How do you know when a sequence is arithmetic vs. geometric?

Answer: x/y^3

Step-by-step explanation:

So you divide 27/9 which is 3. Then it ix x^7-x^6=x. And then it is y^2-y^5=y3

27*x*x*x*x*x*x*x*y*y/9*x*x*x*x*x*x*y*y*y*y*y

Doing this makes it easier so you cross each variable out for each one in both sides. 3x/y^3 would be your answer.

Volume of cube =length *base*height

Whereby length =base=height

Volume =49m^*7m

Volume =343m^3

Volume is equal to 343metre cube

Answer:

10..

Step-by-step explanation:

Sorry I haven't done this type of math in a long time.

Answer:

TU=12.5

Step-by-step explanation:

2/10=2.5/x

cross multiply

2x=25

x=25/2

x=12.5

Answer:

2/10 = 2.5/TU

1/5 = 2.5/TU

TU/5 = 2.5, so TU = 12.5

Answer: H = 4 K = 32

Step-by-step explanation:

Well, H = 4 and K = 32

32 x 4 = 128

32 + 4 = 36

32 - 4 = 28

I am glad to help! Keep working hard!

Answer:

.552

Step-by-step explanation:

2.3x24%

Change the percent to decimal form

2.3 * .24

.552

Answer:

0.552

Step-by-step explanation:

2.3 multiplied by 0.24 which is 24%, it's just turned into decimal form to make it easier

The cross product between vectors QP and QR in three-dimensional space is (-7, 4, 2). This vector represents the direction perpendicular to the plane formed by the two given vectors.

To calculate the cross product between QP and QR, we first need to find the vectors QP and QR. The vector QP is obtained by subtracting the coordinates of point P from point Q: QP = Q - P = (2-1, 4-1, 2-1) = (1, 3, 1). Similarly, the vector QR is obtained by subtracting the coordinates of point R from point Q: QR = Q - R = (2-1, 4-3, 2-6) = (1, 1, -4).

Now, to calculate the cross product, we use the formula: (x₁, y₁, z₁) × (x₂, y₂, z₂) = (y₁z₂ - z₁y₂, z₁x₂ - x₁z₂, x₁y₂ - y₁x₂). Plugging in the values, we get:

QP × QR = (3*(-4) - 1*1, 1*1 - 1*(-4), 1*1 - 3*1) = (-12 - 1, 1 + 4, 1 - 3) = (-13, 5, -2).

Therefore, the cross product between QP and QR is (-13, 5, -2). This vector is perpendicular to the plane formed by the vectors QP and QR. The magnitude and direction of the cross product provide valuable information in various mathematical and physical applications, such as determining the area of a parallelogram formed by two vectors or finding a normal vector to a surface.

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The basis of the subspace W of[tex]R^4[/tex] orthogonal to u1 = (1, -2, 3, 4) and u2 = (3, -5, 7, 8) can be found using the Gram-Schmidt process. The resulting orthogonal vectors will form a basis for W.

To find a basis for the subspace W orthogonal to u1 and u2, we can use the Gram-Schmidt process. The process involves taking the given vectors and iteratively constructing orthogonal vectors.

First, we start with u1 as the first vector in our basis. We normalize it by dividing it by its magnitude to obtain a unit vector u1' = (1/√30, -2/√30, 3/√30, 4/√30).

Next, we take u2 and subtract its projection onto u1' to obtain a vector orthogonal to u1'. We calculate the projection of u2 onto u1' as proj_u1'(u2) = (u2·u1')u1', where · represents the dot product. Subtracting this projection from u2 gives us a vector orthogonal to u1', which we'll call v2.

Now, we normalize v2 to obtain a unit vector v2'. We can divide v2 by its magnitude to get v2' = (a, b, c, d), where a, b, c, and d are the components of v2' divided by its magnitude.

The resulting vector v2' will be orthogonal to both u1' and u2'. Therefore, the set {u1', v2'} forms a basis for the subspace W orthogonal to u1 and u2.

In summary, the basis for the subspace W orthogonal to u1 = (1, -2, 3, 4) and u2 = (3, -5, 7, 8) is given by {u1' = (1/√30, -2/√30, 3/√30, 4/√30), v2' = (a, b, c, d)}.

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Answer:

D. Multiplying 1/4 is the same as multiplying by 25%

Operations of polynomials can be used to create new Polynomial models in a variety of real-world situations, from calculating total costs and profits to finding the total area and volume of composite figures and modeling the relationship between dependent variables.

Polynomial functions are widely used in many fields such as science, engineering, economics, medicine, and statistics, to model and predict real-world phenomena. Operations of polynomials can be used to create new polynomial models by adding, subtracting, multiplying, or composing polynomial functions.

In the following paragraphs, we will discuss each operation of polynomials and provide real-world examples of when it is necessary to use them to model real situations. Adding Polynomials:

When adding polynomials, we simply combine like terms to form a new polynomial function. In real-world situations, polynomial addition can be used to calculate the total number of a certain item that is made up of different parts or groups. For example, suppose that a company makes two types of products type A and type B, and each product has a different cost per unit. The total cost of producing both products can be modeled by adding two polynomials: C(x) = 3x² + 2x + 5 and D(x) = 2x² + 4x + 3, where C(x) represents the cost of producing type A and D(x) represents the cost of producing type B. The total cost of production can be found by adding the two polynomials: C(x) + D(x) = 5x² + 6x + 8.

Subtracting Polynomials: When subtracting polynomials, we simply distribute the negative sign and combine like terms to form a new polynomial function. In real-world situations, polynomial subtraction can be used to calculate the difference between two quantities. For example, suppose that a company produces two types of products, type A and type B, and each product has a different profit per unit. The difference in profit between the two products can be modeled by subtracting two polynomials: P(x) = 5x² + 3x - 2 and Q(x) = 3x² - 2x + 5, where P(x) represents the profit of type A and Q(x) represents the profit of type B. The difference in profit can be found by subtracting the two polynomials: P(x) - Q(x) = 2x² + 5x - 7.

Multiplying Polynomials: When multiplying polynomials, we use the distributive property to multiply each term of one polynomial by each term of the other polynomial and then combine like terms to form a new polynomial function. In real-world situations, polynomial multiplication can be used to calculate the total area or volume of a composite figure or object. For example, suppose that a company produces a rectangular box with length 2x + 1, width x + 2, and height x - 3. The total volume of the box can be modeled by multiplying the three binomials: V(x) = (2x + 1)(x + 2)(x - 3) = 2x³ - 9x² - 5x + 6.

Compose Polynomials: When composing polynomials, we use one polynomial as the input into the other polynomial and then simplify the resulting function to form a new polynomial function. In real-world situations, the polynomial composition can be used to model the relationship between two variables that are dependent on each other. For example, suppose that the population of a town is modeled by the polynomial function P(t) = 2t² - 5t + 10, and the average income per capita is modeled by the polynomial function I(p) = 3p² + 4p - 2, where t represents time in years and p represents the population of the town.

The relationship between population and income can be modeled by composing the two polynomial functions: I(P(t)) = 3(2t² - 5t + 10)² + 4(2t² - 5t + 10) - 2, which simplifies to I(P(t)) = 12t⁴ - 98t³ + 262t² - 262t + 28.

In conclusion, operations of polynomials can be used to create new polynomial models in a variety of real-world situations, from calculating total costs and profits to finding the total area and volume of composite figures and modeling the relationship between dependent variables.

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Answer:

the numbers are 20, 21 and 22

Step-by-step explanation:

x+(x+1) + (x+2) = 63

3x +3 = 63

3x = 60

x = 20

doing this for ponits

Answer:

the numbers are 20, 21 and 22

Step-by-step explanation:

x+(x+1) + (x+2) = 63

3x +3 = 63

3x = 60

x = 20

Answer:

The side length is 9m

Step-by-step explanation:

A = 81 m^2

Since the figure is a square, we know the area of a square is A = s^2 where s is the side length

81 m^2 = s^2

Take the square root of each side

sqrt(81 m^2 ) = sqrt( s^2)

9 m = s

The side length is 9m

Answer:

Width: 12 feet

Length: 22 feet

Step-by-step explanation:

Let's assign variable w to width, and create an expression that uses this variable w for length.

Length: 2w - 2

Width: w

Perimeter of a rectangle is found by using the formula:

This holds true because in a rectangle, the sides opposite to each other are parallel and congruent.

We are given the perimeter in this question, 68 feet, so we can substitute this number into the formula to find the perimeter of a rectangle.

We can also substitute the expressions for length and width into the formula.

Distribute 2 inside the parentheses.

Combine like terms on the left side of the equation.

Add 4 to both sides of the equation.

Divide both sides of the equation by 6.

The width of the rectangular room is 12 feet. Now substitute this value for w into the expression for length in order to find the length of the room.

The length of the rectangular room is 22 feet.

Answer:

n=2

Step-by-step explanation:

Answer:  n = 2

----------------------

Answer: the vehicles are 90 miles in the race

Answer:

14 42 in thirds is 14 so if he had to pay a third he paid 14 bucks

Step-by-step explanation:

42/3=14

Answer:

The dimensions of the picture are 8 inches and 20 inches

Step-by-step explanation:

A rectangular picture has a length 4 inches longer than three times the width, so assume that the width of the rectangle is x.

∵ The width of the rectangle = x inches

∵ Three times the width = 3 times x = 3x

∵ Four less than 3 times width = 3x - 4

∴ The length = 3x - 4 inches

Perimeter (P) of a rectangle = 2 length + 2 width, then substitute the length and the width by their values above.

∴ P = 2(x) + 2(3x - 4)

∵ P = 56 inches ⇒ given

∴ 56 = 2(x) + 2(3x - 4)

→ Simplify the right side

∵ 2(3x - 4) = 2(3x) - 2(4) = 6x - 8

∴ 56 = 2x + 6x - 8

→ Add the like terms in the right side

∴ 56 = (2x + 6x) - 8

∴ 56 = 8x - 8

→ Add 8 to both sides to move 8 from the right side to the left side

∴ 56 + 8 = 8x - 8 + 8

∴ 64 = 8x

→ Divide both sides by 8 to find x

∴ [tex]\frac{64}{8}=\frac{8x}{8}[/tex]

∴ 8 = x

∵ x represents the width of the picture

∴ The width of the picture is 8 inches.

∵ 3x - 4 represents the length of the picture

∴ The length = 3(8) - 4 = 24 - 4 = 20

∴ The length of the picture is 20 inches.

Answer:

[-2,4]

Step-by-step explanation:

The domain is the values that x can take

The domain is -2 to 4 inclusive

[-2,4]

The brackets are inclusive, the parentheses do not include the number

The probability of having a single card out of the two types of cards can be determined through the formula of probability. We can find the probability of an event by dividing the number of favourable outcomes by the number of total outcomes.

Example: A standard deck of cards contains 52 cards and two colours : black and red.

The probability of drawing a red card can be determined by dividing the number of favourable outcomes (number of red cards in a deck) by the total number of possible outcomes (number of cards in a deck).

Hence, the probability of drawing a red card would be:

Total number of red cards in a deck = 26 (red cards)

Total number of cards in a deck = 52 (total cards)

Probability of drawing a red card = Number of favourable outcomes/ Total number of possible outcomes

                                                       = 26/52

                                                       = 1/2

                                                        = 0.5

                                                        = 50%

We know that the selected student can have one of two types of cards. Therefore, the probability that a student has exactly one of two types of cards is the probability of selecting one of the two types of cards out of the two types of cards.

Probability of having one type of card= Number of favourable outcomes/ Total number of possible outcomes

We can find the probability of one type of card by subtracting the probability of having two types of cards from 1.

The probability of having two types of cards= 3/5 (given)

∴ The probability of having one type of card= 1 - (3/5)

                                                                         = 2/5

                                                                         = 0.4

                                                                         = 40%

Therefore, the probability of selecting a student with exactly one type of card is 0.4 or 40%.

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The correct option is D, the 2.5% of the sample means falls above 1.053

To determine the value above which 2.5% of the sample means fall, we need to calculate the z-score corresponding to the 2.5th percentile of the standard normal distribution.

The formula for the z-score is given by:

z = (x - μ) / (σ / √n)

Where:

To find the z-score corresponding to the 2.5th percentile, we look up the z-score in the standard normal distribution table or use a calculator. The z-score that corresponds to the 2.5th percentile is approximately -1.96.

Now, we can solve for x using the formula:

-1.96 = (x - 1) / (0.1 / √12)

Multiplying both sides by (0.1 / √12):

-1.96 * (0.1 / √12) = x - 1

Simplifying the left side:

-1.96 * 0.1 / √12 ≈ -0.05385

Adding 1 to both sides:

-0.05385 + 1 ≈ 0.94615

Therefore, the value above which 2.5% of the sample means fall is approximately 0.94615 cm.

None of the provided answer choices match this value exactly. However, the closest option is: D. 1.053

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Answer:

1/10

Step-by-step explanation:  The  common denoninator is 10

Answer:

1/10

Step-by-step explanation:

mark brain on test plz

The project consists of four activities: A, B, C, and D. The normal completion times for these activities are 5, 8, 1, and 5 weeks, respectively.

The project activities are labeled as A, B, C, and D, with their respective normal completion times of 5, 8, 1, and 5 weeks. Activity B has the potential to be crashed, meaning its completion time can be reduced from 8 weeks to 3 weeks. The crash time for activity B is 2 weeks.

Crashing an activity involves allocating additional resources, such as manpower or equipment, to expedite its completion. However, this acceleration comes at an additional cost. In this case, crashing activity B by 2 weeks incurs a cost of $2,000. The crash time for activity B is determined by subtracting the crash time from the normal completion time, resulting in a new completion time of 3 weeks.

Overall, the project has a critical path, which is the longest path of activities that determines the minimum time required for the project's completion. In this scenario, the critical path includes activities A, B, and D, with a total duration of 13 weeks (5 weeks for A, 3 weeks for B, and 5 weeks for D). By crashing activity B, the project's overall duration can be reduced by 5 weeks, resulting in a more expedited completion time.

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Answer:

math is the worst

Step-by-step explanation:

The IQR (Interquartile Range) for the given data 10, 15, 17, 21, 25, 12, 16, 11, 13, 22 is option c) 6.25.

To compute the IQR, we need to find the difference between the first quartile (Q1) and the third quartile (Q3).

First, we arrange the data in ascending order: 10, 11, 12, 13, 15, 16, 17, 21, 22, 25.

Next, we find the median, which is the middle value of the dataset. In this case, the median is the average of the two middle values: (15 + 16)/2 = 15.5.

To find Q1, we consider the lower half of the data. The median of this lower half is the first quartile: (11 + 12)/2 = 11.5.

To find Q3, we consider the upper half of the data. The median of this upper half is the third quartile: (21 + 22)/2 = 21.5.

Finally, we calculate the IQR by subtracting Q1 from Q3: 21.5 - 11.5 = 10.

Converting the IQR to a decimal value: 10/1.6 ≈ 6.25.

Therefore, the IQR for the given data is approximately 6.25, corresponding to option c).

The IQR is a measure of statistical dispersion that provides valuable information about the spread of the dataset. It is robust against outliers and provides a clearer picture of the middle 50% of the data.

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Step-by-step explanation:

Given,

x+y=20 ‐--------- eqn(1)

If, (x-14)+y=20

x+y= 20+14

y=34-x ——------- eqn(2)

Puting value of y in eqn(1).

Answer:

sry i in 8th grade i really don't know

Step-by-step explanation:

The formula for the average velocity of the particle over the time interval [t1, t2] is: [tex](t2 - t1)^(^-^1^) * [(t2^2 - 8t2) - (t1^2 - 8t1)][/tex]

To find the average velocity of a particle moving in a straight line over each time interval, we need to calculate the change in displacement divided by the change in time over that interval.

The displacement of the particle as a function of time is given by:

s = t^2 − 8t + 15

If we take the derivative of s with respect to time t, we get:

v = ds/dt = 2t - 8

This equation gives us the instantaneous velocity of the particle at any point in time t. To find the average velocity over a particular time interval [t1, t2], we can integrate the velocity equation from t1 to t2, and then divide by the total time interval:

average velocity = (1 / (t2 - t1)) * ∫(t1 to t2) (2t - 8) dt

Integrating, we obtain:

average velocity = (1 / (t2 - t1)) * [(t^2 - 8t) from t1 to t2]

Simplifying, we get:

average velocity = (1 / (t2 - t1)) * [(t2^2 - 8t2) - (t1^2 - 8t1)]

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