The time required to load a truck is exponentially distributed with a mean of 15 minutes. What is the probability that a truck will be loaded in 20 minutes or more? enter your answer as a decimal not as a percent and round your answer to 3 decimal places.

Answers

Answer 1

Using the exponential distribution, there is a 0.263 probability that a truck will be loaded in 20 minutes or more.

Exponential distribution

The exponential probability distribution, with mean m, is described by the following probability mass function:

[tex]f(x) = \mu e^{-\mu x}[/tex]

[tex]\mu = \frac{1}{m}[/tex] is the decay parameter.

The probability that x is lower or equal to a is given by:

[tex]P(X \leq x) = \int\limits^a_0 {f(x)} \, dx[/tex]

The integral has the following solution:

[tex]P(X \leq x) = 1 - e^{-\mu x}[/tex]

Hence the probability of finding a value higher than x is given by:

[tex]P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}[/tex]

In the context of this problem, the mean and the decay parameter are given, respectively, by:

[tex]m = 15, \mu = \frac{1}{15} = 0.0667[/tex]

Hence the probability that a truck will be loaded in 20 minutes or more is:

[tex]P(X > 20) = e^{-0.0667 \times 20} = 0.263[/tex]

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Related Questions

Fill in the table using this function rule.
y=4x-3

Answers

the value of y for x values(-2,0,2,4) are {11, 3, -5, -13}

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

You want the value of y for various values of x, given that y = -4x +3.

Function evaluating

Put the value of x where x is in the function rule and do the arithmetic.

 y = -4x +3

for x = -2

y = (-4)(-2) +3 = 8 +3 = 11

for x = 0

y = (-4)(0) +3 = 0 +3 = 3

for x = 2

y = (-4)(2) +3 = -8 +3 = -5

for x = 4

y = (-4)(4) +3 = -16 +3 = -13

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Please help or answer questions 2, 3, and 4. You may answer question 1 if you’d like but I do not need it. I have already done question 2 but confirming my answers would be nice. I will give out brainliest.

Answers

The ratios that can be used to compare the soda and punch recipes are as follows;

1. Emily:

Mason's recipe for soda is y = (1/2)•x

Tyler's recipe; y = (3/5)•x

Julio's

Mason's recipe; y = (1/3)•x

Tyler's recipe; y = (3/8)•x

2. Please see the completed values in the table in the elucidation that follows

3. The equivalent ratio relationship in each graph is given by the constant ratio of each coordinate pair.

4. The recipe that has the strongest lemon lime taste is given by the graph that has the steepest slope

What is the slope of a graph?

The slope of a graph is given by the ratio of the rise to the run of a graph

1. The unit rate for Mason's recipe is (1/2) cup of lemon–lime per cup of club

While the unit rate for Tyler's recipe for club soda is (3/5) cup of lemon and lime per cup of club

Mathematically, we have

Emily;

Mason's recipe; y = (1/2)•x

Tyler's recipe; y = (3/5)•x

Julio;

Mason's recipe; y = (1/3)•x

Tyler's recipe; y = (3/8)•x

Carlos's recipe; y = (2/5)•x

Zeb's recipe; y = (1/5)•x

2. The values in the table becomes;

Mason

Lemon–lime; 1/3, 2/3, 1, 4/3, 5/3, 6/3

Total punch; 1, 2, 3, 4, 5, 6

Tyler's

Lemon–lime; 3/8, 3/4, 9/8, 3/2, 15/8, 9/4

Total punch; 1, 2, 3, 4, 5, 6

Carlos's

Lemon–lime; 2/5, 4/5, 6/5, 8/5, 2, 12/5

Total punch; 1, 2, 3, 4, 5, 6

Zeb's

Lemon–lime; 1/5, 2/5, 3/5, 4/5, 1, 6/5

Total punch; 1, 2, 3, 4, 5, 6

3. Each graph represents equivalent ratios given that the value of the ratio of data point is a constant, that is, we have;

For Mason, 1:(1/3) = 2:(2/3) = 3:1...

For Tyler, 1:(3/8) = 2:(3/4) = 3:(9/8)...

For Carlos, 1:(2/5), 2:(4/5), 3:(6/5)...

For Zeb, 1:(1/5), 2:(2/5), 3:(3/5)...

4. The slope of each graph is given by the number of cups of lemon–lime per one cup of total punch,

The recipe that has the strongest lemon–lime taste is given by the recipe that has the most lemon–lime per each cup of total punch

Which gives;

The recipe that has the strongest lemon–lime can be found from the graph that has the largest slope, which is given by Carlos's recipe.

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Basic Geomtry Help, Easy

Answers

Answer:

A

Step-by-step explanation:

Because it's has no straight to it

Friday
Use the equation to fill in the table.
y = 2x -7

Answers

Answer:

x=7

Step-by-step explanation:

7=2x-7

-2x-7-7

-2x=-14

x=-14÷2

x=-7

In triangle ABC, ACB = 67°, AB= 6.9 cm and
BC = 5.7 cm.
a Calculate angle BÂC.

b Hence find the area of AABC.

Please answer all questions to 3 correct sig figs.

Answers

Answer:

In triangle ABC, ACB = 67°, AB= 6.9 cm and BC = 5.7 cm.

Step-by-step explanation:

a license plate consists of 3 letters followed by 4 digits. how many license plates are possible if the first digit cannot be 0, and letters and digits may repeat?

Answers

There are 158,184,000 possible license plates consisting of 3 letters followed by 4 digits.

Based on the given information, since the letters and digits may be repeated, there are:

26 ways to fill in the first letter

26 ways to fill in the second letter

26 ways to fill in the third letter

9 ways to fill in the first digit *(first digit cannot be 0)

10 ways to fill in the second digit

10 ways to fill in the third digit and

10 ways to fill in the first digit

Thus, by Fundamental Principle of Counting, there are 158,184,000 possible license plates.

26 x 26 x 26 x 9 x 10 x 10 x 10 = 158,184,000

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In one year, a school uses 12,370 pieces of white paper, 5,670 fewer pieces of blue paper than white paper, and 3,500 fewer pieces of yellow paper than blue paper. How many pieces of paper does the school use in all?

Answers

Answer:

22270 pieces of paper

Step-by-step explanation:

White:  12370   [12,370 pieces of white paper]

Blue:     6700   (12370-5670).  [5,670 fewer pieces of blue paper than white paper]

Yellow: 3200     (6700-3200).  [3,500 fewer pieces of yellow paper than blue paper]

The sum is 22270 pieces of paper.

Calculate the height of a tree whose shadow is 20m shorter when the angle of elevation of the sun is 60 than when the angle of elevation is 30

Answers

The height of a tree whose shadow is 20m shorter when the angle of elevation of the sun is 60 is 17.3 meters.

What is elevation?

The elevation is the distance above sea level. They are usually measured in meters or feet.

Let t be the height of the tree, then the length of the shadow will be:

Shadow length = t/tan(α)

where α is the angle of elevation. The difference in shadow lengths is:

20 m = t/tan(30°) -t/tan(60°) = t(√3 -1/√3)

= (20 m)/(2/√3) = 10√3 m

= 17.3 m

The height is 17.3 meters.

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MEAN The mean A of two numbers, x and y, is given by A =*+. Solve for y.

Answers

The  mean can be written as mean A= x+ y/2

What is Mean?

A data set's mean (average) is calculated by summing all of the numbers in the set, then dividing by the total number of values in the set.

Only numerical variables—regardless of whether they are discrete or continuous—can be used to determine the mean. Simply dividing the total number of values in a data set by the sum of all of the values yields it.

The mean formula is

= {Sum of Observation} ÷ {Total numbers of Observations}

Given:

mean A of two numbers, x and y

So, the mean can be written as

mean A= x+ y/2

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Find the length of side x in simplest radical form with a rational denominator. I will give brainliest please help asap

Answers

Answer:

[tex]x=\frac{\sqrt{2}}{2}[/tex]

Step-by-step explanation:

x^2+x^2=1

x^2=1/2

x=1/sqrt2

x=sqrt2/2

:]

-5 < 3x -8 / means greater than or equal to

Answers

Answer:

Equation: -5 <3× -8

+8. +8

3 <3x

_ _

3. 3

Answer: 1 = X

Step-by-step explanation:

Equation: -5 <3× -8

First Step: You must add 8 to -8 and move it to both sides. The reason why we do this is because on the left side we have 1 number and on the right side we have 2 numbers. We see that the right side has more numbers than the left, so we must move the -8 turning it to a positive 8 (8-8 cancels each other making 0) and adding the +8 in -8 to -5 as well, since we're adding to both sides.

Second Step: Since we added 8 to -5, it equals 3 now 8-5=3. Changing the equation to 3 <3x. Now we have to divide 3 to both sides as well, because we want the x to be by itself. So, 3 ÷ 3 = 1 and 3x ÷ 3 = x

Results: After our extraordinary calculations we recieve

the answer 1=x

By looking at the equation of the least-squares regression line, you can see that the correlation between height and arm span is.

Answers

Step-by-step explanation:

If the data shows a leaner relationship between two variables, the line that best fits this linear relationship is known as a least-squares regression line, which minimizes the vertical distance from the data points to the regression line.

peruvian cafe bought ad time on radio station wkoi. during the first four weeks, 4,000 different people heard the spot six times, while 2,000 heard it only three times during the same period. what is the average frequency?

Answers

The average frequency of people hearing the spot on the radio station is equal to 5.

Average frequency can be defined as the average number of times an individual is exposed to an Advertising schedule.

Average frequency can be calculated by using the formula;

average frequency = total / n

As 4000 people heard the spot 6 times and 2000 people heard it three times; therefore

n = 4000 + 2000 = 6000

total = number × frequency = (6 × 4000) + (3 × 2000) = 24000 + 6000 = 30,000

Substituting these values in the equation;

average frequency = 30,000 / 6000

average frequency = 5

Hence the average frequency of people hearing the spot on the radio station wkoi is calculated to be 5.

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4) The ratio of the side length of a square to the square perimeter is always 1 to 4. Peter
drew a square with a perimeter of 28 inches.

What is the side length of the square Peter drew

Answers

The side length of a square is 7 inches drawn by the Peter.

Whats is termed as the perimeter of the square?A square's perimeter is described as the amount length of its boundary. The distance around any looped geometrical shape is used to calculate its perimeter. The perimeter of a square can be determined by adding all of its sides. It is four times this same length of every side of a square because all 4 sides are equal.

According to the question, the ratio of a square's side length to its perimeter is always one to four.

According to the story, Peter drew a square with such a perimeter of 28 inches.

Divide 28 inches by 4 to get the side length of a square Peter drew.

= 28/4

= 7 inches

As a result, the side length of a square is 7 inches.

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What calculation will give us the estimated volume of the Great Pyramid of Giza in cubic meters?

Answers

The option that would give the estimated volume of the Pyramid of Giza is = [tex]\frac{53,000 . 150 }{3}[/tex]

What is the volume?

A pyramid is a 3-dimensional shape that is made up of a polygonal base and 4 triangular faces. The 4 triangular faces are joined at a vertex. Types of pyramids include a square pyramid, rectangle pyramid, triangle pyramid.

The volume of a pyramid is the amount of space that is a three-dimensional shape.

Volume of a pyramid = 1/3 x (base area x height)

1/3 x (53,000. 150)

= [tex]\frac{53,000 . 150 }{3}[/tex]

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use the aleks calculator to find 46% of 20 do not round

Answers

The value of the part of 20 that is 46% is 9.2.

How to determine the percentage of a number?

Percentage is simply a number or ratio expressed as a fraction of 100.

It is expressed as;

Percentage = ( Part / Whole ) × 100%

Given the data in the question;

Percentage = 46%Whole = 20Part = ?

Plug the given values into the above formula and solve for the part.

Percentage = ( Part / Whole ) × 100%

46% = ( Part / 20) × 100%

46/100 = ( Part / 20 ) × 100/100

46/100 = ( Part / 20 ) × 1

46/100 = Part / 20

Cross multiply

46 × 20 = Part × 100

920 = Part × 100

Part = 920/100

Part = 9.2

Therefore, 9.2 is 46 percent of 20.

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12/1-(2x+3)

How to simplify this fraction

Answers

Step-by-step explanation:

so, it is

12 / (1 - (2x + 3))

yes, that is

12 / (1 - 2x - 3) = 12 /(-2x -2) | divide both sides by -2

-6/(x + 1)

x represents a positive interger
X < 7
How should I solve this? It would help with a step by step guide

Answers

If x represents a positive integer and x<7, then the values of x = {1,2,3,4,5,6}

The x represents a positive integers

Positive integers are the integers greater than 0. In number line the positive number will be at the right side of the 0. The negative integers are the integers less than 0. In number line the negative number will be at the left side of the 0.

The given inequality is

x<7

The inequality is the mathematical expression represents the relation between the two values that is not equal

Here x is less than 7 and a positive integer

Therefore,

x = {1, 2, 3, 4, 5, 6}

Hence, if x represents a positive integer and x<7, then the values of x = {1,2,3,4,5,6}

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11) Translate the following phrases into algebraic expressions
a. The difference of a number k and four
b. Eight less than a number x
e. The sum of six and a number d
d. The product of a number and five
e The quotient of eight and a number
f. The product of two and a number increased by seven
g. Half of a number decreased by twelve

Answers

A number, a variable, or a mix of numbers, variables, and operation symbols make up an expression. The translation is as follows:

a) 4 - k

b) 8 - x

c) 6 + d

d) x + 5

e) 8 / x

f) 2 + x = 8

g) 1/2n-12

What is meant by algebraic expressions?

A number, a variable, or a mix of numbers, variables, and operation symbols make up an expression. Two expressions joined by an equal sign form an equation.

Arithmetic operations like subtraction, addition, division, multiplication, and exponentiation are used to combine variables and integers to produce any algebraic expression. A variable, a number, or a variable and number with an exponent as a product can all be used as the phrase.

The translation is as follows:

a) 4 - k

b) 8 - x

c) 6 + d

d) x + 5

e) 8 / x

f) 2 + x = 8

g) 1/2n-12

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Determine which statement completes each open sentence:

32+8+1
15 (1+2)

4.2
3(x - 4 + x)
when x = 4
111
3(x-4 + x)
when x = 2
32-1
15 +1 +2
3x4+x
3x4+x
1. is equal to
2. is NOT equal to

Answers

The statement which completes each of the open sentences are given below:

32 ÷ 8 + 1 is not equal to  3² - 1

15 ÷ ( 1 + 2) is not equal to  15 ÷ 1 +2

4² is not equal to  4 . 2

3 ( x - 4 + x) is not equal to  3x - 4 + x when x = 4

3 ( x - 4 + x) is not equal to  3x - 4 + x when x = 2

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The water level will be 10 feet or lower by tomorrow.

Answers

The inequality written for the given statement is x≤10. Therefore, option A is the correct answer.

The given statement is "The water level will be 10 feet or lower by tomorrow."

What is a inequality?

Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

The inequality for the given statement is x≤10

The inequality written for the given statement is x≤10. Therefore, option A is the correct answer.

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"Your question is incomplete, probably the complete question/missing part is:"

Choose the inequality that represents the statement.

The water level will be 10 feet or lower by tomorrow.

A. x≤10

B. x<10

C. x>10

D. x=10

equivalent to 6+12x?

Answers

Answer:

Step-by-step explanation:

6 + 12x

6 ( 1 + 2x )

Pleaseeeeeeeee helpppp

Answers

Answer:n= -129/t

im not sure  if thats the answer ur looking for

Please i really need help

Answers

Answer:

2:4 ratio (1:2)

2cups carrot + 4cups apple = 6cups (ratio 1:2)

Therefore 4cups carrot + 8 cups apple = 12 cups (ratio 1:2)

Hope that helps

Solve 3x > 174, and use the interactive number line tool to graph the solution. What is true about the graph? Check all that apply.
There is an open circle at 58.
There is a closed circle at 58.
There is an open circle at 174.
There is a closed circle at 174.
The arrow points right.
The arrow points left.

Answers

Answer:

there is an open circle at 58

the arrow points right

Step-by-step explanation:

3x>174/:3

x>58 we have a strict x more than 58 that's why it's an open circle and right because x is more, but not less

Using the SSS congruence is criterion what additional information is needed to show that triangle RST is congruent to triangle UTS?


Answers

The additional information you will need to show that triangles RST and UTS are congruent by SSS congruence is: c. RT ≅ US.

How to Prove Two Triangles are Congruent by SSS Congruence Postulate?

To prove that two triangles are congruent to each other using the SSS congruence as a criteria, we need to know or be able to show that the three sides of one triangle are congruent to the corresponding 3 sides of the other triangle.

If this criterion is met, then we have enough information needed to show the two instruments are congruent by the SSS congruence.

RS ≅ UT as marked in the diagram shown. Also, by the reflexive property, we ST ≅ TS.

We already know two pairs of sides are congruent to each other in both triangles.

In other to prove the triangles are congruent by SSS congruence, the additional information needed is: c. RT ≅ US.

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Answer:

Step-by-step explanation:The additional information you will need to show that triangles RST and UTS are congruent by SSS congruence is: c. RT ≅ US.

How to Prove Two Triangles are Congruent by SSS Congruence Postulate?

To prove that two triangles are congruent to each other using the SSS congruence as a criteria, we need to know or be able to show that the three sides of one triangle are congruent to the corresponding 3 sides of the other triangle.

If this criterion is met, then we have enough information needed to show the two instruments are congruent by the SSS congruence.

RS ≅ UT as marked in the diagram shown. Also, by the reflexive property, we ST ≅ TS.

We already know two pairs of sides are congruent to each other in both triangles.

In other to prove the triangles are congruent by SSS congruence, the additional information needed is: c. RT ≅ US.


Marybeth rides her skateboard 5 miles in 30 minutes. If she maintains this rate, how far will she ride her skateboard in 4 hours?

Answers

40 miles per hour since 5 miles per 30 minutes times 2 is 10 miles per hour. Then you would multiply 10 mph by 4 = 40 mph

one customer has two chances to receive a prize. if the customer keeps the higher of the two prizes awarded, what is the probability the customer will receive at least $100?

Answers

If the customer keeps the higher of the two prizes awarded, the probability the customer will receive at least $100 is 0.10

The probability that the customer will receive at least $100, P(X>100) is obtained below:

The probability that the customer will receive at least $100 is obtained by adding the corresponding probabilities of X=100 and, X=1000

Given from the table of probabilities, P(X=100)=0.08, and P(X=1,000)

P[X>100]=P(X=100)+P(X=1,000)

              =0.08+0.02

               =0.10                                  

​      

The question is incomplete, the complete question is given below:

A real estate developer is awarding one of four prizes to customers who view new properties. The prizes are awarded randomly through drawings. Prize values and their associated probabilities follow:

PRIZE VALUE   PROBABLITY

$10                          0.80

$20                          0.10

$100                  0.08

$1000                  0.02

one customer has two chances to receive a prize. if the customer keeps the higher of the two prizes awarded, what is the probability the customer will receive at least $100?

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A vacant lot is being converted into a community garden. The garden and a walkway around its perimeter have an area of 238 square feet. Find the width of the walkway if the garden measures 12 feet wide by 15 feet long.

Answers

Considering the area of the rectangular lot, the width of the walkway is of 3.9 feet.

What are the area and the perimeter of a rectangle?

Considering a rectangle of length l and width w, we have that the area and the perimeter are given as follows:

The area is given by A = lw.The perimeter is given by P = 2(l + w).

In the context of this problem, for the garden and the walkway, the dimensions are given as follows:

Length of 15 feet.Width of 12 + w, in which w is the width of the walkway.

Considering that the area is of 238 square feet, we can solve for the width of the walkway as follows:

15(12 + w) = 238

12 + w = 238/15

12 + w = 15.9.

w = 15.9 - 12

w = 3.9 feet, which is the width of the walkway.

Since the area is in square feet, the length and the width are in feet.

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Ahmed has five more CDs than one-half the number of CDs Julia has. In this situation, what does One-half c+ 5 represent?

the number of CDs Ahmed has
the number of CDs Julia has
the number of CDs Ahmed has more than Julia
the number of CDs Ahmed and Julia have altogether

Answers

Answer: A) the number of CDs Ahmed has.

Step-by-step explanation:

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1) Consider the ratio table below that compare hours worked to money earned for an employee at a pizza restaurant. Hours Worked 4 12 16 ? Money Earned 36 ? 76 108 144 270 a. How much money would an employee earn for working 8 hours? b. How many hours did a person work if they earned $270? c. Find the ratio associated with the table above (in simplest form). d. If you extend the ratio table, how much money will be earned if an employee works 24 hours? dollars they can amount of time 3. Define: Reconstruction Heat waves are defined by the difference in temperature compared to the normal _________ typical of a region. Can Some one please help me match the congruence statements below! Nicholas's favorite game to play on his phone is Rex's Racers. At the start of Level 3, he scored 85 points for hitting some litter on the racetrack. Right after that, he scored 35 points for skidding on some oil. What is Nicholas's score now? b Rearrange the formula D=wp + 4 to make p the subject. Use your formula to work out the value of p when D = 100 and w=12. water is poured into a right cylindrical tank at a rate of 6 cubic inches per minute. if the radius of the base is 20 incheas long; how fast is the hieght changing when the water level is 12 inches high? Which graph represents the solution to this inequality? a core authentication server is exposed to the internet and is connected to sensitive services. what are some measures you can take to secure the server and prevent it from getting compromised by a hacker? select all that apply. which of the following are referred to as mononuclear phagocytes? check all that apply.question 4 options:a) mast cellsb) eosinophils) basophils) macrophages) dendritic cellsf) monocytesg) lymphocytes Which of the following describes the kingdom of Mali?A.It was a Muslim Empire, ruled by Mansa Musa, and got rich with the gold-salt trade.B.It was an empire in Southern Africa that invented Swahili and controlled trade with Asia.C.It was the first organized kingdom in West Africa and grew rich taxing the Gold-Salt trade.D.It was ruled by Sunni Ali and Askia Muhammad, controlled important trade routes and was conquered by invaders from Morocco. What happens to this enzyme when the pH rises above 11? What is the measure of the base of the rectangle if the area of the triangle is 28ft^2 ?PLSSS ANSWER ASAP genetic change in bacteria can be brought about by genetic change in bacteria can be brought about by transduction. conjugation. mutation. transformation. all of the answers are correct. ufa was successful because it spent lavishly to produce films outside of germany due to the beneficial exchange rate of the german currency after wwi. Match the terms to their correct definitions.1. generation2. rivalry3. continuity4. confidantI competition with another personconsistency, when a change occursgraduallya trusted person with whom youcan share personal informationpeople born in a specific era Divide using synthetic division. Write down the answer as a polynomial.x^3-5x^2-2x+24=0; (x+2) Premises:If I'm a student, then I go to school. If I go to school, then I learn.Conclusion:If I'm a student, then I learn.This is an example of the Law of? The principle of ________ states that organisms succeed one another in a definite, determinable order that can be used to recognize a specific time period. which situation can be represented by this inequality1.25x -6.50 > 50 A. Caleb has a balance of 6.50$ in his savings account and deposits 1.25$ each week. What is X the number of weeks must deposit 1.25$ in order to have a balance of more than 50$ in his savings account?B. Caleb earns 1.25% interest on the balance in his checking account and has to pay a monthly charge of 6.50$. What is X the balance that Caleb must have in his checking account in order to have an ending balance greater than 50$ after interest and fees.C. Caleb charges 1.25$ for gasoline plus 6.50$ per hour for mowing lawns. What is X the number of hours he has to mow lawns to earn more than 50$D. Caleb spends 6.50$ on supplies for a lemonade stand and sells each cup of lemonade for 1.25$. what is X the number of cups of lemonade Caleb must sell to earn profit of more than 50$