anybody have an answer

The DC current gain (βdc) of the transistor is 73.

The DC current gain (βdc) of a transistor is the ratio of the collector current (IC) to the base current (IB) at DC conditions. Therefore, to determine the βdc of a transistor with IB = 50 µA and IC = 3.65 mA, we simply substitute these values into the equation:

βdc = IC / IB

βdc = 3.65 mA / 50 µA

βdc = 73

Therefore, the DC current gain (βdc) of the transistor is 73.

This result indicates that for every 1 µA of base current, the transistor can allow 73 µA of collector current to flow. A high βdc value indicates that the transistor can provide significant amplification in a circuit. In addition, the βdc value is essential in selecting the appropriate biasing resistors and determining the operating point of the transistor in amplifier circuits.

Thus, by determining the βdc value, we can gain valuable insights into the performance characteristics of a transistor and how it can be used in various circuit designs.

Therefore, The DC current gain (βdc) of the transistor is 73.

For more similar questions on transistor:

https://brainly.com/question/1426190

#SPJ11

There is a typo in the question. Where it reads 'state of' should read 'shaded'

Answer:

\(A=27.47\ mm^2\)

Step-by-step explanation:

Area of a Circle

Given a circle of radius r, its area can be calculated as follows:

\(A=\pi r^2\)

The area of the shaded region can be found by subtracting the area of the large circle minus the area of the small circle.

We already know the area of the large circle:

\(A_l=28.26\ mm^2\)

Now we calculate the area of the small circle of radius r=0.5 mm:

\(A_s=\pi\cdot 0.5^2\)

Calculating:

\(A_s=0.79\ mm^2\)

The area of the shaded region is:

\(A=A_l-A_s=28.26\ mm^2-0.79\ mm^2\)

\(\mathbf{A=27.47\ mm^2}\)

(a) The probability that the entire system works is  0.3136

(b) The probability that the component a is not working is 0.3

Probability is a scale between 0 and 1 that represents the possibility of an event happening. An event with probability 1 is guaranteed to happen, while an event with probability 0 is impossible. The number of favorable outcomes divided by the total number of potential outcomes in the sample space yields the probability of an event A, commonly denoted as P(A). The sample space, for a fair six-sided die, is the set of all potential outcomes, such as 1, 2, 3, 4, 5, and 6. The probability of rolling a 4 is 1/6. Numerous disciplines employ probability to make predictions, deduce conclusions, and make judgments in the face of uncertainty.

(a) To find the probability that the entire system works, we need to find the product of the probabilities of the individual components working.

For the components connected in series, A and B, the probability that both work is equal to the product of their individual probabilities:

P(A and B) = P(A) * P(B) = 0.7 * 0.8 = 0.56

For the components connected in series-parallel, C, D, and E, the probability that all three work is equal to the product of their individual probabilities:

P(C and D and E) = P(C) * P(D) * P(E) = 0.8 * 0.8 * 0.9 = 0.576

To find the probability of the entire system working, we need to find the product of the probability of A and B working and the probability of C, D, and E working:

P(system works) = P(A and B) * P(C and D and E) = 0.56 * 0.576 = 0.3136

(b) Given that the system works, the probability that component A is not working would be equal to 1 minus the probability that component A is working:

P(A not working | system works) = 1 - P(A working | system works) = 1 - 0.7 = 0.3

To know more about outcomes visit:

brainly.com/question/19916581

#SPJ4

The complete question is

Answer:

8 x 4 = 5 fours + 3 fours

= 20 + 12

= 32

Hope This Helps! •v•

f(x) and g(x) are not closed under subtraction because when subtracted, the result will be a polynomial, the correct option is B.

A polynomial is a mathematical equation that solely uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables. Variables are sometimes known as indeterminate in mathematics. Majorly used polynomials are binomial and trinomial.

Given f(x) and  g(x) two polynomial functions in the standard form of the polynomial,

According to Closure Property, when something is closed, the output will be the same as the input.

The polynomials f(x) and g(x) can be seen in the image.

On subtracting the two polynomials, the output will be a polynomial and so it is closed under subtraction.

Therefore, The reason why f(x) and g(x) are not closed under subtraction is that the outcome of subtraction will be a polynomial, making option B the best choice.

Learn more about Polynomials here:

https://brainly.com/question/11536910

#SPJ1

Complete question:

Answer:

488

Step-by-step explanation:

Answer:

2.03

Step-by-step explanation:

Answer:

£20

Step-by-step explanation:

1500*20= 30000

1*20=£20

The total amount Joanne paid by the end of 4 years is $40,572.43.

To calculate the total amount Joanne paid, we can use the formula for the future value of an ordinary annuity. The formula is given by:

FV = P * ((1 + r)^n - 1) / r

Where:

FV = future value

P = payment amount per period

r = interest rate per period

n = number of periods

In this case, Joanne made monthly payments of $800 for 4 years, which corresponds to 4 * 12 = 48 periods. The interest rate is 3.4% per year, compounded monthly. We need to convert the annual interest rate to a monthly interest rate, so we divide it by 12. Thus, the monthly interest rate is 3.4% / 12 = 0.2833%.

Substituting these values into the formula, we have:

FV = 800 * ((1 + 0.2833%)^48 - 1) / 0.2833%

Evaluating the expression, we find that the future value is approximately $40,572.43. Therefore, Joanne paid approximately $40,572.43 by the end of the 4 years.

To learn more about expression click here:

brainly.com/question/14083225

#SPJ11

Answer:

C.) 33.60

Step-by-step explanation:

OMP. = $56

D. = 25%

0.25 * $56 = $14

SP. = $56-$14=$42

CD. = 20% of Selling price

= 0.20 * $42 = $8.40

FSP. = $42-$8.40      = $33.60

Answer:

c

Step-by-step explanation:

4.1 The tariff for electricity consumption is R2.55 per kilowatt-hour (kWh).

4.2 The cost of electricity for 80 kWh is R204

4.3 One way of saving electricity is by ensuring energy-efficient practices such as putting off lights, electronics, and appliances when not in use and using LED or other energy-efficient light bulbs.

4.4.1 The oven uses 1.5 kilowatts of electricity per hour.

4.4.2 The amount of money left on the meter after baking for 4 hours is  R39.70.

4.2 To calculate the cost of electricity for 80 kWh, we shall use the formula:

Cost = R2,55 x number of kWh of electricity used:

Cost = R2,55 x 80

= R204

Therefore, the cost of electricity for 80 kWh is R204.

4.4.1 We calculate the kilowatts (kW) of electricity the oven uses per hour, by converting the watts to kilowatts.

1 kilowatt (kW) = 1000 watts

Oven uses 1500 watts each hour, so we convert:

1500 watts = 1500/1000 = 1.5 kilowatts (kW)

So, the oven uses 1.5 kilowatts of electricity per hour.

4.4.2 If Mary has R55,00 worth of electricity and bakes for 4 hours, we compute the cost of electricity used during baking.

Cost of electricity used for baking = Cost per kWh x number of kWh used

= R2,55 x (1.5 kW x 4 hours)

= R2,55 x 6 kWh

= R15.30

Next, we estimate the amount of money left on the meter after baking:

Amount left on meter = Initial amount - Cost of electricity used

= R55.00 - R15.30

= R39.70

Hence, Mary will have R39.70 left on the meter after baking for 4 hours.

Learn more about electricity at brainly.com/question/776932

#SPJ1

Answers:

AREA OF A CIRCLE = pi x r^2

5m circle:

when it says 5 i think it means diameter so divide by 2 for radius

5/2 = 2.5

3.14 x 2.5^2=

3.14 x 6.25=

19.625m^2

50mm circle:

50/2= 25

3.14 x 25^2=

3.14 x 625=

1962.5mm^2

40in circle:

40/2= 20

3.14 x 20^2 =

3.14 x 400=

1256in^2

7ft circle:

7/2= 3.5

3.14 x 3.5^2=

3.14 x 12.25=

38.465ft^2

21mm circle:

21/2= 10.5

3.14 x 10.5^2=

3.14 x 110.25=

346.185mm^2

70cm circle:

70/2=35

3.14 x 35^2=

314 x 1225=

3846.5cm^2

Hope that helps :)

Answer:

y = 1/2x + 8

Step-by-step explanation:

y2 - y1 / x2 - x1

9 - 10 / 2 - 4

-1 / -2

= 1/2

y = 1/2x + b

10 = 1/2(4) + b

10 = 2 + b

8 = b

The best model to fit the scatter plot will be ŷ = −1.34x + 21.5. The correct option is a.

A scatter plot is a type of graph that is used to represent the values of two variables graphically, with the resulting points indicating any association (correlation) between the data set.

A line of best fit, also known as a trend line, is a statistical (analytical) tool used in conjunction with a scatter plot to determine whether or not there is any association (correlation) between two pieces of data.

Given that the graph shows a scatter plot for a set of data. image of a scatter plot with Money Saved on the x-axis and Money Earned on the y-axis, with points (1,20),(3,19),(5,15),(7,11),(9,9), and (11,5).

The model of the equation best fit for the plot is,

ŷ = −1.34x + 21.5

At point (1,20),

ŷ = −1.34x + 21.5

20 = ( -1.34 x 1 ) + 21.5

20 ≈ 20.15

At point (3,19),

ŷ = −1.34x + 21.5

19 = (-1.34 x 3) + 21.5

19 ≈17.45

At point (5,15),

ŷ = −1.34x + 21.5

15 = (-1.34 x 5 ) + 21.5

15 ≈ 14.75

The model ŷ = −1.34x + 21.5  is giving the best estimation.

To know more about scatter plots follow

https://brainly.com/question/6592115

#SPJ1

The expression for a(t) is 8(1-t)/(1+t)² and A(2) = -8/9.

An expression is a combination of numbers, variables, and operations. Expressions can be used to represent quantities, relationships, and functions. While there are different types of expression such as arithmetic expression, algebraic expression and function, this as an algebraic expression.

To determine the expression that represents a(t); we have to factor the expression 8t/(1+t²).

8t/(1+t²) = 8t/(1+t)(1-t)

Dividing by 1 - t

a(t) = 8t/(1+t)

Simplifying further;

a(t) = 8(1-t)/(1+t)²

To solve for A(2), we need to plug t = 2 into the expression;

A(2) = 8(1-2)/(1+2)²

A(2) = -8/9

Learn more on expression here;

https://brainly.com/question/28036586

#SPJ1

step 1

Find the equation of function A

Find the slope

take the points

(1,7) and (3,11)

m=(11-7)/(3-1)

m=4/2

m=2

Find the equation in point slope form

y-y1=m(x-x1)

we have

m=2

(x1,y1)=(1,7)

substitute

y-7=2(x-1)

Find the y-intercept

REmember that te form

y-y1=m(x-x

The function f(x) = (3 - x)/(x² - 4) is undefined when the denominator x² - 4 equals zero. Solving for x gives x = 2 and x = -2.

The function f(x) = (3 - x)/(x² - 4) will be undefined when the denominator of the expression, which is x² - 4, equals zero, since division by zero is undefined.

So, to find the values that would make the expression undefined, we can set the denominator equal to zero and solve for x

x² - 4 = 0

Factor the expression:

(x - 2)(x + 2) = 0

Set each factor equal to zero

x - 2 = 0 or x + 2 = 0

Solve for x:

x = 2 or x = -2

Therefore, the values that would make f(x) undefined are x = 2 and x = -2, since they would cause the denominator to be zero.

To know more about Function:

https://brainly.com/question/30974488

#SPJ4

Answer: x= 10

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

x=10

Answer:

y>= -2

Step-by-step explanation:

-5y=< 2+8

-5=< 10

y>= -2

(correct me if im wrong plz)

The Michelle equation and Myra equation both are the same thus both are equivalent.

A straight line on the coordinate plane is represented by a linear function.

A linear function always has the same and constant slope.

The formula for a linear function is f(x) = ax + b, where a and b are real values.

As per the given Michelle equation,

G(t) = 15(t - 3)

Here 15 represents the selling price of one t-shirt while t is the number of t-shirts

As per the given Myra equation,

G(t) = 15t  45

Here, 45 is the cost of the t-shirts that Mayra has given and 15 is still the cost of one t-shirt

G(t) = 15(t - 3) = Michelle equation

Hence "The Michelle equation and Myra equation both are the same thus both are equivalent".

For more about the linear function,

brainly.com/question/21107621

#SPJ1

Answer:

it is possible because the fact provided says X is greater than or equal to -7.

the word 'equal' means -7 could be a possible solution

Answer:

Please look at the picture attached to see the long division.

a. 32 remainder 3

b. 75 remainder 7

Step-by-step explanation:

Answer:

Hey! The answer to your question will be below.

Step-by-step explanation:

Part A would be 32 R 3

And Part B would be 75 R 7

If you want to see how I got this by long division, below I attached a picture which shows how you would do the long division!

Hope this helps! :)

⭐️Have a wonderful day!⭐️

The value of surd expression x²+ xy + y² by means of simplification of surds is 3.

The solution to the surd  is derived as follows:

x = √3-√2 /√3+√2 and

y = √3+√2 /√3-√2

The value of x²+ xy + y² is calculated as follows:

x² = (√3-√2 /√3+√2)²

x² = 5 - 2√6 / 5 + 2√6

y² = (√3+√2 /√3-√2)²

y² =  5 + 2√6 / 5 - 2√6

xy = (√3-√2 /√3+√2) (√3+√2 /√3-√2)

xy = 1

x²+ xy + y² = (5 - 2√6 / 5 + 2√6) + (5 + 2√6 / 5 - 2√6) + 1

x²+ xy + y² = 147/49

x²+ xy + y² = 3

Learn more about surds at: https://brainly.com/question/840021

#SPJ1

Since you can go through the non-zero rows from top to bottom and gradually come to the conclusion that the entry where they are non-zero while all the rows below them are zero forces their coefficient in a linear combination yielding a zero row to be zero, the non-zero rows are linearly independent.

Since there are no non-zero rows in a zero matrix and only one linear combination may generate a zero vector (since there are no coefficients), the limitation to non-zero matrices is unnecessary. Additionally, the empty set is linearly independent.

If you write a collection of vectors as the columns of the matrix A and solve Ax = 0, you can tell if the vectors are linearly independent. If any non-zero solutions exist

Learn more about linear independence here: https://brainly.com/question/10725000

#SPJ4

The equation of the parabola in vertex form is y = (-1/12)(x + 3)^2 + 2, which opens downwards since the leading coefficient is negative.

The equation of the given parabola in vertex form is y = a(x + 3)^2 + 2, where a is a constant that depends on whether the parabola opens up or down.

To determine the value of a, we can use the fact that the parabola passes through (-7, 2/3). Substituting these values into the equation, we get:

2/3 = a(-7 + 3)^2 + 2

2/3 = 16a + 2

16a = -4/3

a = -1/12

Therefore, the equation of the parabola in vertex form is

y = (-1/12)(x + 3)^2 + 2.

The vertex form of a parabola is y = a(x - h)^2 + k, where (h, k) is the vertex of the parabola. In this case, we are given that the vertex is (-3, 2), so we can write the equation as y = a(x + 3)^2 + 2.

To find the value of a, we use the fact that the parabola passes through (-7, 2/3). Substituting these values into the equation, we get 2/3 = a(-7 + 3)^2 + 2. Simplifying this equation, we get 2/3 = 16a + 2, which we can solve for a to get a = -1/12.

Therefore, the final equation of the parabola in vertex form is y = (-1/12)(x + 3)^2 + 2, which opens downwards since the leading coefficient is negative.

Learn more about parabola:

brainly.com/question/31142122

#SPJ11

Answer:

Monomial

Step-by-step explanation:

A polynomial has terms in their equation.

When it is a trinomial, it usually follows the pattern such as x^2+2x+1.

When it is a binomial, it usually is something like x+2

...And finally, when it is a monomial, it can be anything that has just one term. So let's say 4x^8883293483.

The polynomial 5m^10 classifies under a monomial since it only has one term

The number of ways to select 21 ice cream cones from 8 flavors is 0.

To find the number of ways to select 21 ice cream cones from 8 different flavors, we can use the concept of combinations.

We want to choose 21 cones out of 8 flavors, where order does not matter. This is a combination problem.

The formula for combinations is given by:

C(n, r) = n! / (r!(n - r)!)

where n is the total number of items to choose from, and r is the number of items we want to select.

In this case, we have n = 8 (number of flavors) and r = 21 (number of cones to select).

Using the combination formula, we can calculate the number of ways to select 21 ice cream cones from 8 flavors:

C(8, 21) = 8! / (21!(8 - 21)!)

However, since 21 is greater than 8, the combination is not possible. Selecting 21 cones from only 8 flavors is not feasible.

Know more about combination here:

https://brainly.com/question/31596715

#SPJ11

The concept of permutations is commonly used in statistics to measure the probability of observing a certain result or outcome when rearranging a set of objects. In this case, you are aiming to generate 10,000 permutations and test a specific alternative hypothesis.

The p-value is a statistical measure that indicates the likelihood of obtaining the observed result (or a more extreme one) assuming that the null hypothesis is true. It ranges from 0 to 1, where a smaller p-value suggests stronger evidence against the null hypothesis.

Without more information about the specific tool or hypothesis you are using, I cannot provide an exact answer to your question. However, once you have generated the permutations and selected the alternative hypothesis, the p-value should be displayed in the output or result section of the tool. It may also be helpful to consult a statistical textbook or resource to understand the interpretation and significance of the p-value in your particular analysis.

1. Select the number of permutations to be equal to 10,000.
2. Click on "Generate Permutations."
3. Ensure that the correct alternative hypothesis is selected (this will depend on your specific test; it can be one-sided or two-sided).
4. Observe the results of your permutation test, which should include the p-value.

Unfortunately, I cannot provide you with the p-value without knowing the specific data and hypothesis you are working with. Please follow the steps above using your software or tool, and you should obtain the p-value you are looking for.

Learn more about Permutations here : brainly.com/question/30649574

#SPJ11

We have to find the area under the graph but since we are not given the graph ,So let's learn how it is done. To estimate the area under the graph of function f from x, you can use rectangles. Here's how you can do it:

Step 1: Divide the interval [a, b] into six equal subintervals.
Step 2: Calculate the width of each rectangle by dividing the total width of the interval [a, b] by the number of rectangles (in this case, 6).
Step 3: For each subinterval, find the value of the function f at the right endpoint of the subinterval.
Step 4: Multiply the width of the rectangle by the value of the function at the right endpoint to find the area of each rectangle.
Step 5: Add up the areas of all six rectangles to estimate the total area under the graph of f from x.

Let's learn more about interval:

https://brainly.com/question/479532

#SPJ11