in a poll last year, the residents of a town were asked to rate the mayor on a scale of -10 to 10 points. The mayor received an average
approval rating of -2.5 points. This year, the mayor's average approval rating decreased by 0.75 points.
What is the mayor's average approval rating this year?
Enter your answer in the box.
Answers
Answer:
-3
Step-by-step explanation:
Related Questions
What sets of numbers does the square root of 3 belong to?
Answers
Answer:
irrational
Step-by-step explanation:
its a decimal that never ends or repeats and cant be accurately turned into a fraction, like pi
Solve this system of equations by
using the elimination method.
4x - 7y = 2
- 8x + 7y = -18
Answers
ILL MARK BRAINLIST , pls help n
Answers
Answer:
33
Step-by-step explanation:
[tex] {x}^{2} - 5x - 2 = 0 \\ \\ equating \: it \: with \\ a {x}^{2} + bx + c = 0 \\ we \: find : \\ a = 1 \\ b = - 5 \\ c = - 2 \\ \\ {b}^{2} - 4ac \\ = {( - 5)}^{2} - 4 \times 1( - 2) \\ = 25 + 8 \\ = 33 \\ \\ by \: quadratic \: formula \\ \\ x = \frac{ - b \pm \sqrt{ {b}^{2} -4ac } }{2a} \\ \\ x = \frac{ - ( - 5) \pm \sqrt{33}}{2 \times 1} \\ \\ x = \frac{ 5 \pm \sqrt{33}}{2}...(1) \\ \\x = \frac{ 5 \pm \sqrt{n}}{2}...(2) (given)\\ \\ equating \: equations \: (1) \: and \: (2) \\ \\ \huge \red{ \boxed{n = 33}}[/tex]
Carson's tablet has 2,000 videos. The play time for the videos is skewed to the right, with a mean of 135 seconds and a standard deviation of 25 seconds.
Part A: Can you accurately calculate the probability that the mean play time is more than 142 seconds for an SRS of 10 videos? Explain. (4 points)
Part B: If you take a random sample of 50 videos instead of 10, explain how the Central Limit Theorem allows you to find the probability that the mean play time is more than 142 seconds. Calculate this probability and show your work. (6 points)
Answers
Answer:
SEE BELOW
Step-by-step explanation:
A: Yes, it is 18.80%. Sample Mean= 135, Sample Standard deviation= 25/sq rt of 10 = 7.906, normalcdf(142, 999999, 135, 7.906) = .18796 × 100 = 18.796 = 18.80%
B: If we increase the sample size to 50, then, due to the Central Limit Therme, there should be less variation within the data (it should point to a more clear center). Sample Mean= 135, Sample Standard deviation= 25/sq rt of 50 = 3.535, normalcdf(142, 999999, 135, 3.535) = .02385 × 100 = 2.385 = 2.39%
The probability that the mean playtime is more than 142 seconds for an SRS of 10 videos is not accurately calculated and the probability that the mean playtime is more than 142 seconds is 0.0244.
Given :
The total number of videos on Carson's tablet is 2000.The mean is 135 seconds.The standard deviation is 25 seconds.A) The probability that the mean playtime is more than 142 seconds for an SRS of 10 videos is not accurately calculated because the sample size is too small due to which the central limit theorem cannot be applied.
B) According to the given data, the sample size is 50.
[tex]P(\bar{X}>142)=P\left(\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n} }}>\dfrac{142-\mu}{\dfrac{\sigma}{\sqrt{n} }}\right)[/tex]
[tex]P(\bar{X}>142)=P\left(Z>\dfrac{142-135}{\dfrac{25}{\sqrt{50} }}\right)[/tex]
[tex]P(\bar{X}>142)=P\left(Z>1.9798\right)[/tex]
Using the z table the above expression becomes:
[tex]P(\bar{X}>142)=0.0244[/tex]
For more information, refer to the link given below:
https://brainly.com/question/898534
Factor using GCF.
Show your work!
1) 36a + 18b - 27c
Answers
Find A ∩ (BC). A = {2, 3, 5, 8} B = {3, 5, 7} C = {2, 4, 8}
Answers
Answer:
A/5%=b-c+3-5%=d£&68+7-7'
Evaluate (x+40)/2^3 when x=8
Answers
Answer:
6. my bad is it wrong
Step-by-step explanation:
The percent of Tom’s budget he spends on different types of expenses is shown in the circle graph below. Tom’s total monthly budget is $2,500.
Tom's Expenses
Rent 30%
Savings 30%
Groceries 25%
Other 15%
How much does Tom spend each month on rent?
Answers
Answer:
$750
Step-by-step explanation:
rent is 30% of $2,500 Tom's total monthly budget.
30/100 x 2500 = 750
Jorge can travel 50 miles on his
motorized scooter using 1 gallon of gas.
How many miles can he travel using
8 gallons of gas?
Answers
Answer:
its c
Step-by-step explanation:
Answer:
400 miles
Step-by-step explanation:
50 miles.....1 gallon
x miles......8 gallons
50*8=400
what is a eqvilent fraction to 6/20
Answers
Answer:
310 is equivalent to 620 because 3 x 20 = 10 x 6 = 60. 930 is equivalent to 620 because 9 x 20 = 30 x 6 = 180. 1240 is equivalent to 620 because 12 x 20 = 40 x 6 = 240.
Step-by-step explanation:
Answer:
30%
Step-by-step explanation:
What's 6 divided by 20?
6/20 = 30
19. What is the diameter of circle C?
Сл
3
A. 234
B. 34
C. 4
D. 8
Answers
Answer:
8
Step-by-step explanation:
in right angle triangle
h^2=p^2+b^2
5^2=3^2+b^2
25-9=b^2
b=√16=4
radius=4
diameter=4×2=8
what goes into 27 and 48?
Answers
Answer:
Step-by-step explanation:
lets see
27=7*4=7*2*2
48=3*2*2*2*2
both numbers are divisible by 4
27/3=9, 48/3=16
Answer = 3
Please help me with this question! <3
Which set of coordinate pairs does NOT represent a linear function?
A.(−4, −12), (−3, −10), (−2, −8), (−1, −6)
B.(−4, −17), (−3, −10), (−2, 5), (−1, 2)
C.(1, −7), (2, −10), (3, −13), (4, −16)
D.(1, 1), (2, 4), (3, 7), (4, 10)
Answers
Answer:
c
Step-by-step explanation:
- 9(x + 3) = 27
Apply the Distributive Property and simplify.
Answers
-9
-9x-27=27
-9x = 54
X=6
What quadrant is (6, −7) in? Quadrant I Quadrant II Quadrant III Quadrant IV
Answers
Answer:
(6,-7) Would be in Quadrant IV
Step-by-step explanation:
helpppppppppppppppppppppp
Answers
Answer:
45 feet
Step-by-step explanation:
hi please help urgent question!!!
will give brainlist :>
Answers
Answer:
dont know sos
Step-by-step explanation:
PLEASE HELP MEEEEEEEEEEE
Answers
sorry if im wrong but im sure its c
A pack of pencils costs $1.25. The school secretary went to the store, bought some packs of pencils and spent $11.25. Which equation can be used to solve for how many pencils, p, she bought?
A. p+1.25=11.25
B. 11.25-p=1.25
C. 1.25p=11.25
D. 11.25p=1.25
Please answer quick
Answers
state the collision theory
Answers
Answer:
Collision theory, theory used to predict the rates of chemical reactions, particularly for gases. The collision theory is based on the assumption that for a reaction to occur it is necessary for the reacting species (atoms or molecules) to come together or collide with one another.
WILL GIVE BRAINLIEST!!!
Answers
Answer:
QR=11
Step-by-step explanation:
ILL MARK BRAINLIST , pls help n
Answers
Answer:
answer is b
Step-by-step explanation:
The box plots below show student grades on the most recent exam compared to overall grades in the class
which of the following best describes the information about the medians
1. the exam outlier at 60 makes the IQR narrower and the median higher
2. The class data is more evenly spread which pulls its medium down
3. The class median is lower than the exam median
4. The class Q3 is higher than the exam Q3
Answers
Answer:
3. The class median is lower than the exam median
Step-by-step explanation:
The median of the box plot is indicated by the vertical line that divides the box.
Thus, the Class median grade is about 80, while the Exam median grade is more than 80.
Comparing grades, this means that the class median is lower. than the exam median.
Therefore, "the class median is lower than the exam median" is the right information that describes the median.
Answer:
C- The class median is lower than the exam median
Step-by-step explanation:
i took test
Two sides of an obtuse triangle measure 12 inches and 14 inches. The longest side measures 14 inches.
What is the greatest possible whole-number length of the unknown side?
Answers
The Smith family made a 12-pound turkey for dinner. If each person will eat of a pound, how many
people will it take to finish the turkey?
Answers
Answer:
Step-by-step explanation:
12 pound turkey
one person eats 1 lb
12 people will eat 12 lbs
A diver is 25 feet below sea level. An airplane is 1,000 feet above sea level. What is the distance between the diver and the airplane?
Answers
Answer:
1025 Please Mark Me Brainliest
Step-by-step explanation:
write a word problem whose solution is $111
Answers
Answer:
Step-by-step explanation:
Word problem is a topic in mathematics that involves the interpretation of a given question with a mathematical expression so as to determine the value of the required variable.
Example: The price of a pencil is $10, and that of a ruler is $15.25. If Charles bought 5 pencils and 4 rulers, calculate the total amount of money spent.
price of a pencil = $10
price of a ruler = $15.25
Then,
cost of 5 pencils = $10 x 5
= $50
cost of 4 rulers = $15.25 x 4
= $61
Total amount of money spent by Charles = $50 + $61
= $111
The total amount of money spent by Charles is $111.
f(x) = 3(3x + 4)
The inverse
Answers
Answer:
Step-by-step explanation:
find the inverse of the function y=9x+12
To find the inverse function, swap x and y, and solve the resulting equation for x.
If the initial function is not one-to-one, then there will be more than one inverse.
So, swap the variables: y=9x+12 becomes x=9y+12.
Now, solve the equation x=9y+12 for y.
[tex]f^{-1}[/tex](x) = (x-12)/9
y=(x−12)/9
what is the square root of 724
Answers
Answer:26.9072480941
Step-by-step explanation:
If g(x)= x+1/X-2
and h(x) = 4 – x, what is the value of (gºf)(-3) ?
a. 8/5
b. 5/2
c. 15/2
d. 18/5