Answers
Related Questions
Which box plot matches the date set 34,36,41,45,49,50,51,52,56,59
Answers
Answer:
D
Step-by-step explanation:
The box has to go from the first to the third quartile and that one does and c isn't correct because the line isn't at the median.
Kendall worked 25.5 hours one week.
If he earns $12.50 per hour, how
much did he earn that week? How did
you know where to put the decimal
point?
Answers
multiply 25.5 by 12.5 which equals 318.75.
to know where to put the decimal, you count the numbers to the right of the decimal point. in this equation youre multiplying 25.5 and 12.5. there are 2 numbers to the right of the equation so in your answer, there should be 2 numbers to the right of the decimal.
The life in hours of a biomedical device under development in the laboratory is known to be approximately normally distributed. A random sample of 15 devices is selected and found to have an average life of 5625.1 hours and a sample standard deviation of 226.1 hours.
Required:
a. Construct and interpret a 95% (two sided) confidence interval for the population standard deviation of the life of a biomedical device.
b. Test the hypothesis that the true mean life of a biomedical device is greater than 5500 using the P-value approach.
Answers
Answer:
Part a [5522.3511 ; 5727.8488]
Part b. The p-value is 0.050115.
The H0 is rejected and concluded that the true mean life of a biomedical device is greater than 5500.
Step-by-step explanation:
The 95 % confidence interval for the mean of the population is given by
∝= 1- 0.95= 0.05
υ= n-1= 15-1= 14
x`± t ∝() s / √n
5625.1 ± { t (0.05) (14)} 226.1 / √15
5625.1 ± 1.76 * 226.1/3.8729
5625.1 ± 102.7488
[5522.3511 ; 5727.8488]
Part b
State the null and the alternate hypothesis
H0: u= 5500 against the claim Ha: u > 5500
the test statistic
t= x`- u/ s/ √n
t= 5625.1-5500/226.1 / √15
t=2.143
The p-value is 0.050115.
The result is not significant at p < 0.05.
The H0 is rejected and concluded that the true mean life of a biomedical device is greater than 5500.
What is the answer? Please tell me soon.
Answers
Answer:
61
Step-by-step explanation:
it's only 1 number difference
A college student has two different jobs. Her combined work schedules consist of no more
than 48 hours in one week.
Which graph best represents the solution set for all possible combinations of x, the number of
hours she worked at her first job, and y, the number of hours she worked at her second job,
in one week?
Work Schedule
Work Schedule
54
42
36
30
с
Number of Hours Worked
54
48
842
36
30
24
18
12
6
24
18
12
6
0
6 12 18 24 30 36 42 48 54
Number of Hours Worked
at First Job
6 12 18 24 30 36 42 48 5x
Number of Hours Worked
at First Job
Work Schedule
Work Schedule
В
B
Number of Houn worked
48
42
36
30
24
18
12
6
D
Number of Hours Worked
Second Job
54
48
42
36
30
$24
18
12
6
0
6 12 18 24 30 36 42 48 54
Number of Hours Worked
at First Job
6 12 18 24 30 36 42 48 54
Number of Hours Worked
at First Job
Answers
Answer:
A
Step-by-step explanation:
I just did it and it was the correct answer !
A woman bought some large frames for $13 each and some small frames for $6 each at a closeout sale. If she bought 18 frames for $136, find how many of each type
she bought
She bought large frames
vie
Answers
Answer:
she bought 4 large frames and 14 small frames!
Step-by-step explanation:
This is a system of equation problem!
let's say that x= large frames and y=small frames.
since there's 18 total, we already have our first equation set.
x+y=18
(number of large frames) + (number of small frames)= 18
13x would represent the large frames because each one is 13 dollars.
6y would represent the small frames because each one is 6 dollars.
Since she paid 136 dollars total, we can already tell that
13x+6y=136
(price of large frames*number of large frames) + (price of small frames*number of small frames)=136.
Now, time for the math!
Attached below is how you would work it out using substitution.
Hope this helps!
x=4 and y=14
Meaning that she bought 4 large frames and 14 small frames!
Find the slope of the
(4,5), (6,2)
Answers
Answer:
Answer and steps are in picture.
15. Find the area of the circle. Use 3.14 as pie. Round to the nearest tenth. Include units. The radius is 4 inches.
Answers
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 50.24
Explanation:
3.14(4)^2 = 50.24
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: A=50.2
Step-by-step explanation:
using 3.14 as pie...
A=3.14[tex]r^{2}[/tex]
A=3.14x[tex]4^{2}[/tex]
A=3.14x16
A=50.24
rounding to nearest tenth..
A=50.2
Can someone help me find the area
Answers
Answer:
136 cm²
Step-by-step explanation:
Area of the composite figure = area of the triangle + area of the rectangle
= ½*bh + L*W
Where,
b = 16 - 8 = 8 cm
h = 13 - 7 = 6 cm
L = 16 cm
W = 7 cm
Plug in the values into the equation
Area of the composite figure = ½*8*6 + 16*7
= 24 + 112
= 136 cm²
Coin Calculation plz help
Answers
Answer:
You didnt add a question, file or possible answer choices
A teacher buys packs of notebooks to give to his students. The ratio of gold notebooks to red notebooks is represented in the tape diagram.
Answers
Answer:
40 gold notebooks
Step-by-step explanation:
5:3 gold notebooks to red notebooks so using this we can set up a proportion
5 x
-- = ---
3 24
cross multiplying
3x = 120
x= 40
so there are 40 gold notebooks if there are 24 red notebooks
Answer: Answer above is right. Kudo's to him
Step-by-step explanation:
what is the area of the figure?
Answers
Area r= 1 2/3
Area total = 5 1/3
Given the function: f(x)=x^2+1
a) Find f(–6) | b) Find f(8)
pls help me
Answers
Answer:
a) f(-6) = 37
b) f(8) = 65
Step-by-step explanation:
f(-6) = (-6)² + 1 = 36 + 1 = 37
f(8) = 8²+ 1 = 64 + 1 = 65
Katya went to a craft store to buy beads. The table shows her choices.
Bead Packages
Number per Package
Cost
25
$1.25
70
$2.50
100
$2.95
180
$3.60
Which should Katya choose if she wants to buy the package of beads with the lowest unit cost?
O A. 25 beads for $1.25
B. 70 beads for $2.50
O C. 100 beads for $2.95
D. 180 beads for $3.60
Answers
Answer:
100 beads for $2.95
Step-by-step explanation:
This is because the unit cost per item if you buy 100 beads for $2.95 would be $0.03
2, 8, 14, 20, ...
O Arithmetic
O Geometric
O Neither
Answers
That is the study of sequences of numbers
What is the volume of the rectangular prism?
Answers
Answer:
7m^3
Hope you have a good day lad!
Yo please help I’ll mark you brainliest
Answers
Answer:
1116units²
Step-by-step explanation:
area of trapezium= (a+b)h all over 2
a=38
b=55
h=24
area= (38+55)*24 allover 2
area= 1116units²
Seventy-five college students are taking part in a study initiated by a large computer manufacturer. The company is designing a new type of laptop computer and has created prototypes of it with two different keyboard designs. They are also including the current design of the laptop in the experiment. Each of the students was randomly assigned to one of the three types of computers. The students are asked to spend 15 minutes on one of the computers performing several tasks (typing words, numbers, making corrections, etc.). The ease of use of the keyboard was then rated on a five-point scale by having the students fill out a short questionnaire. Which of the following was not used in this experiment?
a. control
b. replication
c. blocking
d. randomization
Answers
Answer:
c
Step-by-step explanation:
blocking is not used in this experiment
a contractor was paving a driveway he mixed 4/7 ton lf sand and 1/3 ton of concrete how much did the mixture weigh
Answers
Answer: 19/21
Step-by-step explanation: find the same multiple for both so you can combine them
PLEASE HELP. I BEG. THIS IS DO IN A COUPLE OF HOURS.
1. Kristie ate lunch at Pholicious and wanted to leave a 15% tip. Her meal cost $15.75.
How much should she leave for tip? Round to the nearest cent. Explain how you got
your answer.
<
2. Lyla bought a pair of shoes that cost $80. The discount is 50% off and she has a
coupon for an additional 10% off the discounted price. What is the final price of the
shoes before tax? Explain how you got your answer.
3. Andy bought the Xbox One bundle on Black Friday for $350 and the NBA 2K18 for
$45.
PART A. If sales tax is 8% in orange county what is the sales tax that he will be round to the nearest sent
part to be
Part B what is the total price?
Explain how you got your answer.
Answers
Answer:
Step-by-step explanation:
Meal cost=$15.75
tip=15%
= (15*15.75) /100
=236.25/100
=2.235$=2.24 will give as tip
Cost of shoes=80$
Discount=50%
coupon discount=10%
Total discount=50%+10%=60%
Final price of shoes=?
( 60*80)/100
4800/100
48
60% of 80 is 48 .
pricec that lyia paid=total price-dicount
=80-48
=32$
Xbox=$350
NBA=$45
total=395$
sales tax=8%
(8*395)/100
3160/100
31.6=31.60$
For total price=31.60+395=426.6$
Answer:
1.) $2.36
2.) $36
3.) a) $31.60
3.) b) $426.60
Step-by-step explanation:
1.) To begin we need to convert 15% to a decimal. To do this we can move the decimal point 2 spaces to the left. This gives us 15% -> 0.15
Then we multiply this number (0.15) by the total mean cost.
15.75 · 0.15 = 2.36
This means that a 15% tip on a $15.75 meal would add $2.36 to the total cost.
2.) To begin we need to find what 50% of 80 is. This is simple because 50% is half of the original price. We can also move the decimal place over 2 numbers to the left to get 0.50 and multiply this by the original price.
80 · 0.50 = 40 OR... 80 ÷ 2 = 40
Now the problems says that Lyla has an extra 10% off from that discounted price that we just figured out (40). We move the decimal place 2 numbers to the left again and multiply by 40.
40 · 0.10 = 4
Finally we subtract our 10% discount (which is $4) from our new original price ($40).
40-4 = 36
3.) a.) 350 + 45 = $395 ( this is the price of both items before tax).
To find the extra cost of the 8% tax we move the decimal over to the left 2 places. 8% -> 0.08
We can then multiply of cost and tax.
395 · 0.08 = 31.60 (this means that there is a $31.60 tax on this purchase).
3.) b.) For the total price we add the tax we just found and the original cost of the 2 items.
$31.60 + $395 = $426.60
The rabbits ate five sevenths of the kale crop in each of 3 gardens. What fraction of kale crop did they eat in all?
eight sevenths
fifteen twenty ones
fifteen sevenths
eight tenths
Answers
The amount of yield that kale ate in all portions will be 15/7. Then the right choice is C.
What is Algebra?Variable-based math is the investigation of dynamic images, while rationale is the control of that large number of thoughts.
The abbreviation PEMDAS represents Bracket, Example, Augmentation, Division, Expansion, and Deduction. This approach is utilized to answer the issue accurately and totally.
The bunnies ate five-sevenths of the kale crop in every one of 3 nurseries.
The amount of crop that kale ate in all in fraction will be given as,
⇒ 3 x (5 / 7)
⇒ 15/7
The amount of crop that kale ate in all in fraction will be 15/7. Then the correct option is C.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
Find the value of x
Answers
Answer:
v=53
Step-by-step explanation:
90-37=53
Michaels front door has a permit perimeter of 26 feet the width of the doors 4 feet what is the length of the door
Answers
Answer:
I'm pretty sure it's 9. Hope this helps!:)
The triangle shown below has an area of 16 units^2
Answers
Answer:
8
Step-by-step explanation:
base x height / 2 = the area
4 x h / 2 = 16
h = 8
so x is 8
Answer:
8
Step-by-step explanation:
i just took the quiz
name types of angles in geometric figures
Answers
Answer:
obtuse angle,acute angle,right angle,straight angle hope it helps
Right --> 90 degrees
obtuse --> more than 90 degrees but less than 180
straight --> 180 degrees
reflex --> greater than 180 degrees
full rotation --> 360 degrees
A store owner has 12 pounds of pasta worth 70¢ a pound. She wants to mix it with
pasta worth 45¢ a pound so that the total mixture can be sold for 55¢ a pound
(without any gain or loss). How much of the 45¢ pasta must she use?
Answers
Answer:
The store owner must use 18 pounds of the 45 ¢ pasta.
Step-by-step explanation:
Given that a store owner has 12 pounds of pasta worth 70 ¢ a pound, and she wants to mix it with pasta worth 45 ¢ a pound so that the total mixture can be sold for 55 ¢ a pound, to determine how much of the 45 ¢ pasta must she use, the following calculation must be performed:
100 x 0.7 + 0 x 0.45 = 70
90 x 0.7 + 10 x 0.45 = 67.5
50 x 0.7 + 50 x 0.45 = 57.5
40 x 0.7 + 60 x 0.45 = 55
40 = 12
60 = X
60 x 12/40 = X
720/40 = X
18 = X
Thus, the store owner must use 18 pounds of the 45 ¢ pasta.
A bag contains 7 blue, 4 yellow, 4 green, and 5 red marbles. Find the probability of choosing a green marble without looking. Mark only one oval. Dood
Answers
Answer:
1/4
Step-by-step explanation:
total balls=7+4+4+5=20
probability of green marble=?
green marbles are 5 so,
Probability=number of favourable outcomes / number of all possible outcomes
total outcomes=20
green ball chances=5
=5/20
=1/4
g(x) = -4x+4
h(x)= x³+4x²
find g(x)•h(x)
Answers
Answer:
4x^4-12x^3+16x^2
Step-by-step explanation:
(-4x+4)(x^3+4x^2)
a b c d
using foil method multiply
term a by term c and d
-4x * x^3= -4x^4
-4x * 4x^2= -16x^3
*dont forget to add the exponents, when x is by itself you it always has an imaginary 1
then multiply term b by term c and d
4 * x^3= 4x^3
4 * 4x^2= 16x^2
line up all of your answers from biggest exponent to smallest
-4x^4-16x^3+4x^3+16x^2
we can combine like terms with -16x^3 and 4x^3 becaus ethey have the same exponent value
4x^4-12x^3+16x^2
Please answer this thanks
Answers
2) adjacent (they are next to each other)
[tex]1) \longrightarrow\boxed{ \bf \: Vertical \: angles} \: ( \sf \: they \: share \: the \: same \: vertex) \\ 2) \longrightarrow\boxed{\bf \: Adjacent \: angles} \: ( \sf \: they \: are \: located \: next \: to \: each \: other)[/tex]
Can someone please help me out?
Answers
Answer:
x | f(x)0 | 02 | 25 | 39 | 110 | 0Step-by-step explanation:
On the left side of the chart, is the x values. The x values are listed on the x axis which is the horizontal line.
The right side of the chart are the y values. The y values are listed on the y axis which is the vertical line.
Knowing this, we can start
First, for all the answer that we know the x value, we need to find the number that matches on the x axis. Once we find that number, we go up or down on the y axis until we find the line.
If we know the y value, we need to find the number that matches on the y axis. Then we will go right until we find the line.
Remember - There CAN NOT be two y values for the same x value but THERE CAN BE two x values for the same y value