Which percent of Americans chose to go back to work after retiring?(1 point) Responses 10% 10% 20% 20% 30% 30% 40% 40%

Answer:

500 ml

Step-by-step explanation:

1 liter = 1 000 ml

1 / 2 liters = 1000 ml /2 = 500 ml

1000ml - 500 ml = 500 ml

Answer The formula df = (c – 1) (r – 1) is used to find the degree of freedom – The degree of freedom of the chi-square test is calculated by the formula df = (c – 1) (r – 1), where c represents the column number of cell and r represents the row number of the cell.

Step-by-step explanation:

hope it helps you........

Answer:

$0.80

Step-by-step explanation:

Let y be the number of cakes that can be bought then...

xy=4

y(2x+1)=13

Distribute the y to each term in the parentheses...

y(2x)+y(1)=13

2xy+y=13

xy=4

Multiply the second equation by 2...

2xy+y=13

2xy=8

Solve the equation using elimination (subtract the two equations and eliminate 2xy)...

y=13-8=5

Now, plug 5 back in for y to solve for x...

xy=4

5x=4

Divide both sides by 5

x=$0.80

The first quartile (Q1) is 30, which means 25% of the data falls below 30.

The second quartile (Q2) is 60, which is also the median value of the entire data set.

The third quartile (Q3) is 86, which means 75% of the data falls below 86.

The given data set is: 86, 13, 60, 55, 61, 97, 30, 98, 79, 52, 18

Arranging the data in ascending order: 13, 18, 30, 52, 55, 60, 61, 79, 86, 97, 98

Since we have an odd number of data points (11), the median is the value at the middle position. In this case, the middle position is the sixth value.

Median (Q2) = 60

The second quartile (Q2) is 60.

To find the first quartile, we need to find the median of the lower half of the data set. Since we have an odd number of data points in the lower half (5 data points), the median is the value at the middle position.

Lower half of the data: 13, 18, 30, 52, 55

Median of the lower half = 30

The first quartile (Q1) is 30.

To find the third quartile, we need to find the median of the upper half of the data set. Again, since we have an odd number of data points in the upper half (5 data points), the median is the value at the middle position.

Upper half of the data: 61, 79, 86, 97, 98

Median of the upper half = 86

The third quartile (Q3) is 86.

To know more about quartile here

https://brainly.com/question/29809572

#SPJ4

Answer:

-6-8x

Step-by-step explanation:

distribute and multiply

Answer:

-6-8x

Step-by-step explanation:

Answer:

.44444444

Step-by-step explanation:

πr²=full circumference

18/π(9)²=x/2π

This is the formula for calculating the present value of a future payment, where P1 is the present value, P2 is the future payment, and R is the interest rate.

To use the formula, you need to know the value of P2, the future payment, and the interest rate, R. Then, you can solve for P1, the present value of that payment. The formula works by discounting the future payment to account for the time value of money, which means that money today is worth more than the same amount of money in the future.

Learn more about present value,

https://brainly.com/question/17322936

#SPJ4

Step-by-step explanation:

the answer is 9=3;/5

To find the relationship between the height of the water and the volume of the water in the tank, we can use the formula for the volume of a cone. Let's denote the height of the water as h (in meters) and the radius of the water surface as r (in meters).

Given that the diameter at the top of the tank is 4.0 meters, the radius can be calculated as half of the diameter, which is 2.0 meters. Since the height of the tank is 7.0 meters, we can write the following proportion:

h / 7.0 = r / 2.0

This proportion allows us to express the radius in terms of the height:

r = (2.0/7.0)h

Now, we can express the volume of the water as a function of the height:

V = (1/3)πr^2h = (1/3)π[(2.0/7.0)h]^2h

Simplifying this expression, we have:

V = (4/21)πh^3

Next, we can differentiate the volume with respect to time (t) to find the rate of change of volume with respect to time:

dV/dt = (4/21)π(3h^2)(dh/dt)

We are given that dV/dt = R - 13100.0 and dh/dt = 30.0 cm/min. We can substitute these values into the equation and solve for R:

R - 13100.0 = (4/21)π(3h^2)(dh/dt)

R - 13100.0 = (4/21)π(3(4.5)^2)(30.0)

R - 13100.0 = 0.9524π

R = 13100.0 + 0.9524π

Therefore, the rate at which water is being pumped into the tank is approximately 13100.0 + 0.9524π cubic centimeters per minute.

Learn more about denote here

https://brainly.com/question/1136789

#SPJ11

Answer:

D

Step-by-step explanation:

When you have two opposite numbers on a numberline, that is, a digit that has a negative value and the same digit having a positive value, when you add them together, we would have 0.

i.e. -a + b = 0

In the above options given, the numberline that shows this particular case is the numberline in option D.

In option D numberline, the sum of -1 and +1 equals zero.

Answer:

It's B

Step-by-step explanation:

It goes up 7 and then goes down 7 making go back to zero

It is NOT D

Answer:

6s2

= 6(2)2

= 12 × 12

= 144

: The value of the expression is equal to 144

The number of girls in a population of 320 students that would ride the bus is approximately 211.

Based on the given survey results, the number of girls who ride the bus is 23.

To find out the number of girls in a population of 320 students that would ride the bus, we need to first calculate the percentage of girls who ride the bus.

Total number of girls surveyed = 23 + 5 + 7 = 35

Percentage of girls who ride the bus = (23/35) x 100% = 65.71%

Now, we can calculate the number of girls in a population of 320 students that would ride the bus as follows:

Number of girls who would ride the bus = (65.71/100) x 320 = 210.75

Since we cannot have a fractional part of a person, we need to round off the answer to the nearest whole number.

Therefore, the number of girls in a population of 320 students that would ride the bus is approximately 211.

For similar question on population.

https://brainly.com/question/27859177

#SPJ11

Answer: 1 × 10^8

Step-by-step explanation:

The standard form is written as:

= c × 10^n

For example if we are told to change 200 to standard form, it'll be:

200 = 2 × 10^2

Therefore, 10 to the 8th power in standard form will be:

= 1 × 10^8

Answer:

the answer is 2....................

Answer:

1 1/4

Step-by-step explanation:

3 - 1 = 2

2 - 3/4 = 1 1/4

Each sticker costs 5 cents

Answer:

$0.05

Step-by-step explanation:

1. Since we want to find how much 1 single sticker costs, and 20 stickers equal 1 dollar, let's write it as a ratio: \(\frac{20}{1} = \frac{1}{x}\)

2. Now, let's solve the ratio.

Therefore, one sticker costs $0.05.

Answer:

\(\pi=\frac{v}{hr^2}\)

Step-by-step explanation:

So we have:

\(v=\pi r^2h\)

And we want to solve for π.

First, divide both sides by h:

\(\frac{v}{h}=\pi r^2\)

Now, divide both sides again by r²:

\(\pi=\frac{v}{hr^2}\)

And this is our answer :)

Answer:

\(\frac{v}{r^{2} h} = \pi\)

Step-by-step explanation:

Simply divide both sides by \(r^{2}h\) to get pi by itself.

Answer:

382 cm²

Step-by-step explanation:

Front face + Back face:

A = 2(a + b)h/2

A = 2(14 cm + 8 cm)(7 cm)/2

A = 154 cm²

Left face:

A = 7 cm × 6 cm = 42 cm²

Right face:

A = 9 cm × 6 cm = 54 cm²

Bottom face:

A = 14 cm × 6 cm = 84 cm²

Top face:

A = 6 cm × 8 cm = 48 cm²

Total surface area =

= (154 + 42 + 54 + 84 + 40) cm²

= 382 cm²

Answer:

True

Step-by-step explanation:

You need a place holder in both the dividend and the divisor when dividing polynomials.

Answer:

3x = 38

Step-by-step explanation:

x = 38/3

x = 12. 6666 or 12.7

Answer:

Step-by-step explanation:

3x = 38

Divide both sides by 3

x = 38/3

x = 12 2/3

Answer:

Width: w = 12.5 feet

Length: L = 32.5 feet

Step-by-step explanation:

Let's use two variables to represent the dimensions of the rectangular garden:

Let w be the width of the garden (in feet)

Let L be the length of the garden (in feet)

The problem tells us that the length of the fence is 90 feet, so we can write the equation:

2L + 2w = 90

We also know that the length of the fence (L) is 5 feet less than 3 times the width (w). We can write this as another equation:

L = 3w - 5

Now we have two equations with two variables. We can solve this system of equations using substitution or elimination.

Let's use substitution:

Substitute the expression for L in terms of w from the second equation into the first equation:

2(3w - 5) + 2w = 90

Simplify and solve for w:

6w - 10 + 2w = 90

8w = 100

w = 12.5

Now we can use this value of w to find L:

L = 3w - 5 = 3(12.5) - 5 = 32.5

Therefore, the dimensions of the rectangular garden are as follows:

Width: w = 12.5 feet

Length: L = 32.5 feet

Answer:

X+333.22=12.78.

Step-by-step explanation:

It appears that the system dynamics can be manipulated through the control input u to minimize the time required for convergence to the origin (0,0).

Here, we have,

given that,

min t_i

x₁ = x₂-u

x₂ = u

-1 ≤ u ≤ 1, (x₁, x₂) are arbitrary starting point.

and origin  (0,0) be the begging of the coordinate.

also given that, (x₁, x₂)→ (0,0)

so, min t_i at origin (0,0) = t

Therefore, the generality condition of the situation does not met.

so, we get,

The given system can be represented by the following equations:

x₁' = x₂ - u

x₂' = u

To analyze the behavior of the system, we can examine the dynamics of each variable separately.

For x₁:

x₁' = x₂ - u

The equation implies that the rate of change of x₁ is dependent on x₂ and the input u. The term (-u) acts as a control input that can affect the dynamics of x₁. If we choose an appropriate control input u, we can manipulate the rate of change of x₁ and potentially minimize the time required to reach the origin.

For x₂:

x₂' = u

The equation for x₂ indicates that the rate of change of x₂ is solely determined by the input u. The variable x₂ can be directly controlled by the input u, allowing us to influence its behavior and potentially expedite convergence.

Based on the given equations, it appears that the system dynamics can be manipulated through the control input u to minimize the time required for convergence to the origin (0,0).

By carefully selecting the control input, it is possible to achieve the shortest time to reach the origin from any arbitrary starting point (x₁, x₂).

To learn more on rate of change click:

https://brainly.com/question/32765463

#SPJ4

The correct statement is d. a measure of the total kinetic energy and potential energy of the particles of a substance.

The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted between various systems and how work is performed in the process (see the first law of thermodynamics).

Thermal energy refers to the total kinetic energy and potential energy possessed by the particles (atoms or molecules) within a substance. It is a measure of the overall energy content of the substance, taking into account the motion and interactions of its particles. The thermal energy of a substance is influenced by its temperature, as temperature is a measure of the average kinetic energy of the particles. However, thermal energy also includes the potential energy associated with the arrangement and interactions of the particles within the substance.

Therefore, the correct statement is d. a measure of the total kinetic energy and potential energy of the particles of a substance.

Learn more about thermal energy on:

https://brainly.com/question/30849704

#SPJ4

Answer:

kinetic

Step-by-step explanation:

it is using the energy

Answer: B. kinetic energy

Step-by-step explanation: i think this because kinetic energy is the spped of something for example a ball rolling down a hill is kinetic energy