I= nE/nr+R , solve for n

Answer:

412 ft³

Step-by-step explanation:

Diameter = 5 ft

Radius = D/2 = 5/2 = 2.5 ft

Volume of a Cylinder = 2πr²*h

Plug in values

2(3.14)(2.5)^2*21 = 412.33 ft^3

Volume of the pipe is 412 cubic feet rounded to nearest whole number.

The volume of the cylindrical construction pipe is 330 cubic feet.

To find the volume of a cylindrical construction pipe, we can use the formula:

Volume = π * [tex](radius)^2[/tex] * height

Given that the diameter is 5 ft, the radius of the pipe is half of the diameter, which is 2.5 ft.

The height of the pipe is given as 21 ft.

Plugging these values into the volume formula:

Volume = 3.14 *[tex](2.5)^2[/tex] * 21 = 330 ft³

Therefore, the volume of the cylindrical construction pipe is 330 cubic feet.

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Answer: the bus traveled 144 miles at a speed of 60 miles per hour and 144 miles at a speed of 40 miles per hour

Step-by-step explanation:

The bus traveled at an average rate of 60 miles per hour and then reduced its average rate to 40 miles per hour for the rest of the trip.

Let x miles = distance travelled at 60 miles per hour.

Let y miles = distance travelled at 40 miles per hour.

Total distance travelled = 288 miles.

Therefore,

x + y = 288 - - - - - - - 1

Total time spent in travelling 288 miles = 6 hours

Speed = distance /time

Time = distance / speed

Time spent when travelling x miles at a speed of 60 miles per hour = x/60

Time spent when travelling y miles at a speed of 40 miles per hour = y/40

Since total time is 6 hours, this means that

x/60 + y/40 = 6

(2x + 3y)/120 = 6

2x + 3y = 6 × 120 = 720 - - - - - - - 2

Substituting x = 288-y from equation 1 into equation 2, it becomes

2(288-y) + 3y= 720

576 - 2y + 3y = 720

- 2y + 3y = 720 - 576

y = 144 miles

x = 288 - y = 288-144

x = 144 miles

Answer:

Answer is a continuous random variable x the height of the function named the probability density function f(x)

Step-by-step explanation:

A continuous random variable takes infinite number of possible values.

example include  height , weight amount of sugar in an orange time required to run a mile.

Continues random variable named probability function f(x).

The height of a function at a certain value of x in the case of a continuous random variable represents the probability density at that point, not the actual probability. The area under the curve of the function between two points gives the actual probability that x falls between those points. The total probability (the total area under the curve) is always 1.

For a continuous random variable x, the height of the function at a certain value of x is named the probability density function f(x) which describes the probabilities for continuous random variables. The value does not represent a direct probability but the density of probability around that point, and the area under the curve between two given points gives the probability that x would fall between those points. This is represented by the notation P(c < x < d), where c and d are the boundaries of the interval.

It is essential to note that for any specific value of a continuous random variable, the probability is always 0, represented as P( x = c )= 0, which means the height of the function at a particular x does not represent the exact probability at that point but just the density.

The total probability of a continuous random function is always 1, thus, the total area under the probability density function curve equals one. And the value of the function at any given point can be less or greater than 1 given the function's shape and range.

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Answer:

Step-by-step explanation:

a³-b³=(a-b)(a²+ab+b²)

6³-1=6³-1³=(6-1)(6²+6*1+1²)=5×43

so 6³-1 is divisible by 5.

[tex]\displaystyle 6^3 - 1 = 216 - 1 = 215[/tex]

The number 215 is divisible by 5 because it ends in 5, according to the divisibility rules.

I am joyous to assist you anytime.

Answer:

Since we FAIL to reject the null hypothesis, then if we construct an interval of 95% of confidence, the 0 should be included, because on the test hypothesis we conclude that there would be no significant difference between the means of the two groups analyzed, and the results obtained on the hypothesis test needs to be consistent with the confidence interval.

Step-by-step explanation:

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

[tex]\bar x_{meat}=111.7[/tex] represent the sample mean of calories for the meat hot dogs

[tex]\bar x_{beef}=135.4[/tex] represent the sample mean of calories for the beef hot dogs

The system of hypothesis on this case would be:

Null hypothesis: [tex]\mu_{meat}-\mu_{beef}=0[/tex]

Alternative hypothesis: [tex]\mu_{meat}-\mu_{beef}\neq 0[/tex]

On this case we have the p value obtained, after calculate the statistic and we got that [tex]p_v =0.124[/tex] if we select a 5% significance level [tex]\alpha=0.05[/tex] we see that [tex]p_v >\alpha[/tex] and on this case we can FAIL to rejec the null hypothesis, so there is not a significant difference between the mean of the two tpes of hot dogs analyzed at 5% of significance.

And since we FAIL to reject the null hypothesis, then if we construct an interval of 95% of confidence, the 0 should be included, because on the test hypothesis we conclude that there would be no significant difference between the means of the two groups analyzed, and the results obtained on the hypothesis test needs to be consistent with the confidence interval.

A 95% confidence interval for μMeat - μBeef including 0 indicates no significant difference in calorie content between meat and beef hot dogs.

A 95% confidence interval for μMeat - μBeef that includes 0 suggests that there is no significant difference in the mean calorie content between meat and beef hot dogs. In this case, the difference in mean calorie content between the two types of hot dogs is not statistically significant, as the null hypothesis is not rejected. The P-value of 0.124 suggests that there is a 12.4% chance of observing a difference in mean calorie content as extreme as the one observed if the null hypothesis were true. Therefore, we cannot conclude that there is a significant difference in the mean calorie content between meat and beef hot dogs.

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Answer:I think this is the nswer

Step-by-step explanation:

C. Your carpet is ruined because your roommate negligently left her wet boots, umbrella, and raincoat

sitting in a pile on the rug all afternoon

The statement of rain-related losses that WOULD be covered under this renters insurance policy is when your mattress is ruined because part of the apartment's roof blew off during a major rainstorm, creating a stream of water landing directly on your bed.

Basically, the renter's insurance is similar to the homeowner's insurance, but it is for people who rent or lease properties, such as houses and apartments. A renter's insurance refers to an insurance policy that can cover theft, water backup damage, certain natural disasters, bodily injuries and more in a rented property.

If we rent an apartment, home or even a dorm, the renter's insurance are more recommended for protecting your space and belongings in the event of a covered accident. Therefore, the Option B is correct.

Missing options "a. Your laptop is ruined because you left your window open during a moderate rain shower b. Your mattress is ruined because part of the apartment's roof blew off during a major rainstorm, creating a stream of water landing directly on your bed C. Your carpet is ruined because your roommate negligently left her wet boots, umbrella, and raincoat sitting in a pile on the rug all afternoon D. You lose a day's wages because a horrible rainstorm makes it impossible to get to your job"

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Answer:  The correct option is

(A)  If F and G differ by a constant, then f = g.

Step-by-step explanation:  According to the given condition, we have

[tex]F'(x)=f(x)~~~\textup{and}~~~G'(x)=g(x).[/tex]

We are to select the correct statement.

Let F(x) = p(x)  and  G(x) = p(x) + c, c - constant.

Then, we get

[tex]F'(x)=p'(x)~~~\textup{and}~~~G'(x)=p'(x).[/tex]

Therefore,

[tex]F'(x)=G'(x)\\\\\Rightarrow f(x)=g(x)\\\\\Rightarrow f=g.[/tex]

Thus, if F and G differ by a constant, then f = g.

Option (A) is CORRECT.

Answer:

sin2θ = -24/25

cos2θ = 7/25

tan2θ =  -24/7

Step-by-step explanation:

sinθ = 3/5

θ is in Quadrant II. So 2θ is in Quadrant III or IV. So sin2θ is negative. Nothing can be said about cos and tan yet.

sin135 = 0.707 > 3/5.

So θ > 135.

2θ lies in Quadrant IV. So cos2θ is positive and tan2θ is negative.

cosθ = √(1 - sin²θ)

        = -4/5

sin2θ = 2sinθcosθ = 2x(3/5)x(-4/5) = -24/25

cos2θ = 1 - 2sin²θ = 1 - 2x(3/5)² = 7/25

tan2θ = sin2θ/cos2θ = -24/7

Answer:

The answer to your question is below

Step-by-step explanation:

pH definition

                         pH = - log [H⁺]

a) For pH = 2.4, solution A

                       2.4 = -log[H⁺]

                      [H⁺] = antilog⁻².⁴

                      [H⁺] = 0.00398

  For pH = 9.4, solution B

                       [H⁺] = antilog⁻⁹.⁴

                       [H⁺] = 3.98 x 10⁻¹⁰

b) Divide hydrogen-ion concentration of solution A by hydrogen-ion concentration of solution B.

                             0.00398 / 3.98 x 10⁻¹⁰

                             10000000 times

c) By 7, because 7 is the number of zeros

Answer:

  $91.76

Step-by-step explanation:

Interest the first month was ...

  I = Prt

  I = $15000(0.0387)(1/12) = $48.375 ≈ $48.38

Interest in the second month was ...

  I = $15000(0.0347)(1/12) = $43.375 ≈ $43.38

So the total interest amount is ...

  $48.38 +43.38 = $91.76

Marcella earned $91.76 in two months.

_____

Comment on rounding

We have assumed that Marcella's account statement will report the interest rounded to 2 decimal places (cents). Hence she obtains the benefit from rounding for both months.

If there is no statement, so that rounding is not required until the end of the second month, then she may not have that extra penny in her account.

The inequality is: 5>x≥0

Step-by-step explanation:

We have to write the inequality one by one

The inequality symbols are used to write inequalities.

So,

5 is greater than x will be written as:

5>x

And

0 is less than or equals to x:

0≤x or x≥0

We have to combine the both inequalities so that the variable is not repeated. The inequality symbols have to be written carefully while writing the compound inequalities.

5>x≥0

Keywords: Inequality, Relationships

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Answer:

6 cups

Step-by-step explanation:

[tex](18 \times \frac{2}{3} ) \div 2 = [/tex]

[tex]12 \div 2 = [/tex]

[tex]6[/tex]

Answer:

a) 95.99%

b) 4.01%

c) 00.62%

Step-by-step explanation:

Explanation is given in the attachments.

Answer:

f(t) = 250[tex]e^{-0.007752t}[/tex]

Step-by-step explanation:

Let f(t) = [tex]\alpha[/tex][tex]e^{\beta t }[/tex]

where f is the amount of radioactive substance in grams

and t is the time in minutes

initially (at t=0), f = 250 grams

⇒f(0) = 250 grams

⇒[tex]\alpha[/tex][tex]e^{0\beta}[/tex] = 250

⇒[tex]\alpha[/tex][tex]e^{0}[/tex] = 250

⇒[tex]\alpha[/tex] = 250 grams {∵[tex]e^{0} = 1[/tex]}

⇒f(t) = 250[tex]e^{\beta t }[/tex]

At t = 250 minutes, f = 36 grams

⇒f(250) = 36 grams

⇒250[tex]e^{250\beta}[/tex] = 36

⇒[tex]e^{250\beta}[/tex] = [tex]\frac{36}{250}[/tex] = 0.144

⇒250[tex]\beta[/tex] = ㏑ 0.144 = -1.938

⇒[tex]\beta[/tex] = -[tex]\frac{1.938}{250}[/tex] = -0.007752 [tex]min^{-1}[/tex]

∴f(t) = 250[tex]e^{-0.007752t}[/tex]

Answer:

A=(-1,3)

B=(5,3)

C=(5,-5)

Step-by-step explanation:

Answer:

The answer to your question is (2, -1)

Step-by-step explanation:

1.- Find half points

AB

Between A and B there are 6 units, then the half point is three units from point A to the right

                                (2, 3)

BC

Between B and C there are 8 units, then the half point is four units below the point B.

                               (5, -1)

AC

Xm = -1 + 5 / 2 = 4 / 2 = 2

Ym = 3 - 5 / 2 = - 2 / 2 = - 1

                               (2, -1)

2.- Find the equations of the mediatrices

AB

          x = 2                     because the line must be perpendicuar to AB

BC

          y = - 1                    because the line must be perpendicular to BC

AC

          slope        m =[tex]\frac{-5 - 3}{5 + 1}[/tex]

                           m = [tex]\frac{-8}{6}[/tex]

                           m = [tex]\frac{-4}{3}[/tex]

mediatrix AC

                           y + 1 = -4/3 (x -2)

                          3y + 3 = -4x + 8

                           4x + 3y = 8 - 3

                           4x + 3y = 5

3.- Find the circumcenter

When x = 2

                         4(2) + 3y = 5

                           8 + 3y =5

                                 3y = 5 - 8

                                 3y = -3

                                   y = -3/3

                                   y = -1

When y = -1

                        4x + 3(-1) = 5

                        4x - 3 = 5

                        4x = 5 + 3

                        4x = 8

                        x = 8/4

                       x = 2

Circumcenter    (2, -1)

Answer:

Option d is right

Step-by-step explanation:

Given that a  local news agency conducted a survey about unemployment by randomly dialing phone numbers until they had gathered responses from 1000 adults in their state. In the survey, 19% of those who responded said they were not currently employed. In reality, only 6% of the adults in the state were not currently employed at the time of the survey.

The reason more approporiate woul dbe

(d) The difference is due to nonresponse bias. Adults who are employed are less likely to be available for the sample than adults who are unemployed.

would be the correct option.

Adults who are employed will lie is absurd may be reverse true.  Since survey done for adults, eligible teenagers also included.  Voluntary response is also wrong as given 1000 persons selected.

The difference in percentages is due to sampling variability. Random sampling may not perfectly represent the population, resulting in differences in the percentages.

The difference in percentages is best explained by (a) sampling variability. When conducting a survey, it is expected that there will be some variability between the sample results and the true population values. Even with random sampling, there is a chance that the sample may not perfectly represent the entire population. In this case, the survey respondents may not be an accurate reflection of the overall population, resulting in a difference in the percentages.

For example, if the survey happened to include a higher proportion of unemployed individuals in the sample, the percentage of unemployed respondents would be higher than the true population percentage.

Sampling variability is common in statistics and can be mitigated by increasing the sample size to reduce the margin of error.

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Answer:

[tex]\overline {JL} \cong \overline{MO}[/tex] is the only correct statement.

Step-by-step explanation:

When the two triangles are congruent then their Vertices are correspondence to each other. the correspondence of vertices are as

For, Δ JKL ≅ Δ MNO

J ↔ M

K ↔ N

L ↔ O

The true statement with respect to the correspondence are as

For, Δ JKL ≅ Δ MNO

∠JKL ≅ ∠MNO

∠JLK ≅ ∠MON

∠KJL ≅ ∠NMO

[tex]\overline {JL} \cong \overline{MO}[/tex]

[tex]\overline {KL} \cong \overline{NO}[/tex]

[tex]\overline {JK} \cong \overline{MN}[/tex]        

These all are corresponding parts of congruent triangles (c.p.c.t).

Answer:3 significant figures

Step-by-step explanation:got it right!!

Answer: A sixty day supply of cat food for her two cats will cost her $125

Step-by-step explanation:

Carol has two cats Rover and Bobo.

Let x = the quantity of a can of fast food.

Rover eats three fourths of a can of cat food each day. This means that Rover eats 3x/4 each day. Bobo eats a half of a can of cat food each day. This means that bobo eats x/2 each day.

Cat food costs five dollars for three cans. This means that 3x = 5

Total number of cans consumed by both dogs in a day is 3x/4 + x/2 =5x/4

That means the cost per day would be

(5x/4 × 5)/3x = 25x/4 ×1/3x

= 25/12

It costs her $25/12 per day

To determine the cost for 60 days, we would multiply the cost per day by 60. It becomes

25/12 × 60 = $125

Answer:

0.8802

Step-by-step explanation:

given that the Police estimate that 84​% of drivers wear their seatbelts.

when they stop 140 cars, no of trials = no of cars checked = 140

Each car is independent of the other

Hence X no of cars with drivers wearing seat belts is binomial with p = 0.85

Required probability =

the probability they find at least 27 drivers not wearing their​ seatbelts

Since normal approximation is required we can approximate to

X is Normal with mean = np = [tex]140(0.84)\\=117.6[/tex]

std dev = [tex]\sqrt{npq} =4.338[/tex]

Required probability =atelast 27 drivers not wearing their​ seatbelts

= P(X>(140-27))

= P(X>113)

[tex]=P(X>112.5)\\=1- 0.1198\\=0.8802[/tex]

Answer:

a) 0.4452

b) 0.0548

c) 0.0501

d) 0.9145

e) 6.08 minutes or greater

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4.7 minutes

Standard Deviation, σ = 0.50 minutes.

We are given that the distribution of length of the calls is a bell shaped distribution that is a normal distribution.

Formula:

[tex]z_{score} = \displaystyle\frac{x-\mu}{\sigma}[/tex]

a) P(calls last between 4.7 and 5.5 minutes)

[tex]P(4.7 \leq x \leq 5.5) = P(\displaystyle\frac{4.7 - 4.7}{0.50} \leq z \leq \displaystyle\frac{5.5-4.7}{0.50}) = P(0 \leq z \leq 1.6)\\\\= P(z \leq 1.6) - P(z <0)\\= 0.9452 - 0.5000 = 0.4452 = 44.52\%[/tex]

[tex]P(4.7 \leq x \leq 5.5) = 44.52\%[/tex]

b) P(calls last more than 5.5 minutes)

[tex]P(x > 5.5) = P(z > \displaystyle\frac{5.5-4.7}{0.50}) = P(z > 1.6)\\\\P( z > 1.6) = 1 - P(z \leq 1.6)[/tex]

Calculating the value from the standard normal table we have,

[tex]1 - 0.9452 = 0.0548 = 5.48\%\\P( x > 5.5) = 5.48\%[/tex]

c) P( calls last between 5.5 and 6 minutes)

[tex]P(4.7 \leq x \leq 5.5) = P(\displaystyle\frac{5.5 - 4.7}{0.50} \leq z \leq \displaystyle\frac{6-4.7}{0.50}) = P(1.6 \leq z \leq 2.6)\\\\= P(z \leq 2.6) - P(z <1.6)\\= 0.9953 - 0.9452 = 0.0501 = 5.01\%[/tex]

[tex]P(5.5 \leq x \leq 6) = 5.01\%[/tex]

d) P( calls last between 4 and 6 minutes)

[tex]P(4 \leq x \leq 6) = P(\displaystyle\frac{4 - 4.7}{0.50} \leq z \leq \displaystyle\frac{6-4.7}{0.50}) = P(-1.4 \leq z \leq 2.6)\\\\= P(z \leq 2.6) - P(z <-1.4)\\= 0.9953 - 0.0808 = 0.9145 = 91.45\%[/tex]

[tex]P(4 \leq x \leq 6) = 91.45\%[/tex]

e) We have to find the value of x such that the probability is 0.03.

P(X > x)  

[tex]P( X > x) = P( z > \displaystyle\frac{x - 4.7}{0.50})=0.03[/tex]  

[tex]= 1 -P( z \leq \displaystyle\frac{x - 4.7}{0.50})=0.03 [/tex]  

[tex]=P( z \leq \displaystyle\frac{x - 4.7}{0.50})=0.997 [/tex]  

Calculation the value from standard normal z table, we have,  

P(z < 2.75) = 0.997

[tex]\displaystyle\frac{x - 4.7}{0.50} = 2.75\\x = 6.075 \approx 6.08[/tex]  

Hence, the call lengths must be 6.08 minutes or greater for them to lie in the highest 3%.

The fraction of calls that last between 4.7 and 5.5 minutes is 0.4452, the fraction of calls that last more than 5.5 minutes is 0.0548, the fraction of calls that last between 5.5 and 6 minutes is 0.0501, the fraction of calls that last between 4 and 6 minutes is 0.9145, and the length of the longest 3% of the calls is 5.85 minutes.

To solve this problem, we can use the standard normal distribution table by converting the given values into z-scores. The z-score formula is: z = (x - μ) / σ where x is the given value, μ is the mean, and σ is the standard deviation. Let's calculate the fractions for each part of the question:

(a) Between 4.7 and 5.5 minutes:

(b) More than 5.5 minutes:

(c) Between 5.5 and 6 minutes:

(d) Between 4 and 6 minutes:

(e) The longest 3% of the calls:

So, the time for the longest 3% of the calls is 5.85 minutes.

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Answer:

[tex]\frac{dh}{dt}[/tex]≅[tex]0.286\frac{ft^{3} }{min}[/tex]

Step-by-step explanation:

[tex]V=\frac{\pi }{3}r^{2}h[/tex]; rate of change [tex]\frac{dV}{dt}=10\frac{ft^{3} }{min}[/tex], we must find the rate of change of the depth [tex]\frac{dh}{dt} =?;h=8ft[/tex]

5h=12r; [tex]V=\frac{\pi }{3}\({\((5h}/12} )} ^{2}h=\frac{\pi }{3}(\frac{25h^{2} }{144})h; V=\frac{25\pi h^{3}}{432}[/tex]; deriving [tex]\frac{dV}{dt} = \frac{25\pi }{432}(3h^{2})\frac{dh}{dt}[/tex] → [tex]10=\frac{25\pi h^{2}}{144} \frac{dh}{dt}[/tex] → h=8 then [tex]\frac{dh}{dt}=\frac{1440}{25\pi 64}=\frac{9}{10\pi}[/tex]≅ 0.286[tex]\frac{ft^{3} }{min}[/tex]

Answer: option B is the correct answer

Step-by-step explanation:

The diagram of the tree is shown in the attached photo. The triangle ABC formed is not a right angle triangle. The last angle, angle C is gotten by subtracting the sum of angle A and angle B from 180(sum of angles) in a triangle is 180). It becomes

C = 180-(98+24)= 180 -122

C = 58 degrees

To find the height of the tree, we would apply the sine rule

a/sinA = b/sin B = c/ sinC

We would apply b/sin B = c/ sinC

b/sin24 = 27/sin58

b/0.4067 = 27/0.8480

Cross-multiplying,

27 ×0.4067 = b × 0.8480

10.9809 = 0.8480b

b = 10.9809/0.8480 = 12.949

Approximately 13 meters

The bug crawls 13 meters from the base to the top of the tree

Answer:

  1770

Step-by-step explanation:

No calculator is needed.

When you fill in the numbers, you get ...

  1 = (x/1770)^(-0.8)

The only way the value will be 1 is if the fraction is 1:

  x/1770 = 1

The only way the fraction will be 1 is x = 1770.

1770 mg Zn ions per liter will be lethal in 1 minute.

_____

Check

You know the answer will be slightly more than 1743 from your answer to the second part of the first question.

In a normal distribution, the back-to-knee lengths that separate significant values from others are 24.896 inches (upper percentile) and 19.304 inches (lower percentile) respectively. Using these limits, a back-to-knee length of 24.2 inches is not considered significantly high.

To find the back-to-knee lengths that separate significant values from those that are not, we need to find the values of x for which P(x ≥ some value) ≤ 0.01, and P(x ≤ some value) ≤ 0.01.

These values are known as the upper and lower percentiles, respectively, and can be obtained by transforming to a standard normal distribution (with a mean of 0 and a standard deviation of 1) using z-scores.

Let's use the standard normal table to find z-scores corresponding to 0.01 in the upper side and lower side of the distribution. You would find that the z-score which has an area of 0.01 in the upper tail is approximately 2.33, and in the lower tail it is -2.33.

Now, we can use these z-scores to calculate respective back-to-knee lengths. The formula for a z-score is z = (x - μ) / σ, where μ is the mean, σ is the standard deviation, and x is the observation. Solving for x gives us x = zσ + μ.

Upper percentile, x = (2.33*1.2) + 22.1 = 24.896 inches.

Lower percentile, x = (-2.33*1.2) + 22.1 = 19.304 inches.

So, any back-to-knee length above 24.896 inches or below 19.304 inches can be considered statistically significant. Therefore, a back-to-knee length of 24.2 inches would not be considered significantly high as it is less than 24.896 inches.

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In order to find the separating lengths for significant values in a normal distribution, we need to find the values corresponding to z-scores for probabilities 0.01 and 0.99. To know if a back-to-knee length of 24.2 in. is significantly high, compare the probability P(X>=24.2) with 0.01.

In the problem presented, the information is about the normal distribution of the back-to-knee length of a group of adults. A normal distribution graph has its highest point at the mean, which in this case is 22.1 in., and it decrease on either side. The standard deviation, which measures the spread of the values, is given as 1.2 in.

For a value to be considered significantly high, the probability P(x or higher) should be less than or equal to 0.01. Similarly, for a value to be significantly low, P(x or lower) should also be less or equal to 0.01.

To find the back-to-knee lengths separating the significant values from non-significant, one can use the z-scores associated with the probabilities 0.01 and 0.99 (since the total probability of a normal distribution is 1). So, the lengths in question will be the ones that correspond to these z-scores.

Provided, a z-score is a value's number of standard deviations from the mean. If z is the z-score, μ is the mean, σ is the standard deviation, and x is the value, the formula is z=(x-μ)/σ.

Regarding the specific measurement of 24.2 in., we would need to calculate the probability P(X>=24.2) using the given mean and standard deviation in Z-score formula. If P(X>=24.2) is less than 0.01, then 24.2 in. can be considered as significantly high.

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The amount of time spent reading email to the amount of time spent watching television is 1/12

Step-by-step explanation:

Given

Time to read email = 15 minutes

Time on television =  3 hours = 3*60 minutes = 180 minutes

Ration is the fraction between two things. In this case, the ration is from the amount of time spent reading email to the amount of time spent watching television

So,

Required ratio will be: 15/180

Simplifying => 1/12

So,

The amount of time spent reading email to the amount of time spent watching television is 1/12

Keywords: Ratio, fractions

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Answer:

Step-by-step explanation:

Total amount of money to be shared among Neymar, Rohit Sharma and Nadal is $250

Neymar gets two parts. This means that Neymar gets 1/2 × total amount of money.

Neymar gets 1/2 × 250 = 125

The percentage will be amount that Neymar gets divided by the total amount and multiplied by 100. It becomes

125/250 × 100 = 50%

Rohit gets three parts. This means that Rohit gets 1/3 × total amount of money.

Rohit gets 1/3 × 250 = 83.33

The percentage will be amount that Rohit gets divided by the total amount and multiplied by 100. It becomes

83.33/250 × 100 = 33.33%

Nadal gets five parts. This means that Nadal gets 1/5 × total amount of money.

Nadal gets 1/5 × 250 = 50

The percentage will be amount that Nadal gets divided by the total amount and multiplied by 100. It becomes

50/250 × 100 = 20%

Answer:

Step-by-step explanation:

A total of 10 parts are allocated to Neymar, Rohit, and Nadal, so each part represents 1/10 of the amount, or 10%.

Neymar gets 2 parts, or 20% of $250, so gets $50.

Rohit gets 3 parts, or 30% of $250, so gets $75.

Nadal gets 5 parts, or 50% of $250, so gets $125.

_____

Comment on the question

The question seems incomplete in that there are 4 names, but only 3 allocations.

Answer:

How many seconds did it take the paper airplane to reach the ground?

40 Seconds.

Step-by-step explanation:

When the paper airplane touches the ground is equivalent to having a height equal to zero (y=0). So replacing in the equation:

[tex]y= -1.5x+60\\0= -1.5x+60\\1.5x=60\\x=\frac{60}{1.5} \\x=40[/tex]

The function y= -1.5x+60 describes the downward trajectory of a paper airplane. The '-1.5' represents the falling speed per second, and '+60' represents the initial height. To find the paper airplane's height at any time, substitute the time into the equation.

The question deals with the concept of linear equations and gravity, a physics concept represented in mathematical terms. The function y= -1.5x+60 describes the trajectory of a paper airplane thrown from a building. This function means that the height y of the airplane above the ground, after x seconds, decreases by 1.5m each second, starting from an initial height of 60m.

The coefficient -1.5 represents the speed of the plane, which is downwards due to negative sign. After each second, the paper airplane will be 1.5 m lower than it was the previous second. The '+60' means the paper airplane was initially 60m off the ground.

To use this function for any given time (x), simply substitute the time into the equation. For example, for 5 seconds (x=5), the height y would be -1.5*5+60 = -7.5 + 60 = 52.5m

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The answer is mean.

Mean is the most commonly used measure of central tendency. It represents the average of the given collection of data. Median: Given that the data collection is arranged in ascending or descending order, the following method is applied:

• If number of values or observations in the given data is odd, then the median is given by [(n+1)/2]th observation.

• If in the given data set, the number of values or observations is even, then the median is given by the average of (n/2)th and  [(n/2) +1]th observation.

Given here: Shop A Shop B

                      55         36

                      52         40

                      50         34

                      47         39

                      51         44

                      48        41

                      53        40

                      53       38

Total =           409      312

Since the data is not skewed mean will provide more accurate data then median.

Therefore the respective means are Shop A =51.125 Shop B=39

Hence, The answer is mean.

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Answer:

b

Step-by-step explanation:

Answer:straight angle

Step-by-step explanationbecause it’s straight