made bracelets with string and beads. she used xx centimeters of string to make 77 bracelets. she used 17.817.8 centimeters of string for each bracelet. how much string did she use in all? write an equation and use it to solve this problem.enter the correct answers in the boxes.show hints

Answer:

 Angle B is 245 degrees

Step-by-step explanation:

70 + 45 = 115

There are 360 degrees in one full circle

360 - 115 = 245

A - 45 degrees

B - 245 degrees

C - 70 degrees

In the given case, In a triangle, the sum of the angles is 180∘. Angle a is 45∘ and angle c is 70∘.

The measure of angle a is equal to 45∘ because the sum of the angles in a triangle is 180∘.

Similarly, the measure of angle c is equal to 70∘ because it is also a part of the triangle and the sum of all angles is 180∘.

Therefore, based on the properties of triangles and the sum of angles, we can conclude that angle a is equal to 45∘ and angle c is equal to 70∘.

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Answer:

b. is correct

PlZzzzz follow me guys...

The probability that the sum of the two rolls equals 5 is 1/16.

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

Probability = Number of favorable outcomes / Number of sample

Given a single die with 8 sides (numbered 1, 2, 3, ..., 8) is rolled twice, the total outcome will be:

Total outcome = 8^2

Total outcome = 64

For the sum of two rolls, the expected outcome will be:

E = {(1, 4), (4, 1), (3, 2), (2, 3)}

n(E) = 4

Pr(sum of the two rolls is 5) = 4/64

Pr(sum of the two rolls is 5) = 1/16

Hence the probability that the sum of the two rolls equals 5 is 1/16

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Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Step-by-step explanation:

Point Form:

\((\frac{2}{3} ,-\frac{5}{3}) , (-1, -5)\)

Equation Form:

x= \((\frac{2}{3}\), \(-\frac{5}{3} )\\\) , y= \(-\frac{5}{3}\)

x = -1 , y =-5

Hope this answer your question... sorry I couldnt help more, if it didnt.

Answer:

a and c are correct.

Step-by-step explanation:

In this arithmetic sequence, the first term is 3, and the common difference is 2. So a and c are correct.

a(n) = 3 + 2n for n>0 since a(0) = 3

c(n) = -1 + 2n for n>2 since c(2) = 3

The fundamental difference between a sample survey with nonresponse and a volunteer sample is the way participants are selected and the biases that may result from each approach. While nonresponse in a sample survey can lead to nonresponse bias, volunteer samples are more susceptible to selection bias.

The fundamental difference between a sample survey of human beings that may suffer from nonresponse and data using a volunteer sample is the way participants are selected and the potential biases that may arise.
In a sample survey, a random selection of individuals is chosen from the target population. However, nonresponse can occur when some of these selected individuals fail to participate or provide incomplete information. This can lead to nonresponse bias, which affects the representativeness of the sample and the accuracy of the results. To minimize nonresponse bias, researchers should ensure that their survey design and data collection methods encourage participation and provide clear instructions for respondents.
On the other hand, a volunteer sample consists of participants who willingly choose to participate in the study, usually in response to an open invitation. This approach is more prone to selection bias, as the individuals who volunteer may not be representative of the target population. They may have certain characteristics or attitudes that motivated them to participate, leading to biased results that may not generalize to the broader population. To address selection bias, researchers should carefully consider the recruitment method and the potential impact of volunteerism on their findings.
In summary, the fundamental difference between a sample survey with nonresponse and a volunteer sample is the way participants are selected and the biases that may result from each approach. While nonresponse in a sample survey can lead to nonresponse bias, volunteer samples are more susceptible to selection bias. Researchers must be mindful of these biases when designing and conducting their studies.

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The correct answer is option D

3(c) - 2 represents the total cost of three dance tickets at a cost of c each, less a one-time $2 discount.

         y = mx+b, where m is the slope and b is the y-intercept.

Based on the question. We have the parameters listed below.

The total cost of three dance tickets is 3c (at c for each)

One-time offer = $2

Because discounts are always subtracted from the total cost,

the equation represents,

the total cost of three dance tickets at a cost of c each, less a one-time discount $2

=  3(c) - 2

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The volume of the solid is 64π/3.

We have to use the disk method formula to find the volume of the solid generated by revolving the region bounded by the lines and curves y y=0, x=4, and x = 11 about the x-axis.

The disk method formula is given by:

V= π ∫[a,b]R²(y)

where R(y) is the distance from the axis of revolution to the curve, y is the variable of integration, and [a, b] is the interval of integration.

Let's find the distance from the axis of revolution (x-axis) to the line x = 4 and x = 11.

The radius of the disk when x = 4 is 4 units.

The radius of the disk when x = 11 is 11 units. ∵ y is bounded by the line y = 0∴ limits of integration are 0 to the curve, which is x = 4.

Limits of integration: 0 to 4.

Now, let's put these values in the formula.

V= π ∫[a,b]R²(y)dyV = π ∫[0,4]R²(y)dyV = π ∫[0,4](4² - y²)dy= π [4²y - (y³/3)] [0,4]V = π [(4² * 4) - (4³/3) - 0]= 64π/3

Thus, the volume of the solid generated by revolving the region bounded by the lines and curves y y=0, x=4, and x = 11 about the x-axis is 64π/3.

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The equilibrium point for the supply and demand equations p² + 4q = 253 and 183p² + 6q = 0 is (q, p) = (3, 10).

To find the equilibrium point, we need to solve the system of equations formed by the supply and demand equations. By substituting the value of q = 3 into the first equation, we get p² + 4(3) = 253, which simplifies to p² + 12 = 253.

Solving this equation gives us p = 10. Substituting the values of q = 3 and p = 10 into the second equation, we get 183(10)² + 6(3) = 0, which simplifies to 18300 + 18 = 0.

Since this equation holds true, we have found the equilibrium point to be (q, p) = (3, 10), where the equilibrium quantity is q = 3 and the equilibrium price is p = 10.

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Answer:

10641.777 feets

Step-by-step explanation:

To obtain the distance to be traveled across the sea, we use trigonometry :

Cosθ = adjacent / hypotenus

Adjacent = 10000

Hypotenus = d

θ = 20°

Cos 20° = 10000 / d

0.9396926 = 10000 / d

d = 10000 / 0.9396926

d = 10641.777

The jet fighter will travel 10641.77 ft far across the sea.

It is given that angle of depression it land at is 20°.

It is required to find how far the sea will travel.

The trigonometric ratio is defined as the ratio of the pair of a right-angled triangle.

We have an angle of depression = 20°

The height from the sea level = 10,000 ft

From the figure:

\(\rm cos20 = \frac{Adjacent}{Hypotenuse}\)

\(\rm 0.939 = \frac{10000}{d}\)

d = 10641.77 ft

Thus, the jet fighter will travel 10641.77 ft far across the sea.

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Answer

Step-by-step explanation:

rise over run so it'd be 3/3 positive or y= 3x-3

Answer:

The lines intersect at a right angle

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

hope this helps

Answer:

We can use the Pythagorean theorem to solve this problem. Let's assume that Cari's house is at point A, the airport is at point B, and her grandparents' house is at point C. We know that the distance from A to B is 45 miles and the distance from A to C is 45 miles. We want to find the distance from B to C, which we can call x.

We can form a right triangle with sides AB, AC, and BC. The distance we want to find, x, is the length of the hypotenuse of this triangle (side BC).

Using the Pythagorean theorem, we know that:

AB^2 + AC^2 = BC^2

Substituting in the values we know:

45^2 + 45^2 = x^2

Simplifying:

2025 + 2025 = x^2

4050 = x^2

Taking the square root of both sides:

x = sqrt(4050)

x is approximately equal to 63.64 miles (rounded to two decimal places).

Therefore, the direct distance from the airport to Cari's grandparents' house is approximately 63.64 miles.

The work required to compress the 1 kg propane gas adiabatically from 100 kPa to 800 kPa is -325.3 kJ.

In this case, we have a cylinder/piston containing 1 kg of propane gas, so we can use the mass of propane to calculate the number of moles of gas. The molar mass of propane is approximately 44 g/mol, so the number of moles of propane is:

n = m/M = 1000 g / 44 g/mol = 22.73 mol

We can also use the given initial pressure and temperature to find the initial volume of the gas.

Therefore, we can rearrange the ideal gas law to solve for the initial volume:

V = nRT/P = (22.73 mol)(8.31 J/(mol*K))(300 K)/(100 kPa) = 6.83 m³

Now, let's consider the work done on the gas during the compression process.

We can use the first law of thermodynamics to relate the change in internal energy to the initial and final states of the gas:

ΔU = Q - W

where ΔU is the change in internal energy, Q is the heat transferred to the gas, and W is the work done on the gas.

Since the process is adiabatic, Q = 0. Therefore, we can simplify the equation to:

ΔU = -W

The change in internal energy can be related to the pressure and volume of the gas using the adiabatic equation:

\(PV^{\gamma}\) = constant

where γ is the ratio of specific heats, which is approximately 1.3 for propane. Since the process is reversible, we can use the adiabatic equation to find the final temperature of the gas:

\(T_f = T_i (P_f/P_i)^{(\gamma -1)/\gamma}\) = (300 K)(800 kPa/100 kPa)\(^{(1.3-1)/1.3}\) = 680.8 K

Now we can use the adiabatic equation and the initial and final temperatures to find the work done on the gas:

W = \((\gamma/(\gamma -1))P_i(V_f - V_i)\)= (1.3/(1.3-1))(100 kPa)(V - 6.83 m³)

We can solve for V by rearranging the adiabatic equation:

\(V_f = V_i(P_i/P_f)^{1/\gamma}\) = 6.83 m³ (100 kPa/800 kPa)\(^{1/1.3}\) = 1.84 m³

Substituting into the expression for work, we get:

W = (1.3/(1.3-1))(100 kPa)(1.84 m³ - 6.83 m³) = -325.3 kJ

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Slope of the line passing through (-5,-4)  and (-1,3)is 1.75

The slope formula

slope = (y₂ - y₁) / (x₂ - x₁)

Notice that the slope of a line is easily calculated by hand using small, whole number coordinates. The formula becomes increasingly useful as the coordinates take on larger values or decimal values.

The  points belong to an increasing, linear function.

Equation: y = 1.75x + 4.75.

m=7/4=1.75.

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Answer:

Step 1: Steps for construction

Take AB at 5.5 cm                                    

Step 2: construct as 45 degree  

Step 3: A draw angle ABY=45 degree    

Step 4: cut off from AY, a segment AD=5 cm

Step 5: With B as center and radius as 3.5cm draw an arc.

Step 6: With D as the center and mark radius as 5 cm and draw an arc cut the 1st arc at C

Step 7: join B to C and C to D

Result: Then ABCD is a required quadrilateral  

Hope this helps you hit the crown :D

tell me if correct ok?

9514 1404 393

Answer:

  see the attachment

Step-by-step explanation:

1. Lay out points A and B so they are 5.5 cm apart.

2. Set the compass to 5 cm and draw arcs that intersect above and below segment AB. Label the intersection points Y and Z.

3. Draw segment YZ as a perpendicular bisector of AB.

4. Label the intersection of YZ and AB point E.

5. Using E as the center and AE as the radius, draw an arc that intersects segment YZ at F.

6. Draw segment AD through F. D will lie on the circle of radius 5 cm centered at A. This segment makes 45° angle DAB.

7. Draw an arc of radius 4 cm centered at D through the vicinity of point C.

8. Draw an arc of radius 3.5 cm centered at B through the vicinity of C. The intersection point with the arc of step 7 is point C.

9. Draw quadrilateral ABCD meeting the given requirements.

_____

About the attachment

My geometry tool draws circles of a given radius more easily than arcs of a given radius, so you see circles where only arcs are needed.

In order to find the expected value of a probability distribution, you multiply each possible outcome by its corresponding probability and sum up the results. The expected value represents the average outcome you would expect to obtain if you repeated the experiment many times.

First, list all the possible outcomes and their associated probabilities. Then, multiply each outcome by its probability. Finally, add up all the products to find the expected value.

For example, let's consider a discrete probability distribution with outcomes x1, x2, ..., xn and their respective probabilities p1, p2, ..., pn. The expected value (E) is calculated as:

E = (x1 * p1) + (x2 * p2) + ... + (xn * pn)

Alternatively, if you have a continuous probability distribution, you need to integrate over the entire range of possible outcomes. In this case, the expected value is given by:

E = ∫(x * f(x)) dx

where f(x) is the probability density function.

The expected value provides a measure of the central tendency of the distribution and is often used in decision-making and statistical analysis.

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When 1 mole of liquid water is vaporized at 100°C and 1 bar pressure, the change in entropy (dS) and change in Gibbs free energy (dG) can be determined.

To find the change in entropy (dS) when 1 mole of liquid water is vaporized at 100°C and 1 bar pressure, we can use the equation:

dS = ΔH / T,

where ΔH is the enthalpy change of vaporization and T is the temperature. The enthalpy change of vaporization for water is approximately 40.7 kJ/mol at 100°C. The temperature in Kelvin can be obtained by adding 273.15 to the given temperature, giving us 373.15 K. Substituting the values into the equation, we get:

dS = (40.7 kJ/mol) / (373.15 K).

To find the change in Gibbs free energy (dG), we can use the equation:

dG = ΔH - TΔS,

where ΔH is the enthalpy change and ΔS is the entropy change. Substituting the values we obtained earlier, we have:

dG = (40.7 kJ/mol) - (373.15 K) * [(40.7 kJ/mol) / (373.15 K)].

Calculating this expression gives us the change in Gibbs free energy. The specific values of dS and dG can be obtained by performing the necessary calculations with the given data.

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Answer:

the answer is 36....

because...

12*3=36

and also 4*9 =36

Any multiple of 12 is also a multiple of 4 true because Multiples of 4 can be found by multiplying 4 by another number. For example, 4×3=12.

A multiple is a result of multiplying a number by a whole number (it should not be a fraction). Multiples of an integer are obtained by subtracting the product of the decreasing numbers and the product of the whole numbers. For example, to find multiples of 6, we multiply 6 by 1, 6 by 2, 6 by 3, etc. The coefficients are the result of this multiplication. A number can have an infinite number of repetitions because multiples of a number are obtained by multiplying it by natural numbers. So we can write an infinite number of times for a given number. The table below shows the first 10 multiples of some numbers.

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The horizontal asymptote occurs at y = 0. The absolute value of θ becomes large, the value of the tangent function approaches zero.

The function y = tan(πθ) belongs to the period π, which means that it repeats every π units along the x-axis.

For this function, there are two asymptotes: a vertical asymptote and a horizontal asymptote.

The vertical asymptotes occur at θ = -π/2, π/2, 3π/2, etc.

These values make the denominator of the tangent function equal to zero, resulting in an undefined value.

The horizontal asymptote occurs at y = 0.

As the absolute value of θ becomes large, the value of the tangent function approaches zero.

This means that the graph of y = tan(πθ) gets closer and closer to the x-axis but never touches it.

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The equation of the straight line passing through the centroid of the triangle with vertices(2, 6), (-4, 3) and (2,-3) and parallel to the given straight line 2x + 5y = 3, is; y = -²/₅x + 2

We are given the coordinate of the vertices of the triangle as;

(2, 6), (-4, 3) and (2,-3)

Now, the formula to find the coordinates of the centroid of the triangle is; (x, y) = (x₁ + x₂ + x₃)/3, (y₁ + y₂ + y₃)/3

Thus, the coordinates of the Centroid is;

(x, y) = (2 + (-4) + (2))/3, (6 + 3 + (-3))/3

(x, y) = (0, 2)

The centroid is parallel to the line 2x + 5y = 3

Writing this in slope intercept form of y = mx + c gives;

5y = -2x + 3

y = -²/₅x + 3

Thus, the equation of the line passing through the centroid is;

y - 2 = -²/₅(x - 0)

y - 2 = -²/₅x

y = -²/₅x + 2

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Answer:

208

Step-by-step explanation:

the formula is:

2*(width*lenght+height*lenght+height*width)

2*(6*8+4*8+4*6)

208

Answer:

\( \: \)

Step-by-step explanation:

In the given figure, it is given a net of cuboid where, the length is 8m, the breadth is 6m and the height is 4m and we have to find the surface area of the cuboid.

So, the formula for finding the surface area is ;

\(\\{ \longrightarrow \qquad{ \underline {\boxed{ \pmb{ \mathfrak{ \: Surface\: area_{(cuboid)}=2(lb + bh + lh )}}}}}} \: \: \bigstar \\ \\\)

Now, we'll substitute the values in the formula :

\(\\{ \longrightarrow \qquad{ {{ \sf{ { \: Surface\: area_{(cuboid)}=2(8.6 + 6.4 + 8.4 }}}}}}) \: \: \\ \\\)

\({ \longrightarrow \qquad{ {{ \sf{ { \: Surface\: area_{(cuboid)}=2(48 + 24 + 32 }}}}}}) \: \: \\ \\\)

\({ \longrightarrow \qquad{ {{ \sf{ { \: Surface\: area_{(cuboid)}=2(104 }}}}}}) \: \: \\ \\\)

\({ \longrightarrow \qquad{ { \pmb{ \frak{ { \: Surface\: area_{(cuboid)}=208 }}}}}}\: \: \\ \\\)

Therefore,

Answer:

Given :

length offshore = CS=√(1+X^2)

Cable charged = 5000√(1+X^2)

onshore length = 4-X

laying cost = 3000(4-X)

total cost:

C=5000√(1+X^2) +3000(4-X)

DC/DX

= [5000*(0.5)*2X/{√(1+X^2)}]-3000=0... for optimum

5000X=3000√(1+X^2)

25X^2=3+3X^2

22X^2=3

X=√(3/22)

= 0.3693 miles

So, it would be laid offshore to S in a manner that

BS=X=0.3693 miles

Onshore=4-0.3693

=3.6307 miles

The probability that a teenager plays varsity sports, given that they play a team sport, is approximately 0.4884 or 48.84%.

To find the probability that a teenager plays varsity sports given that they play a team sport, we can use conditional probability.

Let's denote:

A: Playing varsity sports

B: Playing a team sport

We are given:

P(B) = 43% = 0.43 (Probability of playing a team sport)

P(A) = 21% = 0.21 (Probability of playing varsity sports)

We need to find PA(|B), which represents the probability of playing varsity sports given that the teenager plays a team sport.

The conditional probability formula is:

P(A|B) = P(A ∩ B) / P(B)

P(A ∩ B) represents the probability of both A and B occurring simultaneously.

In this case, the probability of a teenager playing varsity sports and a team sport simultaneously is not given directly. However, we can make an assumption that all teenagers who play varsity sports also play a team sport. Under this assumption, we can say that P(A ∩ B) = P(A) = 0.21.

Now we can calculate P(A|B):

P(A|B) = P(A ∩ B) / P(B)

       = 0.21 / 0.43

      ≈ 0.4884

Therefore, the probability that a teenager plays varsity sports, given that they play a team sport, is approximately 0.4884 or 48.84%.

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Chaya Corporation reports $7,533.33 as gross income from the service contract.To determine the gross incom,  we need to consider the revenue from services provided to clients and the revenue from the service contract.

1. From services to clients:
Chaya Corporation earned $56,500 from providing services to clients. This amount is reported as gross income.

2. From service contract:
The service contract sold on April 1, 2021, for $27,120 is considered unearned revenue initially. For tax purposes, the revenue from the service contract is recognized over the contract period. Since the service contract is for 36 months, the revenue recognized in 2021 would be:
$27,120 / 36 months * 9 months (April to December) = $7,533.33

Therefore, Chaya Corporation reports $7,533.33 as gross income from the service contract.

In total, Chaya Corporation reports $56,500 + $7,533.33 = $64,033.33 as gross income from these transactions in 2021. Rounded to the nearest dollar, the gross income reported is $64,033.

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Answer:

I) 616

II) 4.53

Step-by-step explanation:

For the first one, just plug in 7 as R.

A = 4 x (22/7) x 7^2

A = 12.57142857 x 49

A = 616

For the second, one, put 452 4/7 as A.

452 4/7 also is 258.285

258.285 = 4 x (22/7) x r^2

258.285 = 12.57142857 x r^2

Divide both sides by 12.57142857

20.55372408 = r^2

Square root 20.55372408 for R.

4.533621519 = R

OR

4.53 = R

what are we suppose to do in this?