\(\sqrt4x^{3}\)

Answer:

FOIL

Step-by-step explanation:

" is just a mnemonic. It helps some people to remember all the steps needed to multiply two binomials. It "makes sense" because it's methodical and gives the right answer.

a.)The probability of getting a sum which is a multiple of 3 = 1/3

b.)The probability of getting a sum which is a multiple of 4 = 1/4

To calculate the probability of the given event, the formula that should be used is given as follows;

Probability = possible event/sample space.

For a.)

sample space = 36

possible event = 12

probability = 12/36 = 1/3

For b.)

sample space = 36

possible event = 9

probability = 9/36 = 1/4

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a) The function f(x, y)=  \(2e^-^x - y, z = -7, 11.\) The curves are decreasing exponential functions.

b) The y - intercept of the level curves for the  value of k are found as:

k = -7 => y = 9

c)The y values of the asymptotes of the level curves for these values of k are found as

k = -7 => y = 7.

The level curves of a function of two variables

z = f(x, y)

are the curves where the function assumes a constant value k.

Therefore, the curves are solution of the equation

f(x, y) = k

The level curves of the function for the given values of z.

f(x, y) = \(2e^-^x - y, z = -7, 11.\)

are found solving the equation

\(f(x,y) =k = > 2e^-^x-y=k\\\\= > y= 2e^-^x-k\)

The curves are decreasing exponential functions. See the graph of the function.

b) The y - intercept of the level curves for the  value of k are found as:

x = 0 => y = 2 - k

k = 11 => y = -9

k = -7 => y = 9

c) The y values of the asymptotes of the level curves for these values of k are found as

\(\lim_{x \to \infty} 2e^- ^x-k=-k\)

k = 11 => y = -11

k = -7 => y = 7.

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Answer:

Both rectangles and squares have four sides of equal length.

Step-by-step explanation:

Rectangle and square are the geometrical figures having four sides. They are the quadrilaterals with four sides. A rectangle is the quadrilateral in which opposite sides are equal. In a square all the sides are of equal length. The sides of both the rectangle and square are parallel. All angles form the right angles.

Answer:

  y = 5x +2

Step-by-step explanation:

The point (0, 2) tells us the y-intercept is 2.

If we translate the table down 2 units by subtracting 2 from every y-value, it becomes ...

  6, 30

  -2, -10

  0, 0

  10, 50

We notice these values are all related by a factor of 5 (they are proportional). That means the equation will be a straight line with slope 5 and y-intercept 2.

  y = 5x +2

The sampling probability refers to the property of an element of a given population in its given probability to become a part of a sample during the drawing of a single sample.

It is a defined and distinguished technique that is based on the principle of random selection to study a certain part of a concerning population. Furthermore, in this specific method, every member of the population has the possibility of having an equal chance of being chosen for the sample.

One backlash in the field of using sampling probability is it's very time-consuming and has a higher expenditure in comparison to other methods.

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The y-intercept of the given function is 0 i.e (0, 0).

The term "intercept" refers to the location where a line or curve crosses a graph's axis. The x-intercept is the point at which the x-axis is crossed. The y-intercept is the point at which the y-axis is crossed.

We can find intercepts of a line by simply taking any one of the coordinates as 0, for example, take x = 0 to calculate the y-intercept and take y = 0 to calculate the x-intercept.  

Here we have

y = -2(2)ˣ + 2  

To find the y-intercept take x = 0

=> y = -2(2)⁰ + 2  

=> y = -2(1) + 2

=> y = -2 + 2

=> y = 0

Therefore,

The y-intercept of the given function is 0 i.e (0, 0).

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The ladder gets propped against the house, making a 75 degree angle with the ground. We can use the fact that cos(75°)=base distance/length of ladder to figure out the length of the base. Multiplying both sides by length of ladder we get, length of ladder×cos(75°)=base distance.Nov 6, 2019

Answer:

The cost of an adult ticket is 7.

Step-by-step explanation:

4t + 21 = 49

    - 21 = 28

4t = 28

/4 = 7

t = 7

The most complete and accurate choice is (c) Both (a) and (b) are correct.

To prove the equation E(X^2) = ∫0∞ 2x(1 - F(x)) dx, we can use either approach (a) or (b) to show the validity of the equation.

Approach (a) uses Tonelli's theorem, which allows us to interchange the order of integration for nonnegative random variables. It starts by expressing E(X^2) as the double integral of X(ω)^2 with respect to the joint distribution P. By applying Tonelli's theorem, we interchange the order of integration and rewrite it as ∫[0,∞] 2x ∫[X(ω)≥x] dP dx. The inner integral represents the probability that X(ω) is greater than or equal to x, which can be written as 1 - F(x). Evaluating the outer integral gives ∫[0,∞] 2x(1 - F(x)) dx, thus proving the equation.

Approach (b) directly uses the fact that for a nonnegative random variable U, E(U) = ∫0∞ (1 - F_U(u)) du, where F_U(u) is the distribution function of U. By letting U = X^2, we have E(X^2) = E(U) = ∫0∞ (1 - F_X^2(u)) du. Since the distribution of U is F_X(u), we can replace F_X^2(u) with F_X(u) in the integral, resulting in ∫0∞ (1 - F_X(u)) du. Finally, by substituting x = u, we obtain ∫0∞ 2x(1 - F(x)) dx, which matches the desired equation.

Therefore, the most complete and accurate choice is (c) Both (a) and (b) are correct because both approaches are valid and provide a rigorous proof of the equation E(X^2) = ∫0∞ 2x(1 - F(x)) dx.

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The most complete and accurate choice is (c) Both (a) and (b) are correct.

To prove the equation E(X^2) = ∫0∞ 2x(1 - F(x)) dx, we can use either approach (a) or (b) to show the validity of the equation.

Approach (a) uses Tonelli's theorem, which allows us to interchange the order of integration for nonnegative random variables. It starts by expressing E(X^2) as the double integral of X(ω)^2 with respect to the joint distribution P. By applying Tonelli's theorem, we interchange the order of integration and rewrite it as ∫[0,∞] 2x ∫[X(ω)≥x] dP dx. The inner integral represents the probability that X(ω) is greater than or equal to x, which can be written as 1 - F(x). Evaluating the outer integral gives ∫[0,∞] 2x(1 - F(x)) dx, thus proving the equation.

Approach (b) directly uses the fact that for a nonnegative random variable U, E(U) = ∫0∞ (1 - F_U(u)) du, where F_U(u) is the distribution function of U. By letting U = X^2, we have E(X^2) = E(U) = ∫0∞ (1 - F_X^2(u)) du. Since the distribution of U is F_X(u), we can replace F_X^2(u) with F_X(u) in the integral, resulting in ∫0∞ (1 - F_X(u)) du. Finally, by substituting x = u, we obtain ∫0∞ 2x(1 - F(x)) dx, which matches the desired equation.

Therefore, the most complete and accurate choice is (c) Both (a) and (b) are correct because both approaches are valid and provide a rigorous proof of the equation E(X^2) = ∫0∞ 2x(1 - F(x)) dx.

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288 square inches is the area of the rectangular octagon.

The formula Area = (apothem * perimeter)/2 will be used to calculate the area of a regular octagon.

The apothem is the distance between the center and the midpoint of a side, and the perimeter is the sum of the lengths of all eight sides.

In this instance, the perimeter is indicated as 8 inches for the apothem and 9 inches for each side.

Perimeter = 8 * 9 inches = 72 inches

Now we can use the formula to find the area:

Area = (apothem * perimeter)/2

Area = (8 inches * 72 inches)/2

Area = 288 square inches

Therefore, the area of the regular octagon is 288 square inches.

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Answer:

A ,D , F

Step-by-step explanation:

A) x-3=0 , x=3

B 1+x=2 , x=2-1=1 , x=1

C 9-x=3 , x=9-3=6 , x=6

D) 6=2x , x=6/2=3 , x=3

E (1/5)x=3 , x=3*5=15 , x=15

F) x^2=9 x=√9 , x=3

Answer:

0.5 is rational

\( \sqrt{24} \)

is irrational

3.42859873 is irrational

\( \frac{0}{100} \)

is rational

Explanation:

0.5 can be a fraction. (1/2)

Square root of 24 cant be a fraction.

3.42859873 cant be a fraction.

0/100 is a fraction.

Answer:

0.5: Rational

\(\sqrt{24\): Irrational

3.42859873: Rational

0/100: Rational

Step-by-step explanation:

I just took this quiz today and I got it right. hope this helps have a great day! :)

Answer:

it is correct step

Step-by-step explanation:

it has no wrong in it b/c it subtract 1x from both side

Answer:

If its multiple choice then any number between 7 and 8 but closer the 8 should be the answer. If not, then I don't know

Step-by-step explanation:

92.54/12 = 7.71

The mean price per item is 7.712 $

What is average ?

It is calculated by dividing the sum of the values in a set by their number in order to determine the central or typical value in the set, particularly the mean, median, or mode.

It is given that the total amount spend on grocery store is 92.54$ for purchasing 12 items in total and to find the mean that is average price per item we divide the total amount by number of items :

mean price per item = total amount spend on grocery/ total number of items

                       mean =  92.54$/ 12

                                 = 7.712 $

Therefore, the mean price per item is 7.712 $

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Area = length x height

area = 10 1-4 x 7 = 71 3/4 sq.ft.

Answer: 71 3/4

Answer: 0.26

Step-by-step explanation:

As per given , we have

P(green tail) = 0.36

P(red fins) = 0.59

P(both a green tail and red fins ) = 0.21

Now, P(Neither red fin nor green tail )= 1 - P(either red fin or green tail )

[P(neither A nor B)= 1- P(either A or B)]

= 1-(P(green tail) +P(red fins)+P(both a green tail and red fins ))

[P(A or B)= P(A)+P(B)-P(A and B)]

= 1- (0.36+0.59-0.21)

= 1-(0.74)

= 0.26

Hence, the probability that the selected fish will not have a red fin or a green tail = 0.26

Answer:

k=-9

Step-by-step explanation:

k-8+8=-17+8

k=-9

Step-by-step explanation:

k-8=17

k-8+8=17+8

k=25

Answer:

10

Step-by-step explanation:

Answer:

Step-by-step explanation:

57 / 514

=   57 / 514

(Decimal: 0.110895)

Rewrite the equation as  

x /14 =  5/ 7 .  x/ 14 =  5/ 7

Multiply both sides of the equation by  

14.14  ⋅  x /14 =  14 ⋅ 5 /7

Simplify both sides of the equation.

Tap for fewer steps...

Cancel the common factor of  14 .  

Cancel the common factor.

14 ⋅  x /14 =  14 ⋅ 5 /7

Rewrite the expression.

x = 14 ⋅ 5 /7

Simplify  14 ⋅  5/ 7 .

Cancel the common factor of  7 .

Factor  7  out of  14 .

x = 7 ( 2 ) ⋅ 5/ 7

Cancel the common factor.

x = 7 ⋅  2 ⋅  5/ 7

Rewrite the expression.

x  = 2 ⋅ 5

Multiply  2  by  5 .

x = 10

Answer:

x>3

Step-by-step explanation:

basically just divide that 4 joint to 12 which is 3

Three of the seven phases of the impulse purchase cycle. The other phases include antecedent, search, and selection.

The impulse purchase cycle is a model that describes the process of making an impulsive purchase. It is typically divided into seven phases:

Antecedent: This phase is characterized by a need or desire for something. It can be triggered by a variety of factors, such as boredom, hunger, or a sudden craving for a particular product.

Search: In this phase, the consumer begins to actively search for a product that will satisfy their need or desire. They may search online or in physical stores, and they may consider various options before deciding on a product.

Selection: In this phase, the consumer narrows down their options and selects a specific product that they want to purchase. They may consider factors such as price, quality, and convenience when making their decision.

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The expense amount is more than the savings amount. No, it's short $207 then the correct option is A.

Statistics is the study of collection, analysis, interpretation, and presentation of data or to discipline to collect, and summarise the data.

From the table, we have

The amount of the savings will be

Saving amount = $ 20

Then the amount of the expense will be

Expense amount = 150 + 75 + 2 = 227

Then the budgeted amount covers the actual amount for expenses, savings, and emergencies will be

→ savings amount - expense amount

→ 20 - 227

→ $ 207

Thus, the expense amount is more than the savings amount. No, it's short $207.

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Answer: x = 28

Please give Brainliest if this helped you

Step-by-step explanation:

Yes, this statement is correct. There are ways to address this issue and obtain more accurate and reliable results.

Conditional heteroskedasticity, also known as "heteroskedasticity," occurs when the variance of the error term in a regression model is not constant across all observations. This can lead to biased and inconsistent coefficient estimates, which in turn can result in false inference when using t-statistics and f-statistics.

One way to address the issue of heteroskedasticity is to use robust standard errors, which can provide more accurate coefficient estimates and lead to more reliable inference. Another approach is to use a different estimation method, such as generalized least squares (GLS), which can account for heteroskedasticity and provide more accurate coefficient estimates.

In conclusion, conditional heteroskedasticity can result in biased and inconsistent coefficient estimates, leading to false inference when using t-statistics and f-statistics. However, there are ways to address this issue and obtain more accurate and reliable results.

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Answer:

x=-3y

x+3y=12

0=12

Step-by-step explanation:

Answer:

x=-6, x=6

Step-by-step explanation:

|x| means the distance that x is from zero, so there are only two real possibilities. The only two numbers are +-6.

The surface area of the composite figure is 622 sq. m.

A prism is a polyhedron with two parallel polygonal bases. A rectangular prism is one with four rectangular sides and two parallel rectangular bases. The area of the lateral sides and rectangular bases together make up the surface area of the rectangular prism. The surface area of a rectangular prism is measured in square units.

The surface area of the composite figure is the addition of area of all the shapes in the solid.

Here, the composite figure comprises of a rectangular prism and a triangular prism.

The surface area of the triangular prism is given by:

SA = bh + (b1 + b2 + b3)l

For the given figure b1 = 4, b2 = 5, b3 = 3, b = 3, h = 4, and l = 19.

Substituting the values we have:

SA = (3)(4) + (4 + 5 + 3)(19)

SA = 12 + (12)(19)

SA = 240 sq. m.

The surface area of the rectangular prism is:

SA = 2(bh + hl + lb)

Substituting the values of b = 5, h = 4 and l = 19 we have:

SA = 2 (5(4) + (4)(19) + (19)(5))

SA = 382 sq. m.

The total surface area is:

240 + 382 = 622 sq. m.

Hence, the surface area of the composite figure is 622 sq. m.

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(A) The formula for the moose population P in terms of t, the years since 1990, is P(t) = 250t + 3720.

(B) The model predicts the moose population to be 5770 in 2002.

We know that the moose population in 1992 was 3720 and in 1997 was 4370. So, the population increased by 650 in 5 years. This means that the population is increasing at a rate of 650/5 = 130 moose per year.

We can use this information to write a linear equation for the moose population. The general form for a linear equation is y = mx + b, where m is the slope and b is the y-intercept. In this case, y is the moose population P, x is the number of years since 1990, m is the slope of 130, and b is the y-intercept of 3720.

Substituting these values into the linear equation, we get P(t) = 130t + 3720.

To predict the moose population in 2002, we can substitute t = 12 (the number of years since 1990) into the equation. This gives us P(12) = 130(12) + 3720 = 5770.

Therefore, the model predicts the moose population to be 5770 in 2002.

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