Let A E Mmn (C), UE Mmm(C). If U is unitary, show that UA and A have the same singular values.

The expression 1/tan(x) + tan(x) is equal to cos(x) + sin(x). Therefore, option B. Sin(x)cos(x) is correct.

To simplify the expression 1/tan(x) + tan(x), we need to find a common denominator for the two terms.

Since tan(x) is equivalent to sin(x)/cos(x), we can rewrite the expression as:

1/tan(x) + tan(x) = 1/(sin(x)/cos(x)) + sin(x)/cos(x)

To simplify further, we can multiply the first term by cos(x)/cos(x) and the second term by sin(x)/sin(x):

1/(sin(x)/cos(x)) + sin(x)/cos(x) = cos(x)/sin(x) + sin(x)/cos(x)

Now, to find a common denominator, we multiply the first term by sin(x)/sin(x) and the second term by cos(x)/cos(x):

(cos(x)/sin(x))(sin(x)/sin(x)) + (sin(x)/cos(x))(cos(x)/cos(x)) = cos(x)sin(x)/sin(x) + sin(x)cos(x)/cos(x)

Simplifying the expression further, we get:

cos(x)sin(x)/sin(x) + sin(x)cos(x)/cos(x) = cos(x) + sin(x)

Therefore, the expression 1/tan(x) + tan(x) is equal to cos(x) + sin(x).

From the given choices, the best answer that matches the simplified expression is:

B. sin(x)cos(x)

for such more question on equivalent

https://brainly.com/question/9657981

#SPJ8

If I'm sure, there is no simplied form to 14$.

But if it was adding zeros it would be $14.00

Is this what your looking for?

Applying tangent theorems, we have: 1. Perimeter = 68, 2. measure of the intercepted arc = 76°.

One of the tangent theorems states that two tangents that intersect to form an angle outside a circle are congruent, and they form a right angle with the radius of the circle.

1. Applying the tangent theorem, we have:

JA = JB = 14

AL = CL = 12

CK = BK = 8

Perimeter = JA + JB + CL + AL + CK + BK

= 14 + 14 + 12 + 12 + 8 + 8

= 68.

2. Since the radius of the circle forms a right angle with the tangents, therefore, one part of the central angle opposite the intercepted arc would be:

180 - 90 - (104)/2

= 38°

Measure of the intercepted arc = 2(38) = 76°

Learn more about tangent theorems on:

https://brainly.com/question/9892082

#SPJ1

The constant of proportionality is 1.6 km/cm, and the real-world distance corresponding to a route of 3.2 cm on the map would be 5.12 km.

a) The constant of proportionality between the map and the real world can be calculated by dividing the real-world distance by the corresponding distance on the map.

In this case, since 1 cm on the map corresponds to 1.6 km in the real world, the constant of proportionality would be 1.6 km/1 cm, which simplifies to 1.6 km/cm.

b) To convert the distance of 3.2 cm on the map to the real-world distance, we can multiply it by the constant of proportionality. So, 3.2 cm ˣ  1.6 km/cm = 5.12 km.

Therefore, a route that measures 3.2 cm on the map would have a length of 5.12 km in the real world.

Learn more about proportionality

brainly.com/question/8598338

#SPJ11

The least common multiple (LCM) of the polynomials x² - 32x - 10 and 2x + 10 is 2(x + 2)(x - 10)(x + 5).

To calculate the LCM, we need to find the polynomial that contains all the factors of both polynomials, while excluding any redundant factors.

Let's first factorize each polynomial to identify their prime factors:

x² - 32x - 10 = (x + 2)(x - 10)

2x + 10 = 2(x + 5)

Now, we can construct the LCM by including each prime factor once and raising them to the highest power found in either polynomial:

LCM = (x + 2)(x - 10)(2)(x + 5)

Simplifying the expression, we obtain:

LCM = 2(x + 2)(x - 10)(x + 5)

Therefore, the LCM of x² - 32x - 10 and 2x + 10 is 2(x + 2)(x - 10)(x + 5).

To know more about LCM (Least Common Multiple), refer here:

https://brainly.com/question/24510622#

#SPJ11

The statement that the constraint that illustrates the consumption of a given resource in making the two products is given by: 3X1+5X2 ≤ 120. This relationship implies that both products can consume more than 120 units of that resource. is False.

The constraint 3X1 + 5X2 ≤ 120 indicates that the combined consumption of products X1 and X2 must be less than or equal to 120 units of the given resource. This constraint sets an upper limit on the total consumption, not a lower limit.

Therefore, the statement that both products can consume more than 120 units of that resource is false.

If the constraint were 3X1 + 5X2 ≥ 120, then it would imply that both products can consume more than 120 units of the resource. However, in this case, the constraint explicitly states that the consumption must be less than or equal to 120 units.

To satisfy the given constraint, the company needs to ensure that the total consumption of products X1 and X2 does not exceed 120 units. If the combined consumption exceeds 120 units, it would violate the constraint and may result in resource shortages or inefficiencies in the production process.

Learn more about: constraint

https://brainly.com/question/17156848

#SPJ11

Given that there are 8 students on the curling team and 12 students on the badminton team, with 5 students participating in both teams, we need to determine the total number of students on both teams.

To find the total number of students on both teams, we can add the number of students on each team and then subtract the number of students who are participating in both.

Number of students on the curling team = 8

Number of students on the badminton team = 12

Number of students participating in both teams = 5

Total number of students on both teams = (Number of students on curling team) + (Number of students on badminton team) - (Number of students participating in both teams)

                                         = 8 + 12 - 5

                                         = 20 - 5

                                         = 15

Therefore, the total number of students on both the curling team and the badminton team is 15. The correct option is c. 15.

Learn more about Combination:  brainly.com/question/4658834

#SPJ11

Using the method of undetermined coefficients, one solution of the given differential equation is y = A cos(8t) + B sin(8t) + C e²t, where A, B, and C are constants.

To find a particular solution using the method of undetermined coefficients, we assume a solution of the form y = A cos(8t) + B sin(8t) + C e²t, where A, B, and C are undetermined coefficients to be determined.

We differentiate y to find y' and substitute the expressions into the given differential equation − 4y' + 67y = 80e²¹ cos(8t) + 32e²¹ sin(8t) + 9e²t. By comparing the coefficients of the trigonometric and exponential terms on both sides of the equation, we can solve for A, B, and C.

After determining the values of A, B, and C, we substitute them back into the assumed solution y = A cos(8t) + B sin(8t) + C e²t. This gives us one particular solution of the differential equation.

It's important to note that the method of undetermined coefficients may not work in all cases, especially when the non-homogeneous term has a similar form to the complementary solution. In such cases, variations of parameters or other techniques may be required.

Learn more about Coefficients,

brainly.com/question/1594145

#SPJ11

To determine the profit or loss at the current unit, the information regarding costs and revenue associated with the unit must be considered.

To calculate the profit or loss at the current unit, the revenue generated by the unit must be subtracted from the total costs incurred. If the result is positive, it represents a profit, while a negative result indicates a loss.

The calculation involves considering various factors such as production costs, operational expenses, and the selling price of the unit. By subtracting the total costs from the revenue generated, the net financial outcome can be determined.

It's important to note that without specific cost and revenue figures, it's not possible to provide an exact profit or loss amount. However, by performing the necessary calculations using the available data, the profit or loss at the current unit can be determined accurately, rounded to two decimal points for precision.

Learn more about profit or loss : brainly.in/question/31589

#SPJ11

This function is also not surjective because there is no input that maps to a negative output. Therefore, f3 is a function, but it is not bijective.

A function is a relation between a set of inputs and a set of possible outputs with the property that each input is related to exactly one output.

The following are the given relations:

1. f₁ CRX R, f₁ = {(x, y) E RxR |2x - 3= y²}

To verify whether this relation is a function, we will assume the input values as x1 and x2 respectively.

After that, we will check the output for each input and it should be equal to the output obtained from the relation.

Therefore, f₁ = {(x, y) E RxR |2x - 3= y²}x1 = 2,

y1 = 1

f₁(x1) = 2(2) - 3

       = 1y2

       = -1f₁(x2)

       = 2(2) - 3

       = 1

Since, there are two outputs (y1 and y2) for the same input (x1), hence this relation is not a function.

The following relations are not functions: f₁ CRX R, f₁ = {(x, y) E RxR |2x - 3= y²}

f2 CRX R, f2 = {(z,y) E RxR | 2|z| = 3|y|}

f3 CRXR, f3= {(x, y) = RxR | y-x² = 5}

2. f2 CRX R, f2 = {(z,y) E RxR | 2|z| = 3|y|}

To check whether it is a function or not, we will use the same method as used above

.f2(1) = 2(1)

       = 2,

f2(-1) = 2(-1)

        = -2

Since for every input, there is only one output. Thus, f2 is a function.

f2 is neither surjective nor injective, since two different inputs yield the same output (2 and -2).

3. f3 CRXR, f3= {(x, y) = RxR | y-x² = 5}

For every input, there is only one output, which means that f3 is a function. However, this function is not injective, as different inputs (such as -2 and 3) can produce the same output (for example, y = 1 in both cases).

To learn more on function:

https://brainly.com/question/11624077

#SPJ11

Answer: A) Yes, mold A is an exponential function that decreases faster than mold B, which is eventually an increasing quadratic function.

Step-by-step explanation:

To determine whether the number of spores in mold B will ever be larger than in mold A, we need to compare the growth patterns of the two functions. The function f(x) = 100(0.75)^(x-1) represents mold A, and it is an exponential function. Exponential functions decrease as the exponent increases. In this case, the base of the exponential function is 0.75, which is less than 1. Therefore, mold A is a decreasing exponential function. The function g(x) = 100(x-1)^2 represents mold B, and it is a quadratic function. Quadratic functions can have either a positive or negative leading coefficient. In this case, the coefficient is positive, and the function represents a parabola that opens upwards. Therefore, mold B is an increasing quadratic function. Since mold B is an increasing function and mold A is a decreasing function, there will be a point where the number of spores in mold B surpasses the number of spores in mold A. Thus, the correct answer is:

A) Yes, mold A is an exponential function that decreases faster than mold B, which is eventually an increasing quadratic function.

Answer:

Step-by-step explanation:

The probability of getting an even number on the spinner after one spin is: 1/2

We are given the spinner as shown in the attached image and we see that it has the following numbers:

5, 6, 2 and 3

Now, we want to find the probability of getting an even number for each spin.

The probability is:

Probability = Number of favorable outcomes/Total number of outcomes.

There are two even numbers out of the 4 numbers on the spinner.

Thus:

P(even number) = 2/4 = 1/2

Read more about probability of the Spinner at: https://brainly.com/question/3765462

#SPJ1

Therefore, at the end of three years, Jackson will have approximately $14,717.33 in his savings account.

To calculate the final amount Jackson will have in his savings account, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:

A = the final amount

P = the principal amount (initial deposit)

r = the annual interest rate (in decimal form)

n = the number of times interest is compounded per year

t = the number of years

In this case, Jackson deposited $400 at the end of each month, so the principal amount (P) is $400. The annual interest rate (r) is 6%, which is equivalent to 0.06 in decimal form. The interest is compounded monthly, so n = 12 (12 months in a year). The time period (t) is 3 years.

Substituting these values into the formula, we get:

A = 400(1 + 0.06/12)^(12*3)

Calculating further:

A = 400(1 + 0.005)^36

A = 400(1.005)^36

A ≈ $14,717.33

Therefore, at the end of three years, Jackson will have approximately $14,717.33 in his savings account.

Learn more about compound interest: brainly.com/question/3989769

#SPJ11

This is the equation of the tangent line at t = -1 for the given parametric equation. It uses an independent variable known as a parameter and dependent variables that are defined as continuous functions of the parameter and independent of other variables.

To find the equation of a parabola with a given directrix and focus, we can use the standard form of the equation for a parabola:

1. The directrix is a vertical line, so the equation of the directrix can be written as x = -10.5.
The focus is given as (-9.5, 7).

The vertex of the parabola will lie halfway between the directrix and the focus, so the x-coordinate of the vertex is the average of -10.5 and -9.5, which is -10.
Since the parabola is symmetric with respect to its vertex, the y-coordinate of the vertex will be the same as the y-coordinate of the focus, which is 7.

Using the standard form of the equation for a parabola, we can write the equation as follows:

(x - h)^2 = 4p(y - k)

where (h, k) is the vertex and p is the distance between the vertex and the focus.

In this case, the vertex is (-10, 7) and the focus is (-9.5, 7), so p = 0.5.

Plugging in the values, we get:

(x - (-10))^2 = 4(0.5)(y - 7)

Simplifying, we have:

(x + 10)^2 = 2(y - 7)

This is the equation of the parabola.

2. To find the slope of the tangent line, we need to find the derivative of y with respect to x, dy/dx.

Using the chain rule, we have:

dy/dx = (dy/dt) / (dx/dt)

Differentiating the given parametric equations, we get:

dx/dt = 6
dy/dt = 4t^3

Plugging these values into the chain rule formula, we have:

dy/dx = (4t^3) / 6

Simplifying, we get:

dy/dx = (2/3)t^3

To find the slope of the tangent line at t = -1, we substitute t = -1 into the equation:

dy/dx = (2/3)(-1)^3
      = (2/3)(-1)
      = -2/3

So, the slope of the tangent line at t = -1 is -2/3.

To find the equation of the tangent line, we can use the point-slope form of the equation:

y - y1 = m(x - x1)

where (x1, y1) is a point on the line and m is the slope.

Since we are looking for the equation of the tangent line at t = -1, we can substitute t = -1 into the parametric equations to find the corresponding point on the curve:

x = 6t
x = 6(-1)
x = -6

y = t^4
y = (-1)^4
y = 1

Using the point (-6, 1) and the slope -2/3, we can write the equation of the tangent line as:

y - 1 = (-2/3)(x - (-6))

Simplifying, we have:

y - 1 = (-2/3)(x + 6)

This is the equation of the tangent line at t = -1 for the given parametric equation.

To know more about "Parametric Equation":

https://brainly.com/question/30451972

#SPJ11

a.  The probability that this runner will complete this road race: In less than 160 minutes is 0.0764. The correct answer is C.

b.  The probability that this runner will complete this road race: In 215 to 245 minutes is 0.1125 The correct answer is C.

a. To find the probability for each scenario, we'll use the given normal distribution parameters:

Mean (μ) = 190 minutes

Standard Deviation (σ) = 21 minutes

Probability of completing the road race in less than 160 minutes:

To calculate this probability, we need to find the area under the normal distribution curve to the left of 160 minutes.

Using the z-score formula: z = (x - μ) / σ

z = (160 - 190) / 21

z ≈ -1.4286

We can then use a standard normal distribution table or statistical software to find the corresponding cumulative probability.

From the standard normal distribution table, the cumulative probability for z ≈ -1.4286 is approximately 0.0764.

Therefore, the probability of completing the road race in less than 160 minutes is approximately 0.0764. The correct answer is C.

b. Probability of completing the road race in 215 to 245 minutes:

To calculate this probability, we need to find the area under the normal distribution curve between 215 and 245 minutes.

First, we calculate the z-scores for each endpoint:

For 215 minutes:

z1 = (215 - 190) / 21

z1 ≈ 1.1905

For 245 minutes:

z2 = (245 - 190) / 21

z2 ≈ 2.6190

Next, we find the cumulative probabilities for each z-score.

From the standard normal distribution table:

The cumulative probability for z ≈ 1.1905 is approximately 0.8820.

The cumulative probability for z ≈ 2.6190 is approximately 0.9955.

To find the probability between these two z-scores, we subtract the cumulative probability at the lower z-score from the cumulative probability at the higher z-score:

Probability = 0.9955 - 0.8820

Probability ≈ 0.1125

Therefore, the probability of completing the road race in 215 to 245 minutes is approximately 0.1125. The correct answer is C.

Learn more about probability at https://brainly.com/question/32274851

#SPJ11

Let's calculate the total number of beads that Lacey has based on the given information.

Answer: 39 beads

Step-by-step explanation:

Lacey has 14 red beads.

She has 6 fewer yellow beads than red beads. This means that the number of yellow beads is 14 - 6 = 8.

She also has 3 more green beads than red beads. This means that the number of green beads is 14 + 3 = 17.

To find the total number of beads, we add up the number of red, yellow, and green beads: 14 + 8 + 17 = 39.

Therefore, Lacey has a total of 39 beads.

Hans will have approximately $3944.88 in his savings account after six years, assuming he makes no withdrawals.

To calculate the amount Hans will have in his savings account after six years with compound interest, we can use the formula for compound interest:

A = P(1 + r/n)^(n*t)

Where:

A is the final amount

P is the principal amount (initial deposit)

r is the annual interest rate (in decimal form)

n is the number of times interest is compounded per year

t is the number of years

In this case, Hans deposited $3500, the interest rate is 2% (0.02 in decimal form), and the interest is compounded continuously.

Using the formula, we have:

A = 3500 * (1 + 0.02/1)^(1 * 6)

Since the interest is compounded continuously, we use n = 1.

A = 3500 * (1 + 0.02)^(6)

Now, we can calculate the final amount after six years:

A = 3500 * (1.02)^6

A ≈ 3500 * 1.126825

A ≈ 3944.87875

After rounding to the nearest cent, Hans will have approximately $3944.88 in his savings account after six years, assuming he makes no withdrawals.

Learn more about Compound interest here

https://brainly.com/question/14295570

#SPJ11

Step-by-step explanation:

See image

√x³= ³√x² some values of x.

Let's assume that this equation is true for some value of x. Then:√x³= ³√x²

Cubing both sides gives us: x^(3/2) = x^(2/3)

Multiplying both sides by (2/3) gives: x^(3/2) * (2/3) = x^(2/3)

Multiplying both sides by 3/2 gives us: x^(3/2) = (3/2)x^(2/3)

Thus, we have now determined that if the equation is true for a certain value of x, then it is true for all values of x.

However, the converse is not necessarily true. It's because if the equation is not true for some value of x, then it is not true for all values of x.

As a result, we must investigate if the equation is true for some values of x and if it is false for others.Let's test the equation using a value of x= 4:√(4³) = ³√(4²)2^(3/2) = 2^(4/3)3^(2/3) = 2^(4/3)

There we have it! Because the equation does not hold true for all values of x (i.e. x = 4), we can conclude that the answer is "some values of x."

Know more about equation here,

https://brainly.com/question/29657983

#SPJ11

For part (a), we have found that a = 18822 and b = 18982 satisfy a^2 ≡ b^2 (mod N), where N = 61063. By computing gcd(N, a - b), we can find a nontrivial factor of N.

In part (a), we are given N = 61063 and two congruences: 18822 ≡ 270 (mod 61063) and 18982 ≡ 60750 (mod 61063). We observe that 270 = 2 · 3^3 · 5 and 60750 = 2 · 3^5 · 5^3. These congruences imply that a^2 ≡ b^2 (mod N), where a = 18822 and b = 18982.

To find a nontrivial factor of N, we compute gcd(N, a - b). Subtracting b from a, we get 18822 - 18982 = -160. Taking the absolute value, we have |a - b| = 160. Now we calculate gcd(61063, 160) = 1. Since the gcd is not equal to 1, we have found a nontrivial factor of N.

Therefore, in part (a), the values of a and b satisfying a^2 ≡ b^2 (mod N) are a = 18822 and b = 18982. The gcd(N, a - b) is 160, which gives us a nontrivial factor of N.

For part (b), a similar process can be followed to find the values of a, b, and the nontrivial factor of N.

Learn more about congruences here:

https://brainly.com/question/31992651

#SPJ11

The probability of the monkey picking a red candy from any of the bottles is 0.75.

Let L, M, S be the events that the monkey chooses the largest, mid-size and small bottle respectively.P(R) be the probability that the monkey chooses a red candy from the chosen bottle.

P(B) be the probability that the monkey chooses a blue candy from the chosen bottle.

P(L) = 0.5 (Given)

P(M) = 0.4 (Given)

P(S) = 1 - P(L) - P(M) = 0.1 (Since there are only three bottles)

Now, P(R/L) = 8/10

P(B/L) = 2/10

P(R/M) = 5/12

P(B/M) = 7/12

P(R/S) = 4/6

P(B/S) = 2/6

Now, Let's find the probability of the monkey picking a red candy:

P(R) = P(L)P(R/L) + P(M)P(R/M) + P(S)P(R/S)

P(R) = 0.5 × 8/10 + 0.4 × 5/12 + 0.1 × 4/6

P(R) = 0.75

The probability of the monkey picking a red candy from any of the bottles is 0.75.

Therefore, the correct answer is 0.75.

Learn more about probability at

https://brainly.com/question/31305993

#SPJ11

Local minimum: (7, 3); Saddle point: (-3, 3).  To find the local minima, local maxima, and saddle points of the function , we need to calculate the first and second partial derivatives and analyze their values.

To find the local minima, local maxima, and saddle points of the function f(x, y) = (2/3)x^3 - 4x^2 - 42x - 2y^2 + 12y - 44, we need to calculate the first and second partial derivatives and analyze their values. First, let's find the first partial derivatives:

f_x = 2x^2 - 8x - 42; f_y = -4y + 12.

Setting these derivatives equal to zero, we find the critical points:

2x^2 - 8x - 42 = 0

x^2 - 4x - 21 = 0

(x - 7)(x + 3) = 0;

-4y + 12 = 0

y = 3.

The critical points are (x, y) = (7, 3) and (x, y) = (-3, 3). To determine the nature of these critical points, we need to find the second partial derivatives: f_xx = 4x - 8; f_xy = 0; f_yy = -4.

Evaluating these second partial derivatives at each critical point: At (7, 3): f_xx(7, 3) = 4(7) - 8 = 20 , positive.

f_xy(7, 3) = 0 ---> zero. f_yy(7, 3) = -4. negative.

At (-3, 3): f_xx(-3, 3) = 4(-3) - 8 = -20. negative;

f_xy(-3, 3) = 0 ---> zero; f_yy(-3, 3) = -4 . negative.

Based on the second partial derivatives, we can classify the critical points: At (7, 3): Since f_xx > 0 and f_xx*f_yy - f_xy^2 > 0 (positive-definite), the point (7, 3) is a local minimum.

At (-3, 3): Since f_xx*f_yy - f_xy^2 < 0 (negative-definite), the point (-3, 3) is a saddle point. In summary: Local minimum: (7, 3); Saddle point: (-3, 3).

To learn more about partial derivatives click here: brainly.com/question/31397807

#SPJ11

The primitive function of the given function f(x) = -5/2 * x is F(x) = -5/4 * x² + C where C is the constant of integration. This means that F(x) is the antiderivative of f(x).

To find the antiderivative, integrate the given function with respect to x.

When we integrate the given function f(x) = -5/2 * x, we get;

∫f(x)dx = ∫-5/2 * x dx

= -5/2 ∫x dx

= -5/2 * x²/2 + C

The constant of integration C is an arbitrary constant and could take any real value.

Therefore, the antiderivative of f(x) is

F(x) = -5/4 * x² + C where C is a constant of integration.

The primitive function is usually the antiderivative of a function. The antiderivative of a function is its inverse operation of differentiation.

Therefore, to find the primitive function, we integrate the given function with respect to x.

In this case, the primitive function is given by F(x) = -5/4 * x² + C.

The primitive function of the given function f(x) = -5/2 * x is F(x) = -5/4 * x² + C where C is the constant of integration. This function is obtained by integrating f(x) with respect to x. The constant of integration C is an arbitrary constant and could take any real value.

To know more about antiderivative visit:

brainly.com/question/31396969

#SPJ11

Answer:

m² - 4

Step-by-step explanation:

(m-2) (m+2)

= m² + 2m - 2m - 4

= m² - 4

For the value of x = 4, matrix A will have no inverse.

If a matrix A has no inverse, then its determinant equals zero. The determinant of matrix A is defined as follows:

|A| = 1(2x3 - 3x2) - 2(1x3 - 3x1) + 3(1x2 - 2x1)

we can simplify and solve for x as follows:|A| = 6x - 12 - 6x + 6 + 3x - 6 = 3x - 12

Therefore, we must have 3x - 12 = 0 for matrix A to have no inverse.

Hence, x = 4. That is the value of x for which the matrix A does not have an inverse.

For the value of x = 4, matrix A will have no inverse.

Know more about matrix here,

https://brainly.com/question/28180105

#SPJ11

The 2(p − 3)! ≡ −1 (mod p) for an odd prime p.

To prove this statement, we can use Wilson's theorem, which states that for any prime number p, (p - 1)! ≡ -1 (mod p).

Since p is an odd prime, p - 1 is an even number. Therefore, we can rewrite p - 1 as 2k, where k is an integer.

Now, let's consider (p - 3)!. We can rewrite it as (p - 1 - 2)!. Using the fact that (p - 1)! ≡ -1 (mod p), we have (p - 3)! ≡ (p - 1 - 2)! ≡ -1 (mod p).

Multiplying both sides of the congruence by 2, we get 2(p - 3)! ≡ 2(-1) ≡ -2 (mod p).

Since p is an odd prime, -2 is congruent to p - 2 (mod p). Therefore, we have 2(p - 3)! ≡ -2 ≡ p - 2 (mod p).

Adding p to both sides, we get 2(p - 3)! + p ≡ p - 2 + p ≡ 2p - 2 ≡ -1 (mod p).

Finally, dividing both sides by 2, we have 2(p - 3)! ≡ -1 (mod p).

Hence, we have proved that 2(p - 3)! ≡ -1 (mod p) for an odd prime p.

Learn more about Wilson's theorem

brainly.com/question/32250349

#SPJ11

The two internal bisectors and one external bisector of the angles of a triangle meet the opposite sides in three collinear points.

When we consider a triangle, each angle has an internal bisector and an external bisector.

The internal bisector of an angle divides the angle into two equal parts, while the external bisector extends outside the triangle and divides the angle into two supplementary angles.

To prove that the two internal bisectors and one external bisector of the angles of a triangle meet the opposite sides in three collinear points, we need to understand the concept of angle bisectors and their properties.

First, let's consider one of the internal bisectors. It divides the angle into two equal parts and intersects the opposite side.

Since both angles formed by the bisector are equal, the opposite sides of these angles are proportional according to the Angle Bisector Theorem.

Now, let's focus on the second internal bisector. It also divides its corresponding angle into two equal parts and intersects the opposite side. Similarly, the opposite sides of these angles are proportional.

Next, let's examine the external bisector. Unlike the internal bisectors, it extends outside the triangle. It divides the exterior angle into two supplementary angles, and its extension intersects the opposite side.

To understand why the three bisectors meet at collinear points, we observe that the opposite sides of the internal bisectors are proportional, and the opposite sides of the external bisector are also proportional to the sides of the triangle.

This implies that the three intersecting points lie on a straight line, as they satisfy the condition of collinearity.

In conclusion, the two internal bisectors and one external bisector of the angles of a triangle meet the opposite sides in three collinear points due to the proportional relationship between the opposite sides formed by these bisectors.

Learn more about angle bisectors

brainly.com/question/2478436

#SPJ11

Using mathematical strong induction, we can prove that for all n ≥ 1, 1 < an < 1/(1-a), given 0 < a < 1.

To prove the given statement using mathematical strong induction, we first establish the base case. For n = 1, we have a1 = 1 + a. Since a < 1, it follows that a1 = 1 + a < 1 + 1 = 2. Additionally, since a > 0, we have a1 = 1 + a > 1, satisfying the condition 1 < a1.

Now, we assume that for all k ≥ 1, 1 < ak < 1/(1-a) holds true. This is the induction hypothesis.

Next, we need to prove that the statement holds for n = k+1. We have a_k+1 = 1/ak + a. Since 1 < ak < 1/(1-a) from the induction hypothesis, we can establish the following inequalities:

1/ak > 1/(1/(1-a)) = 1-a

a < 1

Adding these inequalities together, we get:

1/ak + a > 1-a + a = 1

Thus, we have 1 < a_k+1.

To prove a_k+1 < 1/(1-a), we can rewrite the inequality as:

1 - a_k+1 = 1 - (1/ak + a) = (ak - 1)/(ak * (1-a))

Since 1 < ak < 1/(1-a) from the induction hypothesis, it follows that (ak - 1)/(ak * (1-a)) < 0.

Therefore, we have a_k+1 < 1/(1-a), which completes the induction step.

By mathematical strong induction, we have proven that for all n ≥ 1, 1 < an < 1/(1-a), given 0 < a < 1.

Learn more about mathematical strong induction visit

brainly.com/question/32089403

#SPJ11

Answer: 0.11 cents a message

Step-by-step explanation:

Total of texts: 40

Total cost: $4.40

4.40/40

= 0.11