Answers
Answer:
[tex]\mathrm{Decimal:\quad }\:38.8[/tex]
Step-by-step explanation:
[tex]\frac{\left(3-11\right)^2+\left(5-11\right)^2+\left(13-11\right)^2+\left(14-11\right)^2+\left(20-11\right)^2}{5}\\\left(3-11\right)^2+\left(5-11\right)^2+\left(13-11\right)^2+\left(14-11\right)^2+\left(20-11\right)^2=194\\\left(3-11\right)^2+\left(5-11\right)^2+\left(13-11\right)^2+\left(14-11\right)^2+\left(20-11\right)^2\\\left(3-11\right)^2=64\\\left(3-11\right)^2\\\mathrm{Subtract\:the\:numbers:}\:3-11=-8\\=\left(-8\right)^2[/tex]
[tex]\mathrm{Apply\:exponent\:rule}:\quad\left(a\right)^n=a^n,\:\mathrm{if\:}n\mathrm{\:is\:even}\\\left(-8\right)^2=8^2\\8^2=64\\\left(5-11\right)^2=36\\\left(5-11\right)^2\\\mathrm{Subtract\:the\:numbers:}\:5-11=-6\\=\left(-6\right)^2\\\mathrm{Apply\:exponent\:rule}:\quad \left(-a\right)^n=a^n,\:\mathrm{if\:}n\mathrm{\:is\:even}\\\left(-6\right)^2=6^2\\=6^2\\6^2=36\\\left(13-11\right)^2=4\\\left(13-11\right)^2\\\mathrm{Subtract\:the\:numbers:}\:13-11=2\\=2^2\\2^2=4\\\left(14-11\right)^2=9[/tex]
[tex]\mathrm{Subtract\:the\:numbers:}\:14-11=3\\=3^2\\3^2=9\\\left(20-11\right)^2=81\\\left(20-11\right)^2\\\mathrm{Subtract\:the\:numbers:}\:20-11=9\\=9^2\\9^2=8\\=64+36+4+9+81\\\mathrm{Add\:the\:numbers:}\:64+36+4+9+81=194\\=194\\=\frac{194}{5}\\\mathrm{Decimal:\quad }\:38.8[/tex]
Related Questions
What is the answer to this question? Please help!
Answers
Answer:
B
Step-by-step explanation:
[tex]-3\sqrt{2}+3\sqrt{8}= \\\\-3\sqrt{2}+3\sqrt{2\cdot 2^2}= \\\\-3\sqrt{2}+6\sqrt{2}= \\\\3\sqrt{2}[/tex]
Hope this helps!
find the mean of this set of numbers: 19, 19, 9, 11, 13, 20, 19, 10
Answers
Step-by-step explanation:
The mean of this number is 16 because when you do the formula it adds up to 16, so the formula to find the mean of the numbers is: Firstly you order the numbers from smallest to largest, Next you add all the numbers together and divide the answer you get with the amount of the numbers you were talking about in the question.
1. How do you use the distance formula and slope formula to classify a quadrilaterals and triangles
Answers
Answer:
Both Distance formula and Slope formula are used to classify quadrilaterals and triangles, as Distance formula is used to calculate the length of each side while Slope formula is used to find the angle of a line with respect to an axis or another line.
We can classify the figure as finding the lengths of each side by using Distance formula. For example, if we find that a quadrilateral has all 4 sides equal, is it a square. If it has opposite sides equal, it can be a rectangle or a parallelogram, and so on. It can also tell whether a triangle is right angled, isosceles or equilateral.
Slope are used to find angles of the lines. If 2 lines have the same slope, it means they are parallel to each other. If the product of their slopes is -1, it means they are perpendicular to each other
Antonina needs to have worked at least 90 volunteer hours to graduate. She has already volunteered with a housing organization over the summer for 52 hours. Antonina needs to tutor after school for 3 hours per week to complete the remainder of her volunteer hours. If w is the number of weeks that Antonina needs to tutor in order to complete her volunteer hours, which of the following inequalities best models the situation described above?
Answers
Answer:
No. of hours already volunteered + total volunteer hours dedicated in w weeks > = Least volunteer hours required to graduate
=> 52 + 3w >= 90
Step-by-step explanation:
Given that Antonina needs to have worked at least 90 volunteer hours to graduate means that she needs to volunteer either for 90 hours or more than that . Mathematically this can be written as
Total volunteer hours required to graduate greater than or equal to 90
Total volunteer hours required to graduate>= 90
No. of hours already volunteered = 52
no. of hours left for volunteering = Total volunteer hours required to graduate - No. of hours already volunteered = 90 - 52 = 38
No. of hours in one week she can dedicate for volunteering= 3
if w is the number of weeks that Antonina needs to tutor in order to complete her volunteer hours
then total volunteer hours dedicated in w weeks will be = w*No. of hours in one week she can dedicate for volunteering = w*3 = 3w
Thus,
No. of hours already volunteered + total volunteer hours dedicated in w weeks > = Least volunteer hours required to graduate
=> 52 + 3w >= 90
WILL MARK BRAINLIEST!!!!! ANSWER QUICK
What is the volume of the container below?
Answers
Answer:
1,584in
Step-by-step explanation:
This is geometry on delta math I have no idea how to do it please help me
Answers
Answer:
x = 9
Step-by-step explanation:
We know sum of interior angles of a polygon = [tex](n-2)\times 180[/tex]
For a triangle (having n = 3),
Sum of interior angles = (3 - 2)×180°
= 180°
In ΔVWX,
m∠V = (12x + 19)°
m∠W = (2x + 19)°
m∠X = (x + 7)°
And m∠V + m∠W + m∠X = 180°
(12x + 19)° + (2x + 19)° + (x + 7)° = 180°
(12x + 2x + x) + (19 + 19 + 7) = 180°
15x + 45° = 180°
15x = 180° - 45°
x = [tex]\frac{135}{15}[/tex]
x = 9
Therefore, value of x = 9.
Donna opens a savings account with an initial balance of $50. She then deposits $25 each month. Use an equation, a table, and a graph to explain the relationship between the amount of money in the account, a, and the number of months since Donna opened the account, m. Part A Write an equation to represent the problem. Explain how the value of a changes as m increases. Part B Make a table to show the relationship between m and a. Find 5 ordered pairs. Part C Use your table from Part B to draw a graph to represent the situation.
Answers
Answer:
Below :)
Step-by-step explanation:
Part A) 50+25m=a
You start with 50 dollars in the account, so, that means 50+25m (m being the amount of months) would you should you how much money you have, a.Part B)
See pictureIn triangle ABC, ∠C is a right angle and BC=7. If ∠b=30 degrees, find AC.
A. 7/2
B. 7√3/3
C. 7√3/2
D. √3/7
Answers
Answer B
One thing that gave it away was that we are dealing with a 30-60-90 triangle so in the final equation we should have (x=Any number) [tex]x\sqrt{3}[/tex] not square root two
The triangle ABC with ∠C as right angle , BC = 7 and ∠b = 30 degrees has AC as 7√3 / 3
What is a right angle triangle?A right angle triangle is a triangle that has one of its angle as 90 degrees. Therefore, the sides can be found using trigonometric ratios.
BC = 7 units
∠b = 30°
Hence, AC can be found as follows;
tan 30° = opposite / adjacent
tan 30 = AC / 7
cross multiply
AC = 7 tan 30
AC = 7 × 1 / √3
AC = 7 / √3
AC = 7√3 / 3
learn more on right angle triangle here: https://brainly.com/question/3770177
#SPJ2
See attachment below.
Step - by - step work!
Answers
Answer:
j=c+7
Step-by-step explanation:
If we observe the table we can see that whatever Chris's age is, Jerry's age is 7 years more than that.
we can put c as Chris's age and j as Jerry's age
with this the equation we would get would be
j=c+7
hope i helped!
For a given rectangle the length equal 3x + 2 and the width equal 5 what is the area of the rectangle
Answers
Answer:
15x + 10.
Step-by-step explanation:
To find the area of a rectangle, recall the formula is A = l × w. Therefore:
A = (3x + 2) (5)
Distribute the '5':
A = 15x + 10
Therefore, the area of the rectangle of 15x + 10.
Answer:
15x+10 units ^2
Step-by-step explanation:
The area of a rectangle can be found using:
A = l * w
The length of the rectangle is 3x+2 and the width is 5.
l=3x+2
w=5
Substitute these values into the formula.
A= 3x+2 *5
This can be rewritten as: (Commutative property of Multiplication)
A= 5* 3x+2
A= 5(3x+2)
Distribute the 5. Multiply each term inside the parentheses by the number outside the parentheses.
A= (5*3x) + (5*2)
A= 15x +10
A= 15x+10 units^2
The area of the rectangle is 15x+10 square units.
answer pls for brainliest!!
Answers
Answer:
45
Step-by-step explanation:
5*3 to the second power
= 5* 3 * 3
= 15*3
= 45
Answer:
5 × 3^2
5 × 3 x 3
5 × 9
45 is your answer
Michelle needs to convert the function f(x) = x2 - 10x +31 to vertex form, fx) = (x - 1)2 + k, in order to find the minimum.
When she does this, what is the value of k in the vertex form of function ?
26
56
31
6
Answers
You can do
C-a((b/2)^2))
This is because when you complete the square you have the c value that you have initially minus the new c value which is found by (b/2)^2 and if you factored a number out then multiply it to that.
So in this case
31- 1(10/2)^2
31-(5)^2
31-25
6
Answer:
the answer is 6
Step-by-step explanation:
The ordered pair below is a solution to which equation?
(40,5)
Answers
Answer: C
Step-by-step explanation: Let me know if you need an explanation.
Answer:
Step-by-step explanation:
I pretty sure it c
-Delilah
hope it helps
PLEASE HELP ME THIS IS URGENT I AM BEING TIMED, IF YOU ANSWER THESE TWO QUESTIONS CORRECT I WILL MARK YOU BRAINLIEST!!!
Find the mean, median, and mode for each list of data. Write the mean, then the median, and then the mode. Separate your answers with a comma and a space.
Example: 1, 2, 3
The mean is 1, the median is 2, and the mode is 3.
1. 10, 17, 12, 10, 11
2. 8, 13, 17, 17, 19, 19, 19
Answers
Answer:
1. 10, 17, 12, 10, 11
The mean is 12, the median is 11, and the mode is 10.
2. 8, 13, 17, 17, 19, 19, 19
The mean is 16, the median is 17, and the mode is 19.
FIRST CORRECT ANSWER GETS BRAINLIEST!!! 20 POINTS!!!!!
Answers
Answer:
14
Step-by-step explanation:
When you plug this expression into the calc, you should get 14 as your answer.
Answer:
14
Step-by-step explanation:
-3(7+5)
------------ + 9(2)
3^2
PEMDAS
Parentheses first
-3(12)
------------ + 9(2)
3^2
Then exponents
-3(12)
------------ + 9(2)
9
Then multiply the top of the fraction
-36
------------ + 9(2)
9
Complete the fraction
-4 + 9(2)
Finish multiplying
-4+18
14
What is the scale factor of the dilation?
2
3
1/2
1/3
Answers
A student timed his drive to work each day for three days. The times are shown below:
20 minutes
22 minutes
18 minutes
What was his mean time?
Answers
Answer:
20 minutes
Step-by-step explanation:
The mean, or average of a data set can be found by adding all the values together, and dividing by the number of values.
The data set is: 20 minutes, 22 minutes and 18 minutes
1. Add the values together
Add all the numbers in the set together.
Data set: 20, 22, 18
Add them: 20+22+18
60
2. Divide by the number of values
Count how many numbers are in the set.
In this set, there are 3 numbers.
Divide 60 by 3
60/3 =20
20 minutes
His mean time is 20 minutes.
Answer:
30 minutes
Step-by-step explanation:
Mean means the average so the average equals (20+22+18)/2
= 30
The answer is not c
Answers
Answer:
the answer is a. hope this working helps
The table shows the number of visitors y (in thousands of people) an amusement park has had each year over x years. Use a graphing calculator to find an equation of the line of best fit. Round the slope and y-intercept to the nearest hundredth. Then identify and interpret the correlation coefficient.
Answers
Answer:
The equation of the line of best fit is: y = -2.33x + 591.78
The correlation coefficient is: -0.99
There is a strong negative correlation
Step-by-step explanation:
The negative correlation is seen in the sign of the correlation coefficient, which is negative.
The correlation is strong because the absolute value of the correlation coefficient (0.99) is near to one
What is the simplified form of the expression (x + 6)(7x − 1)
Answers
Step-by-step explanation:
[tex](x + 6)(7x - 1) \\ {7x}^{2} - x + 42x - 6 \\ {7x}^{2} + 41x - 6[/tex]
Answer:
7x^2+41x-6
Step-by-step explanation:
(x + 6)(7x − 1)
FOIL
first x*7x = 7x^2
outer: -1x
inner: 6*7x = 42x
last: -6
Add them together
7x^2 -x+42x -6
Combine like terms
7x^2 +41x -6
Moana and Maui are greatly outnumbered by the kakamora, coconut pirates. If there are two hundred and thirty thousand more kakamora than fifty-seven times the both of them, how many kakamora are there?
Answers
Answer :35,000
Step-by-step explanation:
I’m not sure if this is correct but I think you just have to multiply the two
HELP PLEASE!!! What is NOT true about a hypotenuse?
Answers
Answer:
The sum of the two leg measures equals the hypotenuse.
Step-by-step explanation:
The answer choice "The measure of the hypotenuse squared is equal to the sum of the side measures squared" is true because it is the Pythagorean Theorem.
The other two answer choices basically describe what a hypotenuse is.
Answer:
The sum of the two leg measures equals the hypotenuse.
A coin is tossed 12 times. What is the probability of getting heads exactly 7 times?
Answers
Answer:
17% maybe
Step-by-step explanation:
If m = 70° and m = 30°, then m 2 = 20 35 50
Answers
Answer:
the answer is 50
Josiah takes a multiple-choice quiz that has three questions. Each question has five answer options. If he randomly chooses his answers, what is the probability that he will get all three correct? (Please explain how you got the answer.)
Answers
Answer:The answer would be A. 1 1/5
Step-by-step explanation:
The answer would be A. 1 1/5
48/40 = 1 8/40
1 8/40 Simplify to 1 1/5
Hope this helps!
The answer is 1/125
Hope it helps!
A carbon nanotube is a thin cylinder of carbon atoms that, pound by pound, is stronger than steel and may one day be used in clothing. With a diameter of 4.0×10^-10 in., a fiber can be made 300yd long. Find the volume of such a fiber.
Answers
Answer:
Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. Carbon is one of the few elements known since antiquity.
Step-by-step explanation:
PLEASE HELP ME ON THIS !!!!!!!!!!!!!!!!!
Answers
Answer:
I don't know what the answer is but i'm going to try and work it out, hold on one min
Step-by-step explanation:
What is the factorization of 2x^2+9x+9
Answers
Answer:
(2x+3)*(x+3)
Step-by-step explanation:
Perform the indicated operation and write the result in a+bi form.
-12i(1/(i-1)^2)
A. 6/i
B. 6i
C. 12
D. undefined
Brainliest if you answer right.
Answers
Answer:
6i Or B
Edge^^
If a circle has a radius of 7 square root of 2 and it has a shaded region with an area of 34 pi, find the angle within the shaded region.
Answers
Answer:
The angle of the shaded region is 124.9°
Step-by-step explanation:
Since there's an region inside the circle that is shaded and has an area of 34 pi square units, we can apply the circle's sector area's formula in order to find the angle of this region. The formula is given by:
[tex]\text{sector area} = \frac{\text{angle}*\pi*r^2}{360}\\[/tex]
Applying the data from the problem gives us:
[tex]34*\pi = \frac{angle*\pi*(7*\sqrt{2})^2}{360}\\34 = \frac{angle*(49*2)}{360}\\98*angle = 34*360\\angle = \frac{12240}{98} = 124.9\°[/tex]
The angle of the shaded region is 124.9°
