Answer:
The point estimate used was of $69,821.
The error bound is of $101.
Step-by-step explanation:
A confidence interval has two bounds, a lower bound and an upper bound.
A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.
The error bound is half the difference between these two values.
In this question:
90% confidence that the mean household income in the U.S. falls between $69,720 and $69,922.
Point estimate:
(69720+69922)/2 = 69821
The point estimate used was of $69,821.
Error bound:
(69922 - 69720)/2 = 101
The error bound is of $101.
A cylindrical fuel storage tank has a diameter of 19 feet. Determine the capacity of the tank, if its height is 34 feet. (use = 3.14)
Answer:
The tank capacity is 9,635.09 square feet.
Step-by-step explanation:
Given that a cylindrical fuel storage tank has a diameter of 19 feet and a height of 34 feet, the following calculation must be performed to determine the capacity of the tank, knowing that the volume of a cylinder arises from the following formula = π x r² xh:
Radius = 1/2 diameter
3.14 x (19/2) ² x 34 = X
3.14 x 9.5² x 34 = X
3.14 x 90.25 x 34 = X
3.14 x 3,068.5 = X
9,635.09 = X
Therefore, the tank capacity is 9,635.09 square feet.
Kevin earns $306.25 each week at his job. He is paid $8.75 per hour. How many hours does Kevin work each week?
Answer:
35 hours/week
Step-by-step explanation:
306.25/8.75 = 35
An American football field is 20 yards longer than a soccer field. An American football field is 120 yards long. How long is a soccer field? Circle the correct answer.
Answer:
A soccer field is 100 Yards.
Step-by-step explanation:
120-100=100yds.
The lowest point in a business cycle, which follows a period of economic
decline, is called a(n)
A. trough
B. contraction
C. peak
D. expansion
The lowest point in a business cycle, which follows a period of economic
decline, is called a trough. Therefore, option A is the correct answer.
What is a period of economic decline?A prolonged period of weak or negative real GDP (output) growth that is accompanied by a noticeably higher unemployment rate is known as a recession. During a recession, a lot of other economic activity indices are similarly weak.
Trough: This refers to the stage of the business cycle when economic activity is at its lowest point.
Expansion: It denotes the period following a dip when overall demand rises. It leads to a rise in output and a decrease in unemployment.
In the business cycle, expansions and contractions alternate (also called recessions).
Recessions frequently begin at the business cycle's high, when an expansion comes to an end, and finish at its trough, when the following expansion starts.
Therefore, option A is the correct answer.
Learn more about a period of economic decline here:
https://brainly.com/question/4065260.
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Please help meeeeeeeeeew
In the quadratic function y = ax^2 + bx + c, the ___________ affects the width of the parabola.
b
c
a
bx
Answer:
the answer is the a affects the width
Step-by-step explanation:
the answer is a not the choice A, the third one
(i hope this help)
Rewrite without absolute value sign.
|x+12| if x>-11
bro I promise if someone reports this for no reason or send a malware link that i can scan ima hack u
Answer:
"hack you" lol answer is 22in
Step-by-step explanation:
the base of the pyramid is 100in^2
so the rest of the surface area is 440
formula for a triangle area is A=1/2bh
1 of the triangles is 110 440/4
110=1/2*10*h
110=5*h
h=22
Question 6 of 10
An arithmetic sequence has this recursive formula:
12 = 7
1a = 8-1-4
What is the explicit formula for this sequence?
A. an = 7+ (n-1)(-4)
B. a, = (-1) + (n - 7)(-4)
C. an = -4 + (n-1)7
D. an = 7 + (n - 4)(-1)
please answer !!!
Answer:
It's A
Step-by-step explanation:
I've already done this!
help :( math for 8th
Answer:
She should add 10x to both sides
Step-by-step explanation:
Answer:
Step-by-step explanation:
x² - 10x - 2 = 0 {Add 2 to both sides}
+2 = +2
x² - 10x = 2
Now to find what to add both sides, divide the co-efficient of x by 2
10/2 = 5
Add 5² to both sides
x² - 10x + 25 = 5²
(x - 5)² = 5²
Take square root both sides,
x - 5 = ± 5
x- 5 = 5 ; x - 5 = -5
x = 5+5 ; x = -5 + 5
x = 10 ; x = 0
Find the equation of a circle whose center is at (8, -3) and radius 6.
Answer:
[tex] { (x - 8)}^{2} + {(y + 3)}^{2} = 36[/tex]
Samira is playing a game with the spinner shown.
What is the theoretical probability that the pointer will land in a section labeled with the letter J?
Answer:
2/10 or 1/5
Step-by-step explanation:
there are 10 equal 'slices'
then count those with a J
that would be 2
The sum of two number is 12 and there product is 27 find the number,let the number be X and Y
Answer:
the answer is 3 and 9
Step-by-step explanation:
(x for 3 and y for 9)
3 + 9 = 12 and 3×9= 27
What’s the difference between 1,968 and 3,000? Check your answer using inverse operations.
A. 1,032
B. 1,042
C. 1,031
D. 1,132
Answer:
A. 1,032
Step-by-step explanation:
3,000 - 1,968 = 1,032
1,968 + 1,032 = 3,000
Answer:
A is the correct answer
Step-by-step explanation:
300O-1968 = 1032
What are possible values for m and n? 3^m • 3^n = 3^-2
PLS HELPP THUS IS DUE IN LIKE A FEW MINS
A cycle wheel has a diameter of 56 cm.
17 Calculate the circumference of the
wheel.
278 Find the distance covered in 100 revo-
lutions.
Formula for circumference is C= πd, meaning pi multiplied by diameter. I will complete the question using both 3.14 for pi, and the pi key on the calculator, as I am not sure what the rules are for your mathematics class.
Formula C=πd, where diameter (given: 56) is 56 and pi is 3.14.
C=πd
= 3.14 x 56
=175.84
∴ The circumference of the wheel is about 175.8cm.
To find how much distance covered in 100 revolutions, we must multiply the distance covered in one revolution by 100.
175.84 x 100= 17584
The question does not ask to convert to meters or kilometers so I may leave it like this.
If you are told otherwise, follow the rules for converting.
∴ The distance covered in 100 revolutions is 17,584cm.
Formula C=πd where d equals 56 and pi is the full value of pi (3.1415926....)
C=πd
= π x 56
=175.929
As you can see, we get a more accurate answer, but again, it is all up to your class rules.
∴ About 175.93 cm circumference
Revolutions:
175.93 x 100 = 17593
∴ About 17, 593cm.
I hope this helps!
Mouza, Alreem, Latifa, Zayed and Mohammed are
running around their school playground.
1 lap of the school playground is 300 m.
Mouza runs 3 laps.
How far does she run?
Answer:
900m
Step-by-step explanation: if one is 300m then do 300m x 3 =900m.
Hoped this help
Alternate exterior angles are congruent.
Which angle forms a pair of alternate
exterior angles with angle 1?
Answer:
Angle 8 forms a pair of alternate exterior angles with angle 1.
Help plz ahhh plz pretty plz
Answer: 158 as area and perimeter 62
Step-by-step explanation:
special right triangle desmo
9514 1404 393
Answer:
x = 15√3
y = 30
Step-by-step explanation:
In a 30°-60°-90° "special" triangle, the ratios of side lengths are ...
1 : √3 : 2
Your diagram shows the short side is 15, so the other sides can be found by multiplying the above ratio numbers by 15.
1 : √3 : 2 = 15 : x : y = 15 : 15√3 : 30
x = 15√3
y = 30
Find the measure of < 1.
9514 1404 393
Answer:
92°
Step-by-step explanation:
∠1 is an "alternate exterior angle" with the one marked 92°. Alternate exterior angles are congruent, so ...
∠1 = 92°
sarah buys a pair of shoes for $25 plus 8% tax. Hilary buys a shirt for $30mplus an 8% tax. What is the difference in the amount sarah and hillary paid, including tax?
Answer:
5.4
sarah = 27
Hilary = 32.4
Step-by-step explanation:
25(.08)+25=27
30(.08)+30= 32.4
32.4-27=5.4
HELP PLEASE I NEED THIS TO PASS
Answer:
X=45
Step-by-step explanation:
X=180-[60+75]=45
answer: the sum of all the sides of a triangle=180
75+60+x=180
135+x =180
x =180-135
x = 45
if the volume is 56 in the length is 4 in and the width is 7 in what is the height of the rectangular prism
Answer:
2
Step-by-step explanation:
lxwxh
7x4=28
56/28=2
find the volume of this cylinder.
give your answer to 1 decimal place.
Answer:
≈5089.3801 (5089.4)
Step-by-step explanation:
the formula is πr^2 x h
so, V=πr2h=π·92·20≈5089.3801
Answer:
Step-by-step explanation:
6089.9
Find the error in this question? log 45 - log 9 = log 45/log 9
Answer:
Step-by-step explanation:
Find the error in this question? log 45 - log 9 = log 45/log 9
log 45 - log 9 = 45 / 9 = 5
Math work please help!!!
Answer:
your answer is 62°
I hope it's helps you
The name for the expression 3/13 is:
radical
radicand
radical sign
index
Answer:
Radical.
Step-by-step explanation:
To explain;
3√13 is a radical.
The 3 in this expression is known as the index.
The 13 in this expression is known as the radicand.
The √ is considered the radical sign.
The given expression is the radical sign.
The given expression is [tex]3\sqrt{3}[/tex].
What is the square of the number indicates?The √ symbol is used to denote square root or nth roots. Radical Expression - A radical expression is an expression containing a square root. Radicand - A number or expression inside the radical symbol.
Therefore, the given expression is the radical sign.
To learn more about the radicals visit:
https://brainly.com/question/12737007.
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if a square has breath of 13 cm what would be the lenght and perimeter ?
Answer:
The square will have length 13 cm only and it's perimeter will be:
4l
4×13cm
52cm
I hope it helps you
PLEASE HALP MAH! The dot plots below show the test scores of some mathematics students and some science students: Two dot plots are shown one below the other. The top and the bottom plots have the title Mathematics Students and Science Students respectively. Below the line for each dot plot is written Mark. The markings on each line are from 30 to 50 at intervals of 1. For the top plot there are two dots each for 34 and 40 and 1 dot each for 32, 33, 35, 37, and 39. For the bottom plot there are 2 dots each for 43, 46 and 49 and 1 dot each for 41, 42, and 47. Based on visual inspection of the dot plots, which group of students appears to have the larger average score? The mathematics students The science students Both groups are similar. Not enough information is available to draw a conclusion.
Answer:
d
Step-by-step explanation:
Answer: d not enough information is available to draw a conclusin
Step-by-step explanation: