Answer:
[tex]-\frac{2}{25}[/tex]
Step-by-step explanation:
slope is the change in y over the change in x.
change in y is 14-18= -4
change in x is 30-(-20)= 50
so the answer is -4/50
we can factor out 2 from both equations to simplify the fraction. this gives us -2/25
In the spring of 2017, the Consumer Reports National Research Center conducted a survey of 1,007 adults to learn about their major healthcare concerns. The survey results showed that 579 of the respondents lack confidence they will be able to afford health insurance in the future. (a) What is the point estimate of the population proportion of adults who lack confidence they will be able to afford health insurance in the future. (Round your answer to two decimal places.) (b) At 90% confidence, what is the margin of error
Answer:
a) The point estimate of the population proportion of adults who lack confidence they will be able to afford health insurance in the future us 0.58.
b) The margin of error is of 0.03.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
Point estimate:
The point estimate is [tex]\pi[/tex].
Margin of error:
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
(a) What is the point estimate of the population proportion of adults who lack confidence they will be able to afford health insurance in the future.
579 out of 1007 adults. So
[tex]\pi = \frac{579}{1007} = 0.575[/tex]
Rounding to two decimal places, 0.58
The point estimate of the population proportion of adults who lack confidence they will be able to afford health insurance in the future us 0.58.
(b) At 90% confidence, what is the margin of error
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
The margin of error is:
[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
[tex]M = 1.645\sqrt{\frac{0.58*0.42}{1007}}[/tex]
[tex]M = 0.03[/tex]
The margin of error is of 0.03.
The points (-1,-3, -1,7) Is located in which quadrant
Answer:
-1,-3 is on quadrant 3
-1,7 is on quadrant 2
Step-by-step explanation:
7. A shopkeeper buys a stove from a manufac-
turer. The shopkeeper sells the stove for $2 500
at a profit of 20%.
(a) What amount did the shopkeeper pay the
manufacturer for the stove?
Answer:
I believe the amount that the shopkeeper would've paid for the stove is $2083
Step-by-step explanation:
2500×100/120 = 2083.33
A container holds 54.6 gallons of liquid. The container leaks 8.4 gallons per hour.
How many hours will it take for the container to empty?
Answer:
6.5
Step-by-step explanation:
im doing this for points ok
The solution is, it take 6.5 hours for the container to empty.
What is division?Division is the process of splitting a number or an amount into equal parts. Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.
here, we have,,
given that,
A container holds 54.6 gallons of liquid.
The container leaks 8.4 gallons per hour.
i.e. we get,
8.4 gallons leak in 1 hour
so, 54.6 gallons will leak in = 54.6/ 8.4 hours
now, we get,
54.6/ 8.4
=6.5
Hence, The solution is, it take 6.5 hours for the container to empty.
To learn more on division click:
brainly.com/question/21416852
#SPJ3
Andre and Noah started tracking their savings at the same time. Andre started with $15 and deposits $5 per week. Noah started with $2.50 and deposits $7.50 per week. The graph of Noah's savings is given and his equation is y=7.5x+2.5, where x represents the number of weeks and y represents his savings.
1. Write the equation for Andre's savings.
2. Graph it alongside Noah's.
3. What does the intersection point mean in this situation?
Answer:
1. he started with 15 and 5 per week. w is week
a is andre
a = 15 + 5w
Step-by-step explanation:
Answer: 1. Y= 5x + 15
2. Start at 15 and go up 5
3.when they both had the same amount of money at the same time
Step-by-step explanation:
A private beach is 6/7 mile in length and 1/4 mile in width. What is the area of the private beach? (Don't forget to simplify)Immersive Reader
(20 Points)
PLEASE HELP I ONLY HAVE 4 MINUTES :(
Answer:
28.3
Step-by-step explanation:
2 x r x pi = 9 x pi = 28.27433388
to the nearest tenth 28.3
A customer service representative must spend different amounts of time with each customer to resolve various concerns. The amount of time spent with each customer can be modeled by the following distribution : X~Exp (0.2)
Find the quartile 3. Round to the nearest tenth.
Answer:
The quartile 3 is 0.3
Step-by-step explanation:
Exponential distribution:
The exponential probability distribution, with mean m, is described by the following equation:
[tex]f(x) = \mu e^{-\mu x}[/tex]
In which [tex]\mu = \frac{1}{m}[/tex] is the decay parameter.
The probability that x is lower or equal to a is given by:
[tex]P(X \leq x) = \int\limits^a_0 {f(x)} \, dx[/tex]
Which has the following solution:
[tex]P(X \leq x) = 1 - e^{-\mu x}[/tex]
The probability of finding a value higher than x is:
[tex]P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}[/tex]
X~Exp (0.2)
This means that [tex]m= 0.2, \mu = \frac{1}{0.2} = 5[/tex]
Find the quartile 3.
The 3rd quartile is the 75th percentile, for which [tex]P(X \leq x) = 0.75[/tex], or [tex]P(X > x) = 1 - 0.75 = 0.25[/tex]
Since
[tex]P(X > x) = e^{-\mu x}[/tex]
[tex]e^{-5x} = 0.25[/tex]
[tex]\ln{e^{-5x}} = \ln{0.25}[/tex]
[tex]-5x = \ln{0.25}[/tex]
[tex]x = -\frac{\ln{0.25}}{5}[/tex]
[tex]x = 0.277[/tex]
Rounding to the nearest tenth, the quartile 3 is 0.3.
on june 1 Mary Barkley deposited 1000 in a savings account that pays 5.5 percent interest compounded daily. on june 26th, how much interest had been earned on the principal in her account?
9514 1404 393
Answer:
3.77
Step-by-step explanation:
For daily compounding, the balance is ...
A = P(1 +r/365)^n . . . . principal P invested at annual rate r for n days
A = 1000(1 +0.055/365)^25 ≈ 1003.77
Of this amount, 1000 is the original principal. The difference is the interest.
The interest earned is 3.77.
Which question is a statistical question?
How old is the class guinea pig?
O How many calories are in a particular egg?
How many jellybeans are in the classroom jar?
O How tall are African giraffes?
Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
tinyurl.com/wpazsebu
Answer:
Step-by-step explanation:
Susie is paying $568.97 every month for her $150,000 mortgage. If this is a 30 year mortgage, how much interest will she pay over the 30 years of payments?
Answer:
Step-by-step explanation:
Take the paying multiply by months then take the years - the total loan
so you'd have 568.97(12)30-150000=54829.20
.....................help
9514 1404 393
Answer:
-0004.00
Step-by-step explanation:
The segment has a "rise" of -4 units for the "run" of 1 unit between x=2 and x=3. Then the slope is ...
slope = rise/run = -4/1 = -4
PLZ ONLY TYPE IN SSS , ASA, SAS, AAS, HL) IF
the triangles are not congruent, type in NEI
Answer:
Step-by-step explanation:
the first picture shows that two sides are the same and one angle so you know it's a SAS, the one tick mark and that the two trialge share one common side is how you know 2 sides are the same, and the 90 ° corner symbol shows you know an angle in each , that is also the same.
the second picture shows 3 sides the same so SSS, the triangles share one side, and have the tick marks, showing that each of the respective sides are the same.
:)
3/4x - 7 > 5
whats the inequality ?
Answer:
x > 16
Step-by-step explanation:
3/4x > 12
3x > 48
x > 16
hope this helps
I need help I'll give out 40 points quickly
Answer:
The figure in the upper right corner.
A trapezoid has two parallel sides
Step-by-step explanation:
Answer:
The answer would be the shape on the right side on the top! NOT THE Rectangle (on the right bottom side) or the rhombus (on the left top side). The shape on the left bottom side IS a trapezoid.
Hope that helps. And this wasnt worth 40 points, it was only 5 points!?
PLS HELP ME ASAPPP!!!!
Answer:f is the answer
Step-by-step explanation:
Matteo has &400 in his saving account. on average he spends $10 per week on buying apps. Luca has $200 in his savings account. he is saving $15 a week in order to buy a new Playstation. When will matteo and luca have the same amount of money?
Answer:
8 weeks
Step-by-step explanation:
Given data
Matteo
Amount= $400
Spending per week= $10
Hence his balance after x weeks is given as
y=400-10x-------------1
Luca
Amount= $200
Spending per week= $15
Hence his balance after x weeks is given as
y=200+15x-------------2
Equate 1 and 2
400-10x=200+15x
collect like terms
400-200=15x+10x
200=25x
x= 200/25
x= 8 weeks
Hence it will take 8 weeks
Can someone answer part B for me? Thank you and will give brainliest.
Answer:
The answer to part B is B.
Step-by-step explanation:
Could you take another photo so I can see the bottom of the page?
what is 18 + (31-19) x 3
Answer:
18+(93-57)
18+(36)
54
Step-by-step explanation:
Multiply before addition.Using bodmas
plssss help i just need the answer
Answer:
x=19
HOPE THIS HELPS
-Todo <3
Step-by-step explanation:
6x+3x-5+14=180
9x+9=180
-9 -9
9x=171
/9 /9
x=19
1
Pierre and Jen collect badges. Pierre has 3 times as many badges as Je
This can be shown by p= 3j, where p = the number of badges
Pierre owns and j = the number of badges Jen owns.
If Pierre has 12 badges, how many does Jen have?
Pierre and Jen collect badges. Pierre has 3 times as many badges as Je
This can be shown by p= 3j, where p = the number
who is the president of Tanzania?
Answer:
Samia Suluhu HassanStep-by-step explanation:
Answer:
The current president of the United Republic of Tanzania is
Her excellency Mama Samia Suluhu Hassan.
Step-by-step explanation:
Respect to this woman .
She is from the beautiful island of Zanzibar.
UR of Tanzania is a union government of Tanganyika and Zanzibar .
Currently the president ofZanzibar is from Zanzibar islands and the president of Tanzania also is from Zanzibar islands
Respectt to Zanzibar islands.
llyssa spent 3/8 of her money on a bag. she gave 2/5 of the remaining amount to her sister. What fraction of her money was left with?
Answer:
3/8
Step-by-step explanation:
After spending 3/8 of her money on a bag, she has 5/8 of the original amount of money left. As she gave 2/5 of the remaining amount of money to her sister, she gave 1/4 of the original amount of money to her sister (5/8 × 2/5 = 1/4). Therefore, there's only 3/8 (1 - 3/8 - 1/4 = 3/8) of the original amount of money left in her bag.
Julio earns $2 for 1/5 of an hour of work. How much does Julio earn in 1 hour of work?
Answer:
10 dollars
Step-by-step explanation:
he is racking in the money
Part B and #2 please 15 points
Answer:
See answers below
Step-by-step explanation:
Perimeter of a square = 4L
L sis the side length of the square
L = 5x^4y^2
perimeter = 4(5x^4y^2)
perimeter = 20x^4y^2
2) Length = 6x-10
Width = 4x+3
Area of rectangle = Length * Width
Area of rectangle = (6x-10)(4x+3)
Area of rectangle = 24x^2+18x-40x-30
Area of rectangle= 24x^2-22x-30
perimeter = 2(L+W)
perimeter 2(6x-10+4x+3)
perimeter = 2(10x-7)
perimeter = 20x-14
Hence the perimeter of the rectangle is 20x-14
Is 2.6 > 2.59? Help me asap. Also is 2.09 = 2.9? Here is some help by a pic
Answer:
2.6>2.59 - Yes
2.09=2.9- No
2 of 8
An object has a mass of 540 kg and a volume of 6 m3.
Find the density of the object in m3.
kg/m3
answer is 90Kg/m3
use this formula : Density = mass / volume
Which of the points shown below are on the line given by the equation y = 4x?
Check all that apply.
Answer:
its B and C
Step-by-step explanation:
Explain the steps for moving three disks from one peg to another. Start with moving the small disk to the right peg. (written response)
Answer: move the medium desk to the left peg. Move the small desk to the left peg. Move the large desk to the right peg. With the small disc to the middle peg. Move the middle desk to the right peg. With the small desk to the right peg.
Step-by-step explanation:
Answer:
Move the medium disk to the left peg.
Move the small disk to the left peg.
Move the large disk to the right peg.
Move the small disk to the middle peg.
Move the middle disk to the right peg.
Move the small disk to the right peg.
Step-by-step explanation:
Identify the cross section that results from slicing the three-dimensional figure.
A)
prism
B)
rectangle
square
D
triangle
answer is b
Answer:
b
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
i thing bbbbbbbbbbbbb