Can anyone give me the answer ? will give brainliest

The average rate of change of R(t) over the time intervals [t, t + h] , where t is as indicated and h = 1, 0.1, and 0.01 are 210,100 and 100.

What is Differentiation?

Finding a function's derivative, or rate of change, is the process of differentiation in mathematics. The practical approach of differentiation can be performed utilising only algebraic operations, three fundamental derivatives, four principles of operation, and an understanding of how to manipulate functions, in contrast to the theory's abstract character.

Given function :  R(t) = 240 + 30t^3

  R'(t) = 90 t²

So, the average rate of change of R(t) is 90 t² .

Now, over the time interval [t, t + h], it will be as follows:

we know that, f'(t) = {f(t+h) - f(t)} / h

So, when h = 1,  f'(1) = {f(1+1) - f(1)} / 1

                                = f(2) - f(1)

                                = 480 - 270 = 210

when h = 0.1 , f'(1) = {f(1+0.1) - f(1)} / 0.1

                             = {f(1.1) - f(1)} / 0.1

                             = (280 - 270) / 0.1 = 100

when h = 0.01 , f'(1) = {f(1+0.01) - f(1)} / 0.01

                                 = {f(1.01) - f(1)} /0.01

                                 = (271 - 270) / 0.01 = 100

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Answer: $44.04

Step-by-step explanation: Add up all the prices 13.75+15.85+11.95 which is 41.55. Now times 41.55 by 6% which is 2.493. Now add the total and the tax. 41.55 + 2.493 = $44.04 as the final total.

The empirical rule tells us that for a normal distribution with mean μ and standard deviation σ, approximately 99.7% of the observations fall between 98 and 122.

Since the distribution is bell-shaped, we can use the empirical rule (also known as the 68-95-99.7 rule) to estimate the percentage of observations that fall within certain ranges.

According to the empirical rule, for a normal distribution with mean μ and standard deviation σ:

About 68% of the observations fall within one standard deviation of the mean, i.e., between μ - σ and μ + σ.

About 95% of the observations fall within two standard deviations of the mean, i.e., between μ - 2σ and μ + 2σ.

About 99.7% of the observations fall within three standard deviations of the mean, i.e., between μ - 3σ and μ + 3σ.

In this case, the mean is 110 and the standard deviation is 4. Therefore:

About 68% of the observations fall between 110 - 4 = 106 and 110 + 4 = 114.

About 95% of the observations fall between 110 - 2(4) = 102 and 110 + 2(4) = 118.

About 99.7% of the observations fall between 110 - 3(4) = 98 and 110 + 3(4) = 122.

So approximately 99.7% of the observations fall between 98 and 122.

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a result of -$2.00, indicating that, on average, you will lose $2.00 when buying this lottery ticket.

Lose (-$2.00)

The expected win (or loss) for this lottery ticket is -$2.00.

The expected win (or loss) for this lottery ticket is calculated by multiplying the prize amount by the probability of winning and then subtracting the cost of the ticket.

($50 x 0.1%) - $2 = -$2.00

The expected win (or loss) for this lottery ticket is calculated by multiplying the prize amount of $50 by the probability of 0.1% (or 0.001) of winning and then subtracting the cost of the ticket, which is $2. This gives us a result of -$2.00, indicating that, on average, you will lose $2.00 when buying this lottery ticket.

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Speed of Ana =  7.5miles/hour

Step-by-step explanation:

Given,

Ana runs 3/4 mile in 6 minutes.

To find,

The speed of Ana in miles per hour

Recall the formula,

Speed = distance travelled/time taken

60 minutes = 1 hour

Solution:

Distance traveled = 3/4 mile

Time taken = 6 minutes

Since 60 minutes = 1 hour, we have

1 minute =1/60 hour

6 minutes = 6/60 hour

=1/10  hour

Hence speed  = distance travelled/time taken

=  3/4 / 1/10 miles/hour

= 15/2 miles/hour

= 7.5miles/hour

∴ Speed of Ana =  7.5miles/hour

The diameter of a circle is 10 feet.

The circumference of a circle is the perimeter of the circle. It is the total length of the boundary of the circle. The circumference of a circle is the product of the constant π and the diameter of the circle.

Given that, the circumference of a circle is 31.4 ft.

We know that, circumference of a circle is 2πr

Now, 2πr=31.4

2×3.14×r=31.4

6.28r=31.4

r=31.4/6.28

r=5 feet

Then, diameter=2×radius =10 feet

Therefore, the diameter is 10 feet.

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Answer:The answer is B

Step-by-step explanation:

The formal is A = a+b/2 time h

You just substitute the variables and get the answer

The inequality that represents this situation is y - 2x > 16.

Let's start by finding Terry's current winning percentage:

Terry's current winning percentage = 18/35 = 0.5143 (rounded to 4 decimal places)

We want to find out how many of the remaining games Terry needs to win for her winning percentage to be greater than Sandra's winning percentage, given that Sandra doesn't win any more games. Sandra's current winning percentage is:

Sandra's current winning percentage = 24/36 = 0.6667 (rounded to 4 decimal places)

Let x be the number of remaining games and y be the number of games Terry needs to win. Since there are a total of x remaining games and Terry wins y of them, she will have won a total of 18 + y games out of 35 + x games. Therefore, her winning percentage after winning y of the remaining games would be:

(18 + y) / (35 + x)

We want this winning percentage to be greater than Sandra's winning percentage:

(18 + y) / (35 + x) > 24/36

Multiplying both sides by 36(35 + x), we get:

36(18 + y) > 24(35 + x)

Simplifying the left-hand side:

36(18 + y) = 648 + 36y

Simplifying the right-hand side:

24(35 + x) = 840 + 24x

Substituting these simplifications back into the inequality, we get:

648 + 36y > 840 + 24x

Simplifying:

12y - 24x > 192

Dividing both sides by 12:

y - 2x > 16

Therefore, the inequality that represents this situation is:

y - 2x > 16

So Terry needs to win more than twice as many remaining games as the number of games Sandra has won more than her in order to have a winning percentage greater than Sandra's winning percentage.

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The statement "Before using census data, researchers need to consider the timeliness of the data." is true because census data is only accurate and useful when it is up to date.

The United States Census Bureau updates the data every ten years, so the most recent data will be from 2010. Additionally, researchers should be aware of any changes to the census information over time and make sure they are using the most up-to-date version. Furthermore, researchers need to understand the scope of the census data and what it is designed to measure.

The United States Census covers the entire population of the United States, but it is important to know the specific topics covered by each census and what population groups are included. Finally, researchers should be aware of how the census data is collected and the potential for error or bias in the data.

If the data is outdated, it could lead to inaccurate results or conclusions. Therefore, researchers must consider the timeliness of the data before using it in any research project.

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The complete question is:

True or False: Before using census data, researchers need to consider the timeliness of the data.

Answer:

P (of red ball) = 1 - ( 310 + 25 ) = 1 - (3 + 410 ) = 1 - 710 = 10 - 710 P (of red ball) = 310 No. of black balls = 20total no. of balls 25 = 20total balls

Step-by-step explanation:therya goo

Answer:

48

Step-by-step explanation:

If the ratio is 3:4, we can just divide 35 by 3.

Then we get 12, and to get the red balls we can multiply by 4 because that is the ratio

4*12= 48

there are 48 red balls

Answer:

No OK so A. is the correct answer I think

The median should be used to describe a normal or skewed distribution, as it is a better measure of the central tendency than the mean for these types of distributions.

The median is a better measure of the central tendency than the mean when describing a normal or skewed distribution. A normal distribution is a symmetrical distribution of data in which values are evenly spread around the mean. A skewed distribution is when one side of the distribution is longer than the other, with the mean being pulled away from the center. The median is the most appropriate measure of central tendency for both normal and skewed distributions because the mean can be distorted by outliers and extremes in the data. The median is the midpoint in the data and provides a better representation of the middle of the distribution, which can be useful in interpreting the data. Using the median to describe a large distribution or percentage is not as common as it is better to use the mean or mode for these types of distributions.

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Based on the information provided, the number of guests was 8 guests and the equation to represent this situation is 3/8 x + 2 = 5.

The first step to get to know the number of guests is to write an equation, this will help us discover the number of x  or guests. To write the equation, let's include the variable and values given:

3/8 x + 2 = 5

Now, let's solve this equation:

0.375x + 2 = 5

x = 5 -2/ 0.375

x = 3 / 0.375

x = 8 guests

Based on the above, it can be concluded that the number of guests, in this case, was 8.

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Which quantity is unknown?

the number of guest

_____________________________________

Write an equation that represents the situation.

3/8g + 2 = 5

_____________________________________

How many guests does David have?

g = 8

Answer:

Step-by-step explanation:

10, 20, 30, 40, 50

The experimental probability of selecting the name Alex would be  40 % or 2 / 5

The experimental probability of selecting the name Alex can be found by the formula :

= Number of times Alex is drawn / Number of total draws x 100 %

Number of times Alex is drawn = 4 times

Number of total draws = 10 draws

The experimental probability of selecting Alex would therefore be :

= 4 / 10 x 100 %

= 0. 4 x 100 %

= 40 % or 2 / 5

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The price of new Tv is 107,990 including VAT .The percentage increase in price of tv is 8% in rate.

The current price of the plasma TV including VAT at 5% is 99,990 naira.

If the government raises VAT to 8%, the new price of the TV including VAT can be calculated as follows:

New price = current price * (1 + new VAT rate)

New price = 99,990 * (1 + 0.08)

New price = 107,992.2

Rounding the new price to the nearest 10 naira gives: 107,990 naira.

The increase in price of the TV can be calculated as follows:

Price increase = new price - current price

Price increase = 107,990 - 99,990

Price increase = 8,000

The percentage increase in price of the TV can be calculated as follows:

Percentage increase = (price increase / current price) * 100%

Percentage increase = (8,000 / 99,990) * 100%

Percentage increase = 8.0%

Therefore, the new price of the TV including VAT at 8% is 107,990 naira, and there is a 8.0% increase in price.

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____The given question is incomplete, the complete question is given below:

The advertised price of a plasma tv is 99,990 naira including vat at 5%. If the government raises vat to 8%,calculate the new price of the tv ,(to the nearest 10 naira) what is the percentage increase in price of the tv?

The approximate length of arc CB is given as follows:

14.17 cm.

The circumference of a circle of radius r is given by the multiplication of 2 by the number π = 3.14 and the radius r, as follows, hence the equation is given as follows:

C = 6.28r.

The radius for this problem is given as follows:

r = 7 cm.

The angle relative to arc CB is given as follows:

2 x 58º = 116º.

As an entire circumference has an angle of 360º, the approximate length of arc CB is obtained as follows:

116/360 x 6.28 x 7 = 14.17 cm.

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If you were to  graph a sine function from the data listed in the table the days since Jan 8 is an independent variable and amount of moon visible is dependent variable

Given that, we have to graph a sine function from the data listed in the table

From the table we can see that there a two types of variables, The days since the Jan 8 and the amount of moon visible

The independent variable is defined as the variables that does not depends on any other variables

The dependent variable is defined as the variables that depends on other variables

Here the days since the Jan 8 does not depends on any other variables, so it is an independent variable. similarly the amount of moon visible depends on the days since Jan 8 value, so it is a dependent variable

Therefore, the days since Jan 8 is an independent variable and amount of moon light visible is dependent variable

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The given question is incomplete, the complete question is :

if you were to graph a sine function from the data listed in the table above, what values would be represented by the dependent variable and what would be represented by the independent variable?

Answer: 3x+7+4x-2

Step-by-step explanation: 3x+4=7x

7-2=5

so the answer should be 7x+5

The probability that the bird feeder will be visited by more than 5 birds in a 40 minute period during daylight hours is 0.835.

In the question Justin has a bird feeder which gets visited by an average of 18 birds every 2 hours during daylight hours and we have to find what is the probability that the bird feeder will be visited by more than 5 birds in a 40 minute period during daylight hours.

This can be calculated using the Poisson distribution formula, P(X > 5) = 1 - P(X ≤ 5).

P(X > 5) = 1 - P(X ≤ 5)

= 1 - (P(X=0) + P(X=1) + P(X=2) + P(X=3) + P(X=4) + P(X=5))

= 1 - (0.0022 + 0.0133 + 0.0514 + 0.1245 + 0.2141 + 0.2769)

= 0.8351

Therefore, the probability that the bird feeder will be visited by more than 5 birds in a 40 minute period during daylight hours is 0.835.

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The fraction of pizza that each of them gets out of the whole pizza is 1/9.

What is meant by a fraction?

The components of a whole or group of items are represented by fractions. A fraction consists of two components. The numerator is the figure at the top of the line. It details the number of equal portions that were taken from the total or collection. The denominator is the figure that appears below the line. A piece or sector of any quantity is another name for the fraction. Some of the different types of fractions are:

proper fractions, improper fractions, mixed fractions and so on.

Given 1/3rd portion of the pizza is shared by Nicole, James and Jenny.

Let us are assuming they shared the 1/3rd portion equally among themselves.

Then,

1/3 pizza = 3 people

1 person = 1/(3*3) = 1/9

Therefore the fraction of pizza that each person gets out of the whole pizza is 1/9.

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(i) none of these ailments, 26

(ii) arthritis but neither of the other two ailments, 17

(iii) exactly one of these ailments, 102

(iv) arteriosclerosis and loss of hearing but not arthritis, 16

We can use a Venn diagram to solve this problem.

Let A, B, and C represent the events of having arthritis, arteriosclerosis, and loss of hearing, respectively. Then, the given information can be represented as:

A = 70

B = 60

C = 80

A ∩ B = 35

A ∩ C = 33

B ∩ C = 31

A ∩ B ∩ C = 15

Using these values, we can find the answers to the questions:

(i) The number of senior citizens with none of these ailments is the complement of the union of A, B, and C. That is:

n(A ∪ B ∪ C)' = n(S) - n(A ∪ B ∪ C)

                      = 200 - (70 + 60 + 80 - 35 - 33 - 31 + 15)

                      = 26

Therefore, 26 senior citizens had none of these ailments.

(ii) The number of senior citizens with arthritis but neither of the other two ailments is:

n(A) - n(A ∩ B) - n(A ∩ C) + n(A ∩ B ∩ C)' = 70 - 35 - 33 + 15

                                                                   = 17

Therefore, 17 senior citizens had arthritis but neither of the other two ailments.

(iii) The number of senior citizens with exactly one of these ailments is the sum of the complements of the intersections of the events. That is:

n(A' ∩ B ∩ C') + n(A ∩ B' ∩ C') + n(A' ∩ B' ∩ C) = (200 - 60 - 31 - 15 - 33) + (200 - 70 - 31 - 15 - 33) + (200 - 70 - 60 - 15 - 35) = 102

Therefore, 102 senior citizens had exactly one of these ailments.

(iv) The number of senior citizens with arteriosclerosis and loss of hearing but not arthritis is:

n(B ∩ C) - n(A ∩ B ∩ C) = 31 - 15 = 16

Therefore, 16 senior citizens had arteriosclerosis and loss of hearing but not arthritis.

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The 8.4% compounded quarterly is the better investment because it gives a good return.

Compound interest is “interest-on-interest”, or the ability of a financial instrument to generate earnings on its earnings.  Compound interest, can be calculated using the formula :

[tex]A = P(1 + \frac{r}{n} )^{nt}[/tex]

where A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

(i)S = P

S = P(1.0854) (1.0854)

AP(1) = 1.0846 - 1

AP(1)= 0.08546 or 8.546%

(ii)r = 0.084/4

AP(2) = (1 + 0.084/4)⁴ -1

AP(2) = 1.08688 - 1

AP(2) = 8.668%

The 8.4% compounded quarterly investment is therefore preferable.

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Answer:

Step-by-step explanation:

The vertex of the equation y = |x - 2 + 1| is (2, 1). The range of the equation depends on the value of x. When x < 2, the equation becomes y = -x + 1, which gives us a line with a slope of -1 that intersects the y-axis at (0,1) and has a minimum value of 1. When x >= 2, the equation becomes y = x - 1, which gives us a line with a slope of 1 that intersects the y-axis at (0,-1) and has no minimum value. Therefore, the range of the equation y = |x - 2 + 1| is [1, infinity).

If both bound trains leave together at 8, they will also start together at 11:45 the next time.

The LCM of two numbers is the smallest possible number that is divisible by both of those two numbers. The prime factorization and the division methods are generally used to find the LCM.

An eastbound train leaves the station every 25 minutes whereas a westbound train leaves the station every 45 minutes.

These two types of trains will leave the station together if the time is divisible by both 25 and 45, that is, the LCM of them.

Find the LCM of 25 and 45 using the prime factorization method.

25=5×5

45=3×3×5

LCM(25,45)=3×3×5×5

=225

As 1 hour equals 60 minutes, it follows that 225 minutes equals 3 hours and 45 minutes.

If 3 hours 45 minutes is added to 8 hours, it will be 11 hours 45 minutes.

Therefore, the two trains leave the station together at 11 hours 45 minutes.

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Answer:

I suppose she also paid $100 because a 20% off from Thiago could mean that the original price was 120.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The total cost for Nayeli to enter the amusement park is $40. If she goes on 9 rides, the cost for the rides would be 9 * $2 = $18. Therefore, the total cost for Nayeli to enter the park and go on 9 rides would be $40 + $18 = $58.

To find the total cost if she goes on r rides, we can use the formula:

Total cost = $40 + r * $2

So, if Nayeli goes on r rides, she would have to pay $40 + r * $2 in total.

To calculate the total cost, multiply the number of rides by the cost per ride and add it to the admission price.

To calculate the total amount Nayeli would have to pay if she goes on 9 rides, we need to first calculate the cost of admission. The admission price is $40. Then, we multiply the number of rides (9) by the cost per ride ($2) and add it to the admission price to get the total cost.
Total cost = Admission price + (Number of rides x Cost per ride) = $40 + (9 x $2) = $40 + $18 = $58.
If Nayeli goes on 'r' rides, we can use the same formula to calculate the total cost. The total cost would be the admission price ($40) plus the product of the number of rides ('r') and the cost per ride ($2). Total cost = $40 + (r x $2) = $40 + $2r.

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the sum of each infinite geometric series sum is 36

If the ratio between any two consecutive terms in a series of numbers is always the same, the progression is said to be geometric. The ratio of any two successive terms in the sequence (common difference) must be the same for the sequence 2, 4, 8, or 16 to be a general prime.

S = a/1-r is a general formula for calculating the sum of an infinite geometric series, where s stands for the sum, a1 is the series first term, and r is the common ratio.

a = first term = 18

r = common ratio = 1/2

sum of Geometric progression

r< 1

S∞ = a/(1-r)

S∞ = 18/(1-1/2) =36

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