Write an equation that is equivalent to 1/4 plus 1 plus 3/4 minus 2/3 minus 1/2
Answer:1/4 + 1/4 = 1/2 = 0.5
Fewer young people are driving. In 1995, 63.9% of people under years old who were eligible had a driver's license. Bloomberg reported that percentage had dropped to in . Suppose these results are based on a random sample of people under years old who were eligible to have a driver's license in and again in . a. At confidence, what is the margin of error and the interval estimate of the number of eligible people under years old who had a driver's license in
Answer:
A. 0.0272
B. 0.0278
C. No
Step-by-step explanation:
a. Calculation for the margin of error and the interval estimate of the number of eligible people who had a driver’s license in 1995u
First step is to calculate the Standard error using this formula
Standard error(SE)= √(pcap * (1 - pcap)/n)
Where,
pcap represent sample proportion = 0.639
n represent sample size = 1200
Let plug in the formula
Standard error (SE)= √(0.639 * (1 - 0.639)/1200)
Standard error(SE)= 0.0139
Second step is to find Zc using this formula
Zc = Z(α/2)
Where,
α = 1 - 0.95 = 0.05
α/2 = 0.05/2 = 0.025
Zc = Z(α/2) = 1.96
Now let calculate the Margin of Error using this formula
Margin of Error= zc * SE
Let plug in the formula
Margin of Error = 1.96 * 0.0139
Margin of Error = 0.0272
Therefore the Margin of Error is 0.0272
b. Calculation for the margin of error and the interval estimate of the number of eligible people who had a driver’s license in 2016
First step is to calculate the Standard error using this formula
Standard error(SE)= √(pcap * (1 - pcap)/n)
Where,
pcap represent sample proportion = 0.417
n represent sample size = 1200
Let plug in the formula
Standard error (SE)= √(0.417 * (1 - 0.417)/1200)
Standard error(SE)= 0.0142
Second step is to find Zc using this formula
Zc = Z(α/2)
Where,
α = 1 - 0.95 = 0.05
α/2 = 0.05/2 = 0.025
Zc = Z(α/2) = 1.96
Now let calculate the Margin of Error using this formula
Margin of Error= zc * SE
Let plug in the formula
Margin of Error = 1.96 * 0.0142
Margin of Error = 0.0278
Therefore the Margin of Error is 0.0278
c. Based on the above calculation for both (a) and (b) the MARGIN OF ERROR are NOT the same reason been that (a) Margin of Error is 0.0272 while (b) Margin of Error is 0.0278 which simply shows that the proportion in parts (a) and are different.
Question
Is the statement below true or false?
A sampling error is the situation in which not all members of the population are equally likely to be selected.
Answer:
I think it's true sorry if I get it wrong
Answer: it is false, I hope this helps you out!
HELP THIS WAS DUE THREE DAYS AGO!!!!!!!!!!
Answer:
Step-by-step explanation:
2. 2c(7c + 1)
3. stays as is
4. 2x^3y^4(4 - 11x^2y^2)
5. ab(10ab + 9b - a)
6. 3m^2(7m^4n^2+2m^2n+5)
7. (a - 8)(a + 8)
8. (y - 17)(y + 17)
9. stays as is
10. (1 - 5n)(1 + 5n)
11. (4x - 7y)(4x + 7y)
12. (w^2 - 10)(w^2 + 10)
13. (c - 9d)(c + 9d)
14. (14a - b)(14a + b)
Geometry
please help if you can!
picture included
Answer:
x = 12.5
Step-by-step explanation:
Based on the interesting chords theorem, we would have the following:
2*x = 5*5
2x = 25
Divide both sides by 2
x = 25/2
x = 12.5
Show how you found the slope and y-intercept
Answer:
Slope: [tex]\frac{5}{2}[/tex]
y-intercept: 0
Step-by-step explanation:
First, find the slope. Use two points given to you. In this case, I will use the following:
(x₁ , y₁) = (2 , 5)
(x₂ , y₂) = (4 , 10)
Use the following equation:
slope (m) = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]
Plug in the corresponding numbers to the corresponding variables:
slope (m) = [tex]\frac{10 - 5}{4 - 2}[/tex] = [tex]\frac{5}{2}[/tex]
Note the slope intercept form:
y = mx + b
y = (x , y)
m = slope
x = (x , y)
b = y-intercept
Plug in the slope into m for the equation:
[tex]y = \frac{5}{2} x + b[/tex]
Choose a point to use to find b. In this case, I will use (2 , 5). Plug in 2 for x, and 5 for y:
[tex]5 = \frac{5}{2}(2) + b[/tex]
Simplify. Isolate the variable, b. Note the equal sign, what you do to one side, you do to the other:
[tex]5 = \frac{5}{2}(2) + b\\5 = 5 + b\\5 (-5) = 5 (-5) + b\\b = 5 - 5\\b = 0[/tex]
Y-intercept: 0
If Mario drives at a rate of 70 miles per hour, how long will it take him to drive 700 miles?
Answer:
dam mario u trying get a speeding ticket
bu the answer is 10 if im not mistaken
Step-by-step explanation:
Help and show work please
Answer:
11111111 111 1 1 1 11
Step-by-step explanation:
Answer:
ok 1+1= 25 and add 3000 and you get 1
Step-by-step explanation:
A customer's entire breakfast bill is $8. If the customer pays the server for the entire bill plus a 25% tip, what is total amount the customer pays?
A. $6
B. $10
C. $20
D. $32
Answer:
10
Step-by-step explanation:
what is the area of the figure above ?
Answer:
256m^2
Step-by-step explanation:
you can cut up the figure.
A1=bh
A1= 24x8
A1=192m^2
A2=bh
A2= bh
A2=8x8
A2=64m^2
A1+A2= Atotal
A=192+64
A=256m^2
Can someone helppp!!?
Answer:
angle 3 is 132
angle 2 is 48
Step-by-step explanation:
At a football stadium 5% of the fans in attendance were teens. If there were 400 teens at the football stadium what was the total number of people
Answer: 8000
Step-by-step explanation:
Each 5% is 400.
10%= 800
10x10= 100% therefore
800x10 =8000.
8000 total fans
What is 566.8 divided by 52
Step-by-step explanation:
Step 1
The first step is to set up our division problem with the divisor on the left side and the dividend on the right side, like we have it below:
5 5 2
Step 2
We can work out that the divisor (5) goes into the first digit of the dividend (5), 1 time(s). Now we know that, we can put 1 at the top:
1
5 5 2
Step 3
If we multiply the divisor by the result in the previous step (5 x 1 = 5), we can now add that answer below the dividend:
1
5 5 2
5
Step 4
Next, we will subtract the result from the previous step from the second digit of the dividend (5 - 5 = 0) and write that answer below:
1
5 5 2
- 5
0
Step 5
Move the second digit of the dividend (2) down like so:
1
5 5 2
- 5
2
Step 6
The divisor (5) goes into the bottom number (2), 0 time(s), so we can put 0 on top:
1 0
5 5 2
- 5
2
Step 7
If we multiply the divisor by the result in the previous step (5 x 0 = 0), we can now add that answer below the dividend:
1 0
5 5 2
- 5
2
0
Step 8
Next, we will subtract the result from the previous step from the third digit of the dividend (2 - 0 = 2) and write that answer below:
Please help me with this! Picture is provided and only answer is you know it!
Answer:
Option A
Step-by-step explanation:
Number of components assembled by the new employee per day,
N(t) = [tex]\frac{50t}{t+4}[/tex]
Number of components assembled by the experienced employee per day,
E(t) = [tex]\frac{70t}{t+3}[/tex]
Difference in number of components assembled per day by experienced ane new employee
D(t)= E(t) - N(t)
D(t) = [tex]\frac{70t}{t+3}-\frac{50t}{t+4}[/tex]
= [tex]\frac{70t(t+4)-50t(t+3)}{(t+3)(t+4)}[/tex]
= [tex]\frac{70t^2+280t-50t^2-150t}{(t+3)(t+4)}[/tex]
= [tex]\frac{20t^2+130t}{(t+3)(t+4)}[/tex]
= [tex]\frac{10t(2t+13)}{(t+4)(t+3)}[/tex]
Therefore, Option A will be the answer.
If f(x) = x + 2x - 3, what is the value of f(1 + 2)?
Answer:
6
Explanation:
substituting- f(x)= (1+2) + 2(1+2) -3
3 + 2(3)-3
3+6-3
=6
HOPE IT HELPS
I don't know how to do this, please help
Answer:
m7=80º
m8=100º
Step-by-step explanation:
Brandon has a points card for a movie theater. He receives 70 rewards points just for signing up. He earns 12.5 points for each visit to the movie theater. He needs 145 points for a free movie ticket. How many visits must Brandon make to earn a free movie ticket?
Answer: x=6
Step-by-step explanation:
Answer:
placeholder going to the bathroom brb
Step-by-step explanation:
The sum of 6 times a number and 4 is 9
Is x2+8x+16 a perfect square?
Answer:
yes, it's factors are (x+4)²
Step-by-step explanation:
Answer:
It is a perfect square.
Step-by-step explanation:
The reciprocal of 7/2 is 2/7. What does that mean?
Answer:2/7
Step-by-step explanation: A reciprocal is the "mirror image" of a fraction so the reciprocal is the fraction upside down.
A body starts from rest and
accelerates uniform at 5 ms2.
calculate the time taken
by the body to cover a
distance of
1km
Need help immediately! I can't do this it's way too hard and I don't get it because I missed class today! Someone, can you please do all of them for me?
Answer:
I cant see that pdf you attached maybe tell me what questoin you are asking?
1. Select all of the true statements.
A. Pi is the area of a circle of radius 1.
B. Pi is the area of a circle of diameter 1.
C. Pi is the circumference of a circle of radius 1.
D. Pi is the circumference of a circle of diameter 1.
E. Pi is the constant of proportionality relating the diameter of a circle to its circumference.
F. Pi is the constant of proportionality relating the radius of a circle to its area.
Which graph shows a dilation?
The solution to the following system of linear equations lies in which quadrant?
-2x + 3y = 8
4x + y=-2
Select one:
A. Quadrant I
B. Quadrant II
C. Quadrant III
D. Quadrant IV
Which one is the answer I think it’s four or five
Answer:
The answer is 4 (B)
Step-by-step explanation:
Hope this Helped
There are 20 pieces of fruit in a bowl and 8 of them are bananas. What percentage of the pieces of fruit in the bowl are bananas?
**choose your answer from the choices on Slide 5, but you must show how you got your answer on the chart, blank drawing space below, or explain in words**
m∠IJK=155° and m∠ZJK=35°. Find m/∠IJZ
What is the total surface area of the pyramid below?
5 ft
-
6ft
6 ft
Please I need answer!
Answer:
17 ft that's the ans
I don't know if it is correct
When 2 dice are rolled, find the probability of getting a sum greater than 8.
Answer: 10/36
When a pair of fair dice are rolled , the total possible cases are (6 × 6) = 36. Out of these 36 cases the following 10 cases are favors(giving the sum > 8) for the happening of the event . These 10 cases are (3, 6), (4, 5), (4, 6),(5, 4), (5, 5), (5, 6) , (6, 3), (6, 4), (6, 5), & (6, 6)
Step-by-step explanation:
6×6=36 possible outcomes and only 15 possible outcomes summing 8 or more than 8.
Since there are six possible outcomes, the probability of obtaining any side of the die is 1/6. The probability of rolling a 1 is 1/6, the probability of rolling a 2 is 1/6, and so on.