Answers
1) CD
2)ABE
3)BA
Related Questions
Suppose that 12 inches of wire costs 36 cents.
At the same rate, how much (in cents) will 47 inches of wire cost?
Answers
47 inches = 47 x 3 = 141 cents
The Internal Revenue Service (IRS) provides a toll-free help line for taxpayers to call in and get answers to questions as they prepare their tax returns. In recent years, the IRS has been inundated with taxpayer calls and has redesigned its phone service as well as posting answers to frequently asked questions on its website (The Cincinnati Enquirer, January 7, 2010). According to a report by a taxpayer advocate, callers using the new system can expect to wait on hold for an unreasonably long time of 15 minutes before being able to talk to an IRS employee. Suppose you select a sample of 50 callers after the new phone service has been implemented; the sample results show a mean waiting time of 13 minutes before an IRS employee comes on line. Based upon data from past years, you decide it is reasonable to assume that the standard deviation of waiting times is 11 minutes. Use α=0.05
Required:
a. State the hypotheses.
b. What is the p-value?
c. Using α=0.05, can you conclude that the actual mean waiting time is significantly less than the claim of 15 minutes made by the taxpayer advocate.
Answers
Answer:
a)Null hypothesis : [tex]H_0:\mu \geq 15[/tex]
Alternate hypothesis : [tex]H_a:\mu < 15[/tex]
b)p value = 0.1003
c)We can conclude that the actual mean waiting time is significantly less than the claim of 15 minutes made by the taxpayer advocate.
Step-by-step explanation:
Null hypothesis : [tex]H_0:\mu \geq 15[/tex]
Alternate hypothesis : [tex]H_a:\mu < 15[/tex]
[tex]\mu = 15\\\bar{x}=13\\\sigma = 11\\n = 50[/tex]
Sample size is more than 30 . So, we will use Z test
[tex]Z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}\\Z=\frac{13-15}{\frac{11}{\sqrt{50}}}\\Z=-1.285[/tex]
Use z table to find p value
p value = 0.1003
α=0.05
p value< α
So, we reject null hypothesis
Hence We can conclude that the actual mean waiting time is significantly less than the claim of 15 minutes made by the taxpayer advocate.
help i dont get it. please put answer with an explanation
Answers
Answer:
photo looks blank
Step-by-step explanation:
......
PLEASE HELP ME ASAP!!!!
Answers
Answer:
368 cm²
Step-by-step explanation:
Bottom: 12 * 10 = 120 cm²
Front and back (square): 2 * (10 * 10) = 200 cm²
Front and back (triangle): 12*8/2 = 48 cm²
Total = 120 + 200 + 48 = 368 cm²
can i please get some help!!
Answers
Answer:
3 cis(43)
Step-by-step explanation:
When we divide number in polar form, we divide the modulus, and subtract the degrees.
36/12=3
45-2=43
3 cis(43)
Find the slope of the line graphed
Answers
Answer:
1. 5/-2
2. 0/1
3. 6/2
Step-by-step explanation:
rise/run when calculating slope
What is the sum of the 12th square number and the 3rd cube number?
Answers
Answer:
171
Step-by-step explanation:
Your calculator can help you find the sum ...
12² +3³ = 144 +27 = 171
Select the correct answer.
Which number line shows the solution to this compound inequality?
0<2x + 6 < 16
OA. HE
-10 -8
-6 -4 -2 0 2 4
6
8
10 12 14
B. +++
- 10 -8
-6 -4
-2
0
2
4
6
8
10 12 14
Oc. + +
-10 -8
++
10 12 14
-6 -4 -2
0
2
4
6
8
OD.
httot
-10 -8 -6 -4 -2 0
2
4
6
8
10 12 14
Answers
Answer:
C.
Step-by-step explanation:
pa brnlst hehehheeh
thx m ltr
9. Every school day, Lucas bikes to school, 12 miles away at 8 miles per hour. Today, Lucas was thinking about planning his sister’s party in the evening, and, distracted, travelled the first four mile at only 6 miles per hour. At what speed must he travel the last eight miles to reach school in time?
Answers
Answer:
Step-by-step explanation:
The question may be answered easily by first determining how far we would ride the bike in 1 hour. Riding the bike 12 mph (miles per hour) for one hour, we would ride the bike 12 miles.
Since 20 minutes is 1/3 of a hour, divide 12 by 3 to find out how far the biker traveled in 1/3 of the time:4 miles. that is the answer and the steps!!
Which is a tangent of circle P?pls helpt ASAP!!!!
Answers
Explanation:
Tangent lines touch the circle at exactly one point.
The value of 8 in 5.18 of the value of 8 in 5.81
Answers
Answer:
the value of 8 in the first one is 8
in the second one is 80
Fill in the table using this function rule. IM GIVING EXTRA POINTS AND BRAINLIEST!!
Answers
Answer:
3 - 10
4 - 7
5 - 4
6 - 1
Suppose f(x) is a function such that if p
O f(x) can be odd or even.
O f(x) can be odd but cannot be even.
O f(x) can be even but cannot be odd.
O f(x) cannot be odd or even.
Answers
Kylie just accepted a job at a new company where she will make an annual salary of
$43000. Kylie was told that for each year she stays with the company, she will be
given a salary raise of $5000. How much would Kylie make as a salary after 6 years
working for the company? What would be her salary after t years?
Salary after 6 years:
Salary after t years:
Answers
Answer:
$73,000
$43,000 + $5,000 x t
Step-by-step explanation:
Every year increase $5,000, after 6 years increase $5000 x 6 = $30,000
Her salary will be $43,000 + $30,000 = $73,000
After t years, her salary will be
$43,000 + $5,000 x t
In a closely contested school bond election, polling indicates that 50% of voters are in favor of the bond. Assume central limit theorem conditions apply. Suppose a random sample of 80 voters is selected
Answers
The central limit theorem is used to consider sample sizes of at least 30
The mean of the distribution is 40, and the standard deviation is 4.47
How to determine the meanThe given parameters as:
p =50% --- the proportion
n = 80 --- the sample size
The mean is then calculated as:
[tex]\bar x =np[/tex]
So, we have:
[tex]\bar x =80 * 50\%[/tex]
[tex]\bar x =40[/tex]
How to determine the standard deviationThe standard deviation is calculated as:
[tex]\sigma = \sqrt{np(1 -p)[/tex]
So, we have:
[tex]\sigma = \sqrt{80 *50\% * (1 - 50\%)[/tex]
Evaluate the root
[tex]\sigma = 4.47[/tex]
Hence, the mean of the distribution is 40, and the standard deviation is 4.47
Read more about the central limit theorem at:
https://brainly.com/question/17186021
Which is the following is equivalent to sin 35 ?
Answers A-D
A
COS 35
B COS 55
Csin 55
Dtan 35
Answers
Answer:
1
Step-by-step explanation:
=sin 55 cos 35 + cos 55 sin 35 =sin (55+35)=sin 90=1
You borrow $1400 from a friend and promise to pay back
$2000 in two years. What simple interest rate, to the nearest
tenth of a percent, will you pay?
Answers
Answer:
21.4%
Step-by-step explanation:
You would pay back a 21.4%
The simple interest rate on the loan of $1400 is approximately 21.4% per year.
What is the simple interest rate of the loan?The simple interest can be expressed as:
A = P( 1 + rt )
Where A is accrued amount, P is the principal, r is the interest rate and t is time.
Given the parameter:
Principal P = $1400
Accrued amount A = $2000
Time t = 2 years
Interest rate r =?
Plug these values into the above formula and solve for the interest rate.
A = P( 1 + rt )
[tex]r = \frac{1}{t} * ( \frac{A}{P} - 1 ) \\\\r = \frac{1}{2} * ( \frac{2000}{1400} - 1 ) \\\\r = \frac{1}{2} * ( \frac{2000}{1400} - 1 ) \\\\r = 0.21428[/tex]
Convert r decimal to R a percentage
R = 0.214 × 100
R = 21.4% per year
Therefore, the rate is approximately 21.4% per year.
Learn more about simple interest here: brainly.com/question/25845758
#SPJ2
[tex]\sqrt{-(-9)^2}[/tex]
Answers
The table represents a linear function. A two column table with six rows. The first row, x, has the entries negative 4, negative 2, negative 1, 1, 2. The second column, y, has the entries, negative 2, negative 10, negative 14, negative 22, negative 26. What is the slope of the function? –8 –4 2 5 Mark this and return
Answers
The slope of a line indicates how steep it is calculated mathematically as "rise overrun". It calculates the rate where the variable y changes when the relevant variable changes, and the further calculation can be defined as follows:
Given Points:
[tex](-4,-2) , (-2,-10)[/tex]
To find:
slope (m)=?
Solution:
[tex](-4,-2),(-2,-10)\\x_{1} =-4\\y_{1} =-2\\x_{2}= -2\\y_{2}=-10\\[/tex]
Using formula:
[tex]slope(m)=\frac{y_{2-} y_{1} }{x_{2-} x_{1} } \\=\frac{-10-(-2)}{-2-(-4)} \\\\=\frac{-10+2}{-2+4}\\=\frac{-8}{2} \\=-4[/tex]
Therefore, the slope is "- 4".
A number raised to the fourth power.
Answers
Answer:
In arithmetic and algebra, the fourth power of a number n is the result of multiplying four instances of n together. So: n4 = n × n × n × n. Fourth powers are also formed by multiplying a number by its cube.
Step-by-step explanation:
Julia’s favorite snack comes in a box shaped like a right triangular prism. The dimensions of the prism are shown
a-43cm3
b-56cm3
c-112cm3
d-137cm3
Answers
find the percent change from 62 to 7
Answers
Answer:
11.29
Step-by-step explanation:
I don't actually have a step-by-step explanation but I have to use up characters to
On New Year's Day, the temperature in Chicago was 5°F. That same day, the temperature in Minneapolis was
–
1°F.
How much warmer was it in Chicago than Minneapolis?
Answers
Answer:
6°F
Step-by-step explanation:
6+ -1 =5
There are 6° F warmer was it in Chicago than Minneapolis.
What is Addition?The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.
We have to given that;
On New Year's Day, the temperature in Chicago was 5°F.
And, That same day, the temperature in Minneapolis was - 1°F.
Hence, The temperature warmer was it in Chicago than Minneapolis is,
⇒ 5° F - (- 1)° F
⇒ 6° F
Thus, There are 6° F warmer was it in Chicago than Minneapolis.
Learn more about the addition visit:
https://brainly.com/question/25421984
#SPJ2
Writing Linear Equations
Answers
Answer:
1. y=-3x+7
2. y=3/4x+10
3. y=-5x-2
4. y=12x-6
5. y=1/2x+9
Step-by-step explanation:
for numbers 2, 4, 3, and 5 all you have to do is look at the slope they give you. in a linear equation (y=mx+b) the m is the slope. because there is only one equation with the slope they give you, that is the corresponding answer. but for 1, its a bit more complicated. because they give you a point you have to plug the x value into your equation. for exaple for 1. they give you 0 as the x value so you plug it into one of the equations. and if that equation gives you 7 as the y, then you have your answer.
what is the value of 27-2m, when m=3
Answers
hope this helps
Answer:
21
Step-by-step explanation:
27 - 2m = 27 - (2 x 3) then 27 - 6 is 21, so your answer should be 21.
please helpppp meeeee
Answers
Answer:
c.
Step-by-step explanation:
Evaluate the integral of
X-1/ (x+1) (x^3 + x^2 + x )^0.5
:)
Answers
Remains 2 / (x^3 + x^2 +x)^0.5
Take root x outside then complete the square
You will find the answer
evaluate ghjk if g=-4,h=-2,j=-6,and k =5
Answers
Answer:
GHJK=-240
Step-by-step explanation:
G=-4
H=-2
J=-6
K=5
[tex]-4*-2*-6*5=-240[/tex]
GHJK=-240
I think this is how you do it????
Answer:
-240
Step-by-step explanation:
Given;
evaluate ghjk if g=-4,h=-2,j=-6,and k =5
Substitute:
GHJK ⇒ (-4)(-2)(-6)(5)
(-4)(-2)(-6)(5)
(8)(-6)(5)
-48(5)
-240
~Learn with Lenvy~
How many times does 10 go into 4 1/2
Answers
Answer: 0.45
Step-by-step explanation:
it goes into 4 1/2 in 0.45 times! Hoped this helped!
what are the equivalent fractions of 4/7 and 3/5
Answers
Answer:
3/5= 6/10, 9/15, 12/20, 15/25, 18/30
4/7
= 8/14, 12/21, 16/28, 20/35, 24/42
Step-by-step explanation:
mark me brainliest!!
Hey there!
Remember, equivalent means equal.
So we need to find some fractions that are equal to 4/7 and 3/5.
We can easily do that.
First, let's take 4/7.
Let's multiply the top & bottom by 2:
8/14
4/7 and 8/14 are equivalent.
Let's multiply the top & bottom by 2:
16/28
We can keep multiplying...
Also, there's no reason why we cannot multiply by 3, 4, 5, 6, 7, 8...
In other words, there are infinitely many fractions equivalent to 4/7.
Same with 3/5:
6/10, 12/20...
Hope everything is clear.
Let me know if you have any questions; if so, please ask.
#LearningDoesn'tEnd
[tex]\rule{200}{2}[/tex]