Final answer:
The standard deviation from the method A is 2.87
The standard deviation from the method B is 1.35
The standard deviation from the method C is 0.42
The standard deviation from the method D is 0.75
What purposes does standard deviation serve?The standard deviation reveals the degree of data skewedness. It gauges how far away from the mean each observed value is. Approximately 95% of values in any distribution will be within two standard deviations of the mean.
The statistical concept of standard deviation is used to quantify the variability or dispersion around an average. It is a measure of volatility technically. The discrepancy between the actual and average value is known as the dispersion. The standard deviation increases as the variability or dispersion increases.
A low standard deviation indicates that the data are tightly grouped around the mean, while a high standard deviation indicates that the data are widely dispersed (less dependable) (more reliable)
Explanation:
The highest standard deviation is found in procedure A. Given that it is not based on any actual measurements and is subject to wildly different subjective judgment, one would anticipate that it would be the largest.
To learn more about standard deviation , visit
brainly.com/question/14725601
#SPJ4
Simplify
(3y)^2 x y^-1
Answer:
9y
Step-by-step explanation:
[tex]\bullet\; \tt{(3y)^2} = 3^2y^2 = 9y^2}[/tex]
[tex]\bullet\; \tt y^{-1} = \dfrac{1}{y}\\\\\bullet\;(3y)^2 \times y^{-1} = 9y^2 \times \dfrac{1}{y } = \dfrac{9y^2}{y}\\\\\\bullet \tt \dfrac{y^2}{y} = y\\\\\tt \bullet \dfrac{9y^2}{y} = 9y[/tex]
In order for Brady to earn a B in his biology course, his test scores must
average at least 80%. On the first 5 tests, he has an average of 77%. There
is one test remaining in the course. What is the minimum score Brady
needs to earn on the last test to receive a B in the class?
Answer:
90
Step-by-step explanation:
In order for Brady to earn a B in his biology course, his test scores must
average at least 80%. On the first 5 tests, he has an average of 77%. There
is one test remaining in the course. What is the minimum score Brady
needs to earn on the last test to receive a B in the class?
simplify 9 +(-2)^3
A. 3
B. 1
C.17
Answer:
B
Step-by-step explanation:
9+(−2)^3
=9+ −8
=1
Answer:
b is your answer
Geometric mean of 4 and 64
Answer: 16
Step-by-step explanation:
Let's say x=Geometric mean.
4*64=x*x
x*x=256
x^2=256
x=16
Look at this incomplete multiplication problem.
154 times 63 = 462. 462 + question mark = blank
The missing value is
A. 904
B.9040
C.9240
Answer:
The answer is C
Step-by-step explanation:
The first step is to multiply 154 and 63 to find the product. The product of those two numbers is 9702.
So the the equation looks like...
462+ Blank = 9702
The easiest thing to do here is subtract 462 from both sides. So 9702-462 which would equal 9240.
So we'll say that the blank is x so now the equation says...
x = 9240
please help I've been trying to solve this for 30-35 minutes
Answers: middle box: 1.32
middle right box: -3.3
bottom left: -0.5
bottom middle: 0.6
Step-by-step explanation:
[Find out the middle box]
[tex]-1.2[/tex] x [tex]-1.1[/tex][tex]=1.32[/tex]
[Find out the box in the middle right]
[tex]3[/tex] x [tex]-1.1 = -3.3[/tex]
[To Find out the bottom left box - divide each side by three]
[tex]x[/tex] x [tex]3 = -1.5[/tex]
[tex]x = -0.5[/tex]
[Bottom middle box]
[tex]-0.5[/tex] x [tex]-1.2 = 0.6[/tex]
General Rule:
[tex]negative[/tex] x [tex]negative = positive[/tex]
[tex]negative[/tex] x [tex]positive = negative[/tex]
Hope this helps :)
Find the quotient: (-y5 - 9y) = y
The quotient of the equation (-y5 - 9y) = y
= 0What is Quotient?The term "quotient" is used frequently in mathematics, and it may also refer to a fraction or a ratio as well as the integer portion of a division (in the case of Euclidean division)[2] (in the case of proper division). In the Euclidean division sense, and in the proper division sense, the quotient is "6 with a remainder of 2" when 20 (the dividend) is divided by 3 (the divisor). A quotient in the second meaning is only the proportion of a dividend to its divisor.
According to the given value,
-y*5-9y=y
Mutiply
-5y-9y=y
Combine like terms
-14y=y
Rearrange the terms
-14y -y= O
Combine the terms
-15y =O
divide on both sides
y=o
Hence , the Quotient is 0.
To know more about QUOTIENT, visit;
https://brainly.com/question/16134410
#SPJ9
Alessa had 50 in her account. she then received four $-25 charges to her account. what is the new balance of her account
The new balance in her account will be $150.
We have Alessa.
We have to find the new balance of her account after receiving four $-25 charges.
What is Account ?Account is referred here as a bank account used for the purpose of saving money by the people.
According to the question -
Initial money in Alessa's account = $50
Total money received = $25 x 4 = $100
Therefore, the new balance in her account will be -
$50 + $25 x 4 = $150
Hence, the new balance in her account will be $150.
To solve more questions on Quantity estimation, visit the link below-
https://brainly.com/question/600735
#SPJ1
helppp meee 40points
Answer:
1) 4a x 4b when a is 2 and b is 2
2) 2a + 4x when a is 2 and x is 8
Step-by-step explanation:
a designer builds a model of a canoe. the finished model is exactly the same shape as the original, but smaller. the scale factor is . (a) find the ratio of the surface area of the model to the surface area of the original. (b) find the ratio of the height of the model to the height of the original. (c) find the ratio of the volume of the model to the volume of the original.
Model is same shape as original with scale factor 2:9.
Ratio of
a. Surface area of model and original is 4:81.
b. Height of model and original is 2:9.
c. Volume of model and original is 8:243.
As given,
Scale factor (a: b)=2:9
Ratio of model and original for
a. Surface area =a²: b²
=4:81
b. Height=a :b
=2:9
c. Volume=a³ :b³
=8:243
Therefore, model is same shape as original with scale factor 2:9.
Ratio of model and original for
a. Surface area is 4:81.
b. Height is 2:9.
c. Volume is 8:243.
The complete question is :
A designer builds a model of a canoe. the finished model is exactly the same shape as the original, but smaller. the scale factor is 2:9.
(a) find the ratio of the surface area of the model to the surface area of the original. (b) find the ratio of the height of the model to the height of the original. (c) find the ratio of the volume of the model to the volume of the original.
Learn more about surface area here
brainly.com/question/2835293
#SPJ4
Communicate and Justify:
Tau says that the
sum of -1 3/4 and 2 1/2 is the same as the difference
between 2 1/2 and 1 3/4. Is Tau correct? Explain why
or why not.
Tau is correct, the sum between -(1 ³/₄) and (2 ¹/₂) is equal to the difference between (2 ¹/₂) and (1 ³/₄)
Is Tau correct?
Remember that the sum between a number A and a negative number -B is written as:
A + (-B)
And that is equal to the difference between A and B.
A - B
In this case, Tau says that the sum between:
-(1 ³/₄) and (2 ¹/₂)
Is written as:
(2 ¹/₂) + (-(1 ³/₄) )
(2 ¹/₂) - (1 ³/₄)
And, using the above property, we conclude that this is equal to the difference between (2 ¹/₂) and (1 ³/₄)
So Tau is correct.
If you want to learn more about sums:
https://brainly.com/question/17695139
#SPJ1
Use a decimal number to fill in the blank. a 16 input mux has _____ select lines.
Use a decimal number to fill in the blank. a 16 input mux has 4 select lines.
What is a decimal number?
A decimal is a number that is divided into two parts: a whole and a fraction. Between integers, decimal numbers are used to express the numerical value of complete and partially whole quantities. For instance, there is one complete pizza and a half of another pizza in the photograph.How do you write decimal numbers?
To write a decimal in word form, follow these steps:
Write the whole number part.Write "and" for the decimal point.Write the decimal part the same way you would write a whole number.Write the. place value. of the last digit.Learn more about decimal numbers
brainly.com/question/4708407
#SPJ4
how do you solve this
A ribbon is 4m long.how many pieces each 30cm long can be cut from the ribbon
Answer: 13 pieces
Step-by-step explanation:
4 m * 100 cm/1 m=
4 * 100/1=
4*100=400 cm.
400/30=
(10+390)/30=
10/30 + 390/30=
1/3 + 13 ==> 13 pieces
Work Shown:
1 meter = 100 cm
4 meters = 400 cm
400/30 = 13.33 approximately
That rounds down to 13
You'll have 400-13*30 = 400-390 = 10 cm of ribbon leftover.
Find the slope of the line. (-4,-1) (4,-3)
Answer:
Step-by-step explanation:
Ans:
−
0.6
What is the missing factor in this factor tree?
Answer:
15
Step-by-step explanation:
30 ÷ 2 = 15
to check, 15 × 2 = 30
14. Wisco's winter carnival is coming up, and Mr. Raymond is in charge of ordering the craft kits again. He knows he ordered 13 boxes of snow globe kits last year but can't remember how many kits came in a box. He checks the records and finds that the school used 172 of the snow globe kits last year and had 10 left over after the event. How many snow globe kits come in each box?
Answer:
169
Step-by-step explanation:
Answer:
Assume x to be the number of snow globe kits that come in each box.
Then the equation that describes the given situation is
13x - 10 = 172
13x = 182
x = 14
So, the number of snow globe kits that come in each box is 14.
Find each angle measure in the figure.
A triangle with angles labeled 4 y degrees, 20 degrees, and left-parenthesis y minus 10 right-parenthesis degrees.
The angle measures are $20\degree$,
°, and
\left(y-10\right)
°.
Question 2
Use the equation to justify your answer.
$20+\left(y-10\right)+4y=$
$y=$
Based on the triangle sum theorem:
20° + (y - 10)° + 4y° = 180
y = 34
What is the Triangle Sum Theorem?The triangle sum theorem states that if we add up all the three interior angles in a triangle, the sum we would get would be equal to 180 degrees.
Given the following are interior angles of a triangle:
4y°(y - 10)°20°Based on the triangle sum theorem, we have the following equation:
20° + (y - 10)° + 4y° = 180
Solve for y
20 + y - 10 + 4y = 180
10 + 5y = 180
5y = 180 - 10
5y = 170
5y/5 = 170/5
y = 34
Learn more about the triangle sum theorem on:
https://brainly.com/question/7696843
#SPJ1
if they are given 2 days to work how many scarves could alexandra make if she spent the whole time knitting scarves?
Alexandra could make 24 scarves if she spent the whole time knitting, by unitary method.
What is unitary method?A single unit's value can be determined from the values of multiple units, and multiple units' values can be determined from the values of single units using the unitary method.
Now,
Refer to the image attached for the values and information.
According to the timeline for Alexandra's production options, if she knits 0 sweaters every day, In one day, 12 scarves were knit. This suggests that if Alexandra knitted scarves all day for two days, by unitary method, she could finish 24 scarves.Hence, Alexandra could make 24 scarves if she spent the whole time knitting, by unitary method.
To learn more about unitary method, refer to the link: https://brainly.com/question/24587372
#SPJ4
Mrs Atkins makes 3 withdrawals of $25. What is the change in her account? Please help me
Her change in account is x - 75 dollars.
How to find her change in account?She makes 3 withdrawals of $25.
Her change in account can be calculated as follows:
Therefore, let's find her change in her account,
Let us say she had x dollars in her account.
She withdraws 25 dollars on three occasions.
Therefore,
total withdrawer = 25 × 3
total withdrawer = 75 dollars
Therefore,
Her change in account = x - 75
learn more on change in account here: https://brainly.com/question/16336216
#SPJ1
Answer:
Step-by-step explanation:
1. 25x3
2.75
A rental car agency charges $180 per week plus $0.25 per mile to rent a car. How many miles can you travel in one week for $382.50?
Answer:
810
Step-by-step explanation:
382.50-180= 202.5
202.5 / 0.25= 810
Hope this helps!
Answer:
810 miles
Step-by-step explanation:
$180 a week is the fixed cost so we subtract this first.
($382.50 - $180 = $202.50)
The number left is the amount of dollars charged per mile.
So if we divide this number by $0.25, we get how many miles travelled.
($202.50 ÷ $0.25 = 810 miles)
Solve for x.
Your answer must be simplified.
X/3>-33
The simplified equation of the X/3 ≥-33 is will be X ≥ -99.
Define Equation simplification:Solving a math problem is another way of saying simplifying an expression. When you simplify an expression, you are attempting to write it in the most straightforward manner feasible. Finally, no more adding, subtracting, multiplying, or dividing should be required.
What is meant by simplification?To make anything simpler or simpler to reduce it to the fundamentals. to reduce in scope or complexity: to streamline management procedures.
Solving:Given = X/3>-33
This can be written as:
X/3 ≥-33
X ≥ -33 * 3
X ≥ -99
The simplified equation of the X/3 ≥-33 is will be X ≥ -99.
To know more about simplification visit:
https://brainly.com/question/2804192
#SPJ9
if sariyah walks 7.7 klometers every day how many klometer does she walk each week?
Answer: If she walks 7.7 klometers each day that would be 53.9 klometers each week
Step-by-step explanation:
Answer:
53.9 kilometers a week
Step-by-step explanation:
7.7 kilometers a day
7 days = 1 week
7 days * 7.7 kilometers = 53.9 kilometers per week
A website begins its first week with 3 subscribers. The number of subscribers each week is listed in the table. Write an expression to model the number of subscribers at the website each week. Use your expression to determine the number of subscribers in week 24.
There are _____
subscribers in week 24.
Answer:
72
Step-by-step explanation:
This is clearly multiplication so all you have to do is multiply 24 x 3 and your answer is There are 72 subscribers in week 24
solve the equation show your solution x plus 12 equals 7
Answer:
-5+12=7
Step-by-step explanation:
7-12=-5
Answer:
-5
Step-by-step explanation:
x + 12 = 7
x + 12 - 12 = 7 - 12
x = -5
8x10+
4x1+ 6x (1/100)
Answer:
8x¹⁰+203x/50
Step-by-step explanation:
Answer: 4203/50
Step-by-step explanation:
8 x 10 + 4 x 1 + 6 x (1/100)=
80 + 4 + 6/100=
84 + 6/100=
84 + 3/50=
(84 + 3/50)*50/50= ==> multiply by 50 to remove denominators
(84 * 50 + 3 * 50/50)/50=
(84 * 50 + 150/50)/50=
(4200 + 3)/50=4203/50
Isabel’s competition,who sells books and no other products, charges a shipping fee of $1.99 per book plus a fixed fee of $3 for each order. Let x be the number of books purchased and f(x) be the price of shipping one order of books. Write a function that expresses f(x) and explain the value of f(x) for x = 0. (5 points)
Answer:
Step-by-step explanation:
for the function i get f(x)=1.99x+3
f(x) = 1.99x + 3 for x>0
x≥1
X cannot get to zero it is no allowed by the function I defined
i tried my best
Mae raised $80 by selling boxes of cookies. Let
b represent the number of boxes of cookies sold.
Each box cost $2.50. Which equation should be
used to determine how many boxes of cookies
Mae sold?
A. 2.50+ b = 80
C. b÷ 2.50 = 80
B. b-2.50 = 80
D. 2.50b = 80
Answer: D
Step-by-step explanation: 2.50xb=80 b= 32 boxes
The inequality -15 <-6 is given. Perform the given operation, then write a true
inequality to match the result.
Subtract 12 from both sides of the inequality.
The result of the operation is -27 < -18 and the result is true
How to perform the operation on the inequality expression?The inequality expression is given as:
-15 < -6
The operation on the inequality expression is given as:
Subtract 12 from both sides of the inequality.
So, we start by subtracting 12 from both sides of the above inequality
This is represented as
-15 - 12 < -6 - 12
Evaluate the difference
So, we have
-27 < -18
The above inequality is true because -27 is less than -18
Hence, the result of the operation is -27 < -18 and the result is true
Read more about inequality at:
https://brainly.com/question/24372553
#SPJ1
a truck driver drove 119 miles in 3 1/4 hours. how many miles did he drive per hour
The truck driver drive 36.61 miles per hour .
The unit method is a method of finding the value of one unit and then finding the value of the required number of units. For simplicity, always write what you calculate on the right and what you know on the left.The formula of the unitary method is to find the value of a single unit and then multiply the value of a single unit to the number of units to get the necessary value.It is given that a truck driver drove 119 miles in 3 1/4 hours .
On simplifying the time , we get
[tex]3\frac{1}{4} =\frac{3\times4+1}{4}\\\\ 3\frac{1}{4} =\frac{13}{4}[/tex]
which means that truck driver drove 119 miles in [tex]\frac{13}{4}[/tex] hours .
Using unitary method , we get
[tex]\frac{13}{4}[/tex] hours is taken by driver to complete = 119 miles
1 hour is taken by driver to complete [tex]=\frac{119\times4}{13} \\[/tex]
[tex]=36.61 \ miles[/tex]
Learn more about unitary method here :
https://brainly.com/question/24587372
#SPJ9