Answer: B, C, E
Step-by-step explanation:
When multiplying or dividing - and + numbers, rules are as follows:
If the signs are the same, equals +
So for division
[tex]\frac{+}{+} =+[/tex] and [tex]\frac{-}{-} =+[/tex]
If signs are different, equals -
[tex]\frac{-}{+}=-[/tex] and [tex]\frac{+}{-} = -[/tex]
Question [tex]-(\frac{8}{2} )[/tex] the number is negative
A. not the same because [tex]\frac{-}{-} =+[/tex] and your question is -
B. yes it is the same because [tex]\frac{+}{-} = -[/tex] and your question is also -
C. yes it is the same because the parenthesis are ok to remove and it doesn't change your answer
D. not the same [tex]\frac{+}{+} =+[/tex] and your question is -
E. yes it is the same because [tex]\frac{-}{+}=-[/tex] and your answer is also -
Find the differential of each function. (a) y = x2 sin 8x dy = X (b) y = 4+ dy =
For part (a), we use the product rule and chain rule of differentiation:
y = x^2 sin(8x)
dy/dx = (2x sin(8x)) + (x^2 cos(8x) * 8)
dy/dx = 2x sin(8x) + 8x^2 cos(8x)
So, the differential of y = x^2 sin(8x) is dy = (2x sin(8x) + 8x^2 cos(8x)) dx.
For part (b), the differential is simply the derivative of y with respect to x, since y is not a function of x in this case:
y = 4+
dy/dx = 0
So, the differential of y = 4+ is dy = 0 dx.
To find the differential of each function, we will use the derivative rules. Let's solve each part step-by-step:
(a) y = x^2 sin(8x)
To find the differential (dy) of this function, we will need to find the derivative of y with respect to x (dy/dx). In this case, we will use the product rule, which states that if y = uv, where u and v are functions of x, then:
dy/dx = u(dv/dx) + v(du/dx)
Let u = x^2 and v = sin(8x).
Now, we need to find du/dx and dv/dx:
du/dx = 2x (by using the power rule)
dv/dx = 8*cos(8x) (by using the chain rule)
Now apply the product rule:
dy/dx = x^2 * 8*cos(8x) + sin(8x) * 2x
dy/dx = 8x^2*cos(8x) + 2x*sin(8x)
So, the differential of the function y = x^2*sin(8x) is dy/dx = 8x^2*cos(8x) + 2x*sin(8x).
(b) y = 4
To find the differential (dy) of this function, we will find the derivative of y with respect to x (dy/dx).
Since y is a constant function (it doesn't depend on x), its derivative is simply:
dy/dx = 0
So, the differential of the function y = 4 is dy/dx = 0.
learn more about differential here: brainly.in/question/13142910
#SPJ11
what kind of math problem is the following: a toy company claims that more then 70% of the toys sold are stuffed animals. a random sample of 500 toys is surveyed. the company finds that 400 are stuffed animals. test the claim at a 1% level of significance. assume the distribution is normal.
The given problem is a hypothesis testing problem, specifically a one-sample proportion test.
The null hypothesis is that the proportion of stuffed animals sold is 0.7, and the alternative hypothesis is that it is greater than 0.7. The sample proportion is 400/500=0.8, and we need to test whether this result is statistically significant at a 1% level of significance. We assume a normal distribution for the sample proportion and use a one-tailed z-test to calculate the p-value and make a conclusion about the null hypothesis.
Know more about hypothesis here:
https://brainly.com/question/29519577
#SPJ11
According to the Empirical Rule. Find specified probability. (Round to FOUR decimal places. Write like 0.1234). P(z<-3.14)
Using a z-table or calculator, we can find that the probability of getting a z-score less than -3.14 is approximately 0.0008 (rounded to four decimal places as requested).
Using the Empirical Rule and the concept of probability, I can help you find the requested probability. The Empirical Rule, also known as the 68-95-99.7 rule, states that for a normal distribution:
- Approximately 68% of the data falls within 1 standard deviation (SD) of the mean
- Approximately 95% of the data falls within 2 SDs of the mean
- Approximately 99.7% of the data falls within 3 SDs of the mean
You are asked to find the probability P(z < -3.14). Since -3.14 is slightly beyond -3 SDs from the mean, we know that less than 0.15% of the data falls in that area, as 99.7% of the data is within ±3 SDs.
However, to get a more precise probability, we need to use a standard normal (Z) table or calculator. When looking up z = -3.14, we find that the probability P(z < -3.14) is approximately 0.0008.
So, the probability you are looking for is 0.0008.
Learn more about probability here:
https://brainly.com/question/11234923
#SPJ11
when joe bowls, he can get a strike (knock down all of the pins) 60 percent of the time. how many times more likely is it for joe to bowl at least three strikes out of four times as it is for him to bowl zero strikes out of four tries? round answer to the nearest whole number.
Joe is about 10 times more likely to bowl at least three strikes out of four tries than to bowl zero strikes out of four tries.
To find the probability of Joe bowling at least three strikes out of four tries, we need to consider the different combinations of strikes and non-strikes he can get.
There are four possible outcomes:
- strike, strike, strike, non-strike
- strike, strike, non-strike, strike
- strike, non-strike, strike, strike
- non-strike, strike, strike, strike
The probability of getting a strike is 0.6, and the probability of not getting a strike (a non-strike) is 0.4. So for each outcome, we can calculate the probability as follows:
- Probability of strike, strike, strike, non-strike = 0.6 x 0.6 x 0.6 x 0.4 = 0.0864
- Probability of strike, strike, non-strike, strike = 0.6 x 0.6 x 0.4 x 0.6 = 0.0864
- Probability of strike, non-strike, strike, strike = 0.6 x 0.4 x 0.6 x 0.6 = 0.0864
- Probability of non-strike, strike, strike, strike = 0.4 x 0.6 x 0.6 x 0.6 = 0.0864
To find the probability of Joe bowling at least three strikes, we need to add up the probabilities of the last three outcomes, since they all have at least three strikes:
0.0864 + 0.0864 + 0.0864 = 0.2592
So the probability of Joe bowling at least three strikes out of four tries is 0.2592, or about 26% (rounded to the nearest whole number).
To find the probability of Joe bowling zero strikes, we can use the same approach:
- Probability of non-strike, non-strike, non-strike, non-strike = 0.4 x 0.4 x 0.4 x 0.4 = 0.0256
So the probability of Joe bowling zero strikes out of four tries is 0.0256, or about 3% (rounded to the nearest whole number).
To find how many times more likely it is for Joe to bowl at least three strikes than to bowl zero strikes, we can divide the probability of the first outcome by the probability of the second outcome:
0.2592 / 0.0256 = 10.125
Know more about probability here:
https://brainly.com/question/30034780
#SPJ11
Solve for x: 92 - 17x = -24
The answer is -4 but I don’t know how to get it. Please show work because I need to understand it
Answer: x=-4
Step-by-step explanation:
i'm assuming that you meant 92-17x=24 instead of -24 because that gives the answer -4
the goal of these equations is to get all the x variables on one side and all of the constants on the other side.
92-17x=-24
92-17x -92 =24 -92
-17x=-68
divide both sides by -17
x = -4
An isosceles triangle has a vertex angle of 80°. A base angle measures
20°
40°
50°
The base angles of the isosceles triangle is A = 50°
Given data ,
Let the isosceles triangle be represented as ΔABC
Now , the measure of ∠ABC = 80°
So , the measure of ∠ACB = ∠BAC = A°
And , In an isosceles triangle, the two equal sides are called legs, and the remaining side is called the base. The angle opposite the base is called the vertex angle
So , A° + A° + 80° = 180°
Subtracting 80 on both sides , we get
2A° = 100°
Divide by 2 on both sides , we get
A = 50°
Hence , each base angle measures 50°
To learn more about isosceles triangles click :
https://brainly.com/question/1900674
#SPJ1
4(x+7)^2-49=-13 square root method
The value of x is -4
What are perfect squares?When an integer by itself , the product obtained is a perfect square. Examples of perfect squares are 25 from 5×5, 36 from 6×6
The square root of the perfect square will give the original number.
Solving 4(x+7)^2-49=-13
collecting like terms
4( x+7)^2 = -13+49
4(x+7)² = 36
divide both sides by 4
(x+7)² = 9
Square both sides
x+7 = √9
x+7 = 3
x = 3-7
x = -4
therefore the value of x is -4
learn more about perfect square from
https://brainly.com/question/26119721
#SPJ1
The two red parallelograms are identical
the two blue parallelograms are identical
what is the area of the parallelogram in the middle outlined in purple?
The area of the parallelogram in the middle outlined in purple is 6 square units
What is the area of the parallelogram in the middleFrom the question, we have the following parameters that can be used in our computation:
The two red parallelograms are identicalthe two blue parallelograms are identicalSo, we have
Red: base = 3 and height = 6Blue: base = 5 and height = 3The area of the parallelogram in the middle is calculated as
Area = base * height
So, we have
Area = (5 - 3) * (6 - 3)
Evaluate
Area = 6
Hence, the area is 6
Read more about area at
https://brainly.com/question/24487155
#SPJ1
answer choices:
A. M+N
B. M*N
C. S+T
D. S*T
E. N+T
F. N^2
Answer:
A, B, E are irrational
Step-by-step explanation:
You want to know which expressions result in an irrational number from the given expressions involving rational and irrational numbers.
A. M+NM + N = √2 +√5 . . . . irrational
B. MNMN = (√2)(√5) = 10 . . . . irrational
C. S+TS + T = 2 + 5 = 7 . . . . rational
D. STST = 2·5 = 10 . . . . rational
E. N+TN + T = √5 + 5 . . . . irrational
F. N²N² = (√5)(√5) = 5 . . . . rational
__
Additional comment
When in doubt, you can use your calculator to evaluate these expressions. If the decimal fraction uses all available digits, the number is likely irrational.
If the number cannot be expressed exactly without using symbols (√, ∛, π, e), then it is irrational. The attached calculator display shows this nicely.
helppppp
64^a = 8^a+2
The solution to the exponential equation 64^a = 8^(a + 2) is given as follows:
a = 2.
How to solve the exponential equation?The exponential equation in this problem is defined as follows:
64^a = 8^(a + 2)
64 is the second power of 8, hence:
64 = 8².
Applying the power of power rule, we have that:
64^a = 8^2a.
Hence:
8^2a = 8^(a + 2)
The exponential function is one to one, hence we can obtain the value of a as follows:
2a = a + 2
a = 2.
More can be learned about exponential equations at https://brainly.com/question/2456547
#SPJ1
amazon gtin error external product id type the sku does not match any asin and contains invalid value(s) for attributes required for creation of a new asin.
Once the issue is resolved, the seller can try to create or match the product with an ASIN again.
This error message is related to Amazon's Global Trade Item Number (GTIN) requirements. Amazon requires that sellers provide valid GTINs (such as UPC, EAN, or ISBN) for their products. The error message indicates that the SKU (Stock Keeping Unit) provided by the seller does not match any existing ASIN (Amazon Standard Identification Number) and contains invalid attribute values required for the creation of a new ASIN.
To fix this error, the seller should check that the SKU and attribute values are correct and that the product has a valid GTIN. The seller may need to obtain a valid GTIN for their product or correct any errors in the attribute values. Once the issue is resolved, the seller can try to create or match the product with an ASIN again.
To learn more about again visit:
https://brainly.com/question/27993468
#SPJ11
consider a sequence of random variables x1 , x2 , . . . , xn that converges in proba- bility to constant a. assume that p (xi > 0)
Given that P(Xi > 0), we can infer that the probability of Xi being positive has implications on the convergence properties of the sequence and the limiting constant 'a'.
Based on the information given, we can say that the probability of xi being greater than zero is positive, i.e., p(xi > 0) > 0. This means that xi has a positive probability of taking values greater than zero.
Moreover, since the sequence of random variables converges in probability to a constant a, we can say that for any ε > 0,
lim P(|xi - a| > ε) = 0
This implies that as n approaches infinity, the probability that xi deviates from a by more than ε approaches zero.
Thus, we can conclude that the sequence of random variables xi is "almost surely" bounded away from zero as n approaches infinity, and the limit of the sequence is the constant a.
. Considering a sequence of random variables X1, X2, ..., Xn that converges in probability to a constant 'a', we can say that the probability of each Xi being greater than 0, denoted as P(Xi > 0), is relevant to understanding the limiting behavior of the sequence.
As the sequence converges in probability to 'a', it means that for any given ε > 0, the probability that the absolute difference between Xi and 'a' is greater than ε approaches 0 as n approaches infinity:
lim (n→∞) P(|Xi - a| > ε) = 0
Given that P(Xi > 0), we can infer that the probability of Xi being positive has implications on the convergence properties of the sequence and the limiting constant 'a'.
learn more about probability
https://brainly.com/question/28920252
#SPJ11
The cylinder below has a volume of 156,000 m What is the length, 1, of the cylinder? Give your answer to the nearest whole number. 25 m Im
The length l meter of the cylinder will be 80 meters on rounding to the nearest whole number.
The volume of cylinder is given by the formula -
Volume = πr²h, where r refers to the radius of the base of cylinder and h is the height of the cylinder. Now, keep the values in formula to find the height or length of the cylinder.
156000 = π× 25² × l
l = 156000/(π × 25 × 25)
Rewriting the equation and performing multiplication
l = 79.45 meters
Rounding to the nearest whole number, the length will be 80 meters.
Hence, the length of the cylinder is 80 meters.
Learn more about cylinder -
https://brainly.com/question/23935577
#SPJ1
The complete question is attached in figure.
Which state is located in the Pacific Northwest?
The Pacific Northwest region of america is located within the upper northwest corner of the united states of america, bordering to the Pacific Ocean. The state this is most generally located in this place is Washington,
That's home to numerous fundamental cities which include Seattle and Olympia. Oregon, that's located simply south of Washington, is also taken into consideration to be part of the Pacific Northwest.
The vicinity is thought for its various geography, which incorporates lush forests, rugged coastlines, and towering mountains such as Mount Rainier and Mount Hood.
The Pacific Northwest is likewise domestic to a vibrant tradition and economy, with industries which include generation, aerospace, and outside pastime gambling massive roles within the place's boom and development.
Learn more about Pacific Northwest region:-
https://brainly.com/question/31127995
#SPJ4
Simplify an expression of the model
An expression for the given model can be simplified as -x - 2.
Given a model.
The model consists of 2 times x and 3 times -x.
This can be written as 2x + (3 × -x) = 2x - 3x = -x
It also consists of some 1's and '-1's.
In the first column, there are 3 1's = 3
Next, there are 2 1's and 1 '-1' = 2 + -1 = 1
Next, there are 3 '-1's = -1 + -1 + -1 = -3
Next also = -1 + -1 + -1 = -3
So summing up all these,
Expression is -x + 3 + 1 - 3 - 3 = -x - 2
Hence the required expression is -x - 2.
Learn more about Expressions here :
https://brainly.com/question/13947055
#SPJ1
What are the domain and range of the exponential function below?
F(x) = 5x + 6
O A. Domain: All real numbers
O
Range: All real numbers greater than 6
B. Domain: All real numbers greater than 0
Range: All real numbers greater than 0
OC. Domain: All real numbers greater than 0
Range: All real numbers greater than 6
D. Domain: All real numbers
Range: All real numbers greater than 0
If "exponential-function" is "5ˣ + 6", then (a) Domain: All real numbers
Range: All real numbers greater than 6.
The "Domain" of an exponential function is all real numbers, since any real number can be raised to a power. The range, depends on the value of the base and any vertical shift that is applied to the function.
In the given function F(x) = 5ˣ + 6, the base is 5 which is greater than 1. Therefore, as x approaches negative infinity, F(x) approaches 6, and as x approaches positive infinity, F(x) grows without bound.
It means that the range of the function is all real-numbers greater than 6.
Therefore, the correct option is (a).
Learn more about Domain and Range here
https://brainly.com/question/27242650
#SPJ1
The given question is incomplete, the complete question is
What are the domain and range of the exponential function below?
F(x) = 5ˣ + 6,
(a) Domain: All real numbers
Range: All real numbers greater than 6
(b) Domain: All real numbers greater than 0
Range: All real numbers greater than 0
(c) Domain: All real numbers greater than 0
Range: All real numbers greater than 6
(d) Domain: All real numbers
Range: All real numbers greater than 0
What is the equation of a line perpendicular to this line x+4y=-2
Step-by-step explanation:
solve for y
x-4y =24
-4y = 24-x
y = x/4 - 6 slope = 1/4, the coefficient of the x term
a perpendicular line has the negative inverse, change the sign and flip the fraction upside down to get -4/1 or -4
y=-4x + b. plug in the point x=-2, y=7 to calculate b the y intercept
7=-4(-2) + b
b = 7-8 =-1
y=-4x -1 is the perpendicular line through (-2,7)
general equation in slope intercept form is y=mx +b. m=-4, b=-1
What value of x makes the equation 3(x-6)-2+5(2x+1) true?
The solution of the linear equation 3(x - 6) - 8x = 2 + 5*(2x + 1) is x = -5/3
What value of x makes the equation true?Here we want to solve the equation:
3(x - 6) - 8x = 2 + 5*(2x + 1)
First, simplify both sides:
3x - 18 - 8x = 2 + 10x + 5
-5x - 18 = 10x + 7
Now group like terms:
-18 - 7 = 10x + 5x
-25 = 15x
-25/15 = x
-5/3 = x
That is the solution.,
Learn more about linear equations at.
https://brainly.com/question/1884491
#SPJ1
{1138-1272} - {-1250+ 1138}
Answer: its-134
Step-by-step explanation:
first you find both of the numbers then subtract the answers to both
How many solutions does 5=-5
Answer:
No solution
Step-by-step explanation:
How many solutions does 5 = -5 ?
5 ≠ -5
So, there is no solution
The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3 minutes. Find the probability that a customer has to wait more than 4 minutes.
To find the probability that a customer has to wait more than 4 minutes, we need to use the normal distribution and standard deviation.
If the manager knows the standard deviation, we can use it to calculate the z-score and find the probability using a standard normal distribution table. However, since the standard deviation is not given in this question, we will assume that the distribution of waiting times is approximately normal and use the empirical rule.
The empirical rule states that for a normal distribution, approximately 68% of the values lie within one standard deviation of the mean, approximately 95% lie within two standard deviations, and approximately 99.7% lie within three standard deviations.
Since the average time that customers wait is 3 minutes, and we want to find the probability that a customer waits more than 4 minutes, we need to calculate how many standard deviations away from the mean 4 minutes is.
z = (x - μ) / σ
where x = 4, μ = 3, and σ is the standard deviation. Since we don't know the value of σ, we can't calculate the z-score directly. However, we can make a reasonable assumption that the standard deviation is around 1 minute. This is based on the empirical rule which states that approximately 68% of the values lie within one standard deviation of the mean.
So, σ = 1 minute, and
z = (4 - 3) / 1 = 1
Now we can use a standard normal distribution table to find the probability of a z-score of 1 or greater. From the table, we can see that the probability of a z-score of 1 or greater is approximately 0.1587.
Therefore, the probability that a customer has to wait more than 4 minutes is approximately 0.1587 or 15.87%.
To find the probability that a customer at the fast-food restaurant has to wait more than 4 minutes, we'll use the exponential distribution.
1. First, let's find the rate parameter, which is the reciprocal of the average waiting time: λ = 1 / average waiting time. In this case, λ = 1 / 3 ≈ 0.3333.
2. Now, we'll use the cumulative distribution function (CDF) of the exponential distribution to find the probability of waiting less than or equal to 4 minutes: P(X ≤ 4) = 1 - e^(-λx) = 1 - e^(-0.3333 × 4) ≈ 0.7364.
3. To find the probability of waiting more than 4 minutes, subtract the CDF value from 1: P(X > 4) = 1 - P(X ≤ 4) = 1 - 0.7364 ≈ 0.2636.
So, the probability that a customer at the fast-food restaurant has to wait more than 4 minutes is approximately 0.2636 or 26.36%.
Visit here to learn more about standard deviation:
brainly.com/question/23907081
#SPJ11
Real works 36 hours a week and makes $612. Tatum works 34 hours a week and makes $663 who makes more per hour how do you know?
Tatum earns more than Real.
We have,
Real works 36 hours a week and makes $612.
Tatum works 34 hours a week and makes $663
So, per hour earning of Real is
= 612 / 36
= $17
and, per hour earning of Tatum is
= 663 / 34
= $19.5
Thus, Tatum earns more than Real.
Learn more about Unitary Method here:
https://brainly.com/question/22056199
#SPJ1
What is the mean number of moons?
Step-by-step explanation:
Use the graph to solve -x^2+2x+3=0. Select all solutions that apply.
x = -1 and x = 3 are the solutions to the equation [tex]-x^2+2x+3=0[/tex].
To solve the quadratic equation[tex]-x^2+2x+3=0[/tex], we can use the quadratic formula:
[tex]x = \frac{(-b \pm \sqrt{b^2 - 4ac)} }{2a}[/tex]
In this case, a = -1, b = 2, and c = 3, so we can substitute these values into the formula:
[tex]x = \frac{(-2 \pm \sqrt{2^2 - 4*1*3)} }{2*-1}[/tex]
x = (-2 ± sqrt(16)) / (-2)
x = (-2 ± 4) / (-2)
Simplifying this expression, we get:
x₁ = (-2 + 4) / (-2) = -1
x₂ = (-2 - 4) / (-2) = 3
Therefore, the solutions to the equation [tex]-x^2+2x+3=0[/tex] are x = -1 and x = 3.
Learn more about Quadratic equations here:
https://brainly.com/question/22364785
#SPJ1
need help with all 3 show work
The values of the trigonometry are as follows
8. cos x = 9/17
10. sin x = 0.8
12. cos x = 4/5
How to find the cos of angle with the given sinFrom trigonometry: cos² x + sin² x = 1
Let the angle be x
8.
cos² x + sin² x = 1
cos² x + (4√13)/17 = 1
cos² x = 1 - (4√13)/17
cos² x = 81 / 289
cos x = √(81 / 289)
cos x = 9/17
10.
sec x = 5/3 and sec x = 1 / cos x, therefore
cos x = 3/5
x = arc cos 3/5
x = 53.1301
sin x = 0.8
12.
sec x = 5/4 and sec x = 1 / cos x, therefore
cos x = 4/5
Learn more about trigonometry at
https://brainly.com/question/24349828
#SPJ1
The owner of the Good Deals Store opens a new store across town. For the new store, the owner estimates that, during business hours, an average of 90 shoppers per hour enter the store and each of them stays an average of 12 minutes. If the average number of shoppers in the original store at any time was 45, then the average number of shoppers in the new store at any time is what percent less than the average number of shoppers in the original store at any time?
A. 60
B. 70
C. 80
D. 50
To solve this problem, we need to first find the average number of shoppers in the new store at any time.
We know that during business hours, 90 shoppers per hour enter the store and each stays an average of 12 minutes.
To find the average number of shoppers at any time, we need to convert the time each shopper spends in the store to hours:
12 minutes = 0.2 hours
So, on average, each shopper takes up 0.2 hours in the store.
Therefore, the average number of shoppers in the new store at any time is:
90 shoppers/hour x 0.2 hours/shopper = 18 shoppers
Now we can find the percent less that the average number of shoppers in the new store is compared to the original store:
Percent less = (Original - New) / Original x 100%
Percent less = (45 - 18) / 45 x 100%
Percent less = 27 / 45 x 100%
Percent less = 60%
So the answer is A. 60.
To find the average number of shoppers in the new store at any time, we can use the formula:
Average number of shoppers at any time = (Number of shoppers per hour * Average time spent in store) / 60
For the new store:
Average number of shoppers at any time = (90 shoppers per hour * 12 minutes) / 60
Average number of shoppers at any time = 1080 / 60 = 18 shoppers
Now we will find the percentage difference between the average number of shoppers in the original store (45 shoppers) and the new store (18 shoppers):
Percentage difference = ((Original store shoppers - New store shoppers) / Original store shoppers) * 100
Percentage difference = ((45 - 18) / 45) * 100
Percentage difference = (27 / 45) * 100 = 60%
So the average number of shoppers in the new store at any time is 60% less than the average number of shoppers in the original store at any time. Your answer: A. 60
Visit here to learn more about average brainly.com/question/27646993
#SPJ11
Question 3 (4 marks) Name and find the critical values of x? 2 n14 a = 0.005 x² n=8 a = 0.01 x2 n=18 a = 0.02
The critical values of x are 31.319, 18.475, and 28.869 for each case respectively.
To find the critical values of x (x₂), we'll use the chi-square distribution table. The critical values depend on the degrees of freedom (df) and the significance level (α).
1. For n=14 and α=0.005:
Degrees of freedom (df) = n - 1 = 14 - 1 = 13
From the chi-square table, x₂ (13, 0.005) ≈ 31.319
2. For n=8 and α=0.01:
Degrees of freedom (df) = n - 1 = 8 - 1 = 7
From the chi-square table, x₂ (7, 0.01) ≈ 18.475
3. For n=18 and α=0.02:
Degrees of freedom (df) = n - 1 = 18 - 1 = 17
From the chi-square table, x₂ (17, 0.02) ≈ 28.869
Know more about critical values here:
https://brainly.com/question/30168469
#SPJ11
Talia claims that
the surface area of the cylinder is about 2,285.92
square centimeters. Explain Talia's error. Find the
correct surface area of the cylinder using the picture below.
The correct surface area of the cylinder is 878.06 sq. cm.
From the net of the cylinder we have the diameter of the circular bases of the cylinder.
So, the radius of the circle would be,
r = 13/2
Using the formula for area of circle the surface area of two circular bases would be,
A₁ = 2 × π × r²
A₁ = 2 × π × (13/2)²
A₁ = π × 169/2
A₁ = 265.46 sq. cm.
The length of the rectangle would be equal to the circumference of the circle.
So, the length of the rectangle would be,
l = 2× π × r
l = 2× π × (13/2)
l = 13 × π
l = 40.84 cm
Using the formula for the area of rectangle,
A₂ = l × w
A₂ = 40.84 × 15
A₂ = 612.6 sq. cm.
So, the total surface area of the cylinder would be,
A = A₁ + A₂
A = 265.46 + 612.6
A = 878.06 sq. cm.
This means that the surface area claimed by Talia is incorrect.
Therefore, the correct surface area of the cylinder = 878.06 sq. cm.
Learn more about the surface area of cylinder here:
https://brainly.com/question/22074027
#SPJ1
Three times the square root of 2 equals the square root of the sum of some number and 8. Find the number.
Answer:
10
Step-by-step explanation:
You want a number such that the square root of the sum of it and 8 is 3 times the square root of 2.
EquationThe relation in the problem statement is ...
√(x +8) = 3√2
SolutionSquaring both sides, we have ...
x +8 = 3²·2 = 18
x = 10 . . . . . . . . . subtract 8
The number is 10.
<95141404393>
Points (-3,6 ) (-2,9 ) the equation in point slope form step by step
The equation in point slope form is y -6 = 3(x + 3)
(x₁, y₁) = (-3, 6)
(x₂, y₂) = (-2, 9)
Slope of the line,
m = (y₂ - y₁)/(x₂ - x₁)
m = (9 - 6)/(-2 - -3)
m = 3
Therefore, the equation in point slope form is given as,
(y - y₁) = m(x - x₁)
y - 6 = 3(x - -3)
y -6 = 3(x + 3)
To learn more about equation in point slope form, click:
https://brainly.com/question/28934380
#SPJ1