Answers
Answer:
Undefined
Step-by-step explanation:
There really is no explanation. All vertical lines have an undefined slope.
Related Questions
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?
Answers
Answer:
20.5 hours
Step-by-step explanation:
143.50/7=20.5
Hope this helps and can I have brainliest!
Which equation can be used to find the value of b if side a measures 8.7 cm?
Answers
Answer:
D. 34.8+b=54.6
Step-by-step explanation:
What's the nearest integer and the nearest tenth
Answers
Answer:
nearest integer 27 by 4
A stack of letters is 2.4 inches thick. Each letter is 0.6 inches thick.
How many letters are in the stack?
Answers
Answer:
4
Step-by-step explanation:
0.6 x 4 is 2.4
A construction company is hired to build a wheelchair ramp for a restaurant. The ramp connects the handicap parking space (point A) to the top of the porch of the restaurant (point B) that is 4.5 feet higher than the ground level below it (point C making a right triangle ABC. The building regulations require the ramp angle to be 8 degrees, meaning angle A must be 8 degrees.
1. On a sheet of paper, draw the right triangle of the ramp and label the sides and angle A. Indicate which side is 4.5 ft.
2. Use the right triangle trigonometry and calculate the length of the ramp (sid AB). Show your work on the paper.
Answers
Answer:
1. diagram in the attachment
2. AB = 32.3 ft
Step-by-step explanation:
2. from the diagram:
[tex]sin \theta = \frac{opposite}{hypotenuse}\\sin (8) = \frac{4.5}{AB} \\AB = \frac{4.5}{sin(8)} \\AB = \frac{4.5}{0.1392} \\AB = 32.33ft[/tex]
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?
Answers
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.
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?
Answers
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
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?
Answers
Answer:
$542.50
Step-by-step explanation:
Isaiah's weekly earnings will be ...
($15.50 /h)(35 h/wk) = $542.50 /wk
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
Answers
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?
Answers
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.
Find the measure of x help asap
Answers
Answer:
M<XQL=118°
Step-by-step explanation:
209-13b=146-4b
209-146=-4b+13b
63=9b
b=7
<XQL=209-13b=
209-13(7)=
209-91=
118
How do you do this question?
Answers
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.
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
Answers
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:
After walking for 15 minutes, Zachary’s treadmill displayed “120 calories burned”. At this rate, how many calories will Zachary burn in 65 minutes?
Answers
120/15=8
8x25=525
Yesenia solved the equation shown below. Select the correct justification for each step shown.
Justification
Step
-4(3x - 1) = 12 – 4x
3.2 – 1= -3+2
Original Equation
3.2 +2=2
2 = -23
Addition Property of Equality
-1=2
GIVING BRAINLIEST
Answers
Answer:
Step-by-step explanation:
Yesenia's solution is as followed.
Step Justification
1). -4(3x - 1) = 12 - 4x 1). Original equation
2). 3x - 1 = -3 + x 2). Distributive property
3). 3x + 2 = x 3). Addition Property of equality
4). 2 = -2x 4). Subtraction property of equality
5). -1 = x 5). Division property of equality
Can someone help me fast please!!!!
Answers
Answer:
Step-by-step explanation:
121=irrational
100= rational
99= irrational
10=rational
please help math 30 points
Answers
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!
The table represents a function what is the value of f(-1)?
Answers
Answer:
0
Step-by-step explanation:
f(-1) is when x = -1
When x = -1, f(x) = 0.
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?
Answers
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
#SPJ2
M+2 6 is equal to what?
Answers
Answer:
4
Step-by-step explanation:
I'm going to assume you mean [ m + 2 = 6 ]
m + 2 = 6
~Subtract 2 to both sides
m = 4
Best of Luck!
Need help with this please.
Answers
Answer:
(-oo, 3] or (7, +oo)Step-by-step explanation:
Given
x ≤ 3 or x > 7Same in interval notation
(-oo, 3] or (7, +oo)5/7=20/r
R=28
Can anyone explain how you get 28
Answers
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.
Given b(x) = |x+4| what us b(-10)?
Answers
Answer:
6
Step-by-step explanation:
b(x) = |x + 4|
b(-10) = |-10 + 4|
b(-10) = |-6|
b(-10) = 6
Best of Luck!
For the function f(x) = 7x-x^2 find each of the following;
a) f(t-4)
b) f(p + 4)
c) f(a+h) - f(a)
d) f(t-1)+c
e) f(a) + 8
Answers
Answer:
Step-by-step explanation:
in the expression f(x), x is just a place holder. It can be replaced with any value you choose.
f(t-4) = 7(t-4) - (t-4)^2
f(p+4) = 7(p+4) - (p+4)^2
f(a+h)-f(a) = 7(a+h)^2 - (a+h)^2 - (7a-a^2)
f(t-1)+c = 7(t-1) - (t-1)^2 + c
f(a)+8 = 7a - a^2 + 8
you can simplify these some
Which statement could be used to explain why f(x) = 2x – 3 has an inverse relation that is a function?
1. The graph of f(x) passes the vertical line test.
2. f(x) is a one-to-one function.
3. The graph of the inverse of f(x) passes the horizontal line test.
4. f(x) is not a function.
Answers
Answer:
2. f(x) is a one-to-one function.
Step-by-step explanation:
If a relation passes the vertical line test, it is a function.
If a relation passes the vertical line test and the horizontal line test, then it is a one-to-one function, and its inverse is also a function.
Answer: 2. f(x) is a one-to-one function.
An awards dinner costs $225 plus $5 for each person making reservations. The total bill is $735. How many people attended the dinner?
Answers
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°)
Answers
I hope this helps you
HI PLZ HELP I GIVE OUT BRAINIEST!
Answers
Answer:
A. 300
Step-by-step explanation:
Answer: 300 kilometers per hour
Step-by-step explanation: :)
PLEASE HELP WILL GIVE BRAINLIEST <3
As Altitude ___?___ Temperature ___?___
A. Increases; Decreases
B. Decreases; increases
C. increases; increases
D. decreases; decreases
Answers
Answer:
A
Step-by-step explanation:
The higher you are the cooler it gets, that's why there's snow on mountains
Answer: A I think it's A
Step-by-step explanation:
What is the factorization of 121b^4 − 49?
Answers
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:
