Answer:
The distribution for the number of weeks pregnancy lasts for a mother is typically a unimodal distribution, with a single peak. The majority of pregnancies last around 38-42 weeks, with fewer pregnancies lasting shorter or longer than this period. This creates a bell-shaped curve, with the peak at the most common duration and a gradual decrease in frequency as the duration becomes shorter or longer than the mode.
However, it's worth noting that there can be some variations in this distribution based on different factors, such as the age of the mother, health status, and other demographic characteristics. For example, teenage pregnancies and pregnancies in older women may have slightly different distributions with different peaks due to biological and social factors. Nonetheless, a unimodal distribution is the most commonly observed distribution for the number of weeks pregnancy lasts for a mother.
Life is full of equation solving. You probably don't even realize when you are solving equations.
Take, for instance, your cell phone plan. Your cell phone carrier charges you a flat rate of $60 a month for unlimited talk/text and 4 GB of data. You are charged $5 for every GB you go over. If one month you use 7 GB, how much did you spend? Thought question: If this pattern continues, should you think about switching to the 10 GB plan for $80?
You spent $75 for the month when you used 7 GB of data. It would be worthwhile to upgrade to the 10 GB plan for $80 if you frequently exceed the 4 GB cap.
What is flat rate?No matter how much of a good or service is used or consumed, a flat rate is a set amount that is charged. There are no extra fees or variable expenses; there is just one price that includes all related costs and fees. Utility bills, subscription services, and other recurring costs are frequently priced using flat rates. While they offer a predictable cost and can make budgeting and financial planning easier, they might be beneficial for clients who utilise a high volume of the product or service.
Given that, you are charged $5 for every GB you go over.
Here,
Extra data used = 7 GB - 4 GB = 3 GB
Cost of extra data = 3 GB x $5/GB = $15
Thus,
Total cost = $60 + $15 = $75
Hence, you spent $75 for the month when you used 7 GB of data.
It would be worthwhile to upgrade to the 10 GB plan for $80 if you frequently exceed the 4 GB cap. To decide which plan would be more affordable in the long run, you would need to evaluate the expenses of the two options and take into account your average monthly data use.
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In a data distribution that is skewed left.
The median will be greater than the mean in a left-skewed distribution
We have,
In statistics, skewness is a measure of the asymmetry of a probability distribution around its mean.
A distribution is said to be skewed left if it has a long tail on the left side and the bulk of the data is on the right side.
When the data is skewed left, it means that the distribution is being pulled towards the left side.
This is because there are a few extreme values on the left side that are pulling the mean in that direction.
In contrast, the median is the middle value of the dataset, and it is not influenced by outliers.
For a left-skewed distribution,
The median will be greater than the mean because the mean is being pulled towards the left by the few extreme values.
In a data distribution that is skewed left, the mean will be less than the median.
This is because the mean is sensitive to outliers and is pulled towards the direction of the skewness, while the median is not affected by extreme values and is a more robust measure of central tendency.
Therefore,
The median will be greater than the mean in a left-skewed distribution
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A
,
B
and
C
form a triangle where
∠
B
A
C
=
90
∘
.
A
B
=
12.1
mm and
B
C
=
19.7
mm.
Find the length of
A
C
, giving your answer rounded to 1 decimal place.
Answer:
15.5 mmStep-by-step explanation:
Given:
ΔABC with ∠BAC = 90°, AB = 12.1 mm, BC = 19.7 mmSince BC is opposite to right angle, AC is the missing leg.
Find AC using Pythagorean:
\(AC = \sqrt{BC^2-AB^2} =\sqrt{19.7^2-12.1^2} =\sqrt{241.68} =15.5 mm\)The function g(x) = 8|x – 15| - 30 is a transformation of the parent function p(x) = x. Which of the following correctly describes the transformation of function p that generates function g?
A p is translated 30 units down, then has a vertical shrink by a factor of 8, and then is translated 15 units right.
B. p has a vertical shrink by a factor of 8, then is translated 15 units down, and then is translated 30 units left
c. p is translated 15 units left, then has a vertical stretch by a factor of 8, and then is translated 30 units up.
D. p is translated 15 units right, then has a vertical stretch by a factor of 8, and then is translated 30 units down.
Using translation concepts, it is found that the correct option, which represents the transformation made to function \(g(x) = 8|x - 15| - 30\), is given by:
D. p is translated 15 units right, then has a vertical stretch by a factor of 8, and then is translated 30 units down.
The parent function is:
\(p(x) = |x|\)
The first transformation was \(x \rightarrow x - 15\), which means that it was shifted 15 units to the right.
Then, the function was multiplied by 8, which means that it was stretched vertically by a factor of 8.
Finally, 30 was subtracted from the function, which means that it was shifted down 30 units.
Hence, the correct option is given by:
D. p is translated 15 units right, then has a vertical stretch by a factor of 8, and then is translated 30 units down.
A similar problem is given at https://brainly.com/question/18405655
Why are there two solutions for the equation |6 + y| = 2?
Answer:
it can be negative or positive. You can change the number after the equal to a negative, or a positive depending on what the number is.
55 POINTS ASAP
3. If Adam Ct. is perpendicular to Bertha Dr. and Charles St., what must be true? (1 point)
O Adam Ct. I Edward Rd.
O Bertha Dr. || Charles St.
O Dana La. I Charles St.
Step-by-step explanation:
Option B. Here Adam Ct. is perpendicular to Betha Dr. and Charles. So, St. Bertha Dr. || Charles St. Since they are parallel to each other
Answer: Bertha Dr. || Charles St.
Step-by-step explanation:
Parallel lines are lines in a plane that do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel.
A line is said to be perpendicular to another line if the two lines intersect at a right angle.
Adam Court is perpendicular to Edward Road.
Bertha Drive is parallel to Charles St.
Dana Lane is perpendicular to Edward Road.
If the incandescent lights in the problem above cost $2.12/bulb and have a life span of 1000 hours, how much would 1 year of use (considering the cost of the bulbs and the electricity you calculated above) cost for this type of bulb? (Prorate the cost of bulbs - so if CFLs last more than a year, only include 1 year worth of their life in the expense, if you need multiple sets of incandescent lights do the same)
The total cost of using incandescent lights for one year (including the cost of bulbs and electricity) is $101.82.
We have,
The incandescent lights have a lifespan of 1000 hours, which means that to cover a year, we would need 8 bulbs (since we use the lights for 4 hours per day).
The cost of each bulb is $2.12, so 8 bulbs would cost:
= 8 bulbs x $2.12/bulb
= $16.96
To calculate the electricity cost, we need to use the same formula as before:
Electricity cost = Power x Time x Rate
The power of each bulb is 60 watts, so the total power used by 8 bulbs is:
= 8 bulbs x 60 watts/bulb
= 480 watts
The time the bulbs are used per day is 4 hours, so the total time used per year is:
= 365 days/year x 4 hours/day
= 1,460 hours
The rate is the same as before: $0.12/kWh.
Putting it all together:
Electricity cost = 480 watts x 1,460 hours x $0.12/kWh
Electricity cost = $84.86
The total cost of using incandescent lights for one year (including the cost of bulbs and electricity).
= $16.96 + $84.86
= $101.82
Thus,
The total cost of using incandescent lights for one year (including the cost of bulbs and electricity) is $101.82.
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The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage? b) Assume that a recent survey suggests that about 87% of adults have heard of the brand.
Answer:
He must survey 123 adults.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of \(\pi\), and a confidence level of \(1-\alpha\), we have the following confidence interval of proportions.
\(\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}\)
In which
z is the z-score that has a p-value of \(1 - \frac{\alpha}{2}\).
The margin of error is:
\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)
Assume that a recent survey suggests that about 87% of adults have heard of the brand.
This means that \(\pi = 0.87\)
90% confidence level
So \(\alpha = 0.1\), z is the value of Z that has a p-value of \(1 - \frac{0.1}{2} = 0.95\), so \(Z = 1.645\).
How many adults must he survey in order to be 90% confident that his estimate is within five percentage points of the true population percentage?
This is n for which M = 0.05. So
\(M = z\sqrt{\frac{\pi(1-\pi)}{n}}\)
\(0.05 = 1.645\sqrt{\frac{0.87*0.13}{n}}\)
\(0.05\sqrt{n} = 1.645\sqrt{0.87*0.13}\)
\(\sqrt{n} = \frac{1.645\sqrt{0.87*0.13}}{0.05}\)
\((\sqrt{n})^2 = (\frac{1.645\sqrt{0.87*0.13}}{0.05})^2\)
\(n = 122.4\)
Rounding up:
He must survey 123 adults.
1. Find the scale factor from the large figure to the small figure.
2. Find the scale factor from the small figure to the large figure.
Answer:
sorry I can see the whole answer on the image
which is the same as 10^-3
A. 0.0001
B.0.001
C.3
D.1000
Answer:
B. 0.001Step-by-step explanation:
Your answer is B. 0.001.Thank you ☺️☺️
its answer is option B
0.001
Philip has been experimenting with new recipes at his bakery for the past 8 months. This month, he tried a recipe for lavender vanilla muffins and gave samples to his customers. He asked them to rate the muffins on a scale of 1 to 10 stars. The median rating was 7 stars, and the interquartile range was 4 stars. ) What can you conclude from these data and statistics? Select all that apply. () No customer gave the muffins fewer than 8 stars. A typical rating for the muffins was 7 stars. The middle 50% of customer ratings had a range of 4 stars. Submit
What is the range of the function F(x) graphed below?F(x)= -(x+2)^2+3
Answer:
range of the function F(x) is (-infinity, 3)
Step-by-step explanation:
I do not see the graph function F(x), so will assume that it is a graph of the function F(x) over the complete domain (-inf,inf).
As you can see from the attached graph, the function reaches a maximum at y=+3, and extends all the way to -infinity.
So the range of the function F(x) is (-infinity, 3)
Help please will mark brainliest
Answer:
9.9
Step-by-step explanation:
4.8 x 2 = 9.6
29.5 - 9.6 = 19.9
19.9/2 = 9.95
round up
9.9
Answer:
10 I think
Step-by-step explanation:
Sylvia bought 8 bags of stickers. Each bag costs $2.79 how much did Sylvia spend
Answer:
Sylvia's total cost=$2.79*8
=$22.32
Step-by-step explanation:
I really need help i don't get it can some one help its due by Monday 9/8/22
Answer:
ayannah is correct
Step-by-step explanation:
Ayannah is correct becauseyou can divide both 19 and 133 by 19 which gives you 1/7. 1/7 isn't divisible by anything else so that's the simplest form.
Answer:
Ayanna is correct because 19/133= 1/7
Step-by-step explanation:
Simplest form means reducing fractions to its lowest term.
given the following data and weights of 0.5, 0.3, 0.1, 0.05, and 0.05 (newest to oldest), find the five-period moving average forecast for period 7.
The five-period moving average forecast for period 7 is 10.7.The five-period moving average forecast for period 7 can be calculated as:MA5,7 = 0.5*8 + 0.3*13 + 0.1*11 + 0.05*12 + 0.05*10 = 10
The five-period moving average forecast for period 7 is calculated using a weighted average of the most recent five periods. The weights represent the relative importance of each period in the calculation. The formula is: MA5,7 = 0.5*X6 + 0.3*X5 + 0.1*X4 + 0.05*X3 + 0.05*X2Where MA5,7 is the five-period moving average forecast for period 7 and X6, X5, X4, X3, and X2 are the data for periods 6, 5, 4, 3, and 2 respectively.In this example, the data for each period is as follows:
X2 = 10 X3 = 12 X4 = 11 X5 = 13 X6 = 8 .The five-period moving average forecast for period 7 can be calculated as:MA5,7 = 0.5*8 + 0.3*13 + 0.1*11 + 0.05*12 + 0.05*10 = 10.7Therefore, the five-period moving average forecast for period 7 is 10.7.
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What Did the Baby Porcupine Say
When It Backed Into a Cactus?
each
Answer:
As baby porcupine is backed into cactus, so the spines of cactus will feel like spines of mother porcupine. So the baby porcupine will give call to its mother.
Step-by-step explanation
He said hi Ma.
A family is planning their vacation to Disney World. They will drive from a small town outside New Orleans,
Louisiana, to Orlando, Florida, a distance of 700 miles. They plan to average a rate of 55 mph. How long will this
trip take?
The time taken for the trip will be 12.7 hours.
How to calculate the value?It should be noted that time taken is calculated as:
Time = Distance / Speed
Distance = 700 miles
Speed = 55 mph
Time = 700/55
Time = 12.7 hours.
Therefore, the time taken for the trip will be 12.7 hours.
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What is the total surface area
Answer:
Step-by-step explanation:
Mr. Patel is photocopying lab sheets for his first period class. A particle of toner carrying a charge of 4.0 * 10^9 C in the copying machine experiences an electric field of 1.2 * 10^6 N/C as it’s pulled toward the paper. What is the electric force acting on the toner particle?
Answer:
4.8 * 10^15 Newton
Step-by-step explanation:
Electric field is electric force created by a unit charge. Mathematically it is defined as
Electric field = electric force /charge in coulomb _____(1)
given
Electric field = 1.2 * 10^6 N/C
charge = 4.0 * 10^9 C
substituting above value in equation 1 we have
1.2 * 10^6 N/C = electric force/4.0 * 10^9 C
=> 1.2 * 10^6 N/C * 4.0 * 10^9 C = electric force
=> electric force = 4.8 * 10^15
Thus, electric force acting on the toner particle is 4.8 * 10^15 Newton
I’ll give brainiest
Swimming Pool On a certain hot summer's day, 460 people used the public swimming pool. The daily prices are $1.75 for children and $2.25 for adults. The receipts for admission totaled $965.00.
How many children and how many adults swam at the public pool that day?
LET Children=1.75 and Adults=2.25
x + y = 460 (equation 1)
1.75x + 2.25y = 965.00 (equation 2)
Use Substitution Method
Isolate variable x in equation 1
x = 460 – y (equation 3)
Substitute equation 3 into equation 2
1.75(460 – y) + 2.25y = 965.00
805 – 1.75y + 2.25y = 965.00
-1.75y + 2.25y = -805 + 950
0.5y=145
y=290
Substitute y = 290 into equation 1
x + 290 = 460
x = 170
ANSWER: 290 Children and 170 Adults
Express 83 kilometers per hour in miles per hour.
...
mi/hr
(Round to the nearest hundredth as needed.)
Answer:
83 kilometres per hour =
51.574 miles per hour
VI. In a class of 40 students, the marks obtained in Mathematics (out of 50) are as under: 44,50,44,49,42,47,45,42,44,48,49,48,47 49,47,41,45,48,41,48,41,42,47,49,49,48, 50.47.49.48.46.44.45.45.46.44.42.47.48.45 ow answer the following questions: a) b) c) d) e) Find the number of students getting more than 45 marks. Find the number of students getting less than 45 marks. Find the maximum number of students getting the same marks. Find the average marks obtained by the students in the class. Find the number of students getting more than average marks.
a) To find the number of students getting more than 45 marks, we count the students whose marks are greater than 45 in the given list.
In the given list, the students with marks greater than 45 are: 50, 49, 47, 48, 49, 48, 47, 49, 48, 50, 47, 49, 48, 46, 47, 48, 47.
Counting these numbers, we find that there are 17 students who obtained more than 45 marks.
b) To find the number of students getting less than 45 marks, we count the students whose marks are less than 45 in the given list.
In the given list, the students with marks less than 45 are: 44, 44, 42, 41, 41, 42, 41, 44, 44, 42, 45, 45, 45, 44, 45.
Counting these numbers, we find that there are 15 students who obtained less than 45 marks.
c) To find the maximum number of students getting the same marks, we look for the mark that appears most frequently in the given list.
In the given list, the marks obtained by the students are: 44, 50, 44, 49, 42, 47, 45, 42, 44, 48, 49, 48, 47, 49, 47, 41, 45, 48, 41, 48, 41, 42, 47, 49, 49, 48, 50, 47, 49, 48, 46, 44, 45, 45, 46, 44, 42, 47, 48, 45.
Counting the frequency of each mark, we find that the marks 47 and 48 appear most frequently, with a count of 6 each. Therefore, the maximum number of students getting the same marks is 6.
d) To find the average marks obtained by the students in the class, we sum up all the marks and divide by the total number of students.
Total marks = 44 + 50 + 44 + 49 + 42 + 47 + 45 + 42 + 44 + 48 + 49 + 48 + 47 + 49 + 47 + 41 + 45 + 48 + 41 + 48 + 41 + 42 + 47 + 49 + 49 + 48 + 50 + 47 + 49 + 48 + 46 + 44 + 45 + 45 + 46 + 44 + 42 + 47 + 48 + 45
= 1912
Total number of students = 40
Average marks = Total marks / Total number of students
= 1912 / 40
= 47.8
Therefore, the average marks obtained by the students in the class is 47.8.
e) To find the number of students getting more than the average marks, we count the students whose marks are greater than 47.8.
In the given list, the students with marks greater than 47.8 are: 50, 50, 49, 48, 49, 48, 49, 48, 50, 49, 49, 48, 48, 50, 49, 49, 48, 48, 47, 49, 49, 48, 50, 47,
49, 49, 48, 50, 47, 49, 49, 48, 48, 49, 48, 47, 48, 49, 49, 48, 50, 49.
Counting these numbers, we find that there are 40 students who obtained more than the average marks.
1. Solve the inequality, and then choose the correct graph for the solution?
2. Describe the graph (on a number line) of the solution to the following inequality?
picture is attached
Answer:
B). Graph B ;
Step-by-step explanation:
22).
3p + (16 - p) > 28
2p > 12
p > 6 (B)
23).
- 3x + 1 ≥ - 11
- 3x ≥ - 12
x ≤ 4
19. The formula P = a + b + cgives the perimeter P of a triangle with side
lengths a, b, and c. A triangular field has sides that measure 33 yards,
56 yards, and 65 yards. What is the perimeter of the field? (6.EE.20)
Answer:
33 + 56 + 65 = 154
Which of the following logarithmic equations is equivalent to the exponential
equation below?
e^x = 15.29
Answer:
Step-by-step explanation:
Natural log and the number 'e' are inverse to each other. Therefore, if you take the natural log of both sides, the exponential cancels and leaves 'x' isolated:
\(ln(e^x)=ln(15.29)\)
\(x=ln(15.29)\)
Let's solve for x
e^x=15.29So natural logarithm on both sides
\(\\ \rm\Rrightarrow x=ln(15.29)\)
\(\\ \rm\Rrightarrow x=2.73\)
URGENT!! NEED HELP!! SOLVE FOR THE COS(
Answer:
Cos z is 28/35
Step-by-step explanation:
Write the fraction as a mixed number 10/20
Can you help me please asap
The general solution to the given differential equation is:
y = (x/12) - (1/288)
How to solve the Differential Equation?
We want to solve the differential equation given as: y' - 24xy = -2x
The integrating factor is given by the exponential of the integral of the coefficient of y, which in this case is -24x. Therefore, the integrating factor is e^(-24x).
Multiplying the entire equation by the integrating factor, we get:
e^(-24x)y' - 24xe^(-24x)y = -2xe^(-24x)
The left side of the equation is the derivative of (e^(-24x)y) with respect to x:
(d/dx)(e^(-24x)y) = -2xe^(-24x)
Integrating both sides with respect to x, we have:
e^(-24x)y = ∫(-2xe^(-24x))dx
Integrating the right side, we get:
e^(-24x)y = -∫(2xe^(-24x))dx
To evaluate the integral on the right side, we can use integration by parts. Let's differentiate -2x and integrate e^(-24x):
u = -2x (differential of u = -2dx)
dv = e^(-24x) (integral of dv = -1/24e^(-24x)dx)
Using the integration by parts formula:
∫uv dx = uv - ∫v du
We can compute the integral as follows:
-∫(2xe^(-24x))dx = -[(-2x)(-1/24e^(-24x)) - ∫(-1/24e^(-24x))(-2dx)]
= -[x/12e^(-24x) + 1/12∫e^(-24x)dx]
= -[x/12e^(-24x) + 1/12(-1/24)e^(-24x)]
= -[x/12e^(-24x) - 1/(12*24)e^(-24x)]
= -[x/12e^(-24x) - 1/(288e^(-24x))]
= -[x/12 - 1/288]e^(-24x)
Substituting this back into the previous equation, we have:
e^(-24x)y = -[-(x/12 - 1/288)e^(-24x)]
Simplifying further:
e^(-24x)y = (x/12 - 1/288)e^(-24x)
Canceling out e^(-24x) on both sides:
y = x/12 - 1/288
Therefore, the general solution to the given differential equation is:
y = x/12 - 1/288
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Help please I really need help