Answer:
Every value of x.
Step-by-step explanation:
The function is a zero-order polynomial, whose value remains constant for all value of x.
What’s the volume of this triangular prism ?
Answer: 157.5
Step-by-step explanation: To get the volume of an object you must multiply the width x height ÷ it by 2 x length
Therefore 7 x 5 = 35 ÷ 2 = 17.5
17.5 x 9 = 157.5
Answer:
157.5
Step-by-step explanation:
The first step is to find the area of the triangular base. The formula for the area of a triangle is bh/2, or in this case 5×7/2=17.5. Multiplying this by the length of the prism, you get 9×17.5=157.5. Hope this helps!
Please helppp can someone please help me I am so confused on how to answer these
Answer:
A; D; A; C; C
Step-by-step explanation:
1. S29 means the sum of the first 29 terms. Because it's an arithmetic sequence, the sum of the first x terms is (the first term + xth term)(x)/2
That means the answer to the first question is (7+70)(29)/2 = 1116.5 (A)
2. The sum of the first 18 terms is (56 + 5)(18)/2 = 549 (D)
3. The common difference is 3.5, making the 26th term 87.5. That makes the sum of the first 26 terms (7+94.5)(26)/2 = 1319.5 (A)
4. The question is asking for the sum of the first 28 terms. The first term is 50-4(1) = 46. The 28th term is 50-4(28) = -62. That makes the sum of the first 28 terms (46+(-62))(28)/2 = -224 (C)
5. The first x terms of a geometric sequence is the (first term - (x+1)th term)/(1-(ratio)).
That makes the sum ((1/3)-(729))/(1-3) = -(2186/3)/-2 = 1093/3 = 364 1/3 (C)
Brooklyn needs to earn $14 more dollars to have $32. How much money does Brooklyn have now?
Identify the steps needed to write and solve an equation to solve the word problem. Select all that apply.
The variable, m, is equal to the amount of money Brooklyn has now.
The variable, m, is equal to the amount of money Brooklyn needs to earn.
The correct equation is 14 + m = 32.
The correct equation is 14m = 32.
To solve the equation, subtract 14 from both sides.
To solve the equation, divide 14 on both sides.
Answer:
its A,C,E
Step-by-step
i got it right on edge
Brooklyn has $18 now.
The correct steps are given below.
What is an equation?Two algebraic expressions having same value and symbol '=' in between are called an equation.
Given:
Brooklyn needs to earn $14 more dollars to have $32.
Let m be variable, which is equal to the amount of money Brooklyn has now.
The equation is,
14 + m = 32.
To solve the equation:
Subtract 14 from both sides.
We get,
m = 18
Therefore, the value of m is 18.
To learn more about the equation;
https://brainly.com/question/12788590
#SPJ6
Raj polled 100 students in his class to compare the number of hours that teen boys and girls played video games each week. The results of his survey are shown below. Which gender shows greater variability in their playing time?
Hours of Video Game Time per Week for Teen Boys
A box-and-whisker plot. The number line goes from 0 to 28. The whiskers range from 0 to 28, and the box ranges from 9 to 17. A line divides the box at 14.5.
Hours of Video Game Time per Week for Teen Girls
A box-and-whisker plot. The number line goes from 0 to 28. The whiskers range from 0 to 28, and the box ranges from 3 to 15. A line divides the box at 6.
Boys show greater variability because the 3rd quartile for boys is 17 but only 15 for girls.
Boys show greater variability because the median playing time for boys is 14.5 but only 6 for girls.
Girls show greater variability because the interquartile range for girls is 12 for girls but only 8 for boys.
Girls show greater variability because the data for the girls is skewed toward the lower end of the box plot.
The gender that shows greater variability in their playing time is females (teen girls).
How can we measure variability in a box-plot?It may depend on conditions. The dispersion can be measured in many ways. We can find range (max value - min. value), or interquartile range(the absolute difference between the first and third quartile ), etc to measure the variability.
How does a boxplot shows the data points?A box plot has 5 data description.
The leftmost whisker shows the minimum value in the data.The rightmost whisker shows the maximum value in the data.The leftmost line in the box shows the first quartile.The middle line shows the median, also called second quartile.The last line of the box shows the third quartile.How to find the interquartile range?IQR(inter quartile range) is the dfference between third and first quartile.
We will use the interquartile range here to find the variability in the playing time taken by different genders.
From the box plots given, we get the data of first and third quartiles from the left and right limits of boxes.
For males (teen boys):
First quartile: left limit of box = 9Third quartile: right limit of box = 17IQR is 17-9 = 8
For females (teen girls):
First quartile: left limit of box = 3Third quartile: right limit of box =15IQR is 15-3 = 12
Thus, there is greater variability in playing time of teen girls (females).
Thus, the gender that shows greater variability in their playing time is females (teen girls).
Learn more about box-plot here:
https://brainly.com/question/1523909
Girls have a larger interquartile range (IQR), indicating more varied playing times compared to boys.
Let's break down the analysis in detail:
1. Interpretation of Box-and-Whisker Plots:
- Box-and-whisker plots provide a visual representation of the distribution of a dataset. They show the median, quartiles, and range of the data.
2. Understanding Interquartile Range (IQR):
- The interquartile range (IQR) is a measure of statistical dispersion, which is calculated as the difference between the upper quartile (Q3) and the lower quartile (Q1). It represents the spread of the middle 50% of the data.
- A larger IQR indicates greater variability in the dataset.
3. Comparison of IQRs for Boys and Girls:
- For boys:
- Lower quartile (Q1) = 9
- Upper quartile (Q3) = 17
- IQR for boys = Q3 - Q1 = 17 - 9 = 8
- This means that the middle 50% of boys' playing time falls within the range of 8 hours.
- For girls:
- Lower quartile (Q1) = 3
- Upper quartile (Q3) = 15
- IQR for girls = Q3 - Q1 = 15 - 3 = 12
- This indicates that the middle 50% of girls' playing time spans a range of 12 hours.
4. Analysis and Conclusion:
- The interquartile range for girls (12 hours) is larger than that for boys (8 hours).
- Therefore, girls' playing time exhibits greater variability compared to boys'.
- This suggests that there is more diversity in the amount of time girls spend playing video games each week, as indicated by the wider spread of their data points around the median.
5. Reasoning Behind the Conclusion:
- While both groups have the same overall range of possible values (from 0 to 28 hours), the spread of data within the middle 50% (as captured by the IQR) is wider for girls, indicating greater variability in their playing time.
So, based on the analysis of the interquartile ranges, we conclude that girls show greater variability in their playing time compared to boys in this dataset.
Estimate the result by rounding the numbers to the second decimal before performing the operation. Then also round your answer to the second decimal. 8123÷0.211 How do you do it?
Answer:
40615
Step-by-step explanation:
Note, rounding off decimals involves observing if the said decimal is up to the value of 5. If it is, then it can be rounded up, if not, its rounded off.
Since we need to round the numbers to the second decimal before performing the operation, we will have, 8123÷0.2
Note, 8123 has no decimal so we ignore
But 0.211 has a second decimal which is the first 1 so because it's not up to 5, we round it off to 0.
Hence we have 8123 ÷ 0.2= 40615.0
Since our answer has no decimal, we leave it like that.
Answer:
38680.95
Step-by-step explanation:
Solution:-
- We will round the denominator of the fraction " 0.211 " to two decimal places.
0 . 2 1 1
1st 2nd 3rd
3rd digit = 1 < 5 ... "Truncate the 3rd decimal value and on wards"
ans: 0.21
- Now perform the division:
8123 / 0.21 = 38680.95238
- Now again round the resulting answer to 2nd decimal place:
38680. 9 5 2
1st 2nd 3rd
3rd digit = 2 < 5 ... "Truncate the 3rd decimal value and on wards"
- The resulting answer will be after rounding to 2nd decimal place:
Answer: 38680.95
A rectangle is enlarged by a factor of 1.5. The width is given as w=2 and the length is given as l =7 in. What would be the perimeter of the new rectangle?
Answer:
Hence Perimeter for new rectangle will be 27 units .
Step-by-step explanation:
Given:
A rectangle with enlarged factor of 1.5
L=7 and W=2
To Find:
Perimeter for new rectangle
Solution:
First calculate the new dimensions for new rectangle ,
Given that original length and width as 7 and 2 respectively and it is increasing by 1.5 times of the original ones
So
New length =1.5 *L
=1.5 *7
=10.5 units
And for width,
New width=1.5 *W
=1.5 *2
=3
Hence New dimensions are 10.5 and 3 units .
So perimeter of new rectangle =2(New length + New breadth)
=2(10.5+3)
=2(13.5)
=27 units
Jamal has a pair of shoes that have a total mass of 960 grams and four identical books that have a total mass of 2 kilograms. Which has the greater mass : one shoe or one book use the drop down Menus to explain
One shoe has a mass of 950 divided _____ = _____ grams . One book has a mass of _____ divided 4 = _____ grams . So one _____ has a greater mass
Answer: One book has a greater mass.
Step-by-step explanation:
Jamal has a pair of shoes with a total mass of 960 grams. This means that each shoe has a mass of:
960 grams ÷ 2= 480 grams per shoe.
Jamal also has four identical books with a total mass of 2 kilograms. Note that 1000 grams make a kilograms. Therefore 2 kilograms will be (2 × 1000 grams) = 2000 grams.
Each book will have a mass of:
2000 ÷ 4 = 500 grams per book.
One shoe has a mass of 960 divided 2 = 480 grams . One book has a mass of 2000 divided 4 = 500 grams . So one book has a greater mass.
95 students at a college were asked whether they had completed their required English 101 course, and 72 students said "yes". Find the best point estimate for the proportion of students at the college who have completed their required English 101 course. Round to four decimal places.
0.7579 is the best point for the proportion of students at the college who have completed their required English 101 course.
Step-by-step explanation:
"The proportion is written in the fraction form as required number in the numerator and the total number in the denominator."
Here, the 95 students at a college were asked whether they had completed their required English 101 course.
So, the total students = 95
It is given that, 72 students said "yes".
So, the number of completed students = 72
To estimate the best point for the proportion of students who completed their English 101 course :
Now, the numerator is the no.of students who have completed their required English 101 course.
Proportion = 72 / 95
⇒ the best point is calculated as 72 divided by 95
⇒ 0.7579 (round to four decimal places).
The angular velocity of a fan blade is 4.6 radians per second.
Approximately how many revolutions does the fan blade make in 2.4 minutes?
State your answer, rounded to the nearest tenth of a revolution.
Answer:
In 2.4 minutes the fan made 105.5 revolutions.
Step-by-step explanation:
In order to solve this problem we need to convert the speed from radians to revolutions. To do that we can use a rule of three as shown below:
2pi rad/s -> 1 rev/s
4.6 rad/s -> x rev/s
2pi/4.6 = 1/x
2pix = 4.6
x = 4.6/2pi = 2.3/pi rev/s
Now we need to conver the time at which the blade was spinning from minutes to seconds, to do that we need to multiply by 60.
t = 2.4*60 = 144 s
To calculate the number of revolutions we multiply the angular velocity of the fan by the time it was spinning:
rev = (2.3/pi)*144 = 331.2/pi = 105.5 revolutions
Answer:
105.4 revolutions
Step-by-step explanation:
By converting 2.4 min into seconds, we'll have
2.4 minutes = 60 x 2.4 = 144 seconds.
Now, in 2.4 minutes, the fan rotate 4.6 [rad/s] x 144s = 662.4 radians
As the answer is required in revolution
therefore, 1 radian = 0.159155 revolutions
so 0.159155 x 662.4 = 105.4 revolutions
The fan rotated 105.4 revolutions in 2.4 minutes
Ummm help please please
Answer:
120
Step-by-step explanation:
A potter forms a piece of clay into a cylinder. As he rolls it, the length, L, of the cylinder increases and the radius, r, decreases. If the length of the cylinder is increasing by 0.7 cm per second, find the rate at which the radius is changing when the radius is 2 cm and the length is 9 cm.
Answer:
The radius is decreatsing at a rate 0.78 cm per second.
Step-by-step explanation:
We are given the following in the question:
[tex]\dfrac{dl}{dt} = 0.7\text{ cm per second}[/tex]
Instant radius,r = 2 cm
Instant length,l = 9cm
The radius of the cylinder decreases.
Volume of cylinder =
[tex]V =\pi r^2l[/tex]
Since the volume of the cylinder does not changes, we can write:
[tex]\dfrac{dV}{dt}=0[/tex]
Rate of change of volume:
[tex]\dfrac{dV}{dt} = \pi(2r\dfrac{dr}{dt}l + r^2\dfrac{dl}{dt})[/tex]
Puttiung values, we get
[tex]0 = \pi(2(2)\dfrac{dr}{dt}(9) + (2)^2(0.7))\\\\\dfrac{dr}{dt}=-\dfrac{4\times 0.7}{4\times 9} \approx -0.78[/tex]
Thus, the radius is decreatsing at a rate 0.78 cm per second.
Using differentiation, it is found that the radius is increasing at a rate of 0.35 cm/second.
The length of a cylinder is the diameter, which is double the radius, hence:
[tex]l = 2r \rightarrow r = \frac{l}{2}[/tex]
Applying differentiation, the rate of change of the radius is given by:
[tex]\frac{dr}{dt} = \frac{1}{2}\frac{dl}{dt}[/tex]
We are given that the rate of change of the length is [tex]\frac{dl}{dt} = 0.7[/tex], hence:
[tex]\frac{dr}{dt} = \frac{1}{2}\frac{dl}{dt} = \frac{1}{2}(0.7) = 0.35[/tex]
The radius is increasing at a rate of 0.35 cm/second.
A similar problem is given at https://brainly.com/question/9543179
(1 point) The revenue, in dollars, from selling x items is R(x)=400x−x2, and the total cost, in dollars, is C(x)=50+9x. Write a function that gives the total profit earned, and find the quantity which maximizes the profit.
Answer:r=400 because the x is 72(6)
Step-by-step explanation:
An urn contains 8 balls identical in every aspect except color. There is 1 red ball, 2 green balls, and 5 blue balls. You draw two balls from the urn, and you do not replace the first ball before drawing the second. Find the probability that the first ball is blue and the second is green.
Answer:
P(blue and green) = P(blue)*P(green) = (5/8)(2/8) = 10/64
The probability that the first ball is blue and the second is green, with no replacement, is approximately 0.179 or 17.9%.
Explanation:The subject of this question pertains to probability, specifically the concept of dependent events in the realm of combinatorics. The problem involves an urn with 8 balls of different colors. The question asks us to find the probability that a blue ball is drawn first and a green ball second, with no replacement.
Firstly, we calculate the individual probabilities. The probability of drawing a blue ball first is 5/8, because there are 5 blue balls out of a total of 8. Since the blue ball isn't replaced, there are now 7 balls left in the urn, and therefore, the probability of drawing a green ball next is 2/7. To find the combined probability, we multiply the individual probabilities: (5/8) * (2/7) = 10/56 = 0.1786 (rounded). So the probability that the first ball is blue and the second is green is approximately 0.179 or 17.9%.
Learn more about Probability here:https://brainly.com/question/22962752
#SPJ3
Estimate the square root to the nearest (a) integer and (b) tenth. Square root of 685
Final answer:
The square root of 685 lies between 26 and 27. To the nearest integer, the estimate is 26, and to the nearest tenth, the estimate is 26.2, given that it is roughly 9/53 of the way from 26 to 27.
Explanation:
To estimate the square root of 685 to the nearest integer and tenth, we have to determine which two perfect squares it lies between. The perfect square closer to 685 without going over is 676 (√676 is 26), and the next perfect square is 729 (√729 is 27). Thus, the square root of 685 lies between 26 and 27.
To estimate to the nearest integer, we would round √685 to 26, as it's closer to 676. For the nearest tenth, we need to see how much 685 exceeds 676. It exceeds by 9, and since 729-676 is 53, 685 is roughly 9/53 of the way from 26 to 27. So, a quick estimation for √685 to the nearest tenth could be 26 + (9/53)*1 which is approximately 26.2. Therefore, the estimated value of the surd √685 to the nearest tenth would be 26.2.
Analyzing an Oblique Prism
The base area of an oblique pentagonal prism is 15 sq. in. The prism measures 3 inches in height and the edges connecting the bases measure 5 inches each. Which statements about the prism are true? Check all that apply.
The volume of the prism is computed using the expression (15)(3).
The volume cannot be determined because the dimensions of the base are unknown.
The edge length can be used in place of the height of an oblique prism if the height is unknown.
The unit on the volume measure of the prism is cubic inches.
The edge length times the height is the area of the base in any prism.
Answer: A and D
I just worked on this!
Answer:
1 and 4... A and D
Step-by-step explanation:
Let X be an exponential random variable with parameter Λ, which is itself a random variable with distribution Exponential(β). Find a formula for the conditional density of Λ given X = x, and identify its type (i.e. its name and parameter(s)).
Answer:
Step-by-step explanation: solution solved below
Final answer:
To find the conditional density of Λ given X = x, calculate the joint density function of X and Λ and apply the formula for conditional density.
Explanation:
The conditional density of Λ given X = x when Λ is a random variable with distribution Exponential(β) can be found as follows:
Calculate the joint density function of X and Λ.
Use the formula for conditional density: f(Λ|X=x) = f(X,Λ) / f(X=x).
Identify the type of the conditional density based on the distribution it follows.
Which statement is true about the data point 84? It is within 1 standard deviation of the mean. It is within 2 standard deviations of the mean. It is exactly 3 standard deviations from the mean. It is exactly 4 standard deviations from the mean.
Answer: It is within 2 standard deviations of the mean
Step-by-step explanation:
What is the volume of wax needed for the candle in the shape of a prism?
Answer:
Step-by-step explanation:
You need answer choices for someone to answer.
Which mark on the tape measure is closest to 2.23607 inches?
Answer:
5.7 cm or 2 1/4 in
Step-by-step explanation:
Your tape measure is not shown.
On my tape measure, 5.7 cm is the closest mark. On the inch scale, 2 1/4 inches is the next-closest mark.
_____
On a tape measure graduated in 1/32 inch between 2 and 3 inches, you can find the closest mark by rounding to the nearest 32nd:
2.23607 × 32 ≈ 71.55 ≈ 72 --- 32nds of an inch
72/32 = 2 1/4 . . . . the closest mark on an inch ruler graduated in 32nds
__
For a ruler graduated in millimeters, you can find the closest millimeter in the same way. There are 25.4 mm to the inch.
2.23607 in × 25.4 mm/in ≈ 56.80 mm ≈ 57 mm
57 mm = 5.7 cm . . . closest mark on metric scale
__
When we check the error, we find the metric mark is closer than the inch mark.
5.7 cm ≈ 2.24409 in . . . . error of 0.00802 in
2 1/2 in = 2.25000 in . . . error of 0.01393 in
Final answer:
The mark on the tape measure closest to 2.23607 inches is just above 2 3/16 inches, which can be more precisely measured with a tape measure that features millimeter or half-millimeter markings.
Explanation:
The student has asked which mark on the tape measure is closest to 2.23607 inches. To answer this question, we must consider the precision of the measuring device. When using a ruler without millimeter markings, such as the bottom ruler mentioned, the measurement can be understood in tenths of a centimeter. This would make it difficult to conclusively measure and report on the hundredths digit for a length.
Conversely, using a tape measure with millimeter or even half-millimeter markings (akin to the top ruler), the user can measure more precisely. Given that 1 inch equals 2.54 centimeters, 2.23607 inches would be approximately 5.679818 centimeters. This would be between the 2.5 cm and 2.6 cm marks on a metric tape measure or between 2 3/16 inches and 2 1/4 inches on an imperial tape measure; 2.23607 inches is very close to, but slightly above, 2 3/16 inches, so this would be the mark on an imperial tape measure that is closest to 2.23607 inches.
What is the median of the data set 87,98,106,82,111,120
Answer:
Median = 102
Step-by-step explanation:
To find the median we will following the steps below;
study the numbers, if they are not arrange from ascending to descending order, you try to do that.
87,98,106,82,111,120
82, 87, 98,106, 111, 120
Pick the middle number, if there is just one number that falls in the middle, that number is your median, but if there two numbers that falls in the middle, you add the two numbers and then divide by 2.
In this case, two numbers falls in the middle, so we will add and divide by 2
That is;
Median = 98 + 106 /2
=204 /2
=102
Median = 102
Which equation is the correct translation of the following statement?
Four less than a number is nine.
4 - x = 9
9 - 4 = x
9 - x = 4
x - 4 = 9
Answer: x - 4 = 9 (x will equal 13)
What I did was since 4 is less than 13 we could use 13-4 since 4 is less than 13.
13-4 will get u 9 so that x will equal 13
13-4=9
Answer:
Answer: x - 4 = 9
Step-by-step explanation:
Henry want to know how long his patio is . He said the perimeter of his patio is 48 feet . He knows that one side of his patio is 9 feet long . How many feet long are all the sides
Answer:
Step-by-step explanation:
Perimeter = 48 feet
2*(length + width) = 48
2*(9 + width ) = 48
Divide both sides by 2.
9 + width = 48/2
9+width = 24
Subtract 9 from both sides.
9+width - 9 = 24 - 9
Width = 15 feet
Two cars leave towns 450 kilometers apart at the same time and travel toward each other. One car's rate is 12 kilometers per hour less than the other's. If they meet in 3 hours, what is the rate of the slower car?
Answer:
The rate of the slower car is 69km/hr
Step-by-step explanation:
Please kindly check the attached files for explanation.
Allie is waiting to be tall enough to ride the thunder dragon roller coaster. You have to be at least60 inches to ride. Write this situation as an inequality
Answer:
[tex]x\geq 60[/tex] where x denotes height of Allie
Step-by-step explanation:
An inequality compares two values. One value is less than, greater than, or not equal to another value.
Given: Allie is waiting to be tall enough to ride the thunder dragon roller coaster. You have to be at least 60 inches to ride.
To write: an equality
Solution:
Let the height of Allie be x inches.
As a person has to be at least 60 inches to ride,
the inequality can be [tex]x\geq 60[/tex]
The circumference of a circle is 6π centimeters.What is the radius?
Answer:
37.699cm
Step-by-step explanation:
thank me and rate!!! plz thank you :)
plz, help I don't know what I'm doing wrong. In the diagram, RSTU, and ABCD. Find the ratio of their perimeters.
Answer:
3 : 2
Step-by-step explanation:
Note that the ratio of perimeters is equal to the ratio of the sides, thus
ratio of corresponding sides = 12 : 8 = 3 : 2
Thus the ratio of perimeters is 3 : 2
The ratio of their perimeters is 3 : 2
calculation of ratio:Since the ratio of perimeters is equivalent to the ratio of the sides,
So,
ratio of corresponding sides = 12 : 8 = 3 : 2
Thus the ratio of perimeters is 3 : 2
Learn more about the ratio here: https://brainly.com/question/13176103?referrer=searchResults
QUICK FIRST GETS BRAINLIEST!!!!! Use the interactive spinner to model who among Elisondra and her three friends will order first.
Then answer the questions:
What is the theoretical probability of the spinner landing on Elisondra’s section?
Spin the spinner.
Who orders first?
Answer: The chance of Elisondra getting picked is 25%
Step-by-step explanation:
Now you spin the spinner and whoever it lands on is the one who orders first.
Good Luck!
Answer:
It depends if Elisondra and her friend's share of the wheel is the same but if it is the same, then it is a 1/4 chance because there are 4 people.
Fill in the blank...
Answer:
Positive
Step-by-step explanation:
If a is positive, the parabola opens up or to the right. If it's negative it does the opposite.
Seo-Yun hosted a party. She had 50 party
favors to give away, and she gave 3 party
favors to each of her guests as they arrived at
the party.
Let g(n) be the number of party favors Seo-
Yun had before the nth guest arrived.
g is a sequence. What kind of sequence is it?
Answer: It’s an arithmetic sequence
g(n)=50-3•(n-1)
Step-by-step explanation:
Answer:
it’s a arithmetic sequence and answer is 50-3(n-1) please give brainliest anyway bye have a good day but I don’t think u are because u probably bored of khan academy anyway bye have a good day! :D
Step-by-step explanation:
Which is not a property of countercurrent multiplication?
Answer:
It is opposed by the vasa recta.
Step-by-step explanation:
Question:
Which of these is not a property of the renal counter-current multiplier?
It is opposed by the vasa recta.
It exploits the structure of the nephron loop.
It depends on active ion transport to function.
It creates a hyperosmotic interstitial fluid in the kidney medulla.
Answer:
The correct option is;
It is opposed by the vasa recta
Step-by-step explanation:
Counter current multiplication is the process whereby energy is used to build osmotic pressure gradient in the kidney such that water is reabsorbed from the exit tubular fluids reducing the volume of produced urine by increasing the urine concentration while the vasa recta capillaries slows blood flow rate so as to keep the osmotic pressure gradient constant enabling water to be reabsorbed thus concentrating the urine in line with counter current multiplication.