.

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Answer:

3, 4, 5

Step-by-step explanation:

Three consecutive integers means that

\(X_1, X_2 = X_1 + 1, X_3 = X_2 + 1\)

The sum of twice the second and 4 times the third is 25 times the first number

\(X_1 + 25 = 2X_2 + 4X_3\\X_1 + 25 = 2(X_1 + 1) + 4(X_1 + 2)\\X_1 + 25 = 2X_1 + 2 + 4X_1 + 8\\X_1 + 25= 6X_1 + 10\\5X_1 = 15\\X_1 = 3\\X_2 = 4, \\X_3 = 5\)

Expression: 5z² - 2z + 1 = 0

Discriminant formula: b²- 4ac

Identify: a = 5, b = -2, c = 1

Solve for discriminant: (-2)²- 4(5)(1) = 4 - 20 = -16

p = 1 also can be rewritten as 2nd equation: 0m + 1p = 1

Build Augment Matrices by taking coefficient's:

\(\left[\begin{array}{ccc}1&-1&|| \ \ 2\\0&1&|| \ \ 1\end{array}\right]\)

Solve:

Add row 2 to row 1 : R₁ = R₁ + R₂ and restore it back

\(\rightarrow \ \left[\begin{array}{ccc}1+0&-1+1& \ \ \ \ || \ 2+1\\0&1&|| \ \ 1\end{array}\right]\)

\(\rightarrow \ \left[\begin{array}{ccc}1&0& || \ \ 3\\0&1&|| \ \ 1\end{array}\right] \ \ \ = The \quad reduced \quad matrix\)

Solution = (m, p) = (3, 1)

Answer:

14.  -16

15.  m = 3  and  p = 1

Step-by-step explanation:

Discriminant

\(b^2-4ac\quad\textsf{when}\quad ax^2+bx+c=0\)

Given equation:   \(5z^2-2z+1=0\)

Therefore:

Substituting the values into the discriminant:

\(\begin{aligned}\implies b^2-4ac & = (-2)^2-4(5)(1)\\& = 4-20\\& = -16\end{aligned}\)

As the discriminant is negative, this implies there are no real roots.

Augmented Matrices

\(\begin{array}{c}ax+by=p \\cx+dy=q\end{array} \implies \left[\begin{array}{r r | r}a & b & p \\ c & d & q\end{array}\right]\)    

Use elementary row operations to convert into:

\(\left[\begin{array}{r r | r}1 & 0 & h \\ 0 & 1 & k\end{array}\right] \implies \begin{array}{r}x=h\\y=k\end{array}\)

Given:

\(\begin{aligned}m-p & =2\\ p & = 1\end{aligned} \implies \left[\begin{array}{r r | r}1 & -1 & 2 \\ 0 & 1 & 1\end{array}\right]\)

\(\left[\begin{array}{r r | r}1 & -1 & 2 \\ 0 & 1 & 1\end{array}\right] \begin{array}{c}R_1 + R_2 \rightarrow R_1 \\\rightarrow\end{array} \left[\begin{array}{r r | r}1 & 0 & 3 \\ 0 & 1 & 1\end{array}\right]\)

Therefore:  

\(m=3\)

\(p=1\)

Answer:

Surface Area varies by object/shape.

Ask your teacher/learning helper for those formulas of surface area

Step-by-step explanation:

Surface area is the sum of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area.

Answer:parallelogram

Step-by-step explanation: If one pair of opposite sides of a quadrilateral are equal and parallel, then the quadrilateral is a parallelogram

Answer:

3/10

To simplify a fraction, you need to find the  GCF (greatest common factor) between both numbers. The GCF between 9 and 30 is 3

9/10 divide by 3/3 is 3/10

Step-by-step explanation:

Hope this helps!! Mark me brainliest!!

Answer:

\(\frac{3}{10}\)

Hope this helps :)

Step-by-step explanation:

To simplify any fraction, you must first find the GCF of the numerator and denominator

9: 1, 3, 9

30: 1, 2, 3, 5, 6, 10, 15, 30

Both of them are divisible by three so we just have to divide the numerator by three and the denominator by three and we'll find our answer:

9/3 = 3

30/3 = 10

The new fraction is:

\(\frac{3}{10}\)

The five-number summary is:

Minimum: 9

First Quartile: 16.5

Median: 25.5

Third Quartile: 39

Maximum: 51

3. Range = 42

4. Interquartile range = 22.5

Given the data for the lengths as, 36, 15, 9, 22, 36, 14, 42, 45, 51, 29, 18, 20, to find the five-number summary of the data set, we would follow the steps below:

1. The numbers in ordered from the smallest to the largest would be:

9, 14, 15, 18, 20, 22, 29, 36, 36, 42, 45, 51

2. The five-number summary for the lengths in minutes would be:

3. Range of the data = max - min = 51 - 9 = 42

4. The interquartile range for the data set = Q3 - Q1 = 39 - 16.5

Interquartile range for the data set = 22.5

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Answer:

5 feet

Step-by-step explanation:

The missing values οf the sectοr are radius ≈ 7.99 meters and arc length ≈ 8.85 meters.

The measurement οf the circle's bοundaries is called as the circumference οr perimeter οf the circle. whereas the circumference οf a circle determines the space it οccupies. The circumference οf a circle is its length when it is οpened up and drawn as a straight line. Units like cm οr unit m are typically used tο measure it.

The circle's radius is cοnsidered while calculating the circumference οf the circle using the fοrmula. As a result, in οrder tο calculate the circle's perimeter, we must knοw the radius οr diameter value.

One sectοr has an area οf 98 square meters and an arc measure οf 40

Tο find the arc length, we can use the fοrmula fοr the arc length οf a sectοr:

L = (θ/360)2πr

Plugging in the given values and the radius we just calculated, we get:

L = (40/360)2π(7.99) ≈ 8.85 meters (rοunded tο twο decimal places)

Sο the missing values οf the sectοr are radius ≈ 7.99 meters and arc length ≈ 8.85 meters.

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Complete question:

Find the area of the circle that contains sector. Round to the nearest tenth, if necessary.

One sector has an area of 98 square meters and an arc measure of 40°.

To calculate the probability of first pulling out a color other than green, eating it, and then pulling out a green, we need to consider the number of jelly beans of each color in the bag and the total number of jelly beans.

Total number of jelly beans = 50

Number of green jelly beans = 15

First, let's calculate the probability of pulling out a color other than green on the first try:

Probability of pulling a non-green jelly bean on the first try = (Total non-green jelly beans) / (Total number of jelly beans)

Probability of pulling a non-green jelly bean on the first try = (50 - 15) / 50 = 35 / 50 = 7/10

After eating the first jelly bean, there are now 49 jelly beans in the bag. Since you ate one jelly bean, the number of green jelly beans remains the same, which is 15.

Next, let's calculate the probability of pulling out a green jelly bean on the second try:

Probability of pulling a green jelly bean on the second try = (Number of green jelly beans) / (Total number of jelly beans after eating one)

Probability of pulling a green jelly bean on the second try = 15 / 49

Therefore, the probability of first pulling out a color other than green, eating it, and then pulling out a green is:

(7/10) * (15/49) = 105/490 = 3/14.

So, the probability is 3/14.

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Answer:$2.50

Step-by-step explanation: You will take $49.95 times 0.05 or 5% and you get 2.497 and round that to $2.50.

The volume of the solid with base x^2 + y^2 = 1 and perpendicular cross sections that are isoceles right triangles with leg on the xy-plane is 4/3 cubic units.

To find the volume of the solid, we need to integrate the area of each cross section perpendicular to the x-axis over the interval of x that makes up the base of the solid. Since the cross sections are isoceles right triangles with leg on the xy-plane, we know that the height of each cross section is equal to the length of the leg on the xy-plane, which is given by 2√(1-x^2).

So, the area of each cross section is (1/2) * base * height, where the base is also equal to 2√(1-x^2). Therefore, the volume of the solid can be calculated as follows:

V = ∫[a,b] (1/2) * base * height dx

V = ∫[-1,1] (1/2) * 2√(1-x^2) * 2√(1-x^2) dx

V = ∫[-1,1] (1-x^2) dx

V = [x - (1/3)x^3]_[-1,1]

V = 4/3

Therefore, the volume of the solid is 4/3 cubic units.

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Therefore, the standard deviation of the data set is approximately 4.14.

The standard deviation is calculated by taking the square root of the variance, which is the sum of the squared deviations divided by the sample size minus 1.

So, first we need to calculate the variance:

variance = sum of squared deviations / (sample size - 1)

variance = 103 / (7 - 1)

variance = 17.17

Now we can find the standard deviation:

standard deviation = √(variance)

standard deviation = √(17.17)

standard deviation = 4.14 (rounded to two decimal places)

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The null hypothesis for the data will be 21.62 and the alternate hypothesis is 2.02 for the p-value for the data is 0.2253 .

The charge at which anything happens is referred to as the velocity at which it happens.

The required details for mean rate :

(a) H0: µ = 21.62

Ha: µ ≠ 21.62

(b) t = -1.231

p-value = 0.2253

(c) Stop rejecting H0 right now. No longer significantly different from the domestic water tariff in Tulsa, the suggested household water charge per five CCF for the entire USA.

(d) H0: µ = 21.62

Ha: µ ≠ 21.62

t = -1.231

check statistic ≥ 2.020

Don't dismiss H0 any longer. The suggested five CCF residential water charge for the entirety of the USA is no longer significantly different from the five CCF residential water tariff in Tulsa.

The P-value is higher at 0.05, the level of significance. The impact in this instance is negligible. The attempt to reject the null hypothesis failed.

The conclusion is that there is insufficient statistical support to determine whether other American cities have a different mortality rate than Tulsa.

The crucial values for t at this level of significance are t=2.019.

Given that the statistic t = -1.15 is inside the acceptance range in this case, the null hypothesis is not disproved.

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Question

Juan deposited $2,250 in the bank to celebrate the birth of his son. After three years, he received his statement and the bank said he had $2,587.50 in the account.

How much interest did Juan earn in three years?

How much interest did Juan earn per year?

What was the interest rate?

Answer: GOOD LUCK

337 and 112.33

Answer:

337 and 112.33

Step-by-step explanation:

First answer is 337 u take the difference between the 2 numbers. And the interest is 112.33 per year u divide the interest by 3. I hope this helps.

The addition equations for which we can make a 10 to add are 24 + 14 and 26 + 14.

An algebraic expressiοn is a mathematical phrase that cοntains variables, cοnstants, and mathematical οperatiοns such as additiοn, subtractiοn, multiplicatiοn, divisiοn, and expοnentiatiοn. It represents a value οr a set οf values when the variables are replaced by specific numerical values.

Making a 10 tο add is a mental math strategy where yοu can add numbers by making οne οf them intο a 10 and then adding the remaining number tο it. Fοr example, tο sοlve the additiοn prοblem 7 + 8, yοu can think οf it as "what number dο I need tο add tο 7 tο make 10?" The answer is 3, sο yοu add 3 tο 7 tο get 10, and then add the remaining 5 tο get 13.

To apply this strategy to the addition equations listed, we can look for pairs of numbers that add up to 10 or multiples of 10.

For the equation 24 + 14, we can make a 10 to add by thinking of it as "what number do I need to add to 4 to make 10?" The answer is 6, so we add 6 to 14 to get 20, and then add the remaining 4 to get 24.

For the equation 17 + 25, we can make a 10 to add by thinking of it as "what number do I need to add to 7 to make 10?" The answer is 3, so we add 3 to 17 to get 20, and then add the remaining 5 to get 25.

For the equation 16 + 13, we cannot make a 10 to add because there are no pairs of numbers that add up to 10 or multiples of 10.

For the equation 26 + 14, we can make a 10 to add by thinking of it as "what number do I need to add to 4 to make 10?" The answer is 6, so we add 6 to 14 to get 20, and then add the remaining 6 to get 26.

Therefore, the addition equations for which we can make a 10 to add are 24 + 14 and 26 + 14.

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The initial bird population density is 3713.

Given info;

A certain county received a new species of bird 25 years ago. According to biologists, the population doubles every ten years and is currently 21,000 people.

To get the initial size of the bird population;

We use the formula,

\(P(t)=Po* 2^\frac{t}{10}\)

Where Po is the initial population and t is the time in years.

\(21000= P(25)=Po*2^\frac{25}{10}\)

\(21000= Po*2^\frac{5}{2}\)

\(21000= 4\sqrt{2}*Po\)

\(Po = 21000/4\sqrt{2}\)

\(Po = 3712.31\\Po = 3713\)

Hence, the initial size of the bird population is 3713.

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Answer:

A.

Step-by-step explanation:

sinx = opposite over hypotenuse

We are given from the picture that our hypotenuse is √34 and our opposite is 3:

sin(x) = 3/√34

sin(x) = 3√34/34

Answer:£\(74.2\)

Step-by-step explanation:

Given

Cost of \(40\) liters of petrol is £\(42.40\)

Using Unitary method

\(40\) liters cost ↔£\(42.40\)

\(1\) liter cost ↔ \(\dfrac{42.40}{40}=1.06\)

\(70\ \text{liters cost}\ \rightarrow1.06\times 70=\)£\(74.2\)

C

The mistake the arrangers made is in the second inequality. They considered the number of caps to be bought should be at least 5 times greater than the number of blouses, not the other way around. The correct inequality should be C

The correct answer is D) The first inequality should be s + h ≤ 1800.

The organizers made an error in the first inequality. The given inequality 10s + 8h ≤ 1800 represents the total cost of buying shirts (10s) and hats (8h) should be less than or equal to $1800. However, this does not take into account the fact that the organizers want to buy at least 5 times as many shirts as hats, as indicated by the second inequality h ≥ 5s.

The correct way to represent this constraint is by using the equation s + h ≤ 1800, which ensures that the total number of shirts and hats purchased does not exceed $1800 in cost. This is because the organizers want to make sure that the total cost of shirts and hats combined does not exceed the budget of $1800.

He should devote $225 to Credit 1 and $75 to Credit 2. The Option D.

We have to calculate interest charged on each credit card per month.

For Credit 1, the interest charged is:

= (0.22/12) * $6000

= $110

For Credit 2, the interest charged is:

= (0.12/12) * $2000

= $20

Remaining amount after paying interest charges is:

For Credit 1:

= $300 - $110

= $190

For Credit 2:

= $300 - $20

= $280

The total balance is $8,000, so, proportion for each credit card is:

Credit 1:

= $6,000 / $8,000

= 0.75

Credit 2:

= $2,000 / $8,000

= 0.25

We will now allocate the remaining amount as follows:

For Credit 1:

= 0.75 * $190

= $142.50

For Credit 2:

= 0.25 * $190

= $47.50

Now, we will add interest charges and allocated amounts, we get:

For Credit 1:

= $110 + $142.50

= $252.50

For Credit 2:

$20 + $47.50

= $67.50.

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To assign the name seconds in a decade to the number of seconds between midnight January 1, 2010, and midnight January 1, 2020, we can follow these steps:

Find the number of days between January 1, 2010, and January 1, 2020. First, let's find the number of leap years and non-leap years in this span of a decade. 2012 and 2016 are leap years because they are divisible by 4 but not by 100. 2010, 2011, 2013, 2014, 2015, 2017, 2018, 2019, and 2020 are non-leap years because they are not divisible by 4.

Convert the number of days to seconds.1 day = 24 hours × 60 minutes × 60 seconds = 86,400 secondsNumber of seconds in a decade = 86,400 seconds/day × 4,017 days = 34,958,400 seconds.Therefore, we can assign the name seconds_in_a_decade to the number of seconds between midnight January 1, 2010, and midnight January 1, 2020, which is 34,958,400 seconds.

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To calculate the number of seconds between January 1, 2010 and January 1, 2020, we need to consider the number of seconds in each year, taking into account both leap years and non-leap years. There are 8 non-leap years and 2 leap years, resulting in a total of 315,532,800 seconds in the decade.

To calculate the number of seconds between January 1, 2010, and January 1, 2020, we need to determine the number of seconds in each year and add them up.

A non-leap year has 365 days, which is 365 * 24 * 60 * 60 = 31,536,000 seconds. A leap year has 366 days, which is 366 * 24 * 60 * 60 = 31,622,400 seconds.

There are two leap years within the span of a decade (2012 and 2016), so we will have 8 non-leap years and 2 leap years. The total number of seconds for the non-leap years is 8 * 31,536,000 = 252,288,000 seconds. The total number of seconds for the leap years is 2 * 31,622,400 = 63,244,800 seconds. Adding these two values together gives us the total number of seconds in a decade: 252,288,000 + 63,244,800 = 315,532,800 seconds.

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The probability that the mean annual precipitation of a sample of 49 randomly picked years will be less than 92.8 inches is, 0.9192

What is standard deviation?

The standard deviation in statistics is a measurement of how much a group of values can vary or be dispersed. A low standard deviation suggests that values are often close to the set's mean, whereas a large standard deviation suggests that values are dispersed over a wider range.

Given: The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 90 inches, and a standard deviation of 14 inches.

z score is given by,

z = (x - μ)/(σ/√n) = (92.8 - 90)/(14/√49) = 2.8/2 = 1.4

The  required probability is,

p(z < 1.4) = 0.9192, by standard normal table.

Hence, the  probability that the mean annual precipitation of a sample of 49 randomly picked years will be less than 92.8 inches is,  0.9192.

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Answer:

Let's see the first two points: (-7, 5) and (-5, 9)

The line passes these points has a form of: y = Mx + b

=> 5 = (-7)M + b

   9 = (-5)M + b

Subtract the 1st equation from 2nd equation, we have:

4 = 2M

=> M = 2

Substitute M back into 1st equation:

=> 5 = (-7)*2 + b

=> b = 19

=> y = 2x + 19

or y - 5 = 2x + 14

or y - 5 = 2(x + 7)

=> Option A is correct

Hope this helps!

:)

Answer:

A

Step-by-step explanation:

The difference between the values of y are constant, that is

17 - 13 = 13 - 9 = 9 - 5 = 4

This indicates the relationship is linear.

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Calculate m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (- 7, 5) and (x₂, y₂ ) = (- 5, 9) ← 2 ordered pairs from the table

m = \(\frac{9-5}{-5+7}\) = \(\frac{4}{2}\) = 2

Use any ordered pair from the table for (a, b)

Using (a, b) = (- 7, 5), then

y - 5 = 2(x - (- (- 7)) , that is

y - 5 = 2(x + 7) → A

The value of x is 5 and the value of y is -13 which satisfies the equation. The correct option is C.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

The given equation is,

( x + yi ) + ( 4 + 9i ) = 9 - 4i

The points are x= 5 and y = -13,

( x + yi ) + ( 4 + 9i ) = 9 - 4i

( 5 -13i ) + ( 4 + 9i ) = 9 - 4i

5 + 4 -13i+9i = 9-4i

9-4i = 9 - 4i

Therefore, the value of x is 5 and the value of y is -13 which satisfies the equation. The correct option is C.

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Answer:

im think its B

Step-by-step explanation:

The ∆ABC is an isosceles triangle and have the base angles m∠A and m∠C equal to 51° and the angle m∠B is equal to 78°.

An isosceles triangle have the measure of its base angles to be equal, and the sum of the interior angles sum up to 180°.

Given that sides AB ≅ BC, then the triangle ∆ABC has two sides with similar length and base angles so;

angles m∠A and m∠C are the base angles are both equal to 51°

m∠B = 180° - (51 + 51)° {sum of interior angles of a triangle}

m∠B = 180° - 102°

m∠B = 78°

Therefore, the isosceles triangle ∆ABC have the base angles m∠A and m∠C equal to 51° and the angle m∠B is equal to 78°.

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Answer:

study DUHHHH

Step-by-step explanation: