Mr. Matthews gives each of his 32 students 15 minutes to
present a book report to the class. How many minutes
will it take for all of his students to present their reports?
Answer:
480 minutes or 8 hours
Step-by-step explanation:
1 student = 15 minutes
32 students = x
x= 32 students *15 minutes
x= 480 minutes
480 minutes it takes for all of his students to present their reports.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
Total Students= 32
Each student can take = 15 minutes.
So, time taken by 32 students
= 32 x 15
= 480 minutes.
Hence, students take 480 minutes to complete the report.
Learn more about Unitary Method here:
https://brainly.com/question/22056199
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please helppppp. geometry hw !!
Answer:
2/20
I guess..? it's too obvious
Step-by-step explanation:
If tan theta = 7/2 and 0
Answer:
[tex]\theta= 74.05^{o} (2dp),\\\theta= 0^{o}.\\[/tex]
Step-by-step explanation:
[tex]tan \theta=\frac{7}{2}, \\\theta= tan^{-1}(\frac{7}{2}) = 74.05^{o} (2dp),\\\theta= tan^{-1}(0) = 0^{o},\\[/tex]
Two of the statements are true; one is a lie.
Select the one that is a lie.
Then explain your reasoning.
∠GAF ≌ ∠TAE.
∠TAE and ∠FAH are complementary.
∠TAF is obtuse.
Answer:
∠GAF ≌ ∠TAE is lie
Step-by-step explanation:
∠GAF ≌ ∠TAE is lie
both are not push back angles.
What is
6+√36
pleaseeeee
Answer:
The answer is 12
Step-by-step explanation:
6+the root of 36 =12
Select the FALSE statement regarding the relationship between sampling error and sample size. a.) As a sample size decreases, the standard deviation increases. b.) An estimate becomes more accurate as you increase the sample size. c.) You can resolve poor data collection by increasing the sample size. d.) Increasing the sample size will decrease the sampling error.
Answer:
Option C
Step-by-step explanation:
The standard deviation of any sample is inversely proportional to the size of the sample. Thus, as the sample size increases, the standard deviation reduces or vice versa. Thus, option A is in correct
As the sample size increases, the confidence in estimate also increases Hence, option B is also incorrect
Option D is true to its words , hence it is also a wrong choice for this question
Hence, option C is correct
Answer:
You can resolve poor data collection by increasing the sample size
Step-by-step explanation:
the volume of the cone shown below is 108pie cm^3. What is the value of H?
Use V=1/3PIE r^2 for the volume of a cone
Answer:
h = 4cm
Step-by-step explanation:
Diameter = 18cm
Radius = Diameter/2 = 18/2 = 9cm
V = 1/3*pi*r^2*h
We know that the volume is 108pi cm^3. We can just plug in 108pi cm^3 for V and we also know that our Radius (r) is 2.
So,
108 pi = 1/3*pi*9^2*h
108 pi = (81pi*h)/3
multiply 3 from both side
108pi*3 = (81pi*h)/3 *3
324pi = 81pi*h
Now divide the 81pi from both side
324pi/81pi = (81pi*h)/81pi
4 = h
So the height is 4cm
Answer:
h = 4cm
Step-by-step explanation:
Diameter = 18cm
Radius = Diameter/2 = 18/2 = 9cm
V = 1/3*pi*r^2*h
We know that the volume is 108pi cm^3. We can just plug in 108pi cm^3 for V and we also know that our Radius (r) is 2.
So,
108 pi = 1/3*pi*9^2*h
108 pi = (81pi*h)/3
multiply 3 from both side
108pi*3 = (81pi*h)/3 *3
324pi = 81pi*h
Now divide the 81pi from both side
324pi/81pi = (81pi*h)/81pi
4 = h
So the height is 4cm
Evaluate 14 + (44+ 7) + 4^3*
HELP ME ASAP
NO LINKS OR FILES
Answer:
129
Step-by-step explanation:
44+7=51
4^3=64
14+51+64=129
Beth has a box containing music CDs. Each CD contains songs from only one of these three genres: pop (P), hip-hop (H), and rock (R). She picks one CD from the box, replaces it, and then picks another CD. The sample space for this event is listed.
P-P H-P R-P
P-H H-H R-H
P-R R-R
What is the missing term for this compound event? What is the sample size?
A.
The missing term is H-P, and the sample size is 9.
B.
The missing term is H-R, and the sample size is 9.
C.
The missing term is H-P, and the sample size is 3.
D.
The missing term is H-R, and the sample size is 3.
Answer:
B). The missing term is H-R, and the sample size is 9.
Step-by-step explanation:
Compound event is characterized as the likelihood of occurring two autonomous events at least one or more than one probable outcome.
As per the details provided, 'the term that is omitted in the given event of the compound would be (H-R) and the size of the sample would be 9(' including this missing one. The eight combination possibilities of the CDs have already been provided and thus, the last one would be 'H-R'(hip-hop and rock music CDs). This is why the total number of possibilities turns 9. Thus, option B is the correct answer.
Answer: the answer is B :)
Step-by-step explanation:
The possible value of x?
Answer:
x = 7 and x = 5
Step-by-step explanation:
12x - 35 = x²
x² - 12x + 35 = 0
(x - 7)(x - 5) = 0
x = 7 and x = 5
A medical website states that 40% of U.S. adults are registered organ donors. A researcher believes that the proportion is too high and wants to test to see if it is lower. She selects a random sample of 200 adults and finds that 74 of them are registered organ donors. Perform the hypothesis test at the 0.05 level. Compute the P-value and state a conclusion. Question 21 options: There is not enough evidence to conclude that the proportion of registered organ donors is not less than 40%. There is not enough evidence to conclude that the proportion of registered organ donors is less than 40%. P-value
Answer:
Pvalue = 0.193
There is not enough evidence to conclude that the proportion of registered organ donors is less than 40%
Step-by-step explanation:
H0 : p = 0.4
H1 : p < 0.4
Test statistic :
z=pˆ−p/√p(1−p)/n
pˆ = 74 / 200 = 0.37
Z = (0.37 - 0.40) / √(0.40(1 - 0.40) / 200
Z = - 0.03 / √0.0012
Z = - 0.03 / 0.0346410
Z = - 0.866
Test statistic = -0.866
The Pvalue :
P(Z < -0.866) = 0.193
α - level = 0.05
If Pvalue < α ; Reject H0
Since Pvalue > α ; There is not enough evidence to conclude that the proportion of registered organ donors is less than 40%
Find the value of the expression.
[(3/5)0]-2
the value is [___]
Answer:
1
Step-by-step explanation:
Any number to the power of zero is 1You can flip[tex] {1}^{ - 2} [/tex]to [tex] \frac{1}{ {1}^{2} } [/tex] which is 1In the figure to the right, what is the measure of angle DAC ?
I’m not going to show answer Options because I don’t want anyone to put something random
Don’t put links cs I’m not going to press it <3
Answer:
47 degrees
Step-by-step explanation:
i am super smart
the product of a number and twice itself is 32
is it 8,4
The sum of two rational numbers is −3/5 . If one of them is −9/20, find the other.
Answer:
-3/20
Step-by-step explanation:
Let other number = x
∴ -9/20 + x = -3/5
∴ x = -3/5 + 9/20
∴ x = -3/20
Hope this helps :) !!!!
Answer:
[tex]-\frac{3}{20}[/tex]
Step-by-step explanation:
GIVEN :-
One of the two rational numbers = [tex]-\frac{9}{20}[/tex]TO FIND :-
Sum of two rational numbers = [tex]-\frac{3}{5}[/tex]SOLUTION :-
Let the another rational number be 'x'.
According to the question , the equation formed will look like this :-
[tex]x + (-\frac{9}{20} ) = -\frac{3}{5}[/tex]
[tex]=> x - \frac{9}{20} = -\frac{3}{5}[/tex]
Now solve the equation.
Add [tex]\frac{9}{20}[/tex] to both the sides of equation in order to isolate 'x'.[tex]=> x - \frac{9}{20} + \frac{9}{20} = -\frac{3}{5} + \frac{9}{20}[/tex]
[tex]=> x = \frac{9}{20} - \frac{3}{5} = \frac{9 - (3 \times 4)}{20} = \frac{9 - 12}{20} = \frac{-3}{20}[/tex]
Which of the following is a geometric sequence? *
O -1, -3,9,27,...
0 -1,2 -4,8....
O 1,4,9,16,...
O 1,3,5,7,...
Pls help 10 ptsss
NO LINKS
Answer:
0,15/ 5,20/ 10,25/ 15,30/ 25,35
Step-by-step explanation:
the additional hours is x and total hours is y.
What is the degree of the equation?
What is the Leading Coefficient the equation ?
Solve using the Quadratic Equation.
5x2 - 3X -8=0
Answer:
Degree: x= -1, [tex]\frac{8}{5}[/tex]
leading coefficient: 5
Step-by-step explanation:
hope this helps!!!
What is 103% of 127?
Answer:
130.81
Step-by-step explanation:
127 ⋅ ( 103/ 100 ) =130.81
2. Celesta used to spend 90 minutes a day on the phone. Now she spends
60 minutes a day. What is the PERCENT DECREASE? *
Answer:
33%
Step-by-step explanation:
sorry my bad i did percentage increase.
plz help I need it in less then 10 min
16=x'2
Answer
x=8
Step-by-step explanation:
16=x×2
x=16/2
X=8
MARK ME BRAINLIST
Sameer chose 12 different toppings for his frozen yogurt sundae, which was Three-fourths of the total number of different toppings available at the make-your-own sundae shop
Answer:
You have 16 different toppings
Step-by-step explanation:
Given
[tex]Sameer = 12[/tex]
Required
How many topping at your sundae shop
From the question, we understand that Sameer's is3/4 of your toppings
Mathematically, this is:
[tex]Sameer = \frac{3}{4} * Y[/tex]
Where
Y represents You
Make Y the subject
[tex]Y = \frac{4}{3} * Sameer[/tex]
Substitute 12 for Sameer
[tex]Y = \frac{4}{3} * 12[/tex]
[tex]Y = 4 * 4[/tex]
[tex]Y = 16[/tex]
ILL GIVE BRAINLEST, please show work :)
Answer:
the answer would be 35.7 the reason why is because your multiplying the width by its heigh
Step-by-step explanation:
4.2x8.5=35.7
Find the distance between the points (7,4) and(-2,-8)
[tex] \huge \mathcal{Answer࿐}[/tex]
Distance Formula :
[tex]\large \boxed{ \sqrt{(x_2 - x_1) {}^{2} + (y_2 - y_1) {}^{2}}}[/tex]
Solution :[tex] \sqrt{(7 - (-2)) {}^{2} + (4 - (- 8)){}^{2}} [/tex][tex] \sqrt{ {9}^{2} + {12}^{2} } [/tex][tex] \sqrt{81 + 144} [/tex][tex] \sqrt{225} [/tex][tex]15[/tex]Conclusion :Distance between the points is 15 units
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
help me on this please !
Answer:
24.08
Step-by-step explanation:
We use the Pythagorean theorem and we get (16)^2 + (18)^2 = (x)^2
256 + 324 = x^2
x^2 = 580
x is about 24.08.
please help me i really need this
Answer:
1. pi or π
2. 7,234.6
3. 26.4
4. 94.2
hope it helped :)
Step-by-step explanation:
Which graph represents the solution?
Answer:
A
Step-by-step explanation:
Given the inequality :
v + 4 > 2 and 8v - 20 < 36
v + 4 > 2
v > 2 - 4
V > - 2
8v - 20 < 36
8v < 36 + 20
8v < 56
v < 56/8
v < 7
Hence,
v > - 2 and v < 7
-2 < v < 7
Researchers are studying the distribution of subscribers to a certain streaming service in different populations. From a random sample of 200 people in City C, 34 were found to subscribe to the streaming service. From a random sample of 200 people in City K, 54 were found to subscribe to the streaming service. Assuming all conditions for inference are met, which of the following is a 90% confidence interval for the difference in population proportions (City C minus City K) who subscribe to the streaming service?
A. (0.17 – 0.27) + or - 1.65 underroot 0.17/200 + 0.27/200.
B. 0.17 – 0.27) + or -1.96 underroot (0.17)(0.83) + (0.27)(0.73)/400
C. 0.17 – 0.27) + or - 1.65 underroot (0.17)(0.83) + (0.27)(0.73)/400
D. (0.17 – 0.27) + or - 1.96 underroot (0.17)(0.83) + (0.27)(0.73)/200
E. (0.17 – 0.27) + or - 1.65 underroot (0.17)(0.83) + 0.27)(0.73)/200
Answer:
[tex](0.17 - 0.27) \pm 1.65\sqrt{\frac{0.17*0.83 + 0.27*0.73}{200}}[/tex], that is, option C
Step-by-step explanation:
From a random sample of 200 people in City C, 34 were found to subscribe to the streaming service. From a random sample of 200 people in City K, 54 were found to subscribe to the streaming service.
This means that the proportions are:
[tex]p_C = \frac{34}{200} = 0.17[/tex]
[tex]p_K = \frac{54}{200} = 0.27[/tex]
Subtraction of proportions:
In the confidence interval, we subtract the proportions. So:
[tex]p = p_C - p_K = 0.17 - 0.27[/tex]
In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following confidence interval of proportions.
[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]
In which
z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].
Standard error:
For a subtraction, as the standard deviation of the distribution is the square root of the sum of the variances, we have that:
[tex]\sqrt{\frac{\pi(1-\pi)}{n}} = \sqrt{\frac{0.17*0.83 + 0.27*0.73}{200}}[/tex]
90% confidence level
So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].
So the confidence interval is:
[tex](0.17 - 0.27) \pm 1.65\sqrt{\frac{0.17*0.83 + 0.27*0.73}{200}}[/tex], that is, option C
Find the value that makes the proportion true
5/6= ?/180
Answer:
D, or 150
Step-by-step explanation:
We can see that we have to multiply 6 by 30 to get 180. So, if we multiply the denominator by this and we want an equal fraction, we can multiply 5 by 30 to get [tex]5\cdot30=150[/tex].
Answer/Step-by-step explanation:
I think its "D. 150"!
-Hope this helped, Comment if you have any other questions!
(a) 14x - 3x + 16 = 7(x - 4)
Solve the linear equation
Answer:
x=-11
Step-by-step explanation:
14x-3x+16=7(x-4)
Distribute
14x-3x+16= 7(x) + 7(-4)
14x-3x+16=7x-28
Combine Like Terms
11x+16=7x-28
Combine like terms
4x+16=-28
Combine like terms
4x=-44
Isolate x
x=-44/4
Simplify
x=-11
If this helps please mark as brainliest