Answer: 300
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What's the nearest integer and the nearest tenth
Answer:
nearest integer 27 by 4
help me please im kind of in a rush
Answer:
B-7^2x2÷b6
Step-by-step explanation:
What is the factorization of 121b^4 − 49?
Answer:
(11b^2 + 7) (11b^2 - 7)
Explanation:
Since both terms are perfect squares, factor using the difference of squares formula, a^2 - b^2 = (a + b) (a - b) where a = 121b^4 and b = 49
Answer:
D
Step-by-step explanation:
A rectangles area and perimeter have the same numerical value. The length of the rectangle is 22 feet. What is the width of the rectangle in feet?
Answer:
its 2,2
Step-by-step explanation:
2.4 is wrong
The width of the rectangle in feet will be 2.2 feet.
What is the rectangle?Let W be the rectangle's width and L its length. Then the area of the rectangle will be
Area of the rectangle = L × W square units
And the perimeter of the rectangle will be
Perimeter = 2(L + W)
A rectangle's area and perimeter have the same numerical value. The length of the rectangle is 22 feet. Then we have
L × W = 2(L + W)
22W = 2(22 + W)
11W = W + 22
10W = 22
W = 2.2 feet
The width of the rectangle in feet will be 2.2 feet.
More about the rectangle link is given below.
https://brainly.com/question/10046743
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Can someone help
Me Plis
Item2 10 points eBookPrintReferences Check my work Check My Work button is now enabledItem 2Item 2 10 points In an article in the Journal of Advertising, Weinberger and Spotts compare the use of humor in television ads in the United States and the United Kingdom. They found that a substantially greater percentage of U.K. ads use humor. (a) Suppose that a random sample of 400 television ads in the United Kingdom reveals that 142 of these ads use humor. Find a point estimate of and a 95 percent confidence interval for the proportion of all U.K. television ads that use humor. (Round your answers to 3 decimal places.) (b) Suppose a random sample of 500 television ads in the United States reveals that 122 of these ads use humor. Find a point estimate of and a 95 percent confidence interval for the proportion of all U.S. television ads that use humor. (Round your answers to 3 decimal places.) (c) Do the confidence intervals you computed in parts a and b suggest that a greater percentage of U.K. ads use humor? Next Visit question mapQuestion 2 of 4 Total2 of 4 Prev
Answer:
a
point estimate is [tex]\r p = 0.355[/tex] i.e 35.5 %
confidence interval is [tex]0.3081 < p<0.4019[/tex]
b
point estimate is [tex]\r p = 0.244[/tex] i.e 24.4 %
confidence interval [tex]0.2064 < p<0.2816[/tex]
c
The confidence intervals you computed in parts a and b does not suggest that a greater number of U.K. ads use humor
Step-by-step explanation:
Considering the first question
The sample size is n = 400
The number of ads that use humor is k = 142
Generally the point estimate is mathematically represented as
[tex]\r p = \frac{k}{n}[/tex]
=> [tex]\r p = \frac{142}{400}[/tex]
=> [tex]\r p = 0.355[/tex]
Given that the confidence level is 95% then the level of significance is
[tex]\alpha =( 100 -95)\%[/tex]
=> [tex]\alpha =5\%[/tex]
=> [tex]\alpha =0.05[/tex]
From the normal distribution table the critical value for [tex]\frac{\alpha }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } =Z_{\frac{0.05 }{2} } = 1.96[/tex]
Generally the standard error is mathematically represented as
[tex]SE = \sqrt{\frac{\r p(1 - \r p)}{n} }[/tex]
=> [tex]SE = \sqrt{\frac{0.355(1 - 0.355)}{400} }[/tex]
=> [tex]SE = 0.0239[/tex]
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * SE[/tex]
[tex]E = 1.96 * 0.0239[/tex]
[tex]E = 0.0469[/tex]
Generally the 95% confidence interval is
[tex]\r p - E < p < \r p + E[/tex]
=> [tex]0.355 - 0.0469 < 0.355 + 0.0469[/tex]
=> [tex]0.3081 < p<0.4019[/tex]
Considering the second question
The sample size is n = 500
The number of ads that use humor is k = 122
Generally the point estimate is mathematically represented as
[tex]\r p = \frac{k}{n}[/tex]
=> [tex]\r p = \frac{122}{500}[/tex]
=> [tex]\r p = 0.244[/tex]
Generally the standard error is mathematically represented as
[tex]SE = \sqrt{\frac{\r p(1 - \r p)}{n} }[/tex]
=> [tex]SE = \sqrt{\frac{0.244(1 - 0.244)}{500} }[/tex]
=> [tex]SE = 0.0192[/tex]
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * SE[/tex]
[tex]E = 1.96 * 0.0192[/tex]
[tex]E = 0.0376[/tex]
Generally the 95% confidence interval is
[tex]\r p - E < p < \r p + E[/tex]
=> [tex]0.244 - 0.0376 < 0.244 + 0.0376[/tex]
=> [tex]0.2064 < p<0.2816[/tex]
Considering third question
Looking at the confidence interval in a(first question ) and b(second question) we see that the upper limit of both interval is not up to or greater than 0.5 i.e 50% hence the confidence intervals you computed in parts a and b does not suggest that a greater percentage of U.K ads uses humor
4) Dan Ariely and colleagues have conducted some extremely interesting studies on cheating (see, for example Mazar, Amir, & Ariely, 2008). To provide an opportunity for cheating, participants are given a packet of problems and told they will be paid $0.50 for each correct answer. The experiment is setup, however, so that the participant doesn’t have to turn in their work, they simply have to state how many problems they solved to get paid. This provides a prime opportunity to cheat to earn extra money. In previous tests where the problems are properly scored, so no cheating, Ariely and colleagues found that scores are normally distributed: = 3.3, = 1.0. Here is a list of scores for participants who knew that their work would not be checked. Which of these would you suspect of cheating? Why?
I've attached the complete question.
Answer:
Only participant 1 is not cheating while the rest are cheating.
Because only participant 1 has a z-score that falls within the 95% confidence interval.
Step-by-step explanation:
We are given;
Mean; μ = 3.3
Standard deviation; s = 1
Participant 1: X = 4
Participant 2: X = 6
Participant 3: X = 7
Participant 4: X = 0
Z - score for participant 1:
z = (x - μ)/s
z = (4 - 3.3)/1
z = 0.7
Z-score for participant 2;
z = (6 - 3.3)/1
z = 2.7
Z-score for participant 3;
z = (7 - 3.3)/1
z = 3.7
Z-score for participant 4;
z = (0 - 3.3)/1
z = -3.3
Now from tables, the z-score value for confidence interval of 95% is between -1.96 and 1.96
Now, from all the participants z-score only participant 1 has a z-score that falls within the 95% confidence interval.
Thus, only participant 1 is not cheating while the rest are cheating.
Susan has a part time job. She earns $7 an hour. She earns at most $143.50 a week. What is the greatest number of hours that she works?
Answer:
20.5 hours
Step-by-step explanation:
143.50/7=20.5
Hope this helps and can I have brainliest!
Need help with this please.
Answer:
(-oo, 3] or (7, +oo)Step-by-step explanation:
Given
x ≤ 3 or x > 7Same in interval notation
(-oo, 3] or (7, +oo)Each dance class is hour. It takes a student 7 hours to learn a dance routine. Which
statement is true?
A student needs to take 6 dance classes to learn the routine.
A student needs to take 10 dance classes to learn the routine.
A student needs to take 5 dance classes to learn the routine.
A student needs to take 9 dance classes to learn the routine.
Done
Answer:
The correct option is (d) a student needs to take 10 dance classes to learn the routine.
Step-by-step explanation: Given that each dance class is hour and a student takes hours to learn a dance routine.
We are to select the TRUE statement.
Duration of each dance class is given by
and the time taken by a student to learn a dance routine is given by
Therefore, the number of dance class that a students needs to learn the dance routine will be
Thus, a student needs 10 dance classes to learn the dance routine.
Option (d) is CORRECT.
Step-by-step explanation:
please help math 30 points
Answer:
5 calories
Step-by-step explanation:
Set up a proportion: [tex]\frac{45}{225} = \frac{1}{x}[/tex] Cross multiply, then divide: 225 × 1 = 1, 225 ÷ 45 = 5x = 5So, Raquel will burn 5 calories in 1 minute.
I hope this helps!
Find the distance between the points (4,-9) and (-6,-10)
Answer:
The answer is
[tex]\sqrt{101} \: \: \: or \: \: \: 10.05 \: \: \: \: units[/tex]Step-by-step explanation:
The distance between two points can be found by using the formula
[tex]d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]
where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
(4,-9) and (-6,-10)
The distance between them is
[tex]d = \sqrt{ ({4 + 6})^{2} + ( { - 9 + 10})^{2} } \\ = \sqrt{ {10}^{2} + {1}^{2} } \\ = \sqrt{100 + 1} \: \: \\ = \sqrt{101} \: \: \: \: \: \: \: \: \: \\ = 10.04987...[/tex]
We have the final answer as
[tex] \sqrt{101} \: \: \: or \: \: \: 10.05 \: \: \: \: units[/tex]
Hope this helps you
A pancake recipe calls for one egg for every four cups of flour. How many cups of flour do you need for six eggs?
Answer:
24 cups
Step-by-step explanation:
1. 1 egg= 4 cups of flour
Let x = # of eggs, and f = cups of flour
so f=4x
2. f= 4(6)
f =24
So the answer is 24 cups of flour
Answer: mutiply 4 by 6 which is 24
5/7=20/r
R=28
Can anyone explain how you get 28
Answer:
Step-by-step explanation:
we are given that these two fractions are equal. however, 20/r is just given in numerators and denominators that are four times as large, even though it is still equal to 5/7. we can tell this because 20 is 4 times larger than 5, which means that R must be 4 times larger than 7, right? YES. so we take 7*4 to get 28.
After walking for 15 minutes, Zachary’s treadmill displayed “120 calories burned”. At this rate, how many calories will Zachary burn in 65 minutes?
What is the cost of m apples, if each apple costs $0.20?
Answer:
The cost of M apples is M($0.20).
Explanation:
We don't know how many apples exactly, we only know that it is the quantity of M. Since each apple is $0.20, we can multiply that by M to get the amount of "$0.20's" for M apples.
Isaiah is starting his own gardening business. Isaiah thinks he will do a better job than his competitors, so he thinks he can charge $15.50 per hour. If he knows he will only be able to work 35 hours per week, how much money will he earn each week?
Answer:
$542.50
Step-by-step explanation:
Isaiah's weekly earnings will be ...
($15.50 /h)(35 h/wk) = $542.50 /wk
Which equation can be used to find the value of b if side a measures 8.7 cm?
Answer:
D. 34.8+b=54.6
Step-by-step explanation:
On a coordinate plane, 2 triangles are shown. The first triangle has points A (1, 4), B (3, 4), C (3, 2). The second triangle has points A prime (negative 4, 1), B prime (negative 4, 3), C prime (negative 2, 3). Triangle ABC was rotated about the origin. Which rule describes the rotation?
Answer:
R0, 90°
Step-by-step explanation:
Answer: For the first one you would describe the rotation as "-x,-y" because you would be rotating it 180 degrees. The second one would be rotating it "180" degrees.
calculate the capacity in liters of a tin 20m by 15m by 10m.
the sum of a number and 2 is 12. determine tbe number
Answer:
10
Step-by-step explanation:
2 + x = 12
Subtract 2 from both sides.
x = 10
~theLocoCoco
Given b(x) = |x+4| what us b(-10)?
Answer:
6
Step-by-step explanation:
b(x) = |x + 4|
b(-10) = |-10 + 4|
b(-10) = |-6|
b(-10) = 6
Best of Luck!
A stack of letters is 2.4 inches thick. Each letter is 0.6 inches thick.
How many letters are in the stack?
Answer:
4
Step-by-step explanation:
0.6 x 4 is 2.4
is .333333... rational
Answer:
No.
Step-by-step explanation:
If a decimal repeats forever, it will be irrational.
Hey there!☺
[tex]Answer:\boxed{\text{Rational}}[/tex]
[tex]Explanation:[/tex]
.333333 is rational because any integer, fraction, and a repeating and terminating decimals are rational. So, therefore, .333333 is rational.
Hope this helps!
An awards dinner costs $225 plus $5 for each person making reservations. The total bill is $735. How many people attended the dinner?
Answer:
102 people
Step-by-step explanation:
Hope this helps :-)
Director: Answer all question by shading all necessary steps
1. Find the exact value of (tan 105°)
I hope this helps you
dividing signed decimals rules have not changed! Move decimal point to the divisor to the _____ to make it a _____ number, and move the decimal point in the dividend the same amount, then place on top. Divide as normal, use ________ rules to determine sign of quotient.
How do you do this question?
Answer:
Converges
Step-by-step explanation:
g(x) = 1/eˣ = (1/e)ˣ
This is a geometric series. │1/e│< 1, so the series converges.
f(x) = 1 / (√x + eˣ), so f(x) < g(x). Therefore, if g(x) converges, then f(x) also converges.
Circle the vertex of the angle.
Answer: B
Step-by-step explanation:
bob charges 6.25 per hour for washing cars, If he works 8 1/2 hours a day, about how much money would bob make in a 5 day week?
Answer:
265.65
Step-by-step explanation:
6.25*8 =50
6.25/2=3.13
50+3.13=53.13
53.13*5=265.65
Answer:
$265.63 or ($265.625)
Step-by-step explanation:
So we wanna find out the total money bob would make :P
First we wanna see how much bob makes in a day
Bob works 8.5 hours a day and get 6.25 every hour:
With this info we can make the expression: 8.5 * 6.25 which equals 53.125
Then we wanna find out how much he makes in a 5 day week so:
We can make the equation 53.125 * 5 which equals 265.625
We can round 265.625 to 265.63
