Someone who isn't a bot, please answer this.


Seriously, I got two people who gave me the same link saying the answer was there

Someone Who Isn't A Bot, Please Answer This.Seriously, I Got Two People Who Gave Me The Same Link Saying

Answers

Answer 1

Answer:

answer is here

Step-by-step explanation:

https://www.mathpapa.com/algebra-calculator.html


Related Questions

Which statement is true about Angle C P B?

Lines C D and A B intersect at point P.
It is supplementary to Angle A P C.
It is complementary to Angle A P C.
It is congruent to Angle A P C.
It is linear to Angle A P D.

Answers

Answer:

A. It is supplementary to angle APC

Step-by-step explanation:

Vocabulary:

Supplementary Angle - Two angles that when added together equal 180 degrees.

If we look at the graph provided which is attached below we can see that if we add angles CPB and APC it forms a straight line (a straight line always = 180 degrees) Making the answer A. It is supplementary to angle APC

Answer:

Step-by-step explanation:

Which statement is true about Angle C P B?

It is supplementary to Angle A P C.

It is complementary to Angle A P C.

It is congruent to Angle A P C.

It is linear to Angle A P D.

Explain the steps taken to write an equation from a description given in words.

Answers

Answer:

Step-by-step explanation:

10+10+20

5+5=10

6+4=10

10+10=20

Answer:

the person above me is incorrect

To write an equation from a description given in words, you first have to identify and define the variable. Then you would identify the coefficient, constants, and operations between the terms. Finally, you can translate to write the equation.

Morgan purchased $30.46 worth of groceries. She paid the cashier with
a $50 bill. How much change should she receive?

marking brainliest
if right
+
how to get

Answers

Answer: 19.54

explanation:

50.00

-

30.46

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

19.54

Answer: 19.54$

Step-by-step explanation: 50.00

                                            -30.46

                                            = 19.54

Consider the equation: −34=x^2−14x+10 1) Rewrite the equation by completing the square. 2) What are the solutions to the equation?

Answers

Answer:

1) x^2 - 14x + 44 = 0

(x^2 - 14x + 49) - 5 = 0

(x-7)^2 - 5 = 0

2)Assuming no complex number x...

(x-7)^2 = 5

x-7 = 5

x-7 = -5

x= 12, x=2

==============

Please give brainliest, I really want to rank up, thank you!

The answers to both the subparts of the equations are shown:

(A) Re-written equation by completing the square: (x-7)² - 5 = 0(B) Solutions of the equation: x = 12, x = 2

What are equations?Algebraically speaking, an equation is a statement that shows the equality of two mathematical expressions. For instance, the two equations 3x + 5 and 14, which are separated by the 'equal' sign, make up the equation 3x + 5 = 14.

So, the equation is:

−34 = x² −14x+10

(A) Rewrite the equation by completing the square:

−34 = x² −14x+10x² - 14x + 44 = 0(x² - 14x + 49) - 5 = 0(x-7)² - 5 = 0

(B) The solutions of the equation:

(x-7)² = 5x-7 = 5x-7 = -5x= 12, x=2

Therefore, the answers to both the subparts of the equations are shown:

(A) Re-written equation by completing the square: (x-7)² - 5 = 0(B) Solutions of the equation: x = 12, x = 2

Know more about equations here:

https://brainly.com/question/28937794

#SPJ2








10. Identify the property illustrated by the following equations a. 3+ [6+(-3)] = 3 +(-3+6) b. [3+(-3)] + 6 = 0 +6

Answers

The property illustrated by the given equations is the commutative property of addition.

The commutative property of addition states that changing the order of the numbers being added does not affect the sum. In equation (a), we can see that the numbers inside the parentheses are being added first, and then the sum is added to the number outside the parentheses. Similarly, in equation (b), the numbers inside the parentheses are added first, and then the sum is added to the number outside the parentheses.

In both cases, regardless of the order in which the numbers are added, the final sum remains the same. This demonstrates the commutative property of addition. The property holds true for any real numbers, and it allows us to rearrange the terms without changing the result.

Learn more about commutative here:

https://brainly.com/question/28747013

#SPJ11

jack has a square flower bed in his garden with perimeter 120 m, he wants to deconstruct this flower bed and turn it into a triangular flower bed with maximum area. if he wants the triangular flower bed to have the same perimeter as the square flower bed, then what would be the area of such a triangular flower bed(rounded off to the nearest integer)?

Answers

To find the maximum area for the triangular flower bed with the same perimeter as the square flower bed, we can use the concept of an equilateral triangle.

Let's denote the side length of the square flower bed as 's'. Since the perimeter of the square is 120 m, each side of the square will be s = 120 m / 4 = 30 m.

Now, for the triangular flower bed to have the same perimeter as the square flower bed, it should also have a perimeter of 120 m. In an equilateral triangle, all three sides are equal in length.

Let's denote the side length of the equilateral triangle as 't'. Since the perimeter of the equilateral triangle is 120 m, each side of the triangle will be t = 120 m / 3 = 40 m.

The formula for the area of an equilateral triangle is given by:

Area = (sqrt(3) / 4) * t^2

Substituting the value of t, we get:

Area = (sqrt(3) / 4) * (40 m)^2

Area ≈ 346.41 m^2

Rounded off to the nearest integer, the area of the triangular flower bed would be 346 m^2.

Please answer I will make brainlest:)

Answers

Answer:

(3,-4)

Step-by-step explanation:


Who can describe and correct the error in finding volume of the cone

Answers

6 is the diameter not the radius

No período: \"Quando analisaram o desempenho da economia brasileira, os empresários afirmaram sua satisfação\". As orações presentes são, respectivamente

a) principal, coordenada.

b) subordinada, subordinada.

c) subordinada, principal.

d) subordinada, coordenada.

Answers

Answer:

a

Step-by-step explanation:

the answer would be a

Given a A PQR with vertices P (2, 3), Q 1-3, 7) and R(-1, -3): The equation of median PM is :

Answers

The equation of the median PM in triangle PQR with vertices P(2, 3), Q(-3, 7), and R(-1, -3) is y = (1/3)x + 7/3.

To find the midpoint of QR, we calculate the average of the x-coordinates and the average of the y-coordinates. The x-coordinate of point M is (-3 + (-1))/2 = -2/2 = -1, and the y-coordinate of point M is (7 + (-3))/2 = 4/2 = 2.

Therefore, the coordinates of point M are (-1, 2). Now, we have two points, P (2, 3) and M (-1, 2), and we can find the equation of the line passing through these points using the point-slope form.

The slope of the line passing through P and M is (2 - 3)/(-1 - 2) = -1/-3 = 1/3. Using the point-slope form, we have:

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

Expanding and rearranging the equation, we get:

y = (1/3)x + 7/3

Therefore, the equation of the median PM in triangle PQR is y = (1/3)x + 7/3.

To learn more about the Point-slope form, visit:

https://brainly.com/question/26704343

#SPJ11

4. Find the circumference of a circle with a
diameter of 20 centimeters.

Answers

Answer:

circumference = π(diameter) = 3.14(20) =62.8 cm

Step-by-step explanation:


Which of the following Divisibility relationship is True and
which is False?


a) 13|78


b) -6 | 24


c) 11 | -33


d) 23 | 96


e) 5 |126

Answers

The True statements are: b) -6 | 24, c) 11 | -33, and e) 5 | 126. The False statements are: a) 13|78 and d) 23 | 96.

The divisibility relationships in question can be evaluated as follows:

a) 13|78 - This statement is False. The vertical line symbol "|" denotes divisibility, and in this case, it means that 13 divides evenly into 78. However, 13 does not divide evenly into 78 since 78 divided by 13 results in a remainder of 0. Therefore, the statement is false.

b) -6 | 24 - This statement is True. The negative sign in front of the 6 indicates a negative number. The vertical line symbol "|" signifies divisibility, so -6 divides evenly into 24. When 24 is divided by -6, the result is -4, with no remainder. Hence, the statement is true.

c) 11 | -33 - This statement is True. Similar to the previous example, the negative sign in front of the 33 indicates a negative number. The vertical line symbol "|" represents divisibility, so 11 divides evenly into -33. When -33 is divided by 11, the result is -3, with no remainder. Therefore, the statement is true.

d) 23 | 96 - This statement is False. Again, the vertical line symbol "|" indicates divisibility, and in this case, it means that 23 divides evenly into 96. However, 23 does not divide evenly into 96, as 96 divided by 23 leaves a remainder of 4. Therefore, the statement is false.

e) 5 | 126 - This statement is True. The vertical line symbol "|" represents divisibility, so 5 divides evenly into 126. When 126 is divided by 5, the result is 25, with no remainder. Hence, the statement is true.

To summarize, the True statements are: b) -6 | 24, c) 11 | -33, and e) 5 | 126. The False statements are: a) 13|78 and d) 23 | 96.

Learn more about statements here

https://brainly.com/question/1616527

#SPJ11

I need help with (G)

Answers

Answer:

[tex]2^{5}[/tex]

Step-by-step explanation:

find the zeros of the following equation using the quadratic formula y = x2 + 13x – 48​

Answers

x2+13x-48
(x-3)(x+16)
X=3, X=-16
3 and -16 are the Zeros

Select all the true sentences!!!

Answers

Answer:

only the 1st is true

Step-by-step explanation:

the rest are wronf

First is correct

...............

My brothers hw is 3x +(-6 + 3y)

Answers

Answer:

3x + 3y - 6

Step-by-step explanation:

3x - 6 + 3y =

3x + 3y - 6

The answer is y = 2 - x the work is shown in the photo

P(A)=0.30 P(B)=0.58 P(A and B)=0.25 Find P(BIA). Round your answer to two decimal places.

Answers

The conditional probability P(B|A) is approximately 0.83.

To find the conditional probability P(B|A), we can use the formula:

P(B|A) = P(A and B) / P(A)

Given that P(A and B) = 0.25 and P(A) = 0.30, we can substitute these values into the formula:

P(B|A) = 0.25 / 0.30

Performing the calculation:

P(B|A) = 0.8333...

Rounding the answer to two decimal places:

P(B|A) ≈ 0.83

Therefore, P(B|A) is approximately 0.83.

Visit to know more about Probability:-

brainly.com/question/25870256

#SPJ11

What is the standard deviation for a portfolio that has $3,500 invested in a risk-free asset with 5 percent rate of return, and $6,500 invested in a risky asset with a 15 percent rate of return and a 22 percent standard deviation?

Answers

The standard deviation for the portfolio is 7.65%. This value is calculated by considering the weights and standard deviations of the assets in the portfolio.

To calculate the standard deviation of a portfolio, we need to consider the weights and the standard deviation of each asset in the portfolio. In this case, we have $3,500 invested in a risk-free asset and $6,500 invested in a risky asset.

First, let's calculate the standard deviation of the risky asset:

Standard Deviation = 22%

Next, we need to calculate the weighted average of the standard deviations of the assets in the portfolio:

Weighted Standard Deviation = (Weight of Risky Asset * Standard Deviation of Risky Asset)

Weighted Standard Deviation = (0.65 * 22%)

Now, we can calculate the standard deviation of the portfolio using the weighted standard deviation:

Portfolio Standard Deviation = [tex]\sqrt{(Weighted Standard Deviation^2)}[/tex]

= [tex]\sqrt{(0.65 * 22\%)^2}[/tex] = [tex]\sqrt{(0.65^2 * (22\%)^2}[/tex] = [tex]\sqrt{(0.4225 * 0.484)}[/tex]  = [tex]\sqrt{0.204}[/tex]

Portfolio Standard Deviation = 0.452 = 7.65%

Therefore, the standard deviation for the portfolio is approximately 7.65%.

To learn more about Standard deviation, visit:

https://brainly.com/question/22920224

#SPJ11

What is the greatest common factor of 12 and 30?

A 2
B 3
C 6
D 12

Answers

Answer:

6 is the answer

Step-by-step explanation:

6

Answer:

C-  6

Step-by-step explanation:

12=

1,2,3,4,6,12

30=

1,2,3,5,6,10,15,30

hope this helps :) also, brainliest?? :)


Given Galois field GF(2^4) with modulus IP= x^4+x^3+1: (4) How
many generators do the multiplicative group have? (5) List all the
generators of the multiplicative group.

Answers

In Galois field GF(2^4) with modulus IP = x^4 + x^3 + 1, there are eight generators in the multiplicative group, namely {x, x^3, x^5, x^6, x^7, x^9, x^11, x^12}, which have multiplicative orders equal to the order of the group (15) and generate all non-zero elements in the field.

To determine the generators of the multiplicative group in Galois field GF(2^4) with modulus IP = x^4 + x^3 + 1, we need to find elements that have multiplicative orders equal to the order of the group, which is 15.

The multiplicative group in a Galois field consists of all the non-zero elements. In this case, the elements of the field are polynomials of degree 3 or less with coefficients in GF(2) (the field with two elements, 0 and 1).

To find the generators, we can start by selecting an element from the field and compute its powers until we find an element whose power equals 1. The smallest power that gives 1 is the order of the element.

We can start with x, which represents the polynomial x^1. We compute its powers modulo the modulus IP:

x^2 = x * x = x^1 * x^1 = x^1

x^3 = x * x^2 = x^1 * x^1 = x^1

x^4 = x * x^3 = x^1 * x^1 = x^1

Since x^4 = x^1, the order of x is 4, which is not equal to the order of the multiplicative group (15). Therefore, x is not a generator.

We continue this process with other elements until we find generators. Let's try x^2:

(x^2)^2 = x^4 = x^1

(x^2)^3 = x^6 = x^2

(x^2)^4 = x^8 = x^4 = x^1

Since (x^2)^4 = x^1, the order of x^2 is 4, which is not equal to 15. Therefore, x^2 is not a generator.

We repeat this process with other elements until we find an element whose order is 15. Let's try x^3:

(x^3)^2 = x^6 = x^2

(x^3)^3 = x^9 = x^3

(x^3)^4 = x^12 = x^8 = x^4 = x^1

Since (x^3)^4 = x^1, the order of x^3 is 4, which is not equal to 15. Therefore, x^3 is not a generator.

We continue this process with x^4, x^5, and so on until we find a generator. After checking all possible elements, we find the following generators of the multiplicative group in GF(2^4) with modulus IP: {x, x^3, x^5, x^6, x^7, x^9, x^11, x^12}.

These eight elements have multiplicative orders equal to 15 and generate all the non-zero elements in the field under multiplication.

To learn more about Galois field visit : https://brainly.in/question/4330169

#SPJ11

Solve the inequality.
2x-5<9
The solution is:

Answers

Answer:

x < 7

Step-by-step explanation:

Given

2x - 5 < 9 ( add 5 to both sides )

2x < 14 ( divide both sides by 2 )

x < 7

Help me please I give points thank you

NO FAKE ANSWER PLS

Answers

Answer:it is #4

7:4

so 7 suv and 4 trucks

The answer would be the Third option

Identify the zero(s) of this function (Desmos)

Answers

Answer:

x=2, -6

Step-by-step explanation:

[tex]3x^{2} +12x-36=0[/tex]

[tex]x^{2} +4x-12=0[/tex]     (Divided by 3)

[tex](x-2)(x+6)=0\\x_{1} =2, x_{2} =-6[/tex]

uppose that 1 out of 50 cards in a scratchand-win promotion gives a prize. a) What is the probability of winning on your fourth try? b) What is the probability of winning within your first four tries? c) What is the expected number of cards you would have to try before winning

Answers

(A) The probability of not winning on the first three tries and winning on the fourth try is 0.000196. (B) The probability of winning within the first four tries is 0.0392 or 3.92%. (C) The expected number of cards you would have to try before winning is 50.

(A) The probability of winning on the fourth try can be calculated using the concept of independent events. Since the probability of winning on any single try is 1/50, the probability of not winning on any single try is 49/50.

The probability of not winning on the first three tries and winning on the fourth try

= (49/50) × (49/50) × (49/50) × (1/50)

= 0.000196

or 0.0196%.

(B) The probability of winning within the first four tries can be calculated by considering the complement event, which is the event of not winning in all four tries.

The probability of not winning on any single try is 49/50, so the probability of not winning in all four tries

= (49/50) * (49/50) * (49/50) * (49/50)

= 0.9608

or 96.08%.

Therefore, the probability of winning within the first four tries

=  1 - 0.9608
= 0.0392

or 3.92%.

(C) The expected number of cards you would have to try before winning can be determined using the concept of expected value. The probability of winning on any single try is 1/50.

Therefore, the expected number of cards you would have to try before winning is the reciprocal of the probability of winning on a single try, which is 50. Therefore, the expected number of cards you would have to try before winning is 50.

Learn more about Probability: brainly.com/question/31828911

#SPJ11

If cos x = -√3/2
in which quadrants could a.
I and IV, only
b.
II and IV, only
c.
II and III, only
d.
I and III, only

Answers

Answer:

c

Step-by-step explanation:

What is the range of the function f(x) = -4|x + 1| − 5?
A. (-∞, -5]
B. [-5, ∞)
C. [-4, ∞)
D. (-∞, -4]

Answers

Answer:

answer is A

Step-by-step explanation:

hope that helps

The range of the function f(x) = -4|x + 1| − 5 is (-∞, -5). The correct option is A.

What are a domain and range?

The domain of a function is the set of values that can be plugged into it. This set contains the x values in a function like f. (x). A function's range is the set of values that the function can take. This is the set of values that the function returns after we enter an x value.

The given function is f(x) = -4|x + 1| − 5. Plot the function on the graph and it is observed that the range of the function varies from -∞ tp 5.

The graph of the function is attached with the answer below. The absolute function has the vertex at (-1,-5).

Therefore, the range of the function f(x) = -4|x + 1| − 5 is (-∞, -5). The correct option is A.

To know more about domain and range follow

https://brainly.com/question/1942755

#SPJ2

Factor the expression: 5x^2 +12x+4
can anybody help?

Answers

Answer:

[tex](x + 2)(5x + 2)[/tex]

Step-by-step explanation:

What we would normally do when factoring a polynomial is find the greatest factor, but in this case, there is none. What we do then is multiply the coefficient of the first term by the last term.

So in this case, that expression would be...

[tex]5 * 4 = 20[/tex]

Then, we have to find two factors of 20 that, when added together, equal the second term's coefficient (12).

These factors would be 2 and 10.

[tex]2 * 10 = 20\\\\2 + 10 = 12[/tex]

We then replace the second term in the polynomial with [tex]10x + 2x[/tex]. This ends up looking like this:

[tex]5x^2 +10x + 2x +4[/tex]

Keep in mind that this did not change the value of the polynomial, as 10x + 2x still equals 12x.

This new expression lets us use a technique called group factoring. To start group factoring, we need to take out the greatest common factor (GCF) of the first two terms. That ends up looking like this:

[tex]5x(x + 2)[/tex]

Then, we do the same thing with the last two terms.

[tex]2(x + 2)[/tex]

We know we're on the right track at this point, because the expressions inside the parenthesis in both GCFs are the same.

The last step is combining the terms on the outside of the parenthesis, and multiplying it with what's inside the parenthesis. The final answer looks like this.

[tex](x + 2)(5x + 2)[/tex]

PLEASE HELP!!!!!

Find the volume and surface area of the composite figure. Give your answer in terms of π.

Answer Options
V ≈ 661.3π cm3; S = 264π cm2
V = 328π cm3; S ≈ 1045.3π cm2
V ≈ 1045.3π cm3; S = 328π cm2
V = 400π cm3; S ≈ 661.3π cm2

Answers

Answer:

V ≈ 661.3π cm3; S = 264π cm2

Step-by-step explanation:

Write in terms of i
Simplify your answer as much as possible.
square root of -48

Answers

The square root of -48 is 2 because 2x2x2x2x2x2x is not -48

£864.00 to be accrued
after £800 is invested with
2% pa simple interest.

Answers

Answer: 4 years

Step-by-step explanation:

Your question isn't complete but I believe that you want to calculate the number of years. This will be:

Simple Interest = PRT/100

where,

Interest = 864 - 800 = 64

Principal = 800

Rate = 2%

Therefore, 64 = 800 × 2 × T /100

Cross multiply

64 × 100 = 1600T

6400 = 1600T

T = 6400/1600

T = 4

Therefore, time will be 4 years

Other Questions
Roots do all of the following, except ______.A. absorb waterB. anchor plants in the groundC. photosynthesis The Food Service Manager continually blames the new check system for mis-categorizing the items purchased, when in fact she did not fully engage in the mandatory training on setting up the new system and mis-categorized the items in the data base. Which defense mechanism is this? O withdrawal O repression O rationalization O substitution This is a question about Football. After 4 downs have passed and they have failed to make it over the 10 yards required the ball will be turned over to the ___________.1. Referr2. winning team 3. defensive team4. jump ball Consider the triangles below.2 right triangles. Both triangles have side lengths of 5.5 and 7.8. The hypotenuses are blank.Imagine using these triangles to construct a figure. What figure would you create? Please answer the followingplease explain how you got your answer Charles, Hal, and Mercedes insist on traveling on spring ice because of their success thus far. This is an example of lacking _____.A)braveryB)calculationC)humilityD)hope Isaiah is a Financial Quantitative Analyst for a major stock investment company. What does Isaiah do on a daily basis as a part of his job?He researches, analyzes, and summarizes information about fraud.He assesses financial situations using mathematical models.He analyzes tax information using mathematical formulas.He manages the paperwork for buying and selling securities. PLS HELP ME IF YOU CAN The Netherlands played a role in colonizing North America. Which number represents the area CLOSEST to the area they colonized? Id.k if this helps a lot..but i need help Explanation on how to solve these problems (not answers to the problems). The senate is debating whether to continue funding a community college program that prepares students for exciting and well-paying careers. One senator gets up and argues that millions of dollars have been spent so far on the project and it would all be wasted if the project doesn't receive more funding. a. Using what you know about civil discourse and about economics so far, inform the senator about the flaw in his/her argument. b. What should the decision be based on? c. Would the decision-making process used by economists change if the program being funded was additional bombers? Explain. A group of neighbors is holding an end of summer block party. They buy p packs of hot dogs, with 8 hot dogs in each pack. All together, they have 56 hot dogs for the party. Write an equation to describe this situation. How many packs of hot dogs did the neighbors buy? A real estate major collected information on some recent local home sales. The first 6 lines of the database appear in the accompanying table. The columns correspond to the house identification number, the community name, the zip code, the number of acres of the property, the year the house was built, the market value, and the size of the living area (in square feet). Complete parts a and b below.Yr Built FullMarket Value SFLA 12859 Neighborhood Mail_Zip Acre:s 413400536 Greenfield Manor 412800344 Dublin 412800352 Arcady 12859 12801 12309 10598 10562 12859 0.09 1.69 0.33 2.29 9.14 1962 1961 1993 1964 1955 1997 100400 132505 140000 67100 190000 126900 960 909 1620 900 1223 1056 4128001474 Fort Amherst 4128001552 Granite Springs 413400322 Ormsbeea) For each variable, would you describe it as primarily categorical, or quantitative? If quantitative, what are the units? If categorical, is it ordinal or simply nominal?Describe the variable House_ID. Choose the correct answer below.A. The variable House_ID is categorical and ordinal.B. The variable House_ID is categorical and nominal.C. The variable House_ID is an identifier variable.D. The variable House_ID is quantitative, with units house number.Describe the variable Neighborhood. Choose the correct answer below.A. The variable Neighborhood is categorical and ordinal.B. The variable Neighborhood is quantitative, with units neighborhood name.C. The variable Neighborhood is categorical and nominal.D. The variable Neighborhood is quantitative, with units number of neighborhoods Genetic recombination would be most closely associated with which process in disease-causing microorganisms? A.binary fission in fungiB.sexual reproduction in fungiC.spore formation in bacteriaD.viral replication in host cells Consider the function f(x) whose second derivative is f''(x)=9x+5sin(x). If f(0)=3 and f'(0)=2, what is f(3)?Please show all your steps and explain why. what is a grid with 4 quadrants and 2 axes? In your answers below, for the variable A type the word lambda, for y type the word gamma, otherwise treat these as you would any other variable We will solve the heat equation U-60 *1. Find the value of the discriminant.3x2 - 6x + 3 = 0O 290 -18OOO 23 PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!Silver and gold are common medals used in making jewelry. Why do you think these metals are used?A. they are ductile and malleable.B. they have luster.C. they cannot be dissolved in water.D. All of above