Somebody help me real quick

The right Riemann sum for arctan(1 + xdx) is Σ[arctan(1 + iΔx)]Δx, where i ranges from 1 to n and Δx is the width of each subinterval. The correct answer among the options provided is (arctan(1 + Δx) + arctan(1 + 2Δx) + ... + arctan(1 + nΔx))Δx.

In a right Riemann sum, the function is evaluated at the right endpoint of each subinterval. Therefore, we add up the values of arctan(1 + iΔx) at the endpoints of the subintervals, where i ranges from 1 to n. The width of each subinterval is Δx, so we multiply the sum by Δx to get the approximate value of the integral.

The provided expression (arctan(1 + Δx) + arctan(1 + 2Δx) + ... + arctan(1 + nΔx))Δx satisfies the conditions of a right Riemann sum, where the function is evaluated at the right endpoint of each subinterval. Therefore, this is the correct option among the given choices.

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Answer:

35

Step-by-step explanation:

70/2 is 35 therefore there is 35 students per teacher. Please mark brainliest

Answer:

35 students per 1 teacher

Step-by-step explanation:

if its not right im sorry

Answer:

(B)

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Answer:

\( \sf \: b) \: - 9\)

Step-by-step explanation:

Given function,

→ g(x) = -2x² + 3x - 9

Now we have to,

→ Find the required value of g(0).

Then the value of g(0) will be,

→ g(x) = -2x² + 3x - 9

→ g(0) = -2(0)² + 3(0) - 9

→ g(0) = -2(0) + 0 - 9

→ g(0) = 0 + 0 - 9

→ [ g(0) = -9 ]

Hence, option (b) is correct.

Answer:roughly around 70 yards since a whole foot ball field including the the touch down is about 120 yards I think

Step-by-step explanation:

The required product of the given product numeral is -1536. Option C is correct.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,

Here,
=  (−16)(−4)(−24)
= 64(-24)
= -1536

Thus, the required product of the given product numeral is -1536. Option C is correct.

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The correct option is b) 2. The maximum rank of the 8×8 matrix AB can be determined by considering the rank properties of matrix products.

The rank of a product of two matrices is at most equal to the minimum of the ranks of the individual matrices involved.
In this case, the matrix A is an 8×5 matrix with rank 4, and the matrix B is a 5×8 matrix with rank 2.
To find the maximum rank of the 8×8 matrix AB, we take the minimum of the ranks of A and B, which is 2.
Therefore, the maximum rank of the 8×8 matrix AB is 2.
So, the correct option is b) 2.

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The maximum rank of the product of two matrices is equivalent to the minimum rank of its component matrices. So in this case, the maximum rank of the 8x8 matrix formed by multiplying the two given matrices is 2.

In the field of Mathematics, specifically Linear Algebra, the rank of a matrix product cannot exceed the minimum rank of its factors. In your case, you have an 8x5 matrix A with a rank of 4 and a 5x8 matrix B with rank 2. When you compute their product, yielding an 8x8 matrix AB, the maximum rank will be equal to the lesser rank of both component matrices A and B.

So, based on these facts, the answer to your question is that the maximum rank of the 8x8 matrix AB is 2, which corresponds to option b).

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Answer:

27720

Step-by-step explanation:

multiple all of them 11x14x9x20 = 27720

Answer:

(3480 - 600)/2 = 1440cm

Step-by-step explanation:

Therefore, the set up integral for the surface area is given as ∫[1, 3]2πln(x)√[1+(1/x)²]dx.

To obtain the area of the surface, obtained by rotatingy = ln x, 1 ≤ x ≤ 3about the x-axis, the integral must be set up as follows:

We have the curve given as y = ln x, with the limits of integration being 1 ≤ x ≤ 3.

To obtain the surface area obtained by rotating the curve around the x-axis, we need to apply the formula for surface area, which is given as:

S = ∫[a, b]2πy(x)√[1+(dy/dx)²]dxwhere y = ln x, a = 1, and b = 3

Substituting the given values, we get:S = ∫[1, 3]2πln(x)√[1+(dy/dx)²]dxFor √[1+(dy/dx)²], we need to take the derivative of y = ln x and square it as follows:dy/dx = 1/x (differentiating ln x)

Squaring this, we get:1+(dy/dx)² = 1 + (1/x)²

Substituting back into the integral, we get:S = ∫[1, 3]2πln(x)√[1+(dy/dx)²]dx= ∫[1, 3]2πln(x)√[1+(1/x)²]dx.

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Answer:

x=0

Step-by-step explanation:

2x-9=0

2x=9

x=9/2

4x+10=0

4x=-10

x=-5/2

2(9/2)-9 =0

4(-5/2)+10=10

Answer:

answer is 20................................

Let Cesar's, Carmen's and Dalila's amount be represented by x, y and z respectfully.

Since they're money sum up to $95.34, the first expression will be;

x+y+z=95.34

Carmen_y_ is $12.12 less than cesar_x, so the equation will be ;

y=x-12.12

Cesar_x_raised $35more than Dalila_z. So the equation will be;

x=z+35

making z the subject, z=x-35 .

Substituting the Second equation into the first one, we get;

x+x-12.12+z=95.34

Subtracting the third equation into the new equation we get;

x+x-12.12+x-35=95.34

Simplifying, we get 3x- 47.12= 95.34.

3x=142.46

22 % probability of selecting 2 oranges from the fruits..

A probability is the number of desired outcomes divided by the number of total outcomes.

The probability of choosing 2 oranges will be calculated as:-

Initially, there are 8+11+5+12 = 36 fruits, of which 12 are oranges.

The total number of the fruits is 36 and we have to choose 2 oranges

Then

\(P=\dfrac{8}{36}=0.22=22\%\)

Therefore there is a 22 % probability of selecting 2 oranges from the fruits..

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If the diameter of the Ferris wheel is 80 meters, then a rider will travel  251.2 meters in one complete rotation around the Ferris wheel.

The diameter of the Ferris wheel = 80 meters

The radius of the Ferris wheel = Diameter / 2

= 80/2

= 40 meters

The Total distance travelled by the rider in one revolution = The circumference of the wheel

The circumference of the wheel = 2πr

Where r is the radius of the wheel

Substitute the values in the equation

The circumference of the wheel = 2×3.14×40

= 251.2 meters

Hence, if the diameter of the Ferris wheel is 80 meters, then a rider will travel  251.2 meters in one complete rotation around the Ferris wheel

The complete question is :

If the diameter of the Ferris wheel is 80 meters, how far does a rider travel in one complete rotation around the Ferris wheel?

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Answer:

127

Step-by-step explanation:

Since the digit after the point (tens digit) is less than 5, we will round down and get 127.

Answer:

127

Step-by-step explanation:

127.39 rounded to the nearest whole number is 127

So the 9 in the hundreths place rounds the 3 in the tenths place to a 4 but the 4 doent round the 7 in the ones place to an 8. And sice your at the ones you can stop with an answer of 127.

hope ths helps just let me know if you have any questions about my answer:P

Answer: -0.56 (with a line over the 5)

Step-by-step explanation:  I found my answer by dividing 5.000 by 9 which is 0.56. Then, I wrote a line over the 5, so that I don’t have to repeat the number 5, multiple times.

Answer:

3 times - 2,times 8-13

You solve the ones in the bracket first

(the rule of BODMAS)

So 8-13 first, then

-2times 8-13,then

Then you get your answer

Answer:

400 feet

Step-by-step explanation:

real

1 feet = 12 inches

5 feet = 60 inches

scale

3 inches = 20 feet

60 inches=

60/3 = 20

20*20= 400

therefore 5 feet tall equall 400 feet

The actual length of the building will be 400 feet.

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The scale of the model is,

⇒ 3 inches = 20 feet

Now,

Since, The scale of the model is,

⇒ 3 inches = 20 feet

And, The model is 5 feet tall.

Since, 1 feet = 12 inches

So, 5 feet = 60 inches

Here, The scale of the model is,

⇒ 3 inches = 20 feet

So, The actual length of the building = 60 × 20/3

                                                         = 400 feet

Thus, The actual length of the building = 400 feet.

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The number of bacteria  After 3 hours, in the petri dish would be approximately 823,542,481.

To calculate the number of bacteria in the petri dish after a certain number of hours, you can use the formula:

Number of bacteria = Initial number of bacteria × (growth factor)^(number of hours)

In this case, the initial number of bacteria is 500,500,500 and the growth factor is 1.21.21, point, 2.

Let's calculate the number of bacteria after 1 hour:

Number of bacteria after 1 hour = 500,500,500 × (1.21.21, point, 2)^1

Number of bacteria after 1 hour ≈ 500,500,500 × 1.21.21, point, 2 ≈ 605,662,605

After 1 hour, the number of bacteria in the petri dish would be approximately 605,662,605.

If you want to calculate the number of bacteria after multiple hours, you can simply raise the growth factor to the power of the number of hours. For example, to calculate the number of bacteria after 3 hours:

Number of bacteria after 3 hours = 500,500,500 × (1.21.21, point, 2)^3 ≈ 500,500,500 × 1.21.21, point, 2 × 1.21.21, point, 2 × 1.21.21, point, 2 ≈ 500,500,500 × 1.64642042 ≈ 823,542,481

After 3 hours, the number of bacteria in the petri dish would be approximately 823,542,481.

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The statements about the given geometric series are as follows: a) False, the common ratio is 0.85. b) False, in the sum formula, a = 500, and r = 0.85. c) False, the sum, if the series has 5 terms, is not 1,854.

a) The common ratio of a geometric series is the factor by which each term is multiplied to obtain the next term. In this case, the series decreases by 15% successively, which means the common ratio is 1 minus 15% (or 0.85), not 1.15. Therefore, statement a is false.

b) The sum formula for a geometric series is given by S = \(a(1 - r^n) / (1 - r)\), where S is the sum, a is the first term, r is the common ratio, and n is the number of terms. Given that a = 500 and the series decreases by 15%, the common ratio is 0.85. Therefore, the correct sum formula would be

S = \(500(1 - 0.85^5) / (1 - 0.85)\). Thus, statement b is false.

c) To calculate the sum of a geometric series with 5 terms, we can use the sum formula mentioned earlier. Plugging in the values, we find that the sum is not equal to 1,854 (rounded to the nearest integer). Therefore, statement c is false.

d) Using the sum formula, we can calculate the sum of the geometric series with 9 terms. Plugging in a = 500, r = 0.85, and n = 9, we find that the sum is approximately 2425 (rounded to the nearest integer). Hence, statement d is true.

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Answer:

Are this form 1 question

Answer:

V= a³

V=(6x²y⁵)³

V= 216x⁶y¹⁵

Step-by-step explanation:

If U and V are orthogonal then the magnitude of U times V will be U.V = 0 or |UxV| = uv.

U and V are two orthogonal vectors.

since the angle between them is θ = 90⁰

let u and v be the magnitudes of the vectors U and V respectively.

so first dot-product: If two non-zero vectors are orthogonal than the dot product of these vectors will be zero. Dot product of two vectors is expressed by:

U.V = uv cosθ

since these vectors are orthogonal so,

U.V = uv cos90⁰ = 0

And Cross-product: Magnitude Cross product of two orthogonal vectors will be equal to product of magnitude of these vectors.

|UxV| = uv sin θ

|UxV| = uv sin 90⁰ = uv

Therefore, U.V = 0, |UxV| = uv.

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The length of the base and the height of the triangle in feet are 16 feet and 6 feet respectively.

An equation is an expression that shows the relationship between two or more numbers and variables. An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

Let b represent the base of the triangle and h is the height, hence:

b = 2h + 4       (1)

Also, the area of the triangle is 48 square feet:

48 = (1/2)bh

96 = bh

(2h + 4)h = 96

2h² + 4h - 96 = 0

h = 6

b = 2(6) + 4 = 16

The length of the base and the height of the triangle in feet are 16 feet and 6 feet respectively.

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Answer:

No graphs was presented but its the last one shown in the photo

The leaf's height as a function of time is determined as h(t) = 12 - 0.25t - 4.9t².

The equation for the motion of the leaf is calculated as follows;

h = vt + ¹/₂gt²

where;

The leaf's height as a function of time is given as;

h(t) = 12 - 0.25t - 4.9t²

Due to presence of gravity, the decline in the height of the leaf will be gradual.

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Answer:

B, C, and D

Step-by-step explanation:

B

C

D

Answer:

IT B, C, and D

Step-by-step explanation:

B, C, and D are the right answers. Mark me brainliest please.

Answer:

4.325 meters per second squared.

Step-by-step explanation: