6 Σ n=1 n/2n + 1
Ignore the selected answer, I accidentally clicked, please help
Answer:
Answer is the second circle will explain later but the second circle the middle one
[tex]\begin{array}{l}\sum _{n=1}^{6}\frac{n}{2n+1} =\frac{1}{2\cdotp 1+1} +\frac{2}{2\cdotp 2+1} +\frac{3}{2\cdotp 3+1} +\frac{4}{2\cdotp 4+1} +\frac{5}{2\cdotp 5+1} +\frac{6}{2\cdotp 6+1}\\\\\sum _{n=1}^{6}\frac{n}{2n+1} =\frac{1}{3} +\frac{2}{5} +\frac{3}{7} +\frac{4}{9} +\frac{5}{11} +\frac{6}{13}\end{array}[/tex]
x=15 is this a function how do you do it
9514 1404 393
Answer:
no
Step-by-step explanation:
The graph of this equation on an x-y plane is a vertical line. The input value x=15 maps to an infinite number of outputs (y-values). For a relation to be a function, each input can only map to one output.
x = 15 is not a function
The tangent of the curve f(t) =2+nt+mt^2 at point (1,1/2) is parallel to the normal g(t)= t^2+6t+13(-2,2), calculate the values m and n.
Step-by-step explanation:
The slope of g(t) as (-2,2) is given by
[tex]g'(t)=2t+6[/tex]
[tex]g'(-2)=2(-2)+6=2[/tex]
Since the normal is parallel to the tangent of f(t) at (1, 1/2),
The tangent line of f(t) has a slope of
[tex]\dfrac{d}{dx}f(t)=n+2mt=2[/tex]
At point (1, 1/2), we know
[tex]f'(1)=n+2m=2[/tex]
[tex]f(1)=2+n(1)+m(1)^2=2+n+m=\frac12[/tex]
Solving,
[tex]n=5, m=-\frac72[/tex]
The diagram below shows a sketch of part of the graph y = ax+ bx + 3.
The two points V and W each lie on the graph and have co-ordinates (-1,10) and (2.13).
W
(2,13)
V
(-1,10)
Diagram is
NOT to scale
Find the values of the numbers a and b.
Answer:
Step-by-step explanation:
There appears to be a problem with your equation as it can be reduced to
y = (a + b)x + 3
which is a line of slope (a + b) and y intercept of 3
plugging in our points
10 = -1(a + b) + 3
7 = -1(a + b)
a + b = -7
13 = 2(a + b) + 3
10 = 2(a + b)
a + b = 5
a + b cannot equal both 5 and -7 at the same time.
I will GUESS that you mean y = ax² + bx + 3
10 = a(-1)² + b(-1) + 3
10 = a - b + 3.
b = a - 7
13 = a(2)² + b(2) + 3
13 = 4a + 2b + 3
10 = 4a + 2b
10 = 4a + 2(a - 7)
10 = 4a + 2a - 14
24 = 6a
a = 4
b = 4 - 7
b = -3
Kim worked these hours last week: Monday 8, Tuesday 7.5, Wednesday 6.5, Thursday 3, and Friday 9 hours. She is paid $20.25 per hour. (a) How many hours did Kim work last week? (b) What was her gross pay for the week?
Hours (a) Gross Pay ()
-5/12+5/8 what is the answer to this
Answer:
5/24
Step-by-step explanation:
-5/12+5/8
-10/24+15/24
5/24
Monico invests $9,000 at 2% simple interest for 1 year. How much is in the account at the end of the 1 year period ?
Answer:
9180
Step-by-step explanation:
9000*1.02
Answer:
There will be $8820 in Monico's account at the end of the one year period.
Step-by-step explanation:
9000*0.02 = 180
9000 - 180 = 8820
Have a nice day! :-)
The quotient of a number and six is twelve. Find the number.
Answer:
72
Step-by-step explanation:
let the number be n then the quotient of the number and 6 is [tex]\frac{n}{6}[/tex] , then
[tex]\frac{n}{6}[/tex] = 12 ( multiply both sides by 12 )
n = 12 × 6 = 72
The number is 72
Answer:
72
Step-by-step explanation:
n/6=12
72/6=12/1
12/1=12
You have been working with irregular figures. How is estimating area on a grid different from estimating perimeter on a grid? Explain.
Answer:
When estimating area, count the squares that cover the shape. When estimating perimeter, count the unit lengths that are around the shape
Step-by-step explanation:
What is 100x 2 plus 4 divided by 5 equal to?
please help me, if you help then thank you
Answer:
He should have subtracted the exponents
Step-by-step explanation:
A kindergarten class has a student-teacher ratio of 15 to 2. Is it possible to have 35 students
in the class? Explain your reason in words.
Answer:
No it is not possible, cuz 35 students would need 4.6 teachers, it is not a whole number
Step-by-step explanation:
STUDENT : TEACHER
15 : 2
35 : 4.66
So according to the ratio, if we had 35 students, we would need 4.66 Teachers, but that is not possible, cuz i mean, u obviously can't cut the human into pieces and call that 0.66
A 36-inch pipe is cut into two pieces. One piece is two times the length of the other. Find the length of the shorter piece.
Answer:
24
Step-by-step explanation:
the two times the cut into one
Find the area and the circumference of a circle with diameter 9 ft.
Answer:
area=63.585 circumference=28.26
Step-by-step explanation:
Grayson placed an order for 1/2 of a sack of brown lentils and 1/12 of a sack of green lentils. How much more brown lentils did Grayson order? Write your answer as a fraction or as a whole or mixed number.
A bag is filled with green and blue marbles. There are 41 marbles in the bag. If there are 15 more green marbles than blue marbles, find the number of green marbles and the number of blue marbles in the bag.
Find the solution by setting up an equation. You have two choices for how you will pick your variable. For each of the following variable choices, write an equation (just set up the equation, do not solve it yet) that describes the relationship between the number of green marbles, the number of blue marbles, and the total number of marbles in the bag:
there will be 26 blue marbles
Step-by-step explanation:
41-15=26
True or false?
Two samples are selected from a population, and a treatment is administered to the samples. If both samples have the same mean and the same variance, you are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.
True, two samples are selected from a population, and a treatment is administered to the samples. If both samples have the same mean and the same variance, you are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.
What is the mean?The average of a group of variables is referred to as the mean in mathematics and statistics. There are several methods for calculating the mean, including simple arithmetic means (adding the numbers together and dividing the result by the number of observations), geometric means, and harmonic means.
Given:
Two samples are selected from a population, and a treatment is administered to the samples.
If both samples have the same mean and the same variance.
That means, they have the same t statistic.
A t-test compares the average values of two data sets and determines if they came from the same population.
You are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.
Because the value of t-test are same.
Therefore, the statement is true.
To learn more about the mean;
brainly.com/question/13451489
#SPJ5
I need help with this, thanks
Answer: -2x
Step-by-step explanation:
i'm pretty sure that's right ;)
8,595 ÷ 24?
334 R 3
334 R 7
358 R 3
358 R 7
Answer:
358 R 3
Step-by-step explanation:
if a *b=4a+2ab find the value of
a) 2*5
b)3*4
Answer:
a
Step-by-step explanation:
First identify which number represent the given letters
in the first question a)2 represents a, while 5 represents b.Then substitute 2 for a and 5 for b in the given expression.Do this for the second question.
How tall is the table?
Answer:
what table
Step-by-step explanation:
What is the range of the following function?
Answer:
[tex][-5,5][/tex]
Step-by-step explanation:
The range is the y-axis, and the endpoints are filled in, so we put brackets.
Side note:
This is called Interval Notation. This is very important when you ask for the domain and range of functions (domain is for the x-axis). You will see this system A LOT, so you have to get used to the name and the language Interval notation uses.
Order from least to greatest
√6, -5.25 , 3/2 , 5
Answer: 5.25, 3/2, the square root of 6, 5
Step-by-step explanation:
Make up a data set (n = 10) that has the same minimum value, same median, and same maximum value, but a larger IQR than the boxplot shown.
a. Give your 10 numbers.
b. Give the 5-number summary for your data.
c. Describe your strategy for figuring this out.
The 10 hypothetical numbers which meets the conditions given on the question may include :
1, 2, 3, 5, 6, 6, 7, 10, 10, 12
The five number summary include the maximum, minimum, lower quartile, Median and upper quartile of a distribution.
The five number summary of the hypothetical data are:
Median: 6
Minimum: 1
Maximum: 12
Lower quartile: 2.75
Upper quartile: 10
Comparing the 5 - number summary of the hypothetical data with that of the given boxplot.
From the given boxplot shown :
Minimum value = 1
Maximum value = 12
Median = 6
LOWER QUARTILE, Q1 = 4
UPPER QUARTILE, Q3 = 8
IQR = (Q3 - Q1) = 8 - 4 = 4
THE 10 made up numbers :
1, 2, 3, 5, 6, 6, 7, 10, 10, 12
The five number summary for the made up data :
Median = 1/2(n+1)th term = 5.5th term = (6+6)/2 = 6
Minimum: 1
Maximum: 12
First quartile = 1/4(n+1)th = 2.75th term = (2+3)/2 = 2.5
Third quartile: 3/4(n+1)th term = 8.25 = (10+10)/2 = 10
Interquartile Range: (10 - 2.5) = 7.5
The original data values and hypothetical data have the same minimum and maximum and median values. The hypothetical data has an higher IQR value than the original data.Learn more : https://brainly.com/question/12992903?referrer=searchResults
I need help with 12 13 and 14
Answer: Lines [tex]\frac{}{BC}[/tex] and [tex]\frac{}{EF}[/tex] are different lengths.
Step-by-step explanation:
The distance formula is [tex]\sqrt{(x_1-x_2) ^{2}+(y_1-y_2) ^{2} }[/tex], and you can use this formula to solve for the lengths of both lines [tex]\frac{}{BC}[/tex] and [tex]\frac{}{EF}[/tex].
For line [tex]\frac{}{BC}[/tex], let [tex]x_{1}[/tex] = the x at point B, or 1, and let [tex]x_{2}[/tex] = the x at point C, or 2.
Now, let [tex]y_{1}[/tex] = the y at point B, or 4, and let [tex]y_{2}[/tex] = the y at point C, or -1.
Now, solve the formula to find the length [tex]\frac{}{BC}[/tex] = [tex]\sqrt{(x_1-x_2) ^{2}+(y_1-y_2) ^{2} }\\[/tex].
[tex]\frac{}{BC}[/tex] = [tex]\sqrt{(1-2)^{2} +(4-(-1))^2[/tex]
[tex]\frac{}{BC}[/tex] = [tex]\sqrt{(-1)^{2} +(4+1)^2[/tex]
[tex]\frac{}{BC}[/tex] = [tex]\sqrt{1 +5^2[/tex]
[tex]\frac{}{BC}[/tex] = [tex]\sqrt{(1+25)[/tex]
[tex]\frac{}{BC}[/tex] = [tex]\sqrt{26} \\[/tex]
Now, for line [tex]\frac{}{EF}[/tex], let [tex]x_{1}[/tex] = the x at point E, or -4, and let [tex]x_{2}[/tex] = the x at point F, or -1.
Let [tex]y_{1}[/tex] = the y at point E, or -3, and let [tex]y_{2}[/tex] = the y at point F, or 1.
Now, solve the formula to find the length [tex]\frac{}{EF}[/tex] = [tex]\sqrt{(x_1-x_2) ^{2}+(y_1-y_2) ^{2} }\\[/tex].
[tex]\frac{}{EF}[/tex] = [tex]\sqrt{(-4-(-1))^{2} +(-3-1)^2[/tex]
[tex]\frac{}{EF}[/tex] = [tex]\sqrt{(-4+1)^{2} +(-4)^2[/tex]
[tex]\frac{}{EF}[/tex] = [tex]\sqrt{(-3)^2+16[/tex]
[tex]\frac{}{EF}[/tex] = [tex]\sqrt{(9+16)[/tex]
[tex]\frac{}{EF}[/tex] = [tex]\sqrt{25}[/tex]
[tex]\frac{}{EF}[/tex] = 5
Now, look back at [tex]\frac{}{BC}[/tex]. The two lines have different lengths, so you have now justified the fact that they are not the same.
Questions 13 and 14 would be solved in much the same way- but please let me know if you want me to show the work for those as well!
Can 2 integers be positive?
Answer:
Adding two positive integers gets a positive sum
now when adding two negative integers gets a negative sum.
Step-by-step explanation:
hope that helps>3
Fill in the missing terms for the geometric sequence
What is the common ratio for this geometric sequence?
___, -11, 22, ___, 88, -176
Common ratio:
Step-by-step explanation:
11/2, -11, 22, -44, 88, -176
common ratio : 22/(-11) = -2
concert the following
i) 2 hour into second
ii) 8 km into meter
Step-by-step explanation:
1 hours = 60
1 m = 60 sec
so 2 × 60 × 60 = 7200 sec
1 km = 1000m
8 km= 8000m
Answer:
2 hours into seconds is 7200 seconds.
8 kilometers into meters is 8000 meters.
Step-by-step explanation:
To convert hours into seconds, multiply the number of hours by 3600.
To convert kilometers into meters, multiply the number of kilometers by 1000.
Sorry it may be blurry but can someone help please :D
Answer:
13
Step-by-step explanation:
3x^2-5y
3(4)^2-5(7)
3(16)-35
48-35
13
another riddle no cheating >:(
Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?
