Step-by-step explanation:
a) For a 95% confidence interval we use the formula
First we need to establish the sample proportion
The sample size is
n = 200
and the critical value of z for a 95% confidence interval is
z* = 1.960
This gives us
This gives us an upper confidence limit of
.525 + .069 = .594 or 59.4%
and a lower confidence limit of
.525 - .069 = .456 or 45.6%
b) At this point her supporters wonder what her chances of winning are. 45.6% is below 50%, so she might lose. To find her chances of losing, consider the bell shaped curve
top
Her probability of winning is the area to the right of 50%. We need to turn the 50% into a z score
= -.708
We look up a z-score of -.71 in Table A and get an area of .2389. This is the probability that she will lose. the probability that she will win is
.7611
c) The candidate's supporters would like to be more sure that she will win. They decide to increase the sample size until the 95% confidence interval is only plus or minus 3%. They want to know how large of a sample they will need to get that kind of accuracy. We use the formula for the margin of error.
top
To solve for n, first square both sides to get rid of the radical.
Multiply both sides by n and divide both sides by m2.
For a 95% confidence interval z* = 1.96. We put in our other numbers
= 1064.4433
so they would have to survey 1065 people in order to get a 95% confidence interval that would only stretch up and down 3%.
top
Which expression is equivalent to
420d2 - 126d?
Answer:
42d(10d-3)
Step-by-step explanation:
Whats The Answer Marking Brainliest, Please explain your answer:D...
.........
Answer:
64
Step-by-step explanation:
The exponent of a number says how many times to use the number in a multiplication.
8 to the Power 2
In 82 the "2" says to use 8 twice in a multiplication,
so 82 = 8 × 8 = 64
In words: 82 could be called "8 to the power 2" or "8 to the second power", or simply "8 squared"
A car can travel 150 miles on 4 gallons of petrol. How far can it travel on 6 gallons?
Answer: The car can travel 225 miles on 6 gallons of petrol.
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Based on the containers and the items, the correct matches are:
Rate:
5 bottles for $5$1.00 per 16 ouncesUnit Rate:
$0.06 for 1 ounces 24 bottles per case 16 ounces per bottleNeither:
36 bottles What is the unit rate?The unit rate refers to the quantity per unit of the item in question. The quantity per case of bottles is 24 bottles and the cost per ounce for the item is $0.06.
Rate on the other hand shows the ratio between two items. For instance, one can get 5 bottles for $5 and one can get 16 ounces of the item for $1.00.
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how are u pls answer Me guys i will get a bad grade pls answer meeee
Answer:
i am great thank u how are u?
Step-by-step explanation:
Solve for v.
28-3v=4v
Simplify your answer as much as possible
V =
8. Two streets intersect at a traffic light, forming vertical angles. If the
measure of one of the angles formed by the intersecting streets is 78°,
what are the measures of the other three angles? Draw and label a
picture of the scenario. Show your work for how you found the missing
angles. (3 points)
The measures of the angles in the intersection are 78 degrees, 78 degrees, 102 degrees and 102 degrees
How to determine the measure of the three variables?The measure of one of the angles is given as 78 degrees
Represent this angle with x
So, we have
x = 78
Vertical angles are congruent angles
This means that
Vertical angle = x = 78
The other angles adjacent these angles are also congruent
And the measure of these angles is calculated using
y + x = 180
Substitute the known values in the above equation
So, we have
y + 78 = 180
Subtract 78 from both sides of the equation
So, we have
y + 78 - 78 = 180 - 78
Evaluate the like terms in the above equation
So, we have
y = 102
This means that the measure of the other angles is 102 degrees
Hence, the measures of the angles in the intersection are 78 degrees, 78 degrees, 102 degrees and 102 degrees
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an independent contractor charges $60 per hour. how many hours did the contractor work to make $42,720
9. If two complementary angles are in the
ratio 3:7, find the supplement of the
bigger angle.
Answer:
idk
Step-by-step explanation:
Complementary angles are pair angles with the sum of 90 degrees. We have Two complementary angles are in the ratio 3:7:
α = 3k
β = 7k
Then:
3k + 7k = 90°
10k = 90
k = 90/10
k = 9
The bigger angle is:
β = 7(9) = 63°
Two Angles are Supplementary when they add up to 180 degrees. Then the supplementary angle for β is:
x = 180 - 63°
x = 117° → ANSWER Please anyone help me Several friends went out
to eat lunch together.
Sharon offered to pay
1/3 of the total cost. If
the total cost was $46.
about how much
did Sharon pay?
Sharon offered to pay 1/3 of the total cost.
Total cost = $46
1/3 of $46 = [tex] \frac{1}{3} \times 46 = 15.33 \: (approx.)[/tex]
Answer:Sharon paid $15.33
Select the equation in point-slope form for the line that passes through the point (1, -1) and has a slope of 4.
Ay+ 1 = 4x - 1
B. y - 1 = 4x + 1
Cy-1 = 4(x + 1)
Dy+1 = 4(x - 1)
Answer:
D. y+1=4(x-1)
Step-by-step explanation:
look up point slope form equation
PLEASE ANSWER CORRECTLY! I WILL MARK BRAINLIEST! I really need an answer!
Dashawn solves the following system of equations using the elimination method.
3x−4y=36
5x+2y=8
What value does he correctly determine for x?
Enter you answer in the box.
x =
Help?ill give brainliest
Answer:
Step-by-step explanation:
1, 238.46 total money
- 975.00 money spent
-------------------
263.46
40+20+40+30= what is the answere to it
Answer:
Step-by-step explanation:
130
Answer:
130
Step-by-step explanation:
Indicate the answer choice that best completes the statement or answers the
question.
Which point is closest to 29 on the number line?
А
B
с
D
0
1
2 3 4 5 6 7 8
9 10
Oa. A
Oь. С
Oc.D
Od. B
Answer:
option d
Step-by-step explanation:
root of 29 = 5.39 (rounded)
in the line, point B is closest to that value.
Can someone please help me with proofs!
2) AE is congruent to EC, BE is congruent to ED (a bisector splits a segment into two congruent parts)
3) Angle AEB is congruent to angle DEC (vertical angles are congruent)
4) Triangle ABE is congruent to triangle CDE (SAS)
if akayla painted 1/3 of a wall in 20 minutes how long will it take her to paint 4 walls
Answer:
240 minute or 4 hours
Step-by-step explanation:
We can use a ratio to solve
1/3 wall 4 walls
------------- = ----------------
20 minutes x minutes
Using cross products
1/3 x = 20 *4
1/3 x = 80
Multiple each side by 3
1/3 x* 3 = 80*3
x = 240 minutes
Divide each side by 60 to change to hours
x = 240/60
x = 4 hours
I got a question sooo
Answer:
5x +2=17
I hope I helped have an amazingg day
a. when u and v are nonzero vectors, span{u,v} contains only the line through u and the line through v and the origin.
Span{u, v} contains the lines through u and v. But Span{u, v} also contains u + v which does not lie on either line.
A vector basic definition What is it?
A quantity or phenomena with independent qualities for both magnitude and direction is called a vector. The term can also refer to a quantity's mathematical or geometrical representation. Velocity, momentum, force, electromagnetic fields, and weight are a few examples of vectors in nature.False, If the vectors are said to span, then they encompass the area enclosed by au + bv, where a and b are real values. The line between u + v and the origin is a straightforward counterexample. This would be referred to as a plane via u, v, and the origin since it contains all possible combinations of u and v as well as multiples of each.Learn more about vector
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Write an equation for this relationship
Answer:
y=18.5x
Step-by-step explanation:
get 55.5/3=18.5
y=18.5x
habusbgsbiqnwksisnhsvqjuq
why you tube is not working
Which of the following graphs the equation.
Y=1/3x -2
Answer:
I don't know your answer options, but this is what the graph would look like:
**please mark brainliest!!
If ABCD is a rectangle, BD = 2x + 5 and AC = 7x - 40. Find the value of BE.
Answer:
AC = 23
BD = 23
Step-by-step explanation:
ABCD is a rectangle,
AC and BD are its diagonals.
Diagonals of a rectangle are congruent.
Therefore,
AC = BD
7x - 40 = 2x + 5
7x - 2x = 5 + 40
5x = 45
x = 45/5
x = 9
BD = 2x + 5 = 2*9 + 5 = 18 + 5 = 23
AC = 7x - 40 = 7*9 - 40 = 63 - 40 = 23
0.3 × 4.24
help plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Step-by-step explanation:
1.272
this is the answer
Answer:
1.272
Step-by-step explanation:
☺️☺️☺️☺️☺️☺️☺️
Brainliest for whoever gets this right
Answer:
it is 145 degrees.
Step-by-step explanation:
since the angle at the centre of an arc will be twice the angle produced at any point in the circle. hence double the angle of 35 will be 70. then reflex angle of it will give us 290. hence half of 290 is 145 degree.
Answer:
145 degrees
Step-by-step explanation:
Hope this helped have an amazing day!
Can someone help please, i really get confused with equations, please step by step explanation
Answer: PR equals 6x-2 and x=6.
Step-by-step explanation: Try drawing a diagram to better visualize this, add both the equations, (2x+5)+(4x-7). Be careful of the negative, distribute properly. You should get 2x+5+4x-7 which becomes 6x-2. And finally since they have a midpoint between, both equations are equal to each other. So 2x+5=4x-7. Which should give you x=6.
When changed to standard form, how many zeros will be after the seven?
1587 x 10^39 = EASY POOINTS
Answer:
39
Step-by-step explanation:
because the decimal is moved 39 times as shown by calculating the sum
Answer:
Your answer is 39
Hope this helps
A coin is tossed and the spinner is spun, One possible outcome is H3
(heads, 3). What is the sample space of this experiment?
Answer:
Possible Outcomes? I hoped that helped it was kinda confusing to me.
Step-by-step explanation:
what is the volume of the rectangular prism HELPPP WILL GIVE BRAINLIEST
Answer:
1 1/9
Step-by-step explanation:
Find the area. Simplify your answer.
X+9
X+8
Help please