We draw a random sample of size 36 from a population with the standard deviation 3.5. if the sample mean is 27, what is a 95% confidence interval for the population mean?
How can i use decimal models to add decimals?
Which of the binomials below is a factor of this trinomial? x^2-7x-44
Answer:
C. (x -11)
Step-by-step explanation:
The given trinomial is [tex]x^2 - 7x - 44[/tex]
Let's factor it. To find factor, we need to find the factors of -44 such that when you add them, we have to get -7
-44 = -11*4
- 7 = -11 + 4
so the correct factors are -11 and 4
Now we can write the middle term - 7x = -11x + 4x
[tex]x^2 - 7x - 44 = x^2 - 11x + 4x - 44[/tex]
Now let's group the first two terms and second two terms and factor it.
= x(x - 11) + 4(x - 11)
Here (x-11) is common factor, so we can take outside and rewrite.
= (x - 11)(x + 4)
So the factors are (x - 11) and (x + 4)
Answer is C. (x -11)
convert 220 from degrees to radians
The conversion of the given degrees 220° is equal to 11π/9 radians approximately.
To convert degrees to radians, use the following formula:
radians = degrees × (π / 180)
Let's apply this formula to convert 220 degrees to radians:
radians = 220 × (π / 180)
radians = 220π / 180
Now, to simplify the fraction, you can divide both the numerator and denominator by their greatest common divisor, which is 20:
radians = (220/20)π / (180/20)
radians = 11π / 9
Therefore, 220 degrees is equal to approximately 11π/9 radians.
learn more about degrees here
brainly.com/question/29117074
#SPJ6
What is the answer to. Write a polynomial equation with integer coefficients that has the given roots, x=7 and x=-5
how do you read this number. 7,654,321?
When solving for a system of equations, if you get an answer of 6=0, what does this solution mean regarding the solution to the system ?
To make lemonade, you used one gallon of water, four quarts of lemon juice, and 32 ounces of honey. How many quarts of lemonade did you make?
To make lemonade, using one gallon of water, four quarts of lemon juice, and 32 ounces of honey, you would make 34 quarts of lemonade.
Explanation:First, notice that gallons are larger than quarts. You are moving from a larger unit of measure to a smaller unit of measure. This means you will need to multiply. There are 4 quarts in a gallon, so your conversion factor is 4. Now, multiply. Take the given number of gallons and multiply by 4.
8(1/2) x 4 = (17/2) x (4/1) = 68/2 = 34
The answer is 8(1/2) gallons - 34 quarts.
What would you do isolate the variable in the equation below,using only one step?
X-3=7
Select the correct answer below.
A.add 7 to both sides
B. Subtract 3 from both sides of the equation
C.add 3 to the left, 7 to the right.
D.add 3 to both sides
if 152 divided by x equals 36 what would x be?
Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How many red beads does Noami have?
Taryn grandmother took her family out to dinner if the dinner was 74$ and Taryn dinner was 20% of the bill how much was Taryns dinner
Cookies are sold singly or in packages of 10
or 30
.
With this packaging, how many ways can you buy 60
cookies?
What is the value of 2 in 0.812
The place of the digit 2 in the decimal number will be hundredths place.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
The decimal number is the sum of a whole number and part of a fraction number. The fraction number is greater than zero but less than one.
The decimal number is given below.
⇒ 0.812
The place after the decimal starts from the tenths, hundredths, thousandths, and so on.
The place of the digit 2 in the decimal number will be hundredths place.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ3
All but two of the here amid’s built by the ancient Egyptians have faces inclined at 52° angles. Suppose an archaeologist discovers the ruins of a pyramid. Most of the pyramid has eroded, but the length of a side of the square base is 82 m. How tall was the pyramid, assuming it’s faces were inclined at 52°? Round your answer to the nearest meter.
A) 25m
B) 32m
C)52m
D) 105m
If f(x) = 2x2 + 1 and g(x) = x2 – 7, find (f + g)(x).
A. 3x2 + 8
B. 3x2 – 6
C. x2 – 6
D. x2 + 8
What is difference between 164 and 220
The difference between 164 and 220 is 56.
The difference between 164 and 220 is 56. In mathematical terms, you calculate the difference by subtracting the smaller number from the larger one:
220 - 164 = 56.
what is 4.333333333 as a fraction.
I need this answer right now!!
Use cos(t) and sin(t), with positive coefficients, to parametrize the intersection of the surfaces x^2+y^2=81 and z=5x^4.
Answer:
[tex]s(t)=(9 cost,9 sint , 32805 cos^4 t) , t\in (0,2\pi)[/tex]
Step-by-step explanation:
We are given that two surfaces
[tex]x^2+y^2=81[/tex]
and [tex]z=5x^4[/tex]
We have to find the parametrize the intersection of the given surfaces using cost and sin t with positive coefficient.
We know that intersection curve S(t) is given by
S(t)=(x(t),y(t),z(t)),[tex]t\in(0,2\pi)[/tex]
[tex]x^2+y^2=(9)^2[/tex]
Compare with the equation of circle [tex](x-h)^2+(y-k)^2=r^2[/tex]
Where (h,k) is center of circle and r is the radius of the circle.
The center and radius of given circle is (0,0) and 9.
[tex]x=9cost,y=9 sint[/tex]
because cost takes along x - axis and sin t takes along y- axis.
When we substitute these values then we get
[tex]81cos^2t+81sin^2t=81(cos^2t+sin^2t)=81 [/tex] ([tex]sin^2t+cos^2t)=1[/tex])
Hence, [tex]x=9 cost, y= 9sint [/tex]
Substitute the value of x in second equation of surface
[tex]z=5(9cost)^4=32805 cos^4t[/tex]
Hence, the intersection curve s(t) is given by
[tex]s(t)=(9 cost,9 sint , 32805 cos^4 t) , t\in (0,2\pi)[/tex]
one integer is 30 more than another integer if the difference between the larger and twice the smaller is 8 find the integers
Buford and Bobbie had a combined gross income of $154,900 in 2009. When filing their federal income tax return with the Married Filing Jointly filing status, they took the standard deduction of $11,400, claimed themselves as exemptions for $3650 each, and did not have any other adjustments to income. According to the following table, which income tax bracket did they fall into?
Answer:25%
Step-by-step explanation:
The sum of two numbers is 43 . The smaller number is 19 less than the larger number. What are the numbers?
By setting up a system of equations, we find that the larger and smaller numbers in question are 31 and 12, respectively. We solve for the larger number first and then use it to find the smaller number.
Explanation:To solve this problem, we can use variables to represent the two unknown numbers. Let's call the larger number x and the smaller number y. We have two pieces of information that can be turned into mathematical equations:
Now we can substitute the second equation into the first one to solve for x:
x + (x - 19) = 43
Simplifying the equation, we get:
2x - 19 = 43
Adding 19 to both sides gives us:
2x = 62
Dividing both sides by 2 gives us:
x = 31
Now that we have the value of x, we can find y:
y = 31 - 19
This gives us:
y = 12
Therefore, the larger number is 31 and the smaller number is 12.
Suppose that about 58% of the people who are murdered actually knew the person who committed the murder. suppose that a detective file in boston has 60 current unsolved murders. what is the probability that fewer than 32 victims did not know their murderer?
Final answer:
The probability that fewer than 32 out of 60 victims did not know their murderer can be found using the binomial probability formula, summing the probabilities where x ranges from 0 to 31 with a success rate of 42% for each trial.
Explanation:
To find the probability that fewer than 32 out of 60 murder victims did not know their murderer, given that 58% of victims did know their murderer, we can use the binomial probability formula. Considering that 42% (=100%-58%) of the victims did not know their murderer, we want the cumulative probability of x=0 to x=31 successes (victims not knowing the murderer) out of n=60 trials (total murder cases).
This can be calculated using a statistical program or a binomial probability table, as manually computing this would be time-consuming and complex. However, the specific steps would involve summing up the probabilities of all scenarios where the number of victims not knowing their murderer ranged from 0 to 31, factoring in the binomial coefficient, the probability of a single victim not knowing the murderer (42%), and its complement for each case.
Joy organized a wedding.
Guests had to choose their meal from beef, chicken or vegetarian.
1/3 of the guests chose beef
5/12 of the guests chose chicken
23 of the guests chose vegetarian
How many guests were at the wedding?
The only way to sober up after drinking is
The body metabolizes and eliminates alcohol at a fixed rate, which can only be sped up with time. Hydrating and eating food may make you feel better, but they do not speed up the process of becoming sober.
Explanation:The only way to sober up after drinking is to allow time for your body to metabolize and eliminate the alcohol. No amount of coffee, water, or food can speed up this process. The liver processes alcohol at a fixed rate, and it takes about one hour to metabolize one standard drink. Other factors such as sex, weight, and age can affect this rate, but ultimately, getting sober just takes time. While waiting to sober up, hydrating and eating food can make you feel better, but doesn't actually speed up the sobriety process.
Learn more about Sobering Uphttps://brainly.com/question/1204181
#SPJ6
heather has 500 dollars in her savings account she withdraws 20 dollars per week for gas write an eqaution heather can use to see how many week it will take her to have a balance of 220 dollars
a spool of ribbon has 18 feet on it. pieces measuring of 8 inches will be cut from the spool of ribbon. how many 8 inch segments will be cut from the spool of ribbon
show work
By dividing the total length by the length of the pieces, we conclude that we can make 2 of these pieces.
How many 8 inch segments will be cut?To get this, we need to divide the total length by the length of the desired pieces, and then round to the next (lowest) whole number.
Then we get:
N = 18ft/8ft = 2.25
Rounding to the next whole number we get 2, so we conclude that with 18t of ribbon we can make 2 pieces of 8ft each.
If you want to learn more about divisions.
https://brainly.com/question/1622425
#SPJ2
Joe tapped his maple tree to get syrup. The tree filled 3/4 of a cup in 1/2 hour.At what rate does syrup flow from the tree?
The rate of flow of syrup from the tree will be in mixed fraction form, equal to 1 1/2.
What are arithmetic Operations?The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.
Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.
As per the data mentioned in the question,
The amount of syrup obtained from the tree = 3/4 cup
The time is taken to fill 3/4 cup = 1/2 hour
Then, the rate of flow of syrup will be,
(3/4) ÷ (1/2)
3/4 × 2/1
= 6/4 = 3/2
It can also be written in mixed fraction form,
= 1 1/2
To know more about arithmetic operations:
https://brainly.com/question/25277954
#SPJ2
What does X equal?
15= x/6 - 1
Which expression represents the distance between −14.6 and −5.2 on the number line?
Answer:
9.4
Step-by-step explanation:
We are given that two integers -14.6 and -5.2
We have to find distance between -14.6 and -5.2.
Difference between =-5.2-(14.6)
Difference=-5.2+14.6=9.4
Distance is the absolute value of 9.4
Therefore,
[tex]\mid 9.4\mid =9.4[/tex]
Distance between -14.6 and -5.2 is 9.4