Consider the following research title: "Seasonal distribution of endemic typhus in the Southern United States, 1922-1925". What type of research design would this study most likely utilize? Cross-sectional ecologic study Longitudinal ecologic study o Qualitative study Cross-sectional survey

Answer:

The answer is true when w =

41 2/3

Given that 25% of students solved at least two tasks and there were 32 students who wrote the test, we can prove that there was at least one task that no more than 12 students solved.

There was at least one task that no more than 12 students solved, we can use a proof by contradiction.

Assume that all five tasks were solved by more than 12 students. This means that for each task, there were at least 13 students who solved it. Since there are five tasks in total, this implies that there were at least 5 * 13 = 65 students who solved the tasks.

However, we are given that only 25% of students solved at least two tasks. If we let the number of students who solved at least two tasks be S, then we can write the equation:

S = 0.25 * 32

Simplifying, we find that S = 8.

Now, let's consider the remaining students who did not solve at least two tasks. The maximum number of students who did not solve at least two tasks is 32 - S = 32 - 8 = 24.

If all five tasks were solved by more than 12 students, then the total number of students who solved the tasks would be at least 65. However, the maximum number of students who could have solved the tasks is 8 (those who solved at least two tasks) + 24 (those who did not solve at least two tasks) = 32.

This contradiction shows that our initial assumption is false. Therefore, there must be at least one task that no more than 12 students solved.

Hence, we have proven that there was at least one task that no more than 12 students solved if 32 students wrote the test.

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The three examples of exercises that develop cardiovascular endurance are hiking, cycling and running.

Exercises require constant supply of energy obtained through glucose metabolism. It is provided through combined efforts of cardiovascular system and respiratory system. So during strenuous exercises, cardiovascular endurance refers to the ability of body to respond well during these exercises.

The aerobic exercises help develop cardiovascular endurance. They can be medium to high intensity exercises. The examples are swimming, dancing and running.

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Both approaches to geometry have their strengths and weaknesses and can be useful depending on the context and problem at hand.

What is Euclidean geometry?

Euclidean geometry is a branch of mathematics that deals with the study of points, lines, angles, planes, and solid figures in two- and three-dimensional space.

In Euclidean geometry, the focus is on the properties and relationships of geometric figures without the use of numerical measurements. It is a deductive system of mathematics that starts with a set of axioms, definitions, and postulates, and uses logical reasoning to deduce new results. This approach to geometry is useful for developing logical thinking and problem-solving skills and has been used for centuries to develop our understanding of geometric concepts and their applications.

On the other hand, in analytical geometry, the focus is on the relationship between algebra and geometry, using positions of points in a Cartesian coordinate system. It is a more algebraic approach to geometry that involves representing geometric objects as equations or functions. This approach to geometry is useful for applications that involve quantitative analysis, such as physics, engineering, and computer graphics.

Therefore, both approaches to geometry have their strengths and weaknesses and can be useful depending on the context and problem at hand.

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Answer:

3.7×1.2=3+0.7+0.6+0.14=4.44

Step-by-step explanation:

I added all the choices together I picked the one that had the same answer. Good luck!

Owen's model is represented by -

3.2 x 1.7 = 3 + 2.1 + 0.2 + 0.14 = 5.44

Given is that Owen creates this model to determine the product of two decimals.

The equation that represents the Owen's model is -

3.2 x 1.7 = 3 + 2.1 + 0.2 + 0.14 = 5.44

Therefore, Owen's model is represented by -

3.2 x 1.7 = 3 + 2.1 + 0.2 + 0.14 = 5.44

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Answer:

51°

Step-by-step explanation:

The sum of the measures of the angles of a triangle is 180°.

x + 60 + x + 82 + 56 = 180

2x + 198 = 180

2x = -18

x = -9

m<A = x + 60 = -9 + 60 = 51

Answer: 51°

Answer:

episodes

Step-by-step explanation:

you have finished 20 episodes in 16 hours and 25 episodes in 20 hours, so if the answer is a whole number, it will take a bit under 20, so 19 hours!

Answer:

The answer is 2/9

Step-by-step explanation:

Now,

2/3 × 1/3 = 2/9

Thus, Anne uses 2/9 of the roll gift wrap to pack each doll.

-TheUnknownScientist 72

Answer:

if  youre factoring, there is no possible factors

if youre solving for x, it is

x =−1.5+0.87i

x =−1.5-0.87i

i believe

Step-by-step explanation:

quadratic equation

Without knowing how many customers own birds in the survey, we cannot provide a specific answer.

To find the percentage of people who own a bird, we need to know the number of customers who own birds and the total number of customers surveyed. Let's say x customers own birds. Then, the remaining (150 - x) customers must own fish.

So, the percentage of people who own a bird is:

x / 150 * 100

We don't have information on the number of people who own birds in the survey, so we can't give a specific answer.

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Answer:

125 questions

Answer:

125 questions

Step-by-step explanation:

Let's simplify step-by-step

8y-3x/4/4 -(-7+5x/3)

Distribute:

=-3/16 x +1/2 y+-5/3 x+7/3

Combine like terms:

=-3/16x+1/2 y +-5/3x+7/3

=(-3/16x+-5/3x)+(1/2y)+(7/3)

=-89/48x +1/2y+7/3

Answer: -89/48x+1/2y+7/3

The approximate value of \(log_{8}24\) is 1.52832 or 1.53.

What is the logarithmic Expression?

A logarithmic expression is an function that involves the logarithm of an expression containing a variable. To solve exponential equations, first see whether you can write both sides of the equation as powers of the same number.

Here \(log_{8}24\) = \(log_{2^{3} }24\)

                   = \(\frac{1}{3} log_{2}24\)

                   = \(\frac{1}{3} log_{2}{8.3}\)

                   = \(\frac{1}{3} log_{2}8 + \frac{1}{3} log_{2}3\)

                   = \(\frac{1}{3} log_{2}2^3 + \frac{1}{3} log_{2}3\)

                   = \(\frac{3}{3} log_{2}2 +\frac{1}{3} log_{2}3\)

                   =  \(1 + \frac{1}{3} log_{2}3\)

                   = 1 + 0.5283

      l\(log_{8}24\)  ≈ 1.53

The approximate value of \(log_{8}24\)  is 1.52832 or 1.53.

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the solution to the system of equations is x = 2 and y = 1.

To solve the system of equations by substitution, we will solve one equation for one variable and substitute it into the other equation.

Given the system of equations:

1) y = 6x - 11

2) -2x - 3y = -7

Step 1: Solve equation (1) for y.

  y = 6x - 11

Step 2: Substitute the value of y from equation (1) into equation (2).

  -2x - 3(6x - 11) = -7

Step 3: Simplify and solve for x.

  -2x - 18x + 33 = -7

  -20x + 33 = -7

  -20x = -7 - 33

  -20x = -40

  x = (-40)/(-20)

  x = 2

Step 4: Substitute the value of x into equation (1) to find y.

  y = 6(2) - 11

  y = 12 - 11

  y = 1

Therefore, the solution to the system of equations is x = 2 and y = 1.

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The solution to the system of equations y = 6x - 11 and -2x - 3y = -7 is x = 2 and y = 1. This is achieved by substituting y into the second equation, simplifying, and solving for x, then substituting x back into the first equation to solve for y.

To solve the system of equations y = 6x - 11 and -2x - 3y = -7 by substitution, we start by substituting the equation y = 6x - 11 into the second equation in place of y, giving us -2x - 3(6x - 11) = -7. Next, simplify the equation by distributing the -3 inside the parentheses to get -2x - 18x + 33 = -7. Combine like terms to get -20x + 33 = -7. Subtract 33 from both sides to obtain -20x = -40, and finally, divide by -20 to find x = 2.

Once we find the solution for x, we substitute it back into the first equation y = 6x - 11. Substituting 2 in place of x gives y = 6*2 - 11, which simplifies to y = 1.

Therefore, the solution to the system of equations is x = 2 and y = 1.

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The resulting value for the variable z from the figure is 25.

According to the secant segment theorem, if two secant segments cross outside of a circle, the product of one secant segment and its exterior portion is equal to the product of the other secant segment and its external portion.

Mathematically for the given figure:

3 * z = 5(10+5)

3z = 5(15)

3z = 75

Divide both side of the expression by 3

3z/3 = 75/3

z = 25

Hence the value of z from the given diagram is 25.

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Answer:

Put it in math-way and please write the expression so I can solve it

Step-by-step explanation:

Answer:

h

Step-by-step explanation:

h

Let's see

\(\\ \rm\rightarrowtail f(x)=6(4/3)^x\)

Put one by one

\(\\ \rm\rightarrowtail f(-3)=6(4/3)^{-3}=6(3/4)^3=6(27/64)=3(27/32)=81/32\)

\(\\ \rm\rightarrowtail f(-2)=6(4/3)^{-2}=6(3/4)^2=6(9/16)=27/8\)

\(\\ \rm\rightarrowtail f(-1)=6(4/3)^{-1}=6(3/4)=9/2\)

\(\\ \rm\rightarrowtail f(0)=6\)

\(\\ \rm\rightarrowtail f(1)=6(4/3)=8\)

Answer:

Step-by-step explanation:

If M is midpoit of AB then:

\(x_M-x_A=x_B - x_M\qquad\quad\ \wedge\qquad y_M-y_A=y_B - y_M\\\\ 3-4=x_B-3\qquad\quad\wedge\qquad 1-3=y_B -1\\\\ -1=x_B-3\qquad\quad\wedge\qquad\ \ -2=y_B-1 \\\\ {}\quad x_B=2\qquad\qquad\wedge\qquad\qquad \ y_B=-1\)

The midpoint of AB is M(3, 1). If the coordinates of A are (4,3), then the coordinates of B will be; B(2, -1).

Midpoint means the point which lies in the middle of something. The midpoint of a line segment means a point that; lies in the mid of the given line segment. Then, its coordinates are:

\(x = \dfrac{p+m}{2}\)

and

\(y = \dfrac{q+n}{2}\)

Given that the midpoint of AB is M(3, 1). If we are given the coordinates of A are (4,3); thus the midpoint is M(x,y) on that line segment.

Then, the coordinates are;

(x - 3)/2= 4

x - 3 = -1

x = 2

(y - 1)/2= 3

y - 1 = -2

y = -1

Therefore, the coordinates of B are; B(2, -1)

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1254 Revolutions of the wheel will it take to travel 1,200 meters. Hence, the correct option is (d) 1,254 revolutions.

Given information:

Diameter of a child's bicycle wheel = 12 inches Circumference of the wheel = diameter × π≈ 12 × 3.14 = 37.68 inches ≈ 37.7 inches distance traveled = 1,200 m = 1,200 × 39.3701 inches (since 1 meter ≈ 39.3701 inches) = 47244 inchesTo find: Approximately how many revolutions of the wheel will it take to travel 1,200 meters?

Formula: Total distance travelled = a number of revolutions × circumference of the wheel Number of revolutions = total distance traveled ÷ circumference of the wheel Calculation: Substitute the given values in the above formula Number of revolutions = 47244 ÷ 37.7 ≈ 1254

So, approximately 1254 revolutions of the wheel will it take to travel 1,200 meters. Hence, the correct option is (d) 1,254 revolutions.

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\(t=5.825\sqrt[3]{\cfrac{w}{p}} ~~ \begin{cases} w=3,590\\ t=13.4 \end{cases}\implies 13.4=5.825\sqrt[3]{\cfrac{3590}{p}} \\\\\\ \cfrac{13.4}{5.825}=\sqrt[3]{\cfrac{3590}{p}}\implies \left( \cfrac{13.4}{5.825} \right)^3=\cfrac{3590}{p}\implies \cfrac{13.4^3}{5.825^3}=\cfrac{3590}{p} \\\\\\ 13.4^3p=(3590)5.825^3\implies p=\cfrac{(3590)5.825^3}{13.4^3}\implies p\approx 290~hp\)

well, clearly Natasha rules!!

now 3) is simply asking on getting a couple of "w" and "p" and getting their time or "t".

In your assignment related to 'Radical Equations', you are dealing with equations that contain radicals with variables in the radicand. You solve them by isolating the radical on one side and then squaring both sides of the equation. Finally, you need to check the solution(s) by substituting back into the original equation.

In the given assignment, the topic is Radical Equations, which is an essential area of study in high school mathematics. Radical equations are equations that contain radicals with variables in the radicand. Solving such equations involves isolating the radical on one side of the equation and then squaring both sides.

Solving Radical Equations

Here are general steps to solve radical equations:

   Check your solution(s) by substituting them into the original equation to ensure they work.

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The area of the half-dollar coin with a diameter of 1.2 inches is greater.

Both the given objects have a circular shape with a different diameter.

One of the objects is made up of two separate quarters of a circle, each with a diameter of 1 inch.

On the other hand, the second object is one half-dollar coin with a diameter of 1.2 inches.

We will use the formula of the area of a circle that is : A = πr²

Where A is the area of the circle.

π is the constant value (3.14)

r is the radius of the circle.

Let's calculate the area of 2 quarters each with a diameter of 1 inch.

The radius will be half of the diameter.

So, the radius is 1/2 inch for each quarter of the circle.

A = πr²A = π × (1/2)²A = π × 1/4A = 0.7854 square inches.

The total area of both quarters will be = 2 × 0.7854 square inches

The total area of both quarters = 1.5708 square inches

Now, let's calculate the area of the half-dollar coin with a diameter of 1.2 inches.

The radius will be half of the diameter.

The radius of the half-dollar coin = 1.2 / 2 = 0.6 inch

A = πr²A

  = π × 0.6²A

  = π × 0.36A

  = 1.1318 square inches

The half-dollar coin has a greater area as compared to the two quarters of a circle.

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The greatest volume of the cone made be 4372.7 m³.

Given, a right triangle whose hypotenuse is 22 m long is revolved about one of its legs to generate a right circular cone.

Let the base of the right triangle be, b

and the height of the right triangle be, h

Using Pythagoras Theorem, we get

22² = b² + h²

484 = b² + h²

Now, the height of the cone be, h and the radius of the cone be, b

Volume of the cone =  1/3πb²h

as, b² = 484 - h²

Volume = 1/3π(484 - h²)h

Volume = 1/3π(484h - h³)

On differentiating, we get

V' = 1/3π(484 - 3h²)

h² = 484/3

h = 22/√3

h = 22√3/3

b = 22√2/√3

Volume = 1/3π(22√2/√3)(22√2/√3)(22√3/3)

Volume = 1/9√3π(22³)(2)

Volume = 4372.7 m³

Hence, the greatest volume of the cone made be 4372.7 m³.

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Answer:

imaginary numbera

Step-by-step explanation:

Result of every natural number is positive and for imaginary number sqaure result positive .

1a) 2x + 3y = 24

To solve this first equation, plug in provided values until you get a true statement. In this case, option 2 is correct.

2(3) + 3(6) = 24

6 + 18 = 24

24 = 24

1b) y > x + 2

To solve this first equation, plug in provided values until you get a true statement. In this case, option 1 is correct.

7 > 4 + 2

7 > 6

1c) x - 3y ≤ 5

To solve this first equation, plug in provided values until you get a true statement. In this case, option 3 is correct.

0 - 3(7/2) ≤ -2

0 - 10.5 ≤ -2

True

1d) Needs options

Answer:1a) 2x + 3y = 24 is (3,6)

1b) y > x + 2 is (7,4)

1c) x - 3y ≤ 5 is (0,-2)

1d) what are the options?

Step-by-step explanation:

The statement that "the sample is set of all people or objects whose properties ,  are to be described and analyzed by the data collector " is False .

In the question ,

it is given that ,

The sample is the set of all the people or objects whose properties are to be described and analyzed by the data collector .

But we know that the Population is defined as "set of all people or objects whose properties are to be described and analyzed by the data collector"

and the Sample is the Subset or subgroup of the population .

Therefore , the given statement is False .

The given question is incomplete , the complete is

State whether the statement is True or false "a sample is the set of all the people or objects whose properties are to be described and analyzed by the data collector " .

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Answer:

2486

Step-by-step explanation:

9009-6523=2486

Answer:

The mass of Benjamin's backpack is 2,486 grams.

Step-by-step explanation:

9009-6523=2486

Answer:

Step-by-step explanation:

so if x is the money he had in the beginning, than

m=x-5(3.55)

m=x-$17.75