Answer:
Step-by-step explanation:
-7+14=7
D.7
A national survey of 2500 adukt citizens of a nation found that 21 % dreaded Valentine's Day. The margin of error for the survey was 5.4 percentage points with 90% confidence. explain what this means.
which statement below is the best explanation?
a. there is 84.6% to 95.4% confidence that 25% of the adult citizens of the nation dreaded Valentine's Day
b. in 90% of samples of adult citizens of the nation, the proportion that dreaded Valentine's Day is between 0.196 and 0.304.
c. there is 90% confidence that the proportion of the adult citizens of the nation that dreaded Valentine's Day is between 0.196 and 0.304.
d. there is 90% confidence that 25% of the adult citizens of the nation dreaded Valentines Day.
Answer:
The correct option is C
Step-by-step explanation:
From the question we are told that
The sample size is [tex]n = 2500[/tex]
The sample proportion is [tex]\r p = 0.21[/tex]
The margin of error is [tex]E = 0.054[/tex]
The 90% confidence interval is mathematically represented
[tex]\r p - E < p < \r p + E[/tex]
=> [tex]0.21 - 0.054 < p < 0.21 + 0.054[/tex]
=> [tex]0.156< p < 0.264[/tex]
The equivalent resistance of R1 = 1000 ohms and R2 = 1500 ohms connected in parallel is _____ ohms.
Answer:
600 Ω see attachement
Step-by-step explanation:
In a certain year, 23% of all teenagers in the United States had checking accounts. Your bank, TeenChex Inc., is interested in targeting teenagers who do not already have a checking account. (a) If TeenChex selects a random sample of 1,000 teenagers, what number of teenagers without checking accounts can it expect to find? teenagers What is the standard deviation σ of this number? (Round the standard deviation to one decimal place.)
Answer:
1. 770
2. 13.31
Step-by-step explanation:
n = 1000
P (probability of those with account) = 23% = 0.23
q(probability of those without account) = 1-p = 0.77
a. We are expected to find the expected number of those without checking account
= n * q
= 1000 * 0.77
= 770
b. Standard deviation
= √n*p*t
= √1000x0.77x0.23
= √177.1
= 13.31
The diagonal of a rectangle is 10 units. The width is 6 units, What is the area of the rectangle in square
units?
Answer:
48 square units
Step-by-step explanation:
Let the length of the rectangle be x units.
By Pythagoras theorem:
[tex]x = \sqrt{ {10}^{2} - {6}^{2} } \\ x = \sqrt{ 100 - 36 } \\ x = \sqrt{64} \\ x = 8 \: units \\ [/tex]
Length of rectangle = 8 units
Area of rectangle
= Length * width
= 8 * 6
= 48 square units
triangle town wants to build a school that is equidistant from its three cities L,M, and N. Which construction correctly finds the best location of the school? A. Construction Y because point E is the incenter of triangleLMN B. Construction Y because point E is the circumcenter of triangleLMN C. Construction X because point C is the incenter of triangleLMN D. Construction X because point C is the circumcenter of triangleLMN
Answer:
C. Construction X because point C is the incenter of triangle LMN.
Step-by-step explanation:
The construction requires that the school must be at equal distance to cities of the triangle town. Thus, it must be located at the point of intersection of the straight path from the three cities L, M, and N.
To be able to construct the school with the specification, option C is the most suitable. Construction X describe the appropriate method because point C is the incenter of triangle town of cities L, M, and N.
Answer:
A
Step-by-step explanation:
Construction Y because point E is the circumcenter of Triangle LMN
Paul purchased 8 computers which cost him a total of $6,016, and Mary purchased 8 printers which cost her $1,080.
Steve purchased 25 DVD movies which cost $350, and Sally purchased 34 CD’s which cost $306. How much would 7 computers, 9 printers, 23 DVD’s, and 30 CD’s cost?
What are axioms in algebra called in geometry?
What are axioms in algebra called in geometry
Answer:
Axioms are generally statements made about real numbers. ... Sometimes they are called algebraic postulates. Often what they say about real numbers holds true for geometric figures, and since real numbers are an important part of geometry when it comes to measuring figures, axioms are very useful
please helppppppppppppppppppppppppppppp
Answer:
54
Step-by-step explanation:
angle A+angle B+Angle C =180 degree [ angle sum property of a triangle]
36 +90 + angle B =180 degree
126 +angle B =180 degree
angle B= 180-126
54 degree
Ans
Need help... Thank you
Answer:
3
because that's the definition of corresponding angles
13 The diagram shows nine identical squares inside a rectangle.
The length of the rectangle is 12 cm.
Work out the width of the rectangle
Answer:
5...is the width of the rectangle .
Evaluate the Expression
If x = -3, y = 6, and z = -5
-15 + x + y =
Answer:
-12
Step-by-step explanation:
-15+x+y=
-15+(-3)+6
-15-3+6
-15+3
-12
Find the equation of the line that contains the points (3,5) and (7, 7). Write the equation in the form y = mx + b and identify m and b.
m=
b=
Step-by-step explanation:
Using Point - Slope formula :
[tex](y - y_1) = \frac{(y_2 - y_1)}{(x_2 - x_1)} (x - x_1)[/tex]
[tex](y - 5) = \frac{2}{4} (x - 3)[/tex]
2y - 10 = x - 3
[tex]y = \frac{1}{2} x + \frac{7}{2} [/tex]
m = 1 / 2
b = 7 / 2
a car takes 8 hours to reach to its destination with a speed of 75km/hr. how much time will it take if the speed is 60km/hr?
Answer:
10 hours
Step-by-step explanation:
speed = distance/time
s = d/t
d = st
d = 75 km/h * 8 h = 600 km
t = d/s
t = 600 km/(60 km/h) = 10 h
Answer: 10 hours
7-7 im gonna post 7 more please helppp!
Hi there! Hopefully this helps!
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Answer: p = 21~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~[tex]p - 18 = 3[/tex]
Add 18 to both sides.
[tex]p = 3 + 18[/tex]
Add 3 and 18 to get, you guessed it, 21!After using a 15% off coupon, the price of a sheet cake is $30.94. What was the original price?
Answer:
The original price was 36.40
Step-by-step explanation:
p = original price of cake
using the coupon
p - 15% off = 30.94
p - .15 p = 30.94
Combine like terms
.85p = 30.94
divide each side by .85
p = 30.94/.85
p =36.40
The original price was 36.40
How can you create a cone and a cylinder using this tool? Describe the shapes and the specific axes of rotation that produce a cone and a cylinder. If there is more than one polygon that can generate the same cone or cylinder, state each shape in the table.
Answer:
The answer is in the image.
Step-by-step explanation:
Answer:
Cone- 1 isosceles triangle revolved 180° about its height
2 isosceles triangle revolved 180° about its height
cylinder 1 rectangle revolved 180° about either axis of symmetry
2 revolved 360° about any side
Step-by-step explanation: plato edmentum
I don’t know the answer to this question
PLEAAASE ANSWER TIMER IS RUNNING OUT
Answer:
the correct answer is 1/2.
How i came to this answer was adding all of the number of medals together for all of the years, coming up to a total of 22. When asking about probability of any given set or amount of things, you always take the selected values and take them out of the whole amount. Years 2009 and 2012 have a whole selected value of 11 (4+7). Therefore you're "taking" 11 from 22, coming up with the fraction 11/22 seeing as that is not a answer choice the next step is to simply the fraction to 1/2.
Answer:
C Mark me as brainliest!!!
Step-by-step explanation:
Use a t-test to test the claim about the population mean µ at the given level of significance using the given sample statistics. Assume the population is normally distributed.
Claim: μ ≥8300, α=0.10
Sample statistics: ¯x=8000, s=440, n=24
Required:
a. What are the null and alternative hypotheses?
b. What is the value of the standardized test statistic? (Round to 2 decimal places as needed.)
c. What is the p-value? (Round to three decimal places as needed.)
d. Decide whether to reject or fail to reject the null hypothesis.
Answer:
uoooooohuuuuuuuuuuuihouu
Find all values of x for which the series converges. (Enter your answer using interval notation.) [infinity] 9 x − 7 9 n n = 0 For these values of x, write the sum of the series as a function of x.
Answer:
The series converges to [tex]$ \frac{1}{1-9x} $[/tex] for [tex]$ \frac{-1}{9} < x < \frac{1}{9} $[/tex]
Step-by-step explanation:
Given the series is [tex]$ \sum_{n=0}^{\infty} 9^n x^n $[/tex]
We have to find the values of x for which the series converges.
We know,
[tex]$ \sum_{n=0}^{\infty} ar^{n-1} $[/tex] converges to (a) / (1-r) if r < 1
Otherwise the series will diverge.
Here, [tex]$ \sum_{n=0}^{\infty} 9^n x^n = \sum_{n=0}^{\infty} (9x)^{n} $[/tex] is a geometric series with |r| = | 9x |
And it converges for |9x| < 1
Hence, the given series gets converge for [tex]$ \frac{-1}{9} < x < \frac{1}{9} $[/tex]
And geometric series converges to [tex]$ \frac{a}{1-r} $[/tex]
Here, a = 1 and r = 9x
Therefore, [tex]$ \frac{a}{1-r} = \frac{1}{1-9x} $[/tex]
Hence, the given series converges to [tex]$ \frac{1}{1-9x} $[/tex] for [tex]$ \frac{-1}{9} < x < \frac{1}{9} $[/tex]
Shown below is the solution to the linear program for finding Player A's optimal mixed strategy in a two-person, zero-sum game.
VARIABLE VALUE REDUCED COSTS
PA1 0.050 0.000
PA2 0.600 0.000
PA3 0.350 0.000
GAINA 3.500 0.000
CONSTRAINT SLACK/SURPLUS DUAL PRICES
1 0.000 -0.500
2 0.000 -0.500
3 0.000 0.000
4 0.000 3.500
a.
What is Player A's optimal mixed strategy?
b.
What is Player B's optimal mixed strategy?
c.
What is Player A's expected gain?
d.
What is Player B's expected loss?
use this area to narratively respond to all four parts of the question
Answer:
Following are the answer to this question:
Step-by-step explanation:
For Option a:
Its optimal mixed approach for Player A's to Player A
A1 with a chance of .05 utilizing technique
Using the .60 chance strategy for A2
Use the .35 possibility strategy for A3
For Option b:
Optimal level mixed approach for team B:
Use the strategy for B1 with a probability of 50
Using the chance strategy for B2 at .50
no use strategy for B3
For Option c:
The estimated gain of Player A will be= 3.500
For Option d:
The estimated loss of Player B will be 3.500
On the graph of the equation 3x+ 2y=18, what is the value of the y-intercept?
A) -9
B) -6
C) 6
D) 9
Answer:
D) 9Step-by-step explanation:
[tex]3x+ 2y=18\\\\Let \:x\:equal\:to\:0\\\\3(0)+2y=18\\\\0+2y=18\\\\2y=18\\\\Divide \:both\:sides\:of\:the\:equation\:by \:2\\\frac{2y}{2} =\frac{18}{2} \\\\y =9\\(0,9)[/tex]
Answer:
y = 9
Step-by-step explanation:
3x + 2y = 18
required:
find the y-intercept
we have to eliminate x to get the y intercept value
3(0) + 2y = 18
2y = 18
y = 18/2
y = 9
so the x & y intercept would be (0, 9)
Determine whether the situation involves permutations or combinations. Then solve. How many ways are there to place an algebra book, a geometry book, a chemistry book, an English book, and a health book on a shelf?
Answer:
The situation involves permutationThe number of arrangement is 120Step-by-step explanation:
Given that
Algebra book=1
Geometry book=1
Chemistry book= 1
English book= 1
Health book= 1
Total number of books N = (1+1+1+1+1)= 5
Permutation is used to determines the number of possible arrangements in a set when the order of the arrangements is crucial.
Number of arrangements = N!
Number of arrangements= 5*4*3*2*1= 120
I need help with the questions could someone answer them all?
Answer:
circumference= 40.82 cm
Step-by-step explanation:
formula circumference= 2 x pi x radius ( 2 x 3.14x 6.5)
3) shaded region = area circle - area rectangle = 132.665 cm - 60 cm^2= 72.665 cm^2
4) 1 foot = 30.48 cm, 6 feet = 182.88 cm = radius 182.88 cm area circle = pi x square radius = 3.14 x 182.88 ^2 ----------> 3.14 x 33445.0944 =105017.5964 cm^2
if 5.49 = 70% , 100% = x so 5.49 x 100 divided 70 = X so X = 7.844 then 5.49 is the 70 % of 7.844
if 6.99 is 36% of something, 6.99 = 36%
X = 100%
so 6.99 x 100 = X (equis) x 36%
6.99 x 100 / 36 = X, so X = 19.416 . 6.99 is the 36% of 19.416
The ratio of adults to children on a field trip is 2:7. If there are 14 adults on the trip, how many children are there?
Answer:
49 children
Step-by-step explanation:
Adult : Child = 2 : 7
Adult = 14
2 = 14
So, 1 = 14/2 = 1 = 7 in the ratio.
So, 7 x 7 = 49 children are there.
Answer:
49
Step-by-step explanation:
Let's set up a proportion!
2 14
-- --
7 x
Now, we cross multiply
14 times 7 = 98
2 times x = 2x
98 = 2x
98 divided by 2 equals 49
M. Score: 0 of 1 pt
5 of 12
5.1.35
Find the prime factorization of the composite number.
795
795 =
(Type your answer using exponential notation.)
Answer:
3×5×53
Step-by-step explanation:
You can use divisibility rules to find the small prime factors.
The number ends in 5, so is divisible by 5.
795/5 = 159
The sum of digits is 1+5+9 = 15; 1+5 = 6, a number divisible by 3, so 3 is a factor.
159/3 = 53 . . . . . a prime number,* so we're done.
795 = 3×5×53
_____
* If this were not prime, it would be divisible by a prime less than its square root. √53 ≈ 7.3. We know it is not divisible by 2, 3, or 5. We also know the closest multiples of 7 are 49 and 56, so it is not divisible by 7. Hence 53 is prime.
Help!!! PLEASE Math Hurry I have 10mins to finish
Answer:
x0 is the answer I just did that question and got it right
Answer: Answer is in the steps
Step-by-step explanation:
If we given the angle measure in variables then we will sum them up equal 180 and solve for x to determine the angle measure.
9x + x +x+4 = 180
11x + 4 = 180
-4 -4
11x = 176
x=16
In this case we can find the angle measures by using the expressions.
x = 16 degrees
x+4 = 20 degrees
9x = 144 degrees
I do not understand this, can anyone help me out?
Answer:
the Answer what have to be the fist bc c is the only on that is not with a ,g or b
Step-by-step explanation:
Chen took 54 photos with his digital camera. He stored an equal number of photos in each of 6 folders on his computer. Which multiplication sentence could Chen use to find the number of photos in each folder? 0 6 X 54 = 324 0 54 + 6 = 9 O 6 X 9 = 54 O 5 X 9= 45 plz help me
Answer:
6x9=54
Step-by-step explanation:
6 folders with 9 photos in each = 54 photos all together.
Assignment
Section (A) 5 Marks
Q.No. 1. Do as directed;
(1) Which one of the following is square of 4;
a) 2
b) 8
c) 16
d) 64
(II)Unit digit in the square of 3457 is;
a) 3
b) 7
c) 4
d) 9
(III) Cube root of 64 is;
a) 8
b) 4
c) 2
d) 10
(IV) Ratio of 2:4 is;
a) 4:1
b) 1:2
c) 1:3
d) None of these
(V) Discount =
a) Marked Price - Sale Price
B) Sale Price - Marked Price
......