Answer:
12
Step-by-step explanation:
A study was commissioned to find the mean weight of the residents in a certain town. The study examined a random sample of 132 residents and found the mean weight to be 162 pounds with a standard deviation of 35 pounds. At the 95% confidence level, find the margin of error for the mean, rounding to the nearest tenth
Answer: 6.1
We are 95% confident that the true mean weight of the population is within 6.1 pounds of the sample mean 162.
At the 95% confidence interval, the margin of error for the mean is 6.1 pounds
What is margin error?The margin of error is "a statistic expressing the amount of random sampling error in the results of a survey".
According to the question,
Number of random samples (n) = 132 residents
Mean of weight of random samples (x⁻)= 162
Standard deviation of random samples (σ)= 35 pounds
In order to find at the 95% confidence interval, the margin of error for the mean.
Margin error = z (σ/√n)
The critical region 95% confidence interval under normal curve is 1.96.
= 1.96 (35/√132)
=1.96(35/11.48)
=1.96(3.0488)
= 5.9708636 ≈ 6.1 pounds
Hence, at the 95% confidence interval, the margin of error for the mean is 6.1 pounds.
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Which pair of triangles can be proven congruent by SAS?
Third pair of triangles is congruent by SAS.
What is congruency?In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.
If any two sides and angle included between the sides of one triangle are equivalent to the corresponding two sides and the angle between the sides of the second triangle, then the two triangles are said to be congruent by SAS rule.
In the third pair, this rule is visible. Two pair of sides are equal to each other and the angles formed at the common vertex of the two sides are equal. Hence, the two triangles are congruent by SAS.
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What would be the reason?
Answer:
For what comment it and ill answer
Step-by-step explanation:
Answer:
The reason for what?
Nothing else is here.
how do you turn 20 into a fraction?
Step by step explaination
Answer:
20 can work as an improper fraction, like 20/1. or you can de-simplify it or whatever it's called and make it like 40/2 or 80/4. Hope this helps. :)
Step-by-step explanation:
p
The answer is [tex]\frac{40}{2}[/tex] or [tex]\frac{60}{3}[/tex]
----------------------------------------
[tex]\frac{20x2}{1x2}[/tex]= [tex]\frac{40}{2}[/tex]
[tex]\frac{20x3}{1x3}[/tex]= [tex]\frac{40}{3}[/tex]
(hope this help you :D)
resolucion de ese ejercicio por favor
Answer:
what?
Step-by-step explanation:
..................................................
Convert the following fraction to a decimal.
A. 0.79
B. 0.70
C. 0.7
D. 0.07
Answer:
what is the fraction?
Step-by-step explanation:
A rectangle’s width is one-fourth of its length. Its area is 9 square units. The equation l(l) = 9 can be used to find l, the length of the rectangle.
What is the length of the rectangle?
0.75 units
1.5 units
3 units
6 units
Answer:
6 units
Step-by-step explanation:
The formula for the area of a rectangle = Length × Width
A rectangle’s width is one-fourth of its length.
W = 1/4 × L
W = L/4
Cross Multiply
L = 4W
A = 9 square units
Hence
9 = L × W
We substitute 4W for L
9 = 4W × W
9 = 4W²
We square root both side
√9 = √4W²
3 = 2W
W = 3/2
W = 1 1/2 unit or 1.5 units
Solving for L = Length
9 = L × W
9 = L × 1.5
L = 9/1.5
L = 6 units
Therefore, the Length of the rectangle = 6 units
According to a survey of workers, 5/25 of them walk to work, 1/25 bike, 4/25 carpool, and 15/25 drive alone. What percent of workers walk or bike to work?
Answer: 24%
Step-by-step explanation:
First add up the proportion of people who walk to work and those who bike as well. This will show the proportion of people who walk or bike to work.
This is:
= 5/25 + 1/25
= 6/25
Then convert this to a percentage:
= 6/25 * 100
= 24%
How do I solve this without it giving me an actual inequality? It’s just the graph and possible solution...
Answer:
B and CStep-by-step explanation:
Looking at the graph we can see that:
(1, 5) - lies on the border line, no(1, 0) - in the shaded region, yes(4, 2) - in the shaded region, yes(-1, 5) - lies outside of the shaded region, no(-4, 1) - lies outside of the shaded region, noAnswer:
D.
Step-by-step explanation:
Sorry if wrong :> Hope i helped! Have a awesome day!!! You're a great hooman ^_^ Please mark brainliest !!
1. Given:
-2x +1, x <-2
f(x) = {5,-2 <x<3
*+4,x>3
2
Evaluate: A) f(-2) B) f(0)C) f(5)
D) Sketch the graph of f(x)
Which sets of side lengths could form a triangle?
A. 3 centimeters, 4 centimeters, 9 centimeters
u
B. 3 centimeters, 6 centimeters, 9 centimeters
C.4 centimeters, 5 centimeters, 9 centimeters
D. 4 centimeters, 6 centimeters, 9 centimeters
E. 5 centimeters, 5 centimeters, 9 centimeters
Answer:
D and E
Step-by-step explanation:
The 2 smallest sides added up are larger than the biggest side
Answer:
I tried all of them but I keep getting decimals instead of 9
Step-by-step explanation:
please help me with this math question please I'm giving away brainliests
Answer:
DOMAIN : R/2
RANGE : R/5
VERIT TRANS =2
HORIZ TRANS =5
Step-by-step explanation:
answer both. please help. i will etransfer you if u can answer all my questions!!!!
Answer:
honestly i dont know :(
Step-by-step explanation:
Answer:
a: -5
k: 1/4
d: 3
c: 2
[tex]g(x) =2-\frac{5}{4(x-3)}[/tex]
Step-by-step explanation:
Explanation is in Picture. Reflections across x-axis make a negative.
For b), look up 'Transformations of the 1/x function' and watch the video by Ragini Narasimhan. He explains it well
If (x) = 3x^2+ 10, what is f(-7)?
Answer:
157
Step-by-step explanation:
3(-7)² + 10
3(49) + 10
147+10
157
- Gage Millar, Algebra 2 Tutor
mellany had 29 peaches left at her roadside food stand she went to the orchard to pick more peaches how many peaches does she have now
Answer:
Not enough info
Step-by-step explanation:
They don't tell us how many peaches she picked
solve for A no links
Answer:
71.1 degrees
Step-by-step explanation:
The side opposite angle A is 35 and that adjacent to angle A is 12. The trig function that connects A and these two sides is
tan A = (opp) / (adj)
which here is
tan A = 35/12. Find A using a calculator's arctan function:
arctan 35/12 = 1.25 radian or 71.1 degrees.
Write the absolute value inequality in the form |x-b| c that has the solution set x<-5 or x>7.
Which piecewise relation defines a function?
x², X<-2
O y=0, -2
-X?. x24
x² xs-2
O y =
4, -2
x2 +1, x22
(-3x, X<-2
O y =
3, 0
2x, x4
(-3x, XS-4
O y= 3, -5
The piecewise relation which defines a function is option B.
What is a function?A function can be defined as a mathematical expression that defines and represents the relationship between two or more variable.
The types of function.In Science, there are different types of functions and these include the following;
Periodic functionInverse functionModulus functionSignum functionPiece-wise defined functionA piecewise-defined function refers to a type of function that is defined by two (2) or more mathematical expressions (equations) over a specific domain. As an example, we have:
[tex]F(x)=\left \{ {{x^3-4} \atop {x+3}} \right.[/tex]
Read more on function here: https://brainly.com/question/4246058
In February, Ronald. Read a book that was 98 pages long. In March, he read a book that was 124 pages long. In April, he read a book that was 208 pages long. How many pages did Ronald read in February, March and April?
Answer:
430
Step-by-step explanation:
You add 98+124 which is 222 then add it plus 208 which is 430
Answer:
the answer is 430 books for 3 months
HELPPPP PLEASEEEEEEEEE
Answer:
i have no idea
Step-by-step explanation:
please help i’ll give brainliest
Answer:
1st option
Step-by-step explanation:
Thats a weird problem tho,
-Gage Millar, Algebra 2 tutor
I would like some assistance. Please, no downloadable virus links. I just need, a direct answer. Thanks.
Answer:
c
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
GIVING 30 PONTS!! PLEASE ANSWER ALL 4!! NO LINKS
Answer:
See below
Step-by-step explanation:
The measure of all the arcs can be obtained by using 'Central angle and its corresponding arc theorem'.
1. The measure of arc AD is [tex] \boxed {105}\degree [/tex]
2. The measure of arc ABC is [tex] \boxed {205}\degree [/tex]
3. The measure of arc ADB is [tex] \boxed {190}\degree [/tex]
4. The measure of arc BD is [tex] \boxed {85}\degree [/tex]
What value of x makes the following equation true? Show your work.
2/3x+4=22
Answer:
27
Step-by-step explanation:
2/3x27=18
18+4=22
Answer:
2/3x=22-4
2/3x=18
X=18*3/2
X=9*3
therefore X =27...
hope it helps
What is the angle of depression from the top of a 400-fc foot cable that runs from a towel to a point 325 feet away
Amber surveyed a random sample of 100 students from her middle school to learn more about what type of school lunches are preferred. The table below shows the result of the survey:
Hamburgers Spaghetti Pizza
Sample #1 44 43 13
Sample #2 39 41 20
Which of the following inferences can be made based on the data? (5 points)
a
Hamburgers are the most preferred lunch.
b
Pizza is two times more popular than spaghetti.
c
Pizza is two times more popular than hamburgers.
d
Hamburgers and spaghetti are preferred almost equally.
Answer:
d Hamburgers and spaghetti are preferred almost equally.
hii! please help asap. i’ll give brainliest
Answer:
Its 8
Step-by-step explanation:
add all the numbers then divide by 6.
Answer:
it is 11
Step-by-step explanation:
I am a professor and I'm related to Albert Einstein so, please give me points and brainliest please.
PLEASE HELP RATIONAL EQUATIONS
HELP
I will mark brainliest just answer quick
solve (4*3) + 2 , how are you all , freeee points
Step-by-step explanation:
hope it is helpful to you
Answer:
14 is the answer.
Step-by-step explanation:
(4 × 3) + 2 = ?
→ (4 × 3) + 2
→ 12 + 2 = 14