It equals 5- hope this helps---
ata were collected on the amount spent by customers for lunch at a major Houston restaurant. These data are contained in the file Houston. Based upon past studies the population standard deviation is known with . Click on the datafile logo to reference the data. Round your answers to two decimal places. Use the critical value with three decimal places. a. At confidence, what is the margin of error? b. Develop a confidence interval estimate of the mean amount spent for lunch. to
Answer:
The sample is calculated by adding the samples and dividing by the number of sample size.
X ± 2.58(6$)/√64
Step-by-step explanation:
Given:
Data were collected by 64 customers for lunch.
Based on past studies, the population standard deviation is known with =∂= $6
a) At 99% confidence
By using given information,
∂= $6, n= 64,
At 99% confidence, the value of z = 2.58
By using formula of margin error:
ME=za/2 ∂/√n
= 2.58 $6/√64
= 15.48/8
=1.935
b) Find the 99% confidence interval for mean amount spent on lunch?
By using given information:
∂= $6, n= 64,
At 99% confidence, the value of z = 2.58
By using the formula:
X ± z∂/√n
Where x is the sample means, z is the %99 confidence level, which is equal to 2.58
The sample is calculated by adding the samples and dividing by the number of sample size.
X ± 2.58(6$)/√64
B
Which of the following regions is best described as hot and
humid with low elevations?
Answer:
Region C
Step-by-step explanation:
hdisoa.ahdid zks9nsbwjama
Answer:
B
Step-by-step explanation:
The gulf coast has low elevations and Has humid climate
Please help! file attached
Answer: 2x^2 - 4x - 2 (first option)
Step-by-step explanation:
To solve (3x^2 + x -3) - (x^2 - 5x + 1), first you have to simplify it. you would put 3x^2 and - x^2 together, x and -5x together, and -3 and 1 together. This simplifies to 2x^2 - 4x - 2. Hopes this helps
Hunter invested $580 in an account paying an interest rate of 4.6% compounded monthly. Assuming no deposits or withdrawals are made, how much money, to the nearest dollar, would be in the account after 19 years?
Answer: 1388
Step-by-step explanation:
The formula for the amount earned with compound interest after n years is given as:
A = P [tex](1 + R/n)^{nt}[/tex]
P = principal
R = rate
t = time in years
n = number of times compounded in a year.
The amount in the account after 19 years is $1388.
What is compound interest?It is the interest we earned on the interest.
The formula for the amount earned with compound interest after n years is given as:
A = P [tex](1 + R/n)^{nt}[/tex]
P = principal
R = rate
t = time in years
n = number of times compounded in a year.
We have,
P = $580
R = 4.6%
n = 12 ( compounded monthly)
t = 19 years
Now,
Convert R as a percent to r as a decimal
r = R/100
r = 4.6/100
r = 0.046 rates per year,
Now,
A = P [tex](1 + R/n)^{nt}[/tex]
A = 580 [tex](1 + 0.046)^{12\times19}[/tex]
A = 580 [tex](1.0046)^{228}[/tex]
A = $1,387.64
Rounding to the nearest dollar we get,
A = $1388
Thus,
The amount in the account after 19 years is $1388.
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please help, I dont know where to start
Answer:
16 ft
Step-by-step explanation:
The circumference of a circle is given by
C = pi d
where d is the diameter
50.24 = 3.14 *d
Divide each side by 3.14
50.24/ 3.14 = 3.14d/3.14
16 = d
What is the sum of 7/12 + 4/5
83/60
Step-by-step explanation:Hi there !
⁵⁾7/12 + ¹²⁾4/5 =
= 35/60 + 48/60
= (35 + 48)/60
= 83/60
Good luck !
Write an expression for the area of the figure.
Area of A = [tex]8 \cdot 2x = 16x[/tex]
Area of B = [tex]8 \cdot x = 8x[/tex]
Area of shape = Area of A + Area of B = [tex]16x + 8x[/tex]
The area of the figure can be given from the expression 24x
What is the Area of a Rectangle?
The area of the rectangle is given by the product of the length of the rectangle and the width of the rectangle
Area of Rectangle = Length x Width
Given data ,
The entire figure can be split into 2 figures of different length and width
Let the top figure be A and the bottom figure be B
So , Area of the figure = Area of A + Area of B
Now , the Length of B = 16
Width of B = x
Area of B = Length of B x Width of B
So , Area of B = 16x
And from figure , we can conclude that
Length of A = 16 - 8
= 8
And Width of B = x
Area of B = Length of B x Width of B
So , Area of B = 8x
Therefore , total area of figure = Area of A + Area of B
= 16x + 8x
= 24x
Hence , the area of the figure is 24x
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Find the area of the figure. (Sides meet at right angles.)
5 cm
5 cm
3 cm
B cm
5 cm
5 cm
5 cm
15 cm
Answer:
60 cm
Step-by-step explanation:
there's alot of ways you can split up the shape but
15x2=30
5x3=15
5x3=15
30+15+15=60
Answer:
60 cm²
Step-by-step explanation:
divide the shape into smaller shapes, calculate the area for those small shapes, and then add them up.
Select all input values for which g(x) = 8.
Choose all answers that apply
A. x=-4
B. x=6
C. x=9
D. None of the above
Answer:
D
Step-by-step explanation:
I think so..............
Evaluate C(7,5) please
Answer: 21
Step-by-step explanation: This is a combination of 7 objects taken 5 at a time
nCr = n! / r! * (n - r)!
7C5 = 7! / (5! (7-5)!)
= 7! /(5! 2!)
= (7*6*5*4*3*2*1)
-----------------------
5*4*3*2*1 * 2*1
Canceling
= 7*6/ (2*1)
= 21
identify the class width,class midpoints, and class boundaries
Answer:
I NEED HELP WITH THIS ONE TO
Step-by-step explanation:
Please help giving out brainliest
6(5-3n)-6n=-90
Answer:
n = 5
Step-by-step explanation:
I think you know the rest
Determine the slope between the following two points?
(2,-9) and (-1,0)
Answer:
if you are looking for an equation then it is y = -3x – 3
Step-by-step explanation:
What is the LCD of 1/2 and2/17
Answer:
the answer would be 34
Step-by-step explanation:
Rewriting input as fractions if necessary:
1/2, 2/17
For the denominators (2, 17) the least common multiple (LCM) is 34.
LCM(2, 17)
Therefore, the least common denominator (LCD) is 34.
Calculations to rewrite the original inputs as equivalent fractions with the LCD:
1/2 = 1/2 × 17/17 = 17/34
2/17 = 2/17 × 2/2 = 4/34
What is a slope for a line that is perpendicular to the line y = -5x + 4
Answer:
1/5
Step-by-step explanation:
Take opposite reciprocal of the original slope.
Lynn plotted point G, 3 units to the left and 2 units above point F. Where did lynn plot point G?
Answer:
[tex]G = (2,6)[/tex]
Step-by-step explanation:
See Attachment for Complete Question
From the attachment, we can see that F is plotted at
[tex]F = (5,4)[/tex]
On the x axis, G is 3 units to the left;
And on the y axis, G is 2 units above
So, the coordinates of G is calculated as:
[tex]G = (5-3,4+2)[/tex]
[tex]G = (2,6)[/tex]
Hence:
G is plotted at (2,6)
Find the sum
2/3 + [-1/3]
Answer:
1/3
Step-by-step explanation:
2 - 1 is 1
Denominator stays the same
Answer:
1/3
Step-by-step explanation:
when adding and subtracting fractions you need to make sure there is a common denominator (same number on the bottom of the fractions). luckily these fractions already have that so you just add them! when they have a common denominator the number stays the same. so 3+3 in this equals 3 lol
2+(-1) = 1
A diver needs to descend to a depth of 100 feet below sea level. She wants to do it in 5 equal descents. How far should she travel in each descent
Answer:
She needs to descend 20 feet per descent.
Step-by-step explanation:
100/5 = 20
use the following functions: yf(x) = 3x - 7
g(x) = 2x - 4
1. Find (f + g)(x).
2. Find (f - g)(x).
Answer:
(f + g) (x) = 5x - 11
(f - g) (x) = x + 3
Step-by-step explanation:
f(x) = 3x - 7
g(x) = 2x - 4
to find ; (f + g) (x) and (f - g) (x)
now,
(f + g ) (x) = f (x) + g(x)
= (3x - 7) +( 2x - 4 )
= 3x - 7 + 2x - 4
= 5x - 11
again ,
(f - g ) (x) = f(x) - g(x)
= (3x - 7) - (2x - 4)
= 3x - 7 - 2x + 4
= x + 3
Which of the following statements about the function cannot be used to conclude that is defined at x = 1?
a) lim x—>1 f(x) exists
b) f is continuous at x = 1
c) f is differentiable at x = 1
d) the line tangent line to the graph of f at x=1 exists
a) [tex]\lim_{x \to 1} f(x)[/tex] exists
As the limit of a function at any certain point can exist, but the function itself may be not defined at that point.
For example, if [tex]f(x) =\frac{ (x^3 - 1) }{(x - 1)}[/tex], then [tex]\lim_{x \to 1}\frac{(x^3 - 1)}{ (x - 1)} = 3[/tex],
So, here f(1) is undefined as there is a hole in the graph of the function f(x) at the point (1,3).
Therefore the correct statement about the function cannot be used to conclude that is defined at x = 1 is [tex]\lim_{x \to 1} f(x)[/tex] exists.
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On a coordinate plane, points (1, 2), (3, 6), and (5, 10) are plotted. Which characteristics tell you that this graph shows a proportional relationship? Check all that apply. Three points are on the graph. A straight line can be drawn through the points. The ordered pairs all have the same x- and y-values. The line connecting the points passes through the origin.
Answer:
B and D are the answers hope it help
Step-by-step explanation:
Answer:
B and D
Step-by-step explanation:
Marta and Guadalupe are saving for a car. Marta has $500 in her bank account when Guadalupe opens a bank account with zero dollars. Marta deposits $75 into her account each week for x weeks. Guadalupe deposits $95 into her account each week for x weeks. These accounts do not earn interest. Which inequality represents this situation when the amount of money in Guadalupe’s account is greater than the amount of money in Marta’s account? 75x 500+75x 75x>500+95x 95x<500+75x
Answer:
It's 95x > 500 + 75x
Step-by-step explanation: I took the test
For questions 5 – 6, use the following functions:
f(x) = 5x2 + 3
g(x) = x2 - 7
5. Find (f + g)(x).
6. Find (f - g)(x).
Answer:
5.6x2-4
6.4x2+10
Step-by-step explanation:
Answer:
5) (f+g)(x) =f(x) +g(x)
[5x^2-3] + [x^2-7]
6x^2 - 4
6) (f -g)(x) = f(x) +g(x)
[5x^2-3] - [x^2-7]
5x^2-3-x^2+7
4x^2+10
Find the slope of the line that passes through the points (1,-4) and (3,-1).
Answer:
The answer is
[tex] \frac{3}{2} \\ [/tex]
Step-by-step explanation:
The slope of a line given two points can be found by using the formula
[tex]m = \frac{ y_2 - y _ 1}{x_ 2 - x_ 1} \\ [/tex]
where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
(1,-4) and (3,-1)
The slope is
[tex]m = \frac{ - 1 - - 4}{3 - 1} = \frac{ - 1 + 4}{2} = \frac{3}{2} \\ [/tex]
We have the final answer as
[tex] \frac{3}{2} \\ [/tex]
Hope this helps you
13.
How many cubes are needed to build the top level?
Answer:
7
Step-by-step explanation:
you count it 1, 2, 3, 4, 5, 6, 7. hope it helps
Answer:
7
Step-by-step explanation:
count
Which relation is also a function PLEASE HELP BRAINLIEST!!!!!!!!!!!!!!!!!!! PLEASE
Answer:
Step-by-step explanation:
What was it
To mix weed killer with water correctly, it is necessary to mix 18 teaspoons of weed killer with 3 gallons of water. How many gallons of water are needed to mix with the entire box if it contains 36 teaspoons of weed killerl
Answer:
6 gallons of water
Step-by-step explanation:
may I have brainlyest please
The GCD(a, b) = 9, the LCM(a, b)=378. Find the least possible value of a + b.
========================================================
Work Shown:
I'm assuming your teacher is applying the restriction that both 'a' and 'b' are positive integers.
L = LCM(a,b) = LCM of 'a' and 'b' = 9
G = GCD(a,b) = GCD of 'a' and 'b' = 378
L = (a*b)/G .... this shows how the LCM and GCD are connected
G*L = a*b
a*b = G*L
a*b = 9*378
ab = 3402
b = 3402/a
-------------------
a+b = a + (3402/a)
a+b = (a^2)/a + (3402/a)
a+b = (a^2+3402)/a
Replace 'a+b' with y. Replace every copy of 'a' with x. We get this equation
y = (x^2+3402)/x
Use a calculator or calculus to find that the lowest point occurs at the approximate location (x,y) = (58.3266662412, 116.6533325713)
Check out the diagram below. The graph was made with GeoGebra.
At this point we would stop since we found the lowest y value; however, keep in mind that 'a' and 'b' are integers. There is no way to have a+b add to the non-integer result 116.6533325713
---------------------
What we must do is look at a table of values where we see what integer x values lead to y being an integer as well. Those pairs are
x = 54, y = 117
x = 63, y = 117
Which are highlighted in the same diagram as the graph.
I restricted the table so that [tex]50 \le x \le 60[/tex] due to the lowest point found earlier having an x coordinate of roughly 58.3266662412
Based on what the table says, the smallest a+b can be is 117.
PLEASE HELP !!!
A bookstore had 90 copies of a magazine. Yesterday, it sold 1/3 of them. Today, it sold 3/5 of what remained. How many copies does the bookstore have left?
Answer:
12
Step-by-step explanation:
divide 90 by 3 then take that and divide it by 5 then multiply that by 3 then subtract that from the answer of 90 divide by 3
What is the solution to the equation 40= 2.5y?
Answer:
y = 16
Step-by-step explanation:
Given
40 = 2.5y ( isolate y by dividing both sides by 2.5 )
16 = y
