an electric car's home battery charger uses 6.1 kilowatt for 11 hour. if electricity costs $0.05 per kilowatt-hour, how much (in dollars, to the nearest penny) does it cost to charge the car's battery? use exact numbers; do not estimate.

Answer:

240 tickets sold

Step-by-step explanation:

first, you would set up the proportion by writing [tex]\frac{228}{95} =\frac{x}{100}[/tex]

with "x" being the number of seats that needs to be sold

then, you would cross multiply

and you get

[tex]95x=228*100[/tex]    next, you simplify to get the inequality [tex]95x=22800[/tex]

then divide both sides by 95

[tex]x=240[/tex]

so 240 tickets to fill all the seats

hope this helps ;)

The probability that two of those selected will be from the manufacturing department and one will be from the accounting department is approximately 0.409.

To solve the problem, we first need to find the total number of ways to select 3 people out of the 12 people in the company, which is given by the combination formula:

C(12,3) = 12! / (3! * (12-3)!) = 220

Next, we need to find the number of ways to select 2 people from the manufacturing department and 1 person from the accounting department. We can do this by using the combination formula again:

C(6,2) * C(4,1) = (6! / (2! * (6-2)!)) * (4! / (1! * (4-1)!)) = 90

Finally, we can find the probability by dividing the number of desired outcomes by the total number of possible outcomes:

P(2 manufacturing, 1 accounting) = 90 / 220 ≈ 0.409

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The formula for the volume of a cylinder is:

V = πr^2h

where r is the radius and h is the height of the cylinder.

Substituting the given values, we get:

V = π(7^2)(13)

= 1274π

≈ 3993.87 cubic inches (rounded to the nearest hundredth)

Therefore, the volume of the cylinder is approximately 3993.87 cubic inches.

Answer:

152.4 centimeters.

Step-by-step explanation:

1 inch = 2.54 centimeters

60 inches = x centimeters

Where x is the number of centimeters equivalent to 60 inches.

To solve for x, we can set up a proportion:

1 inch / 2.54 centimeters = 60 inches / x centimeters

Cross-multiplying, we get:

1 inch * x centimeters = 2.54 centimeters * 60 inches

Simplifying, we get:

x = (2.54 cm/in) * (60 in)

x = 152.4 cm

Therefore, 60 inches is equivalent to 152.4 centimeters.

A) The probability that the sample mean is within $500 of the population mean for a sample of size 60 is 0.6611

B) The probability that the sample mean is within $500 of the population mean for a sample of size 120 is 0.7362

The EAI (Error of the Estimate) sampling problem is a specific case of the Central Limit Theorem, which states that the distribution of sample means from a population with a finite variance will be approximately normally distributed as the sample size increases.

The formula for calculating the standard error of the mean is

SE = σ/√n

where SE is the standard error, σ is the population standard deviation, and n is the sample size.

For n = 30, SE = 4,000/√30 = 729.16

A. For a sample size of n = 60, SE = 4,000/√60 = 516.40

To find the probability that the sample mean is within $500 of the population mean, we need to calculate the z-score for a range of +/- $500

z = (x - μ) / SE

where x is the sample mean, μ is the population mean, and SE is the standard error.

For a range of +/- $500, the z-scores are

z = ($51,300 - $51,800) / 516.40 = -0.969

z = ($52,300 - $51,800) / 516.40 = 0.969

Using a standard normal distribution table, the area between z = -0.969 and z = 0.969 is 0.6611.

B. For a sample size of n = 120, SE = 4,000/√120 = 368.93

Following the same steps as above, the z-scores for a range of +/- $500 are

z = ($51,300 - $51,800) / 368.93 = -1.364

z = ($52,300 - $51,800) / 368.93 = 1.364

Using the standard normal distribution table, the area between z = -1.364 and z = 1.364 is 0.7362.

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answer is : x 25. y = 20 both y's will cancel . 2x =50.=x=25

The surface area of a square pyramid with a side length of 6cm and a slant height of 7cm is 110cm²

Given side length of the square pyramid (a) = 6cm

Given slant height of the square pyramid (l) = 7cm

The formula for finding the surface area of a square pyramid is = a²+2al

By substituting the given values in the above formula we can obtain the value of the surface area of the square pyramid.

So, Surface Area = a²+2al = (6)² + (2 x (6) x (7))

                    Surface Area = 36 +  84

                    Surface Area = 110cm²

From the above solution, we can conclude that the surface area of the given square pyramid of length 6cm, and slant height 7cm is 110cm².

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Answer: The outlier is 93 is an outlier. Since an outlier exists, median and IQR are the best measures of center and variation to represent this data set

To save on shipping costs, Camile should choose a box that is lightweight and has a small volume.

This is because she has realized that she is charged based on the volume of the box and not the weight.

Therefore, a smaller volume box would cost her less than a larger volume box of the same weight.

For example, if Camile needs to ship a 5-pound item, she should choose a smaller box with a volume that is just enough to fit the item, rather than a larger box with more empty space. This is because the larger box would have a greater volume, and therefore, incur a higher shipping cost even though it weighs the same as the smaller box.

In summary, when selecting a box to save on shipping costs, it is important to consider both weight and volume. Camile should choose a box that is lightweight and has a smaller volume to reduce her shipping costs.

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C21 represents 4 senior boys.

A matrix, which is used to represent a mathematical object or an attribute of one, is a rectangular array or table containing numbers, symbols, or expressions that are organized in rows and columns. is a matrix having two rows and three columns, for instance

Given:

[tex]\left[\begin{array}{ccc}5&6\\4&3\\\end{array}\right][/tex], [tex]\left[\begin{array}{ccc}c11&c12\\c21&c22\\\end{array}\right][/tex]

[tex]\left[\begin{array}{ccc}Junior boy&Junior girl\\Senior boy&Senior girl\\\end{array}\right][/tex]

4 Senior boys is c21 represented.

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Cash was paid for salaries during 2014 was $55,100. These are the formulas for calculating the cash salary received in 2014:

Salary paid in cash = Salary expense in 2014 - Reduction in salary payable

The difference between the balance due for salaries at the end of each year—that is, at December 31, 2013 and December 31, 2014—can be used to determine the decline in salaries payable:

Salaries payable at December 31, 2013, compared to salaries payable at December 31, 2014, are $3,700, $1,800, and $1,900, respectively.

The drop in the balance of salaries payable from 2013 to 2014 indicates that the business paid more compensation than it incurred for the year. As a result, the 2014 salary payments in cash are:

Cash paid for salaries equals salaries paid in 2014 less salaries payable, or $57,000 minus $1,900, or $55,100.

Hence, (A) $55,100 is the correct response.

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A good prediction for the number of times a 5 will be rolled out of 50 rolls of a 6-sided number cube is 8 times.

Assuming the number cube is fair and each outcome has an equal probability of occurring, we can use the concept of probability to make a prediction for the number of times a 5 will be rolled.

Since there are six possible outcomes, each with a probability of 1/6, the expected frequency of rolling a 5 in one roll is:

1/6 x 50 = 8.33

This means that if the number cube is rolled 50 times, we would expect to see a 5 appear approximately 8.33 times. However, since we cannot roll a fraction of a time, we need to round this number to the nearest whole number.

Rounding 8.33 to the nearest whole number, we get:

8

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Complete question is:

A 6-sided number cube with sides labeled 1,2,3,4,5, and 6 is rolled 50 times. What is a good prediction for the number of times a 5 will be rolled?

The function has been solved, and f (t) = 15 - 3t, with n days equal to 5.

Given data ,

There were 15 inches of snow on the ground on Monday morning. As the temperature increased, 3 inches of snow had evaporated by Tuesday morning. By Wednesday morning, three more inches had melted, and the pattern persisted.

The following factors affect this situation:

Time: Indicates how many days have elapsed since Monday morning.

Measures how much snow is still on the ground in inches.

Given that the amount of snow is reducing by a given amount every day, the situation may be modelled using a linear function.

f(t)= 15-3t

when f ( t ) = 0

15 = 3t

Divide by 3 on both sides:

t = 5 days

Therefore, after 5 days, all of the snow will have melted.

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Answer:

152 cm, 161 cm, and 162 cm

The common ratio is -1/3 and the initial term is -4, then the formula is:

A(n) = -4*(-1/3)^(n - 1)

Remember that in a geometric sequence, to get the next term we need to multiply the previous term by the common ratio.

To get the common ratio, take the quotient between two consecutive terms.

We will get:

(4/3)/(-4) = -1/3

Then the n-th term of the geometric sequence is:

A(n) = -4*(-1/3)^(n - 1)

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Answer:

[tex](-4)\left(\frac{1}{3}\right)^{n-1}[/tex]

Step-by-step explanation:

The common ratio between any two terms in a geometric sequence is constant. Let this ratio be denoted by r. Then, we have:

[tex]r = \frac{\frac{4}{3}}{-4} = \frac{-\frac{4}{9}}{\frac{4}{3}} = \frac{\frac{4}{27}}{-\frac{4}{9}} = \frac{1}{3}[/tex]

Using this value of r, we can write the formula for the nth term an as:

[tex]an=[/tex][tex](-4)\left(\frac{1}{3}\right)^{n-1}[/tex]

The total surface area to paint is 22000 sq. ft.

Surface area is the measurement of the outer surface of an object. It is often used to calculate the area of a three-dimensional object, such as a cube, cylinder, or sphere, and is also used to calculate the area of the faces of a solid object. Surface area is measured in square units such as square centimeters (cm2), square meters (m2), or square inches (in2).

Surface Area = 2(lw + lh + wh)

Surface Area = 2((100' x 50') + (100' x 40') + (50' x 40'))

Surface Area = 2(5000' + 4000' + 2000')

Surface Area = 2(11000')

Surface Area = 22000 sq. ft.

Answer: The total surface area to paint is 22000 sq. ft.

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Answer:

2200

Step-by-step explanation:

The time required to ring up the customer with 11 items is; 20 seconds

A linear equation is defined as an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form Ax + B = 0. Here, x is a variable, A is a coefficient and B is constant.

We are given the linear equation:

t = p + 9

Where;

p is the variable that represents the number of items being purchased

t reprensts the time required to ring up the customer.

Thus:

When p = 11 items, we have:

t = 11 + 9

t = 20 seconds

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Answer:

a=60 (12*5=60)

b=7 (45/9=5 5+2=7)

c=62

d=25 (11*5=55 55-30=25)

Answer:

The mathematical property demonstrated by the statement 3 + (-6) = -6 + 3 is the commutative property of addition.

This states that: A + B = B + A

The commutative property of addition is the property that is demonstrated by the formula "3 + (-6) = -6 + 3".

This characteristic states that the sum is unaffected by the sequence in which two numbers are added. In other words, a + b = b + a for any two numbers a and b.

In this instance, the left side has 3 + (-6) which equals -3. We have -6 + 3 on the right side, which also equals -3. This indicates that the result is unaffected by the sequence in which the numbers are added.

We can thus write:

3 + (-6) = -6 + 3

-3 = -3

This demonstrates the truth of the assertion and serves as an illustration of the commutative property of addition.

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In the event of shortening the standard error of mean to 15 we have to increase the size to 400. Therefore, the correct answer is Option B.

The  given standard error of the mean for a sample of 100 is 30. So to cut the standard error of the mean to 15, we have to proceed by increasing the sample size to 400.

The  formula for evaluating the standard error of mean
SEM = SD / √(n)
here, SEM = standard error of the mean,
SD = standard deviation
n = sample size
Staging the values
15 = SD / √(100)
15 x √(100) = SD
SD = 150
Now evaluating for the value of n
15 = 150 / √(n)
15 x √(n) = 150
√(n) = 10
n = 100
Now looking at the formula, we need to decrease SEM by half,

So we proceed by increasing the  sample size by a factor of 4.

In the event of shortening the standard error of mean to 15 we have to increase the size to 400. Therefore, the correct answer is Option B.

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a) A recurrence relation, aₙ = aₙ₋₂ + aₙ₋₃

is for the different signals that can be sent in n microseconds.

b) Initial conditions are a₀ = 0, a₁ = a₂ = 1

c) The number of messages sent in 12 microseconds are equal to 16.

A recurrence relation is an equation form for nth term of a sequence of numbers which is equal to some combination of the previous terms. We have a messages are sent over a communications channel using two different signals. Let an be different number of messages that can be transmitted in n microseconds. In case of First signal, it required 2 microsecondes time to tramissmit the signals. So, the different number of signals that can be transmitted in 2 microseconds are [tex]a_{n - 2} [/tex]

In case of second signal , Time required by second signal to to transmit signal = 3

microsecondes

So, different number of messages that can be transmitted in 3 microseconds are

[tex]a_{n - 3} [/tex]

Each signal of a message is transmitted one by one.

a) A recurrence relation for the number of different signals that can be sent in n microseconds is written as

[tex]a_n = a_{n - 2} + a_{n - 3}[/tex]

hat is an us sum of different signals transmitted by each signals.

b) recurrence relation is

[tex]a_n = a_{n - 2} + a_{n - 3}[/tex]

so, the initial conditions of the recurrence relation in part (a) is n = 3 , [tex]a_3 = a_1 + a_0 [/tex]

a₀ = 0, a₁ = 1 , a₂ = 1

c) Different messages can be sent in 12 microseconds is determined by plugging the value in recurrence relation, a₃

= a₁ + a₀ = 1 + 0 = 1

a₄ = 1 + 1 = 2

a₅ = 1 + 1 = 2

a₆ = 2 + 1 = 3

a₇ = 2 + 2 = 4

a₈ = 3 + 2 =5

a₉= 4 + 3 = 7

a₁₀= 5 + 4 = 9

a ₁₁ = 7 + 5 = 12

a₁₂ = 9 + 7 = 16

Hence, required value is 16.

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The length of wire per unit length is 8.168 cm.

Its function is to produce a regulated magnetic field through a coil twisted into a compact helix. The solenoid is a sort of electromagnet.

The magnetic field inside a solenoid is given by:

B = u*n*I

where B is the magnetic field, u is the permeability of free space, n is the number of turns per unit length, and I is the current.

The number of turns in a solenoid is given by:

N = n*L

where N is the total number of turns, L is the length of the solenoid, and n is the number of turns per unit length.

Therefore, the magnetic field can be written as:

B = u*N*I/L

Rearranging this equation, we get:

L = u*N*I/B

Substituting the given values, we get:

L = (4*pi*10⁻⁷)*(N=?) * (I=18.0 A) / (B=23.0 mT)

The number of turns per unit length is not given, so we cannot determine the total number of turns N. However, we can calculate the length of wire per unit length by using the formula for the circumference of a circle:

C = 2*pi*r

where r is the radius of the solenoid.

Substituting the given values, we get:

C = 2*pi*(d/2) = pi*d = 8.168 cm

Therefore, the length of wire per unit length is 8.168 cm.

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For the mean weight five boxes of cookies, the p-value is equals to 0.04189. If p-value is 0.233 > α, the conclusion is that mean weight of cookies is equals to 16.

We have total five boxes of cookies. Let population of weights is normally distributed, 15.91, 14.07 , 14.88, 16.07, 14.79. Use t.test to determine the p value and hypothesis testing for mean weight of product ( cookies). Let null and alternative hypothesis be defined as

[tex]H_0 : \mu = 16[/tex]

[tex]H_a : \mu<16[/tex]

degree of freedom, df = n - 1 = 5

Using the t-test formula, t value= -2.291,

Using t distribution table and the value p-value for t = -2.2907 and 4 degree of freedom is 0.04189. Hence, required value is 0.04189.

b) Now, p-value = 0.233 for mean weight varied from the specified value of 16.

Level of significance, [tex]\alpha[/tex] = 0.05

As we see p-value = 0.233 > 0.05 ( α), so, this is a significant region and null hypothesis can't be rejected. There is no enough evidence to conclude that the mean weight is actually less than 16 ounces.

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Complete question:

Following are the weights of 5 boxes of cookies, each of which is labeled as containing 16 ounces. Assume that the population of weights is normally distributed, 15.91, 14.07 , 14.88, 16.07, 14.79 . A quality control inspector wants to know whether the mean weight is actually less than 16 ounces. Compute the P-value of the test. Write down your P-value. Also, if he obtained a p-value of 0.233. which conclusion is appropriate?

Matching of the equation will be:

A) x= -7

B) x= 3

C) x= 9

An equation simply has to do with the statement that illustrates the variables given. In this case, it is vital to note that two or more components are considered in order to be able to describe the scenario.

A) 3(x-5) = 2(x-11) has x= -7 as the solution.

B) 4(3x+7) -5 = 12x +8 has x= 3 as the solution.

C) 3(x+1) -2x = x+3 has x= 9 as the solution.

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Answer:

19.25

Step-by-step explanation:

You add up all three sides which would be 10+3.25+6 to get the awnser 19.25

Answer:

1) She needs (35 × 2) + 8 = 78 inches

The inequality to find the number of tablespoons of flour actually used in a recipe is |t - 48| <= 4. The correct answer is D.

Since the recipe calls for 3 cups of flour with a variation of up to 4 tablespoons, the total amount of flour used can vary between 3 cups - 4 tablespoons and 3 cups + 4 tablespoons. Converting tablespoons to cups, this becomes 3 cups - 1/4 cup and 3 cups + 1/4 cup.

Thus, the range of cups of flour used is [3 - 1/4, 3 + 1/4], which is [2.75, 3.25]. Multiplying by 16 to convert back to tablespoons, we get the range [44, 52].

So, the inequality that could be used to find the number of tablespoons of flour actually used in the recipe is

|t - 48| <= 4

where t is the number of tablespoons of flour used. So, the correct option is D).

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Answer:

color cube

Step-by-step explanation: