Answer:
Mean: =0.76
SD= (squarerootof) 0.76(0.24)/150
Step-by-step explanation:
The mean of the sampling distribution is 0.76 and the standard deviation is approximately 0.00344.
What is the standard deviation?The standard deviation mathematical and statistical analysis tool used to explain the diversity of treatments or values around the Mean is the standard deviation, which is also known as the square root of variance.
The mean of the sampling distribution of the proportion of US adults who believe that public libraries help them learn new things is equal to the proportion of all adults in the US who believe that public libraries help them learn new things, which is 76% = 0.76.
The standard deviation of the sampling distribution is equal to the standard error of the proportion, which can be calculated as follows:
standard error = √((76% × 24%) / 150)
= √((0.76 × 0.24) / 150)
= √(0.01824 / 150)
= √(0.0000121)
= 0.00344
Therefore, the standard deviation is approximately 0.00344.
Learn more about the standard deviation here:
brainly.com/question/14747159
#SPJ5
f(m)= 2m^6+ 4m + 6m+ + 7m² – 10m² - 8 at m=-2
Answer:
Step-by-step explanation:
2*( (-2)^6) = 128
4(-2) - 8
6(-2) -12
7(-2)^2 28
-10(-2)^2 -40
-8 -8
Total 88
Can anyone help me pls
Use the discriminant to determine the number of real solutions to the quadratic equation.
81d^2=18d+1=0
What is the number of real solutions?
Select the correct answer below:
0
1
2
The answer is 1
Use the discramnt formula
[tex] {b {}^{2} - 4ac } [/tex]
Where a is 81, B is 18, and c is 1
We get
[tex]18 {}^{2} - 4(81)(1)[/tex]
We then get 324-324=0
Which equal 0. Since the discramnt produce 0, the number of solution is one and repeated.
Christine is selling tickets at a museum. She knows that she has sold at least 40 tickets. The adult tickets
cost 14 dollars and the children’s tickets cost 12 dollars. If she knows she has sold no more than $720 worth
of tickets, what are the possible combinations?
Answer:
Adult tickets cost $80, children ticket cost $40
Step-by-step explanation:
Given data
let the number of adults be x
and the number of children be y
so
x+y= 40-------------1
The adult tickets
cost 14 dollars and the children’s tickets cost 12 dollars.
14x+ 12y= 720-------2
solve 1 and 2
x+y= 40
14x+ 12y= 720
from 1
x= 40-y
put this in 2 in place of x
14(40-y)+12y= 720
560-14y+12y= 720
collect like terms
-2y= 720-560
-2y= 160
y= -160/2
y= -80
put y= 80 in 1
x+80= 40
x= 40-80
x= -40
Hence Adult tickets cost $80, children ticket cost $40
Help&EXPLAIN
Don’t use for points or will be reported and I’ll take the points back
Answer:
x = 90
Step-by-step explanation:
A line will ALWAYS equal 180 degrees, so we know that one angle is <90 and we have to find x, which is the other angle of the line.
So, x + 90 = 180
You can either solve the equation for x or you can just subtract 90 from x, which is the easier way.
180 - 90 = 90
So, x = 90
I hope this helps, and explains it!
Which angle in Figure A'B'C'D' is equal to ZCDA?
O-ZD'A'B'
O ZA'B'C'
O ZB'C'D'
O ZC D'A'
please help me please or i'm gonna fail please please help please
Answer:
The Civil Rights Movement was a social movement in the U.S. that fought to end racial segregation and discrimination against African-Americans. While we continue to recognize the leaders of this movement and those who contributed, the men of the movement are far more celebrated and remembered than the women. In this informational text, Barrett Smith discusses the role that women played in the Civil Rights Movement.
Step-by-step explanation:
hope it helps I did this one and got it right
A scale drawing of Jacks living room is shown below. If each 2cm on the scale drawing equals 10 feet, what are the actual dimensions of the room. 4cm by 6cm
Answer:
Hope dis helps :> Have a great day
Step-by-step explanation:
Drawing : Actual
Scale
2 : 10
2 cm : 10 feet
Length
6 cm : 30 feet
Width
4 cm : 20 feet
The actual dimensions of the room are - Length=30 feet, Width=20 feet.
The answer is the second one.
What is the angle of elevation of the sun when a 42-ft mast casts 16 ft shadow?
thanks
Answer:
Heres how you do it
Step-by-step explanation:
10+2 =12 which means 72
Which linear inequality represents the graph below?
(0,4)
(2,4)
Answer:
c
Step-by-step explanation:
slope of red line=(-4-4)/(2-0)=-8/2=-4
eq. of red line is y-4=-4(x-0)
y=-4x+4
put x=0,y=0
0=0+4
which is true if 0<4
so y<-4x+4
The linear inequality represents the graph fr the coordinates (0,4), (2,-4) is y < -4x + 4.
What is linear inequality?Expressions with linear inequalities compare any two values using inequality symbols like "<", ">" , "≤" or "≥" These values could be either numerical, algebraic, or both.
Calculation for linear inequality shown by graph:
The coordinates of the straight line are (0,4), (2,-4).
Substitute the value in equation shown in option C.
y < -4x + 4
For points (0,4), put x = 0 and find y.
y < -4×0 + 4
y = 4 , which is satisfied.
Now consider points (2, -4)
Put x = 2 in the same equation and find y.
y < -4×2 + 4
y = -4 ( which again satisfies the given value for y)
Therefore, the equation y < -4x + 4 satisfies the points given for straight line.
To know, how to find equation of line for any point?, here
https://brainly.com/question/18831322
#SPJ2
Help me find the volume of the composite figure
Answer:
[tex]V = 97.911in^3[/tex]
Step-by-step explanation:
Given
Shapes: Cube and Cone
Required
Determine the volume
First we calculate the volume of the cube
[tex]V_1 = l^3[/tex]
Where
l = side length = 5.1
[tex]V_1 = 5.1^3[/tex]
[tex]V_1 = 132.651[/tex]
Next, calculate the volume of the cone using:
[tex]V_2 = \frac{\pi r^2h}{3}[/tex]
Where
h = 5.1
[tex]r = \frac{1}{2} * Diameter[/tex]
[tex]r = \frac{1}{2} * 5.1[/tex]
[tex]r = 2.55[/tex]
So, we have:
[tex]V_2 = \frac{\pi r^2h}{3}[/tex]
[tex]V_2 = \frac{\pi * 2.55^2 * 5.1}{3}[/tex]
[tex]V_2 = \frac{22 * 2.55^2 * 5.1}{7*3}[/tex]
[tex]V_2 = \frac{729.5805}{21}[/tex]
[tex]V_2 = 34.74[/tex]
The volume of the figure is:
[tex]V=V_1 - V_2[/tex]
[tex]V_1 = 132.651[/tex]
[tex]V = 132.651 - 34.74[/tex]
[tex]V = 97.911in^3[/tex]
True or False: If you are tossing three dice, ={2,3,4,5,6}
is an event in that sample space.
false
true
I think is true
Please let me know if it right
Yep me out please where can I found the value of x in the triangle at the right?
Point A is at (-2, 4) and point B is at (7,3).
What is the midpoint of line segment AB?
Answer:
(2.5,3.5)
Step-by-step explanation:
Omni calculator
Answer:
(2.5, 3.5)
Step-by-step explanation:
Hi can somebody pllsss tell me the answer
Answer:
choice 3
Step-by-step explanation:
Answer:
Fourth Option
Step-by-step explanation:
The perimeter of a shape is all sides added. So, if you do 2x + 2x + (x+1) + (x+1), you would get 6x+2. To get the answer to the question, you verify to see which one of the options equal to 6x+2.
First option:
2x(x+1) and 2(2x) + 2(x+1). You find what this equals. 2x(x+1) = 2x^2+2x so we can automatically elimate this one.
Second option:
2x(x+1) and 2x+2x+2x+1. Here again you see 2x(x+1) which equals 2x^2+2x and is not correct so we eliminate this.
Third option:
4x(2x+2) and 2x(x+1) + 2x(x+1). Once more you see 2x(x+1) but added to 2x(x+1) which would basically equal 2x^2+2x *2. Therefore, it's not this one.
Fourth option:
6x+2 and 2x+(x+ 1) +2x + (x+ 1). Now this one looks right because we already got 6x+2 and this is the only option that presents that but also because we initially solved 2x + 2x + (x+1) + (x+1) and this equals 2x+(x+ 1) +2x + (x+ 1).
I guess you don't really have to solve each of them you can kinda see and tell that the last one seems right but if you're not sure you should use the process above.
I hope this helped!
PLEASE HELP FUE NOW Marcie knows that the last number to her locker combination is a perfect square. Which of the following numbers might be the last number Marcie uses to open her locker?
8
ОО
36
24
2
Answer:
2! Cause the hint is that all of the options are her locker conbination! (I think it is)
Step-by-step explanation:
Answer:36
Step-by-step explanation:
6•6 is 36 perfect square
2.) (3x2 – 7x - 8) - (4x2 – 5x + 4)
I want the answer
Answer:
x^2 - 2x - 12
Step-by-step explanation:
Answer:
-4x^2 -2x -6
Step-by-step explanation:
If you can buy 4 containers of pudding for $4.20 how much can you buy for $9.45 math problem
Answer:
9
Step-by-step explanation:
4.20 / 4 = 1.05
105 x 9 = 9.45
What's the circumference of a
circle with a radius of 22 inches?
Use 3.14 for n.
Answer:
C
≈
138.23
in
Step-by-step explanation:
I hope it helped
What is the absolute value of -3.75
Answer:
the absolute value of -3.75 is 3.75
What is the value of x?
Answer:
x=2
Step-by-step explanation:
so u have 7 as the whole length.
and 5 of the 7 is filled
so u do this 7-5=2
23)
B
E
с
D
ntific
Ic
If ABCD is a square, what is mZAEB?
ght
A)
30°
ing
33
ols
B)
45°
60°
D)
90°
Answer:
90 degrees
Step-by-step explanation:
Step 1: State what is known
Notice that the 2 lines cut the square in half and create 4 congruant triangles. We know a full circle is 360 degrees and the intersection is a perfect circle formed by 4 angles. We can find the angle AEB by dividing 360 by 4 which gives you 90 degrees
A large animal vet travels 145 kilometers per day. How many miles does he travel? Round to the nearest mile
Answer:
90 miles.
Step-by-step explanation:
145 × 0.621 = 90 miles
1km = 0.621 miles.
What is the coefficient for x in the equation below?
7x + x = 14
a 7
b 1
c 2
d 10
all ratios equivalent to 5:1.
Answer:
10:2, 15:3, 20:4, etc.
Step-by-step explanation:
Well just keep going, they all simplify back to 5:1
The required equivalent ratios are,
[tex]10:2\\15:3\\20:4\\[/tex]
Equivalent Ratios:Equivalent ratios are the ratios that are the same when we compare them. Two or more ratios can be compared with each other to check whether they are equivalent or not.
For example, 1:2 and 2:4 are equivalent ratios.
The given ratio is,
[tex]5:1[/tex]
Now, as we know that we can convert the given ratio into fractions.
[tex]\frac{5}{1}[/tex]
Now, for finding the equivalent ratios multiply the same constant in both the numerator and denominator.
So, the required ratios are,
[tex]\frac{5\times2}{1\times 2} =\frac{10}{2}=10:2\\ \frac{5\times3}{1\times 3} =\frac{15}{3}=15:3\\\frac{5\times4}{1\times 4} =\frac{20}{4}=20:4\\[/tex]
And so, on.
Learn more about the topic Equivalent Ratios:
https://brainly.com/question/25465874
sketch the graph of 5x+7y=35, include the intercepts
Slope intercept form: y= −5 7 x+5
The graphing points would be (0,5)(7,0)
Answer:
Graph the line using the slope and y-intercept, or two points.
slope is 5 over 7
y-intercepts (0,5)
Step-by-step explanation:
Drag each tile to the correct box
Consider the graph of the function () = ?
Match each transformation of function to feature of the transformed function
asymptoteoly = 2
function decreases as x increases
terceptar )
interceptat (0,4
10) - (+ 2)
Answer:
g(x) = 2f(x) -------> y-intercept at (0,2)
h(x) = f(x)+2 -------> asymptote of y=2
j(x) = f(x+2) -------> y-intercept at (0,4)
m(x) = function decreases as x increases
From the graph that's given, the correct matching of the functions will be:
g(x) = 2f(x) --- y-intercept at (0,2)h(x) = f(x)+2 ---- asymptote of y=2j(x) = f(x+2) ---- y-intercept at (0,4)m(x) = function decreases as x increasesWhat is a function?It should be noted that a function simply means a relation between the inputs and the outputs.
A function from a set X to a set Y is vital in assigning to each element X exactly an element of Y.
Learn more about functions on:
https://brainly.com/question/10439235
Expand. Your answer should be a polynomial in standard form. (d^2+3)(d^2+2d+1)=(d 2 +3)(d 2 +2d+1)=left parenthesis, d, squared, plus, 3, right parenthesis, left parenthesis, d, squared, plus, 2, d, plus, 1, right parenthesis, equals
Answer:
A= d^4-d^2-6
Step-by-step explanation:
I have khan academy and the other answer is wrong
PLEASE ANWSER FAST IM TAKING A TEST!!
20 points!!!!
Answer:
the correct awnser is A
Step-by-step explanation:
HAVE A GOOD DAY!!!!!!
Answer:
Answer is A
Step-by-step explanation:
Mojave art club is selling t shirts for a fundraiser. A local company charges $35 to set up the logo and $4.25 per t shirt if x t shirts are printed by the business.
If the art club charged $10 per shirt how many shirts would need to be sold to cover their costs?
function C(x)=35+4.25x/x
Answer:
At least 7 shirts would need to be sold to cover their costs
Step-by-step explanation:
Cost of producing x t-shirts.
The cost of producing x t-shirts is a flat fee of 35 plus 4.25 per t-shirt. So
[tex]C(x) = 35 + 4.25x[/tex]
Earnings of selling x t-shirts:
Charges $10 per t-shirt, so it earns 10 for each t-shirt it sells.
[tex]E(x) = 10x[/tex]
How many shirts would need to be sold to cover their costs?
To cover the costs, we need that the earnings are equal or higher than the costs. So
[tex]E(x) \geq C(x)[/tex]
[tex]10x \geq 35 + 4.25x[/tex]
[tex]5.75x \geq 35[/tex]
[tex]x \geq \frac{35}{5.75}[/tex]
[tex]x \geq 6.09[/tex]
Since we cannot sell a decimal part of a shirt, at least 7 shirts would need to be sold to cover their costs