Using confidence interval concepts, it is found that the margin of error is of 7.
A confidence interval has the format (a,b).The margin of error is half the difference between the two bounds, that is:[tex]M = \frac{b - a}{2}[/tex]
In this problem, the interval is (32, 46), hence [tex]b = 46, a = 32[/tex], and the margin of error is:
[tex]M = \frac{46 - 32}{2} = 7[/tex]
The margin of error is of 7.
A similar problem is given at https://brainly.com/question/25704940
Answer:
Step-by-step explanation:
its 7 just did it
Using substitution, which value of x makes this equation true?
3+x = 10
A. 13
B. 7
C. -7
D. -13
Answer:
The answer is B. 7
Step-by-step explanation:
3 + x = 10
3 + 7 = 10
PLS HELP ASAP ITS AN EMERGENCY ITS DUE IN A FEW HOURS THANKS
Answer: -8
Step-by-step explanation:
-8+22=14
Has to be less than 14 so the value has to be less than -8
here is a list of numbers: 12, 13, 19, 16 ,32, 15, 13.a)work out the range of the numbers in the list.b)work out the mean of the numbers in the list
Answer: Mean: 17.14 Range: 20.
Step-by-step explanation: 12+13+13+15+16+19+32 25+13+15+16+19+32 38+15+16+19+32 53+16+19+32 69+19+32 88+32 120/7 17.14
32-12 20
Use an array and partial products to find
3 x 121.
3 x 100 = 300
3 x 20 = 60
3 x1= 3
300 +60 +3=363
so sorry if im wasting your time its just that i need help plsssssss im gonna fail so badly so help?
HELP ME HELP ME HELP ME!!! Given f(x) below, find f^-1(x).
Answer:
[tex]f^{-1}[/tex] (x) = 6 - 4x
Step-by-step explanation:
let y = f(x) and rearrange making x the subject
y = - [tex]\frac{1}{4}[/tex] x + [tex]\frac{3}{2}[/tex] ( multiply through by 4 to clear the fractions )
4y = - x + 6 ( subtract 6 from both sides )
4y - 6 = - x ( multiply through by - 1 )
- 4y + 6 = x
Change y back into terms of x with x = [tex]f^{-1}[/tex] (x) , then
[tex]f^{-1}[/tex] (x) = 6 - 4x
pls help asap MIDSEGMENTS
Answer:
Angle 5=60°
Step-by-step explanation:
Angle 4 = 180°-116° (adj angles on a str line)
= 64°
Angle 5 = 180°-64°-56° (angle sum of triangle)
= 60°
Answer:
<5 = 60 degrees
Step-by-step explanation:
<4 = 180-116 = 64 degrees
64 + 56 + <5 = 180 degrees
<5 = 180-56-64
Help me please!! :) :)
3х — бу - z = 3
4х +4y +z= — 1
X-2y – z = -1
Answer:
[tex]3x - 6y - x + 3 = =[/tex]
The Stock Market Nadia is a stockbroker. She earns 13% commission each week. Last week, she sold $5,300 worth of stocks. How much did she make last week in commission? If she averages that same amount each week, how much did she make in commission in 2011?
Answer:
34
Step-by-step explanation:
i don’t understand can I have help please
Answer:
(y + 1)³
Step-by-step explanation:
Answer:
y^3+3y^2+3y+1
Step-by-step explanation:
Factor the numerator and denominator to cancel the common factors.
(Whenever ^ is in the answer, it means that the number to the right of it is the exponent)
A piece of fabric for a quilt design is in the shape of a parallelogram. The base is 5 in
and the height is 4.3 in. What is the total area of the 23 parallelogram pieces needed for
the quilt?
Answer:
A =a l × w and then you solve the equation you get the answer
Answer:
494.5 square inches
Step-by-step explanation:
5 times 4.3 is 21.5
21.5 times 23 is 494.5
Divide $80 among three people so that the second will have twice as much as
the first, and the third will have $5 less than the second. Using an algebraic
equation, find the amount that each will get.
Answer: 19,38, and 33.
Step-by-step explanation:
80=2x+x+2x-5=5x=95=x=19
what is 2+3-4+6+22=
not that hard
Answer:
29
Step-by-step explanation:
Simplify 2+3 to 55-4+6+22
Simplify 5-4 to 1.1+6+22
Simplify 1+6 to 7.7+22
Simplify.29
someone please help me
Answer:
∡3 & ∡6 are same side interior angle.
∡4 & ∡6 are alternate interior angles.
∡2 & ∡8 are vertical angles.
∡1 & ∡5 are corresponding angles (because they are in the same spot).
∡1 & ∡3 are vertical angles (because they are the opposite angle of each other).
∡1 & ∡2 are supplementary angles (because they add up to 180°).
13- pls help with this pre-algebra problem is urgent
Answer:
What else is in the equation?
Step-by-step explanation:
Also, i think the - should be right here>-13 instead of it being here 13-<
A submarine is cruising at an elevation of
-250/3 meters below sea level, then
descends another 120% meters into the
sea. What is the new location of the
submarine?……NO LINKS
Answer:
Step-by-step explanation:
these are two different questions .
first i solve first
position of submarine= -250/3 meters below see level
height descended=120 % of 250/3=120/100 ×(250/3)=300,00/300=100 m
new location=-250/3+(-100)=-650/3 below see level.
2nd question
position of submarine=-250 2/3=-752/3 m below see level
height descended=120 5/8=965/8 m =-965/8 m below see level
new positin=-752/3+(-965/8)=-(6016+2895)/24=-8911/24=-371 7/24m below sesa level.
Why is math hard????
Answer:
It doesnt have to be, you are making it. It's really just addition multiplication divison and subtraction in different ways
Step-by-step explanation:
Answer:
BECAUES IT IS
Step-by-step explanation:
I don´t know
simplify.
remove all perfect squares from inside the square roots. assume x and y are positive.
√8x^3y^2
Answer:
[tex]2xy\sqrt{2x}[/tex]
Step-by-step explanation:
Because this is a whole term in itself (no addition or subtraction), you can just directly find squares and factor them out. First, when looking at 8, you can factor out 4, to get 2 on the outside. Then, while looking at x cubed, you can factor out x squared, to get x on the outside, and when looking at y squared, you can just pull that outside itself, to get y. Now, we have one 2 and one x remaining, for a total of [tex]2xy\sqrt{2x}[/tex]
Which ordered pair is a solution to
the equation
3x + 9y = 27 ?
Answer:
x=9-3y
Step-by-step explanation:
- Move the variable to the right & change its sign
3x + 9y = 27
- Divide both sides by 3
3x = 27 - 9y
- Write the solution x in parametric form
x=9-3y
- Solution:
x= 9-3y
а Ava and her children went into a movie theater and she bought $48 worth of drinks and candies. Each drink costs $4 and each candy costs $3. She bought 2 more candies than drinks. Graphically solve a system of equations in order to determine the number of drinks, x, and the number of candies, y, that Ava bought.
Answer:
x = 6
y = 8
Explanation and graph is given in picture
I hope it helps.
What’s the product of 2.6
Answer:
2×6=12
Step-by-step explanation:
pls help asap! i will mark brainliest!
Answer:
3
Step-by-step explanation:
2 x 7= 14 - 17= 3
What fraction of an hour is 15 minutes?
Give your answer in its simplest form.
Answer:
1/4
Step-by-step explanation:
15/60 = 1/4
Hello there! :)
15 minutes is 1/4 of an hour.
An hour is 60 minutes:
[tex]\frac{}{60}[/tex]
We have 15 minutes:
[tex]\frac{15}{60}[/tex]
Reduce your answer by dividing 15 and 60 by 15:
[tex]\frac{1}{4}[/tex]
Hope this helps!
~Just a determined gal
#CarryOnLearning
Please mark brainliest!!
[tex]Mysterious Nature[/tex]
what is the circumference of a circle with diameter 14-inches long
Answer:
the circumstance is 43.98
PLZ HELP ME WITH THIS ASAP
Answer: y= 9
Step-by-step explanation: x, y= 9
?.....helpp lolllll helpppp
Answer: the answer is F
Step-by-step explanation: the pictures that are used for the yearbook are added to the picture for the paper which results in 450, the 270 is on top because it’s the pictures for the yearbook
Find the product of (3x + 7y)(3x − 7y)
Answer:
9x^2 - 49y^2
Step-by-step explanation:
Answer: 9x^2 - 49y^2
Step-by-step explanation:
(3x + 7y)(3x − 7y)
9x^2 -21xy + 21xy - 49y^2
9x^2 - 49y^2
2/5 divided by 2/3 in simplest form
Answer:
[tex]\frac{3}{5}[/tex]
Step-by-step explanation:
When dividing by fractions, you can instead invert the fraction and multiply:
[tex]\frac{a}{b}\div\frac{x}{y} =\frac{a}{b} \times\frac{y}{x}[/tex]
To answer your question:
[tex]\frac{2}{5} \div\frac{2}{3} =\frac{2}{5} \times\frac{3}{2} =\frac{2\times3}{5\times2}=\frac{6}{10}=\frac{3}{5}[/tex]
help with this question
With some simplification,
cos⁻¹(x) - 5 cos⁻¹(x) - π/3 = 2π/3
becomes
-4 cos⁻¹(x) = π
or
cos⁻¹(x) = -π/4
However, the inverse cosine function has a range of 0 ≤ cos⁻¹(x) ≤ π, so there are no solutions to this equation.