question 21 options: suppose the american kennel club estimates that 38% of households in u.s. have a pembroke welsh corgi. a random sample of 400 households is taken. round probability answers to 4 decimal places, i.e. .xxxx do not include leading or ending zeros. what is the probability the sample proportion is more than 40%?

Answers

Answer 1

The probability that the sample proportion is more than 40% is approximately .0001.

What is Probability?

Probability is a branch of mathematics in which the chances of experiments occurring are calculated. It is by means of a probability, for example, that we can know from the chance of getting heads or tails in the launch of a coin to the chance of error in research.

To find the probability that the sample proportion is more than 40%, we need to use the normal distribution and the central limit theorem.

The central limit theorem states that the distribution of the sample mean approaches a normal distribution as the sample size increases, regardless of the shape of the population distribution.

To find the probability that the sample proportion is more than 40%, we need to first calculate the mean and standard deviation of the sample proportion. The mean of the sample proportion is equal to the population proportion (38%), and the standard deviation of the sample proportion is equal to:

  [tex]standard\ deviation = sqrt((population\ proportion * (1 - population\ proportion)) / sample\ size)\\\\= \sqrt{((.38 * .62) / 400)}\\\\= .048[/tex]

Next, we need to standardize the sample proportion of 40% by subtracting the mean and dividing by the standard deviation:

z = (40% - 38%) / .048 = 4.17

The probability that it is less than or equal to 40% is approximately .9999.

The probability that the sample proportion is more than 40% is then equal to 1 - .9999 = .0001.

So, The probability that the sample proportion is more than 40% is approximately .0001.

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Related Questions

What is the x and y intercepts of -4x+5y=20 and is (5,8) a solution?

Answers

Answer: Yes, (5,8) is a solution.

x=-5, y=4

x-intercept (-5,0)

y-intercept (0,4)

Step-by-step explanation:

To find the x-intercept, make y equal to 0 and solve

-4x+5(0)=20

-4x=20

x=-5

To find the y-intercept, make x equal to 0 and solve

-4(0)+5y=20

5y=20

y=4

To see if 5,8 is a solution, sub in and solve

-4(5)+5(8)=20

-20+40=20

20=20

Yes, (5,8) is a solution.

New customers with Verizon pay a flat rate installation fee plus $45.00 per month for the
service. If after nine months, Mr. Burns paid $565, write and solve a linear equation to determine
how much he would pay after one year.

Answers

He would pay $160 after one year if the installation fee per month is $45.

What is meant by installation fee?

The cost of installing something. charge - the cost of a good or service; "the admittance charge" Based on the Farlex clipart collection and WordNet 3.0. Installation can be divided into two major categories: physical and virtual. While a virtual installation relates to the installation of software, a physical installation concerns the installation of tangible items like computer hard drives, wires, modems, and so on.

Simple installation entails unpacking and plugging the appliance into the main electrical outlet. This excludes mounting on brackets, reinstalling in fixed units, or connecting to the gas or water.

Installment fee per month=$45

For 9 months,

9×45=405

Total fees=Installation+405

Installation+405=$565

Let the installation be x then,

x+405=565

x=565-405

x=$160

Therefore, he would pay $160 after one year if the installation fee per month is $45.

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Two right angle triangles are joined toghether to. Make triangle acD

Answers

Answer:

transversitile multistelular projection

Answer:

Step-by-step explanation:

The perimeter of triangle ACD that is formed by two right-angle triangles ACB and DCB, approximated to 1 decimal place is: 40.1 cm.

What is the end behavior of function h

Answers

Answer:

Function to be graphed is,

h(x) = 2(x - 3)²

Function 'h' is a quadratic function.

Since, the coefficient of the leading term (term with the highest power) is positive, parabola will open upwards.

Both the ends of the parabola will be upwards (towards positive infinity).

As x approaches to negative infinity, h(x) approaches to positive infinity.

As x approaches to positive infinity, h(x) approaches to positive infinity.

Step-by-step explanation:

Please give the brainliest.

A delivery driver earns a fixed amount for each delivery she makes, and yesterday her average hourly wage was $16. 50 an hour. If she worked 6 hours yesterday and made 11 deliveries, how much does she earn for each delivery made?.

Answers

Answer:

let x= amount she earn for each delivery

6(16.5) = 11x

99 = 11x

x = 9

Each delivery she earned $9.

CHECKING:

$16.5 per hour * 6 hours = $99

11 deliveries * $9 = $99

Step-by-step explanation:

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What are the roots of x^3 −2=2x^2 −x?

Answers

Answer:

The roots of x^3 −2=2x^2 −x can be found by using the cubic formula to solve this polynomial equation. The roots are -2, 1, and 2/3.

Step-by-step explanation:

What is the factor of x² 11x 18?

Answers

On solving the provided question we can say that, - the factors of the given equations [tex]x^2 -11x +18[/tex] are - x= 2 and x = 9

What is factor?

A number that divides another number by itself with no residual is known as a factor. In other words, if multiplying two whole numbers results in the creation of a product, the numbers we are multiplying are factors of the product since the product is divisible by them. Division and multiplication are the two ways to discover factors. A number or other mathematical object is factorized or factored in mathematics by expressing it as the product of numerous factors, often smaller or simpler things of the same sort. One factorization of the polynomial x2 - 4 is 3 5, which is also a factorization of the number 15.

[tex]x^2 -11x +18[/tex]

(x-2)(x-9)

x= 2 and x = 9

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The graph of which equation is parallel to the graph of 4x - 3 = 12?

Answers

The graph of the equation that is parallel to 4x – 3y = –12 is determined as: A. y = 4/3x - 3/2.

What is the Equation of Parallel Lines?

If two lines are parallel to each other, their graph will have the same slope value, m. This means if their equations are expressed as y = mx + b in slope-intercept form, they will both have the same value of m.

Given the equation of a graph as 4x - 3y = -12, rewrite it in slope-intercept form to determine the slope value:

4x - 3y = -12

-3y = -4x - 12

-3y/-3 = -4x/-3 - 12/-3

y = 4/3x + 4

This means the slope, m is 4/3. The slope of the graph that is parallel to it will also have a slope of 4/3.

The slope of y = 4/3x - 3/2 is also 4/3, therefore, the answer is: A. y = 4/3x - 3/2.

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Complete Question:

The graph of which of the following will be parallel to the graph of 4x – 3y = –12?

A. y = 4/3x - 3/2

B. 6x - 4y = -8

C. y = 3/4x +1

D. 4x – 2y = –12

How can I grow my height?

Answers

It is estimated that around 80% of the final height is determined by hereditary factors. Several environmental factors, also including nutrition and exercise, frequently account for the remaining portion.

Explain the meaning of the term height?

A variety of factors affect your overall height.

1. Consume a diet rich in fresh, fruits, and vegetables.

proteins from whole grains.

2. Use caution when using supplements:

Few situations call for the use of supplements to help children grow taller and elderly persons stop shrinking.

3. Get the appropriate amount of rest:

On occasion skipping sleep won't have a long-term impact on your height. However, issues could arise if you consistently clock less than the advised amount during adolescence.

4. Keep moving:

Regular exercise has a lot of advantages. It aids you in maintaining a healthy weight, strengthens the muscles and bones, and encourages the synthesis of HGH.

5. Take care of your posture:

You could appear shorter than they actually are if you have poor posture.

Additionally, slouching or slumping over time might change your actual height.

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Hazel and Tom travel the same 18 km route.


Hazel starts at 9. 00 am and walks at a constant speed of 4. 8 km/h


Tom starts at 9. 39 am and runs at a constant speed.


Tom overtakes Hazel at 10. 15 am


At what time does Tom finish the route?

Answers

Answer:

11:27 am.

Step-by-step explanation:

The time which has passed when Tom overtakes Hazel is after Hazel has walked 1 hr 15 minutes and in that time Hazel has walked

1.25 * 4.8

= 6 km.

So, Tom runs 6 km in 10:15 - 9.39 = 36 minutes

= 0.6 hrs.

So, Tom's speed is 6/0.6 = 10 km/hr.

,

and Tom will take 18/10 = 1.8 hours to finish the route,

= 1 hr 48 minutes

So he finishes the route at

9:39 + 1:48

= 11:27 am.

what's a double integral that we can't do as an iterated integral? what's an iterated integral that isn't a double integral?

Answers

I guess I don’t understand your question. A double integral (& triple integral) is an iterated integral. An iterated integral is an integral applied to more than one variable.

What property of congruence is illustrated in the statement if ∠ A ≅ ∠ B then ∠ B ≅ ∠ A?

Answers

The property of congruence illustrated in the statement is the transitive property.

The transitive property states that if A is congruent to B and B is congruent to C, then A is congruent to C. In other words, if two things are congruent to a third thing, they are also congruent to each other.

In the statement "If AB ≅ DE, EF ≅ DE then AB ≅ EF," AB is congruent to DE, and EF is congruent to DE, so AB must also be congruent to EF according to the transitive property.

The other properties you listed are not applicable in this case. The symmetric property states that if A is congruent to B, then B is congruent to A. The reflexive property states that every object is congruent to itself. And multiplication is not a property of congruence.

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The question is -

What property of congruence is illustrated in the statement? If AB ≅ DE, EF ≅ DE then AB ≅ EF.

a. Symmetric

c. Reflexive

b. Transitive

d. Multiplication

Michael breeds chickens and ducks. Last month, he sold 505050 chickens and 303030 ducks for \$550$550dollar sign, 550. This month, he sold 444444 chickens and 363636 ducks for \$532$532dollar sign, 532.

Answers

The price of a single chicken is $8 and the price of a single duck is $5.

The prices can be determined by forming the linear equation in two variables.

Given that,

Michael sold last month, 50 chickens and 30 ducks for $550.

This month, he sold 44 chickens and 36 ducks for $532.

Let the price of single chicken be 'a' and the price of a single duck be 'b'. Then the linear equation will be:

50a+30b=550 ____________(1)

44a+36b=532 ____________(2)

Solving equation (1) for the value of 'b'.

b=550-50a/30

b=55/3 - 5a/3  ____________(3)

Putting the value of 'b' in equation (2).

44a+36(55/3 - 5a/3) = 532

128 = 16a

a=8

Putting the value of a in equation (3).

b= 55/3 - 5*8/3

b=5

Thus, The price of a single chicken is $8 and the price of a single duck is $5.

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Michael sold last month, 50 chickens and 30 ducks for $550.

This month, he sold 44 chickens and 36 ducks for $532.

50a+30b=550

44a+36b=532

Solving equation (1) for the value of 'b'.

b=550-50a/30

b=55/3 - 5a/3

Putting the value of 'b'

44a+36(55/3 - 5a/3) = 532

128 = 16a

a=8

Putting the value of a

b= 55/3 - 5*8/3

b=5

Thus, The price of a single chicken is $8 and the price of a single duck is $5.

a flea collar for dogs contains an active ingredient that evaporates at a rate proportional to the amount still present. half of the ingredient evaporates in the first 20 days after the collar is removed from the protective packaging. if the collar becomes ineffective after 70% of the active ingredient has evaporated, how many days does the collar remain effective?

Answers

Therefore ,the collar remain effective for 26.44 days.

Who defines order?

In mathematics, there are numerous ways to use the word "order." It most frequently refers to the quantity of elements in (for example, conjugacy class order, graph order, group order, etc.) or describes the biggest term (for example, curve order, surface order, or polynomial order) that appears in a mathematical object.

Here,

=>Rate of evaporation=k=dr/dt

=> amount still present=R.

Thus ,It's a first order reaction.

So, half life=0.693/k.

20=0.693/k.

=> k=0.0346

Now,

60% of active ingredient has been evaporated.

So, 40% left.

Time taken=T=(2.303/k)log(R/0.4R)

T=(2.303/0.0346)log(5/2)

T=66.56(log5-log2)

T=66.56(0.699-0.301)

T=66.56(0.398)

T=26.44 days.

Therefore ,the collar remain effective for 26.44 days.

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How can you use a square root to relate the side length and area?

Answers

Therefore , we can calculate the side of the length of the square by finding the square root of the given area.

The definition of the square root

The square root of an integer, which is the outcome of multiplication alone, gives the initial number. Squares and square roots are a few of examples of exponents. Think about the number 36. Furthermore, this can be written as 6x6.

Here,

The base length times the height of any quadrilateral yields the area of that shape.

Since the shape is square, we can be certain that all of its sides are equal in length.

Using this information, we can work backwards to determine the length of one side by taking the square root of the area.

For example : Square having area of 25

We can find its length by taking square root of 25

Which comes out to be √25 = 5

Thus , 5 is a length of the side of the square.

Therefore , we can calculate the side of the length of the square by finding the square root of the given area.

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What must be true about the triangle?

Answers

Answer:

All three angles must add up to 180 degrees

Step-by-step explanation:

Is 0 and 1 are prime?

Answers

A prime number is a positive integer greater than 1 that has no positive integer divisors other than 1 and itself. 0 is not a positive integer and 1 is not greater than 1, so they are not considered a prime number.

What is a prime number?

A whole number higher than one that cannot be divided exactly by any other whole number than itself and one is a prime number.

What is whole number?

Complete numbers, the range of numbers that includes zero and natural numbers and not a decimal or fraction.

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What is the equation of the line that passes through (2, -1) and is perpendicular to the line 1 whose equation is y=-1/2
x+4?

Answers

Answer:

Step-by-step explanation:

The point-slope form of the equation of a line is:

[tex]y-y_1=m(x-x_1)[/tex]

So, the equation for this problem, let

[tex](x_1,y_1)=(2,-1)[/tex]

then,

[tex]y-(-1)=m(x-2)\\y+1=m(x-2)[/tex]

If line (a) is perpendicular to line (b), then [tex]m_b[/tex] is equal to [tex]-\frac{1}{m_a}[/tex].  For this problem, let

[tex]m_a=-\frac{1}{2}[/tex] and [tex]m_b=2[/tex]

So,

[tex]y+1=(2)(x-2)\\y+1=2x-4\\(y+1)-1=(2x-4)-1\\y=2x-5[/tex]

13a ^2+14-17a-12a ^2+12a+6a-a^ 2

(A) a-14
(B) a+14
(C) -9a^2+14
(D) -9a^2-5a-14.

Answers

Answer:

B

Step-by-step explanation:

13a ^2+14-17a-12a ^2+12a+6a-a^ 2

=14-17a+12a+6a

=14+a    or     a+14

13 more than four times a number is -93

Answers

Answer:

13

Step-by-step explanation:

(x+13) find its fourth root

which will be......

x⁴+28561=-93

x⁴=-28654

x=13.01

Franklin Middle School's spring concert is next week. The music teacher chose students from the choir and the orchestra to perform solos. There are 25 choir students, and 5 of them have a solo. There are 20 orchestra students, and 4 of them have a solo. Do the two groups have the same ratio of students with a solo to total students?

Answers

For the choir, the ratio is 1/5 and for the orchestra, the ratio is also 1/5, then yes, the two groups have the same ratio

Do the two groups have the same ratio?

Here we just need to compute the two ratios, to do that, we need to take the quotient between the number of students with a solo and the total number of students.

For the choir, there are 25 students and 5 with a solo, so the ratio is:

5/25 = 1/5

For the orchestra, there are 20 students and 4 of them have a solo, so the ratio is:

4/20 = 1/5

So yes, both groups have the same ratio of students with a solo to total students.

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Why do we calculate the mean?

Answers

Mean is calculated to get an idea of the average of the observations in the data set.

The average value of the observations in a data set is called the mean or average . It is calculated by dividing the sum of observations by the number of observations i.e.

u = (x1 + x2 + x3 + .... + xn)/n

where u is the mean , x1 , x2 ...,  xn are data observations and n is the number of observations.

For example, we have values as 1,2,3,4,5 and we want to calculate the mean . Then it is calculated by

u = (1+2+3+4+5) / 5 = 3.

So, the mean is 3.

Therefore, mean is calculated to get an average or an idea of a certain number of observations.

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The sides of a triangle are given by
(3x2 − y2);(4x2−7xy+4y)and (−3x+7xy+8y2)
3x2 − y2;4x2−7xy+4yand (−3x+7xy+8y2)

.

Find its perimeter.

Answers

Answer:

Here is the answer

Step-by-step explanation:

To find the perimeter of a triangle, we need to add up the lengths of all three sides. In this case, the sides of the triangle are given by the expressions 3x2 - y2, 4x2 - 7xy + 4y, and -3x + 7xy + 8y2.

To find the perimeter, we can simply add up these three expressions:

Perimeter = 3x2 - y2 + 4x2 - 7xy + 4y - 3x + 7xy + 8y2

= 7x2 - 3xy + 12y

This is the perimeter of the triangle. Note that the perimeter is a scalar quantity, not a vector, so it does not have a direction associated with it.

What is a multiple of 32?

Answers

32, 64, 96,...... are the multiples of the 32.

What are mathematical operations?

Calculate the answer using a math operator is referred to as a mathematical operation.

Basic mathematical operations are addition, multiplication, subtraction and division.

The given term is 32,

To find the multiple of 32,

Multiply 32 which natural numbers 1, 2, 3, 4, 5.....

32 x 1 = 32.

32 x 2 = 64

32 x 3 = 96

and so on...

Since, there are infinite multiples of 32.

So, 32, 64, 96,.... are the multiples of 32.

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What is the graph of the equation x =- 4?

Answers

The graph of the equation x = -4 is shown in the image attached below.

What is a graph?

In Mathematics, a graph can be defined as a type of chart that is typically used to graphically represent data points or ordered pairs on both the horizontal and vertical lines of a cartesian coordinate, which are the x-coordinate (x-axis) and y-coordinate (y-axis) respectively.

What is the x-intercept?

In Mathematics, the x-intercept can be defined as the point at which the graph of a function crosses the x-coordinate (x-axis) and the value of "y" is equal to zero (0).

By critically observing the graph (see attachment), we can reasonably infer and logically deduce that the x-intercept is equal to -4.

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Is 2x² 7x 0 is quadratic equation?

Answers

Yes, the given equation is a quadratic equation.

What is a quadratic equation?

The meaning of quadratic equation is any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power.

Given is an equation, 2x²-7x = 0

As we know that, a quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared.

On comparing equation 2x²−7x=0 with standard form of quadratic equation

ax ²+bx+c=0:

We get, a=2,b=−7,c=0

Hence, the equation 2x²−7x=0  is a quadratic equation.

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When Deema begins her drive, she is 400 mi from home. She drives at an average rate of 50 mph until she gets home. Draw a graph to represent this situation?

Answers

The linear function to model the problem is written in slope-intercept form as y = -50x + 400

Linear Function

A linear function is of the form f(x) = mx + b where 'm' and 'b' are real numbers. Isn't it looking like the slope-intercept form of a line which is expressed as y = mx + b

m = slope of lineb = y-intercept

In the question given, we can model a linear function to represent this.

Let x represent the distance covered.

The function can be written as;

f(x) = -50x + 400

This function represents the distance left till she gets home

Plotting this on a graph, we would have a straight line intercpeting the x-axis at (8, 0) and the y- axis at (0, 400)

Kindly find attached graph below.

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What are the 4 types of transformations and how do we describe them?

Answers

Four types of transformations are as follow:

1. Rotation : It is based on about any point.

2. Reflection : It is based on over any line.

3. Translation : It is based on a given vector.

4. Dilation : It is based on size.

As given in the question,

Four types of transformations is given by :

1. Rotation : It represent the same image but the image is rotated about a fixed point by certain degree of its preimage.

2. Reflection: It is mirror image of the given image along the line after flipping.

3. Translation: Change in the position of the image without change in the given image.

4. Dilation: In this case size of the image get enlarged or shrink as per given condition.

Therefore, the four types of transformation is given by :

1. Rotation : It is based on about any point.

2. Reflection : It is based on over any line.

3. Translation : It is based on a given vector without change in the image.

4. Dilation : It is based on size.

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Work out the length of AB.
Give your answer to 3 significant figures.
A (-1, 6)
B (5, 3)

Answers

Answer:

AB = 6.71

Step-by-step explanation:

See the attached worksheet.

Find the lengths of the two sides of the right triangle:

 CB = (5 - (-1)) = 6

 CA = (6-3) = 3

Use the Phythagorean Theorem to find AB.

6^2 + 3^2 = AB^2

AB^2 = 45

AB = 6.71

Choose an equivalent system of equations to the following system: (1 point) fx + gy = h qx + ry = s.

Answers

5Fx+5Gy=5H  Qx +Ry=S is a system of equations that is equivalent to the following system.

An equivalent system of equations is a system of equations that has the same solutions as the original system, but the coefficients of the variables may be different.

To determine which of the given systems is equivalent to the original system, you need to solve each system and see if they have the same solutions.

The original system is:

Fx + Gy = H

Qx + Ry = S

The solution to this system can be found by either graphing the equations or using substitution or elimination methods.

If we solve each of the other systems in the same way, we find that the system that is equivalent to the original system is:

C. 5Fx + 5Gy = 5H

Qx + Ry = S

This is because all of the other systems have different coefficients for the variables, and therefore will not have the same solutions as the original system.

The complete question is;-

Choose an equivalent system of equations to the following system:

Fx + Gy = H

Qx + Ry = S

A. 5Fx + 5Gy = 5H

Qx − Ry = S

B. 5Fx + Gy = 5H

Qx + 5Ry = S

C.5Fx + 5Gy = 5H

Qx + Ry = S

D. Fx + 5Gy = 5H

Qx + Ry = S

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did someone here read animal farm i promise i will help u with ur homework if it's about drawing or something;-; Novak Company uses the LCNRV method, on an individual-item basis, in pricing its inventory items. The inventory at December 31, 2020, consists of products D, E, F, G, H, and I. Relevant per unit data for these products appear below. Item D Item E Item F Item G Item H Item I Estimated selling price $151 $139 $120 $113 $139 $113 Cost 95 101 101 101 63 45 Cost to complete 38 38 32 44 38 38 Selling costs 13 23 13 25 13 25 Using the LCNRV rule, determine the proper unit value for balance sheet reporting purposes at December 31, 2020, for each of Boss Company reported the following results for the year ended December 31, 2019, its first year of operations: 2019 Income (per books before income taxes) $ 1,500,000 Taxable income 2,500,000 The disparity between book income and taxable income is attributable to a temporary difference which will reverse in 2019. What should Boss record as a net deferred tax asset or liability for the year ended December 31, 2019, assuming that the enacted tax rates in effect are 40% in 2019 and 35% in 2020 Kaysha's aunt gave her $5,500 when she was born. Her parents invested it at a rate of 4% interest rate compounded annually. No deposits or withdrawals were made. How much money will Kaysha have when she turns 18 years old? What is not a cause of wind? Effective managers should Question 26 options: convince employees to engage in relationship conflict rather than the other forms of conflict. minimize the relationship conflicts that exist in the organization. remove all forms of conflict from the organization because it saps productivity. increase the amount of conflict among employees. In which Africa climate region would you most like to live in and why Help whit number 6 please! Really fast !! Find the area of the shape shown below. Use words from the box to complete the sentences.fungi pathogen poison vaccine virus(a) A bacteria that can cause a disease is an example of a..................................(b) An obligate parasite that must inhabit a host cell to reproduce is a ................................... select the statement that does not correctly use probability to describe an event How do I solve this equation? I dont understand it Help please. Who was Speaker B? i forgot so much from this early part of US History A student did not read the directions to the experiment properly and mixed up where to place the NaOH solution and the vinegar. He put the vinegar in the titrator and the measured amount of NaOH in the beaker. He then added a drop of the phenolphthalein to the solution in the beaker. Does the student need to empty out all of the solutions and start over again or can he go ahead and run the titration? If he runs the titration using the solutions as given above, what should he expect to see happen for results? The dimensions of the rabbit pen (formerly the garden) are 7 yards by 8 yards. When will Claire run out of room for her rabbits? Explain. Knowing that the central portion of the link BD has a uniform cross-sectional area of 800 2, determine the magnitude of the load P for which the normal stress in that portion of BD is 50 . Identify the decimal equlivant that does not have the same characteristic as the other three.Explain.1/12 2/12 3/12 4/12. Write a thesis statement for each type of persuasive speech, using the topic The Right to Privacy or a topic of your choosing. Use the circle below to find the correct value of x: Equation of the line of best fit:y=Correlation coefficient: r=