Please help me answer these questions in order please. Will give crown. PLEASE NO LINKS!

Answer:

Surface area = 80yd

Step-by-step explanation:

4x3 + 4x4 + 4x3 + 4x4 + 4x3 + 4x3 = 80

hope this helped :D

Given the probabilities P(A) = 0.7, P(Ac) = 0.3, P(B|A) = 0.4, and P(B|Ac) = 0.8, the joint probabilities can be calculated as follows: P(A and B) = 0.28, P(A and Bc) = 0.42, P(Ac and B) = 0.12, and P(Ac and Bc) = 0.18.

The joint probability P(A and B) represents the probability of events A and B occurring simultaneously. It can be calculated using the formula P(A and B) = P(A) * P(B|A). Given that P(A) = 0.7 and P(B|A) = 0.4, we can multiply these probabilities to obtain P(A and B) = 0.7 * 0.4 = 0.28.

It can be calculated as P(A and Bc) = P(A) * P(Bc|A). Since the complement of event B is denoted as Bc, and P(Bc|A) = 1 - P(B|A), we can calculate P(A and Bc) as P(A) * (1 - P(B|A)) = 0.7 * (1 - 0.4) = 0.42.

Finally, P(Ac and Bc) represents the probability of both event A and event B not occurring. It can be calculated as P(Ac and Bc) = P(Ac) * P(Bc|Ac). Using P(Ac) = 0.3 and P(Bc|Ac) = 1 - P(B|Ac), we can calculate P(Ac and Bc) as P(Ac) * (1 - P(B|Ac)) = 0.3 * (1 - 0.8) = 0.18.

Therefore, the joint probabilities are: P(A and B) = 0.28, P(A and Bc) = 0.42, P(Ac and B) = 0.24, and P(Ac and Bc) = 0.18.

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Answer:

a warm, dry air mass moving over an area.

Answer:

x³ - y³ = 0

Step-by-step explanation:

Given : \(\frac{x}{y}+\frac{y}{x}=-1\)

To Find : value of (x³ - y³)

Since, \(\frac{x}{y}+\frac{y}{x}=-1\)

\(\frac{x^2+y^2}{xy}=-1\)

x² + y² = -xy

x² + y² + xy = 0 -----(1)

Since, x³ - y³ = (x - y)(x² + xy + y²) [From the formula, (a³ - b³) = (a -b)(a²+ b² + ab)

                     = (x - y)(0) {From equation (1)]

                     = 0

Therefore, value of x³ - y³ = 0 will be the answer.

The vehicles will meet at 0845 at a distance of 64 km from P when they move at the respective speeds.

The car moves at a speed of 80km/h from P to Q and it takes time t

t = 9.30 - 8.00 = 1 hour 30 minutes or 1.5 hours

Distance covered = speed × time

Distance = 80 × 1.5 = 120 km

Now et the cars meets at a distance of x km from P.

times taken by the car to cover x km = x/80 hours

The lorry travels 120 - x in that same time.

time taken = 70/(120 - x)

Now the time taken must be equal.

Therefore we will form an equation to calculate x.

(120 - x) / 70 = x / 80

or, 960 - 8x = 7x

or, 15x = 960

or, x = 64

Therefore the cars will meet at 64 km from P.

Now time taken by the car to cover 64 km = 64/80 = 0.8 hours = 48 minutes

Hence the cars will meet at 0845 hours.

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Answer:

30 km per hour

Step-by-step explanation:

it accelerated at 30km per hour. 240-150 is 90 km/h 90÷3=30

In this case the answer is very simple. .

Step 01:

Data

side a = 8m

side b = 15m

c = hypotenuse = ?

Step 02:

Pythagoras Theorem Formula

Hypotenuse² = Perpendicular² + Base²

c² = a² + b²

c ² = (8m)² + (15m)²

c ² = 64m² + 225m²

c ² = 289m²

Answer:

LM

Step-by-step explanation:

Usually these problems would already be in order, so since PQ are the first 2 letters of polygon PQRS, then for LMNO, it's LM.

Step-by-step explanation:

Hey there!!!

Here,

The midpoint of AB is M(-3,-3) and coordinates of A is (-8,-2).

Now,

Using midpoint formulae,

\((x,y) =( \frac{x1 + x2}{2} ,\frac{y1 + y2}{2} )\)

Put all values.

\(( - 3,- 3) = ( \frac{ - 8 + x}{2} , \frac{ - 2 + y}{2} )\)

As they are equal, equating with their corresponding elements we get,

\( - 3 = \frac{ - 8 + x}{2} \)

Simplify them.

\( - 6 = - 8 + x\)

\(x = - 6 + 8\)

Therefore, x= 2

Now,

\( - 3 = \frac{ - 2 + y}{2} \)

Simplify them.

\( - 6 = - 2 + y\)

\(y = - 6 + 2\)

Therefore, y = -4.

Therefore, the coordinates of B are (2,-4).

Hope it helps...

Answer:

D

Step-by-step explanation:

Just trying to help??

The statement which is true is; The equation 3.5|6x – 2| =3.5 has one solution.

A one-variable linear equation can only be concluded to have no solution if upon evaluation, the value of the variable cannot be computed due to the fact that the variable diminishes in the process of solving.

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The test statistic is t = 24.135. (option d)

To perform the hypothesis test, we need to calculate a test statistic. In this case, we can use a two-sample t-test since we are comparing the means of two independent samples. The formula for the t-test is:

t = (x₁ - x₂) / (s_p * √(1/n₁ + 1/n₂))

where x₁ and x₂ are the sample means, s_p is the pooled standard deviation, n₁ and n₂ are the sample sizes.

Using the data provided, we can calculate the sample means and standard deviations for the two samples:

x₁ = 26.3%, s₁ = 0.37%, n₁ = 6

x₂ = 16.9%, s₂ = 0.57%, n₂ = 6

As per the percentage, we can then calculate the pooled standard deviation:

s_p = √(((n₁-1)*s₁² + (n₂-1)*s₂²) / (n₁+n₂-2))

s_p = √(((6-1)*0.37² + (6-1)*0.57²) / (6+6-2)) = 0.471%

Finally, we can calculate the t-statistic:

t = (26.3 - 16.9) / (0.471 * √(1/6 + 1/6)) = 24.135

Therefore, the test statistic is d) t = 24.135.

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Complete Question:

Solid fats are more likely to raise blood cholesterol levels than liquid fats. Suppose a nutritionist analyzed the percentage of saturated fat for a sample of 6 brands of stick margarine (solid fat) and for a sample of 6 brands of liquid margarine and obtained the following results:

Stick = [26.1, 26.5, 26.5, 25.8, 26.7, 26.2]

Liquid = [16.6, 16.5, 17.1, 17.5, 17.7, 16.3]

We want to determine if there a significant difference in the average amount of saturated fat in solid and liquid fats. What is the test statistic? (assume the population data is normally distributed)

a) t = 34.225

b) z = 34.225

c) z = 34.725

d) t = 24.135

e) t = 34.725

By using the unitary method to set up a proportion, we were able to determine that 5000 words in Times New Roman 12 font would be approximately 20 pages when double-spaced with 1-inch margins.

To determine how many pages 5000 words would be in Times New Roman 12 font, we first need to understand the concept of a unitary method. In mathematics, a unitary method is a technique used to solve problems that involve proportions or ratios. It involves finding a single unit or value and using that to determine other values or units.

In this case, we can use a unitary method to determine how many pages 5000 words would be. First, we need to know how many words are typically on a page in Times New Roman 12 font. This can vary depending on factors such as spacing and margin size, but as a general rule, a page with Times New Roman 12 font, double-spaced with 1-inch margins, can hold around 250 words.

Using this value, we can set up a proportion:

250 words = 1 page

5000 words = x pages

To solve for x, we can cross-multiply:

250 x x = 5000

Dividing both sides by 250 gives us:

x = 20

Therefore, 5000 words in Times New Roman 12 font would be approximately 20 pages when double-spaced with 1-inch margins.

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Constructing a confidence interval for the mean of a distribution based on one sample is Confidence level = 1 - significance level.

The definition of the confidence level is (1-α). Zα is the number of standard deviations from the mean at which X with a certain probability lies. If Z = 1.96 is selected, the likelihood that the real mean falls inside the range is set at 0.95, hence we are asking for the 95% confidence interval.

Let us consider,

Confidence level = c

significance level \(= \alpha\)

\(c = 1 - \alpha\)

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Answer:

A

Step-by-step explanation:

just plug in the formula

To find the rate at which the diameter of a sphere is changing when the volume is 4000π/3 cm3, you can use the formula for the volume of a sphere, which is given by the equation V = (4/3)πr3, where V is the volume, π is the constant approximately equal to 3.14, and r is the radius of the sphere.

You can rearrange this formula to solve for the radius of the sphere:

r = (3V/(4π))^(1/3)

Plugging in the known values, you get:

r = (3(4000π/3)/(4π))^(1/3)

= (4000/4)^(1/3)

= 100^(1/3)

= 10

The diameter of the sphere is twice the radius, so the diameter is 2r = 2 * 10 = 20 cm.

To find the rate at which the diameter is changing, you can use the formula for the rate of change of a function, which is given by the equation rate of change = (change in y)/(change in x). In this case, the change in y is the change in the diameter of the sphere and the change in x is the change in the volume.

Since the volume is increasing at a rate of 50π cm3/min and the diameter is changing at the same time, you can use the formula to solve for the rate of change of the diameter:

rate of change = (change in y)/(change in x)

= (change in diameter)/(50π cm3/min)

To find the change in the diameter, you would need to know the initial and final diameters of the sphere. Without this information, it is not possible to determine the rate of change of the diameter.

Answer:

hai

Step-by-step explanation:

Answer:

21120 hours long

Step-by-step explanation:

42240=20 miles

42240/2=21120h

Answer:

200 hours (yes, very long)

Step-by-step explanation:

You take about 2,000 steps a mile. So, you have to multiply 2,000 by 20 which is 40,000. Then, you have to divide 40,000 by 20. Lastly, you will end up with 200 hours as your answer.

Hope this helps :)

A Voronoi diagram is a division of a plane into areas near each of a given set of objects in mathematics. These things are just infinitely many points in the plane in the simplest scenario (called seeds, sites, or generators). There is a region, known as a Voronoi cell, for each seed that is made up of all points in the plane that are closer to that seed than to any other point. A set of points' Voronoi diagram and Delaunay triangulation are identical.

We are aware that any intersection of half-planes results in a convex region bordered by a collection of linked line segments. Voronoi edges are the line segments that define the limits of Voronoi regions. These edges' termini are known as Voronoi vertices.

Voronoi diagram:

A Voronoi diagram in mathematics is a division of a plane into areas near to each of a given set of objects. These things are simply infinitely many plane points in the most basic scenario (called seeds, sites, or generators).

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Answer:

its A i just took the quiz

hope i helped!

Step-by-step explanation:

The answer is in the image

the predicates R(x) and H(x) along with quantifiers and logical connectives, we can represent the given statements as ∀x(R(x) → H(x)) and ∃x(R(x) ∧ ¬H(x)).

(a) Using the predicates R(x) and H(x) to represent "x is a rabbit" and "x hops" respectively, the English sentence "For every animal in the domain, if it is a rabbit, it hops" can be expressed in terms of quantifiers and logical connectives as:

∀x(R(x) → H(x))

This translates to "For all x in the domain, if x is a rabbit, then x hops."

(b) Similarly, the English sentence "There is at least one animal such that it is a rabbit and it doesn't hop" can be expressed in terms of quantifiers and logical connectives as:

∃x(R(x) ∧ ¬H(x))

This translates to "There exists an x in the domain such that x is a rabbit and it does not hop."

In summary, using the predicates R(x) and H(x) along with quantifiers and logical connectives, we can represent the given statements as ∀x(R(x) → H(x)) and ∃x(R(x) ∧ ¬H(x)).

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the partial regression coefficients in a multiple regression model represent the expected change in the dependent variable associated with a unit change in the corresponding independent variable, holding other variables constant.

In the context of the three-variable model Yt = α1 + α2x2+ a3x3 where α2 and α3 are partial regression coefficients, the coefficients represent the changes in Y associated with a unit change in x2 and x3, respectively. The partial regression coefficient represents the expected change in Y when x2 or x3 increases by one unit, while keeping other variables constant.
The partial regression coefficient for α2, α2, measures the effect of the variable x2 on Y. It tells us how much Y is expected to change for every unit increase in x2, holding the other variables constant. Similarly, the partial regression coefficient for α3, α3, measures the effect of the variable x3 on Y, and tells us how much Y is expected to change for every unit increase in x3, holding the other variables constant.
It is important to note that the regression coefficients are estimates obtained from sample data, and are subject to sampling variability. Therefore, it is important to consider the uncertainty associated with the estimates when interpreting the results.
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The length of the square is 9 inches when a rectangle with a surface area of 180 inches is created by lengthening one side of a square by 1 inches and shortening another by 2 inches.

Given that,

A rectangle with a surface area of 180 inches is created by lengthening one side of a square by 1 inches and shortening another by 2 inches.

We have to find the square's side length should be determined.

We know that,

Let us take the length of the square as x.

So,

The length of one side of a square is increased by 1 inch means

x+1

The length of other side of the square is diminished by 2 inch to form a rectangle means

2x

The area of the rectangle is length × breath.

180=(x+1)(2x)

2x²+2x-180=0

x²+x-90=0

x²+10x-9x-90=0

x(x+10)-9(x+10)=0

(x+10)(x-9)=0

We get,

x+10=0 ⇒ x=-10

x-9=0 ⇒ x=9

The length can not be negative so x=9

Therefore, The length of the square is 9 inches when a rectangle with a surface area of 180 inches is created by lengthening one side of a square by 1 inches and shortening another by 2 inches.

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Therefore, the percent increase in iron is 50%.

To calculate the percent increase in iron, we need to find the difference between the new and old iron content, divide it by the old iron content, and then multiply by 100 to get the percentage.

Old iron content: 1.2 mg

New iron content: 1.8 mg

Difference = New iron content - Old iron content

= 1.8 mg - 1.2 mg

= 0.6 mg

Percent increase = (Difference / Old iron content) * 100

= (0.6 mg / 1.2 mg) * 100

= 0.5 * 100

= 50%

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Answer:

3

Step-by-step explanation:

if you look at the graph, you can see that the line intercepts where the points are

Answer:

it's 25, just did it

Step-by-step explanation:

1 /2  o f  ( − 10 ) =  − 5 ,  ( − 5 )^ 2  =  25

Answer:

C. 25

Step-by-step explanation: