yall... help pls this is hard

Answer:

See below...

Step-by-step explanation:

v * 7x = 7vx

8c * 6e = 48ec

3a * 4a = 12a^2

8xw * 2w = 18xw^2

8mn * 3m^2n = 24m^3n^2

4acx * 5ax^2 * 6c = 120a^2c^2x^3

4m * 4n = 16mn

3x * 4x = 12x^2

5w * 3wx = 15w^2x

6c * 5ac^2 = 30ac^3

9wx^2 * 6w^2x = 54w^3x^3

9a^2c * 4ac^2e^3 = 36a^3c^3e^3

This value represents the present worth below which the probability is 0.5, indicating a negative present worth.

To estimate the probability that the present worth is negative using the NORM.INV function in Excel,

we need to calculate the present worth of the project and then determine the corresponding probability using the normal distribution.

The present worth of the project can be calculated by finding the sum of the present values of the annual receipts over the 10-year period, minus the initial investment. The present value of each annual receipt can be calculated by discounting it back to the present using the minimum attractive rate of return (MARR).

Using the given information, the present value of the initial investment is $10,000. The present value of each annual receipt is calculated by dividing the expected return of $1,800 by \((1+MARR)^t\),

where t is the year. We then sum up these present values for each year.

We can use the NORM.INV function in Excel to estimate the probability of a negative present worth. The function requires the probability value, mean, and standard deviation as inputs.

Since we have a mean and standard deviation for the present worth,

we can calculate the corresponding probability of a negative present worth using NORM.INV.

This value represents the present worth below which the probability is 0.5. By using the NORM.INV function,

we can estimate the probability that the present worth is negative based on the given data and assumptions.

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14 students had none of the pets mentioned in the problem.

Given Question is related to Sets and Function

By using the principle of inclusion-exclusion,

D = set of students who had a dog

C = set of students who had a cat

F = set of students who had a fish

Let's determine the sizes of the sets and their intersections:

|D| = 50

|C| = 40

|F| = 20

|D ∩ C| = 19

|C ∩ F| = 2

|D ∩ F| = 3

|D ∩ C ∩ F| = 0

|D ∪ C ∪ F| = ?

The size of the union of the sets as follows:

|D ∪ C ∪F| = |D| + |C| + |F| - |D ∩ C| - |C ∩ F| - |D ∩ F| + |D ∩ C ∩ F|

|D ∪ C ∪ F| = 50 + 40 + 20 - 19 - 2 - 3 + 0 = 86

Therefore, there were 86 students who had at least one of these pets.

To find the number of students who had none of these pets, we can subtract this number from the total number of students:

100 - 86 = 14

Therefore, 14 students had none of the pets mentioned in the problem.

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Answer:

65

Step-by-step explanation:

We just need to divide 130 by 2 to find her average.

Answer:

I don't think that there is two same results. sorry I couldn't help

Step-by-step explanation:

for I the answer should be 10 if you replaced each x by 2. f(2) = 3(2) + 4

and for II it will be f-1(4) = 3-1(4) - 4 /5 the answer will be -1.

for III it should be y = 8 or 4

Answer:

126 m^2

Step-by-step explanation:

We can use the formula of the area of a parallelogram:

Hope this helps!!

Answer:126m^2

Step-by-step explanation:

The area of a parallelogram is the same as a rectangle. You must do 9*14=126.

The box and whisker plots and the IQR for each of the data set is given below.

A box and whisker plot has a rectangular box and two lines that connect from it on both sides, where:

The above stated values are referred to as the five-number summary of a data.

The interquartile range (IQR) = Q3 - Q1.

6. The five-number summary for the data set, 32, 34, 36, 37, 36, 37, 38, 37, 38 are:

The IQR is: 37.5 - 35 = 2.5

7. The five-number summary for the data set, 52, 52, 55, 55, 53, 56, 57, 57, 58 are:

The IQR is: 57 - 52.5 = 4.5

8. The five-number summary for the data set, 50, 51, 52, 58, 58, 59, 49, 50, 49 are:

The IQR is: 58 - 49.5 = 8.5

9. The five-number summary for the data set, 18, 16, 15, 19, 11, 14, 12, 14, 16 are:

The IQR is: 17 - 13 = 4

The box and whisker plot for each of the data set given is shown in the diagram below.

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Answer:

156 miles

Step-by-step explanation:

First of all we got,

3 gallons of gas used to drive 117 miles

that mean's

1 gallons of gas =117/3 miles

that is 39 miles

we need to find how far Ian's car can go with 4 gallons of gas

that is 4*39 which gives us 156 miles..

Answer:

I'm pretty positive it should actually be 112.

Step-by-step explanation:

You find the area of a rectangle by multiplying length times width. I don't know how else to explain that all of the answers are incorrect.

To determine if, x, x2, and x4 are linearly independent, we need to see if there exists a non-trivial linear combination of these vectors that equals the zero vector.

Let's suppose there are scalars a, b, and c such that a*x + b*x2 + c*x4 = 0.
We can rewrite this as:
a*x + b*x^2 + c*x^4 = 0*x + 0*x^2 + 0*x^4
This gives us a system of equations:
a = 0
b = 0
c = 0
Since the only solution to this system is a = b = c = 0, we can conclude that ,x, x2, and x4 are linearly independent.

Therefore, there is no non-trivial linear combination of these vectors that equals the zero vector.

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A 95% confidence interval for the mean is (3193, 2607).

Confidence interval in simple words is the range of values that the specific parameter lies within.

Confidence interval for mean is found by the formula,

CI = Х ± t \(\frac{s}{\sqrt{n} }\)

where X is sample mean, s is the standard deviation and n is the sample size.

Sample mean = 2900

s = 1300

n = 55

Degree of freedom = n - 1 = 54

t value of degree of freedom 54 with the probability of exceeding the critical value as 1 - 95% = 5% = 0.05 is 1.674.

CI = 2900 ± (1.674)\(\frac{1300}{\sqrt{55} }\)

   = 2900 ± 293.44

   = (3193.44, 2606.56)

   = (3193, 2607)

Hence the confidence interval is (3193, 2607).

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Answer:

cool, but what is the question?

Answer:

black people

Step-by-step explanation:

Answer: 2x + 4mi >=10 , 3

Step-by-step explanation:
x=days after monday

Since Joseph ran 4 miles the first day, that number stays constant. The 2miles depends on the amount of days he runs for so that is the coefficient. Atleast means greater than or equal to. Using the inequality, we can solve that x >= 3.

2x+4>=10

    -4    -4

2x>=6

/2     /2

x>=3

Answer:

1.205 x 10⁷

Step-by-step explanation:

Answer:

12 packages with 2 toothbrushes and 3 soaps each

Step-by-step explanation:

The directions of the infinitesimal path element d Vector s and infinitesimal area element d Vector A is none of the given option.

The directions of the infinitesimal path element d Vector s and infinitesimal area element d Vector A in Maxwell's equations are not fixed or predetermined to always be in the same direction, always in opposite directions, or always perpendicular to each other.

The orientations of these elements depend on the specific geometry and configuration of the electromagnetic field being considered. The direction of d Vector s is determined by the chosen path or curve along which the integration is performed.

The direction of d Vector A is determined by the orientation of the surface over which the integration is carried out. These orientations can vary depending on the specific problem and the shape of the path or surface involved.

Therefore, the correct answer is E. none of the above, as there is no fixed relationship between the directions of d Vector s and d Vector A in general.

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The question attached here seems to be incomplete, the complete question is:

Two of Maxwell’s equations contain a path integral on the left side and an area integral on the right. The directions of the infinitesimal path element d Vector s and infinitesimal area element d Vector A are:  A. always in the same direction  B. always in opposite directions  C. always perpendicular to each other  D. never perpendicular to each other  E. none of the above

For option A Y = 0, 3, 5; while for B Y(o) E [0,5]. The limit of Sdⁿ is Limited. See the definition of equilibrium solution below.

A solution to a DE whose derivative is zero everywhere is an equilibrium solution.

A horizontal line represents an equilibrium solution on a graph.

You can identify equilibrium solutions given a slope field by locating every place where a horizontal line fits into the slope field.

Note that The Equilibrium solutions when Y' = 0 is:

⇒ y (y-3) (y-5) = =

⇒ Y = 0, y = 3, y = 5

hence,

Y = 0,3,5

For section B:

Given the stated Direction field, we know that:

If y(0) ∈ (0,5), then \(\lim_{x \to \infty }\) y is 3

If y(0) ∈ (3,5), then \(\lim_{x \to \infty }\) y is 3

With regards to values existing beyond the intervals, the result is divergent.

Therefore,

For y (0) ∈ [0,5], limit of Sdⁿ is Limited.

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Full Question:

Consider The Direction Field Below For A Differential Equation Y'=Y(Y?3)(Y?5).

Use The Graph And Equation To Answer The Following Questions.

1) Find The Equilibrium Solutions For The Differential Equation. Answer (Separate By Commas): Y=

2. If The Initial Condition Is Y(0)=C, For What Values Of C Is Limit??Y(T) Finite? Answer (As An Interval): See attached for related Image.

Answer:

-2

Step-by-step explanation:

I hope it helps

Answer:

A) 3 1/2

Explanation:

\(\hookrightarrow \sf \dfrac{7}{8} \div \dfrac{1}{4}\)

rewrite the following

\(\hookrightarrow \sf \dfrac{7}{8} * \dfrac{4}{1}\)

join both fractions

\(\hookrightarrow \sf \dfrac{7*4}{8}\)

multiply

\(\hookrightarrow \sf \dfrac{28}{8}\)

simplify the following

\(\hookrightarrow \sf \dfrac{7}{2}\)

turn into mixed fraction

\(\hookrightarrow \sf 3\dfrac{1}{2}\)

Answer:

\(\dfrac{7}{2}\)

Step-by-step explanation:

Given expression:

\(\dfrac{7}{8} \div \dfrac{1}{4}\)

Simplify the expression:

\(\implies \dfrac{7}{8} \div \dfrac{1}{4}\)

\(\implies \dfrac{7 \div 1}{8 \div 4}\)

\(\implies \dfrac{7}{2}\)

Answer:

X = 21 / 4 (21 over 4)

Step-by-step explanation:

First, we combine like terms:

5x−11=x+10

Step 2: Subtract x from both sides.

5x−11−x=x+10−x

4x−11=10

Step 3: Add 11 to both sides.

4x−11+11=10+11

4x=21

Step 4: Divide both sides by 4.

4x/4 = 21/4

x= 21 / 4

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Hence, the answers are a) 9.14 and b) 7.

a) What is the expected number of times the die comes up 6, when it is rolled 32 times?b) What is the expected number of times the die must be rolled until the first 6 comes up?Solutions:Part a) Let X be the number of times the die comes up 6 when it is rolled 32 times.To find the expected number of times the die comes up 6, we'll apply the formula E(X) = np, where n is the number of trials and p is the probability of success on any given trial.If we look at the bias in this particular cubic die, we see that when the event is {6}, then p({6}) = p = 2p/4. This implies that p = 2/7, therefore: E(X) = np = 32*2/7 = 9.14285714286 = 9.14Part b) Let Y be the number of times the die must be rolled until the first 6 comes up.Let's use the geometric distribution to calculate the expected number of rolls E(Y).Since the event "6" has a probability of 1/7, then p = 1/7. Thus, the expected number of times the die must be rolled until the first 6 comes up is given by E(Y) = 1/p, which is 7 rolls.Hence, the answers are a) 9.14 and b) 7.

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Answer:

x = 49.4

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

tan theta  = opp /adj

tan x = 14/12

Taking the inverse tan of each side

tan ^-1 ( tan x) = tan ^-1 (14/12)

x =49.39870535

x = 49.4

Answer:

x = 49.4

Step-by-step explanation:

It's right triangle , so we can use trigonometry functions

tan θ = opposite side / adjacent side

tan x = 14 / 12

Taking inverse tan of each side

\( \small \sf \leadsto \: tan { }^{ - 1} (tan \: x \: ) = tan \: {}^{ - 1} ( \frac{14}{12}) \\ \)

x = 49.39870535

Round nearest tenth of degree = 49.4

The given integral is ₁∫₀^(π/2) sin²(x)dx.

The trapezoidal rule is given by:(b - a) [(f(a) + f(b))/2]And, the Gauss-Quadrature formula for n = 2 is: ∫ᵇₐ f(x) dx = (b - a) [ w₁ f( [ (b - a)/2 ] gp₁ + (b + a)/2 ) + w₂ f( [ (b - a)/2 ] gp₂ + (b + a)/2 ) ]

Here, a = 0, b = π/2, gp₁ = -0.5773, gp₂ = 0.5773, w₁ = w₂ = 1.

(i) Trapezoidal Rule: The trapezoidal rule with one interval is given by:(b - a) [(f(a) + f(b))/2] = π/4 [sin²(0) + sin²(π/2)] = 0.7854

(ii) Gauss-Quadrature: Using the Gauss-Quadrature formula with n = 2, we get:∫ᵇₐ f(x) dx = (b - a) [ w₁ f( [ (b - a)/2 ] gp₁ + (b + a)/2 ) + w₂ f( [ (b - a)/2 ] gp₂ + (b + a)/2 ) ]= π/2 [ sin²( [ (π/2)/2 ] (-0.5773) + π/4 ) + sin²( [ (π/2)/2 ] (0.5773) + π/4 ) ]= 0.7853Comparing the above two methods, the trapezoidal rule and Gauss-Quadrature method are nearly the same and are close to the exact value.

Exact value = (π/2)/2 - sin(π)/4 = 0.7854Conclusion:Thus, it can be concluded that the given integral using the trapezoidal rule (using only one interval) and Gauss- Quadrature (n=2) is approximately equal to 0.7854.

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Answer:

92.9

Step-by-step explanation:

Answer:

= 74cm²

Step-by-step explanation:

Perimeter of a rectangle

\( = 2(l) + 2(w)\)

therefore

= 2(18) + 2(19)

= 36 + 38

= 74cm².

Answer:

20 × 10 = 200

Step-by-step explanation:

Multiply 2 × 1 = 2 and then add the two zeros onto the end to get 200.

Answer:

the slope of these points is 8/3

The perimeter of the possible larger triangle with possible side lengths of 24, 32 and 40 is 96 units

The perimeter of a figure is the length of the boundary surrounding the figure.

Two triangles that have proportional dimensions are similar triangles

The dimensions (arranged in the order of corresponding sides) of the possible similar right triangles in the question, obtained from a related question, having two similar right triangles, posted online are;

The similarity of the triangles (proportional corresponding sides, indicates that we get;

\(\dfrac{24}{9} = \dfrac{32}{12} = \dfrac{x}{15}\)

Therefore, by cross multiplication, we get;

32 × 15 = 12 × x

x = 32 × 15 ÷ 12 = 40

The perimeter of the larger triangle is; 24 + 32 + 40 = 96

Please find attached the possible diagram of proportional right triangles, created with MS Word, obtained from a question with regards to proportional right triangles online.

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Answer:

Answer:

x= -5

.........

Answer: x = -5

Step-by-step explanation: