Compare and contrast the solubility of acids, bases and salts

She has to work more harder or she needs to cut her expenses are the only two choices for her.

The price one must pay to acquire anything is referred to as an expense.

An expense is a recurring expense, such as the salary of an employee or the rent for a retail location, whereas a cost normally refers to the amount paid to purchase an item.

She has two options: she either work harder to earn more money or she may spend less money. Increasing the value being added (income) or decreasing the value being subtracted (expenses) will make the difference less negative/positive because income - expense is negative.

To learn more about expense visit the link:

https://brainly.com/question/25530648

#SPJ4

Recurring decimal: 0.5

The recurring decimal 0.5 can be expressed as a rational number, which is 1/2.

Recurring decimal: 10.3 The recurring decimal 10.3 can be expressed as a rational number, which is 103/10.

Recurring decimal: 10.34

The recurring decimal 10.34 can be expressed as a rational number, which is 1034/100.

Recurring decimal: 0.5

A recurring decimal is a decimal representation of a fraction where one or more digits repeat indefinitely. In the case of 0.5, it can be rewritten as 1/2. This is because 0.5 is equivalent to the fraction 1/2, where the numerator is 1 and the denominator is 2. Therefore, the rational representation of 0.5 is 1/2.

Recurring decimal: 10.3

Explanation: To convert 10.3 to a rational number, we can consider it as a mixed fraction. The integer part is 10, and the decimal part is 0.3. Since 0.3 is equivalent to the fraction 3/10, we can combine it with the integer part to get 10 3/10. This can be further simplified to an improper fraction as 103/10. Therefore, the rational representation of 10.3 is 103/10.

Recurring decimal: 10.34

Explanation: Similar to the previous case, we can consider 10.34 as a mixed fraction. The integer part is 10, and the decimal part is 0.34. The fraction equivalent of 0.34 is 34/100. Combining the integer part and the fraction, we get 10 34/100. This can be simplified to 10 17/50. Finally, we can express it as an improper fraction, which is 1034/100. Therefore, the rational representation of 10.34 is 1034/100.

Learn more about rational number here:-

https://brainly.com/question/29118743

#SPJ11

The probability distribution used would be the negative binomial distribution with parameters p (either P(B) or P(G)) and r = 3. The PMF of X would then be calculated using the negative binomial distribution formula, taking into account the number of trials (number of children) until three children of the same gender are achieved.

The probability distribution that would be used to determine the probability mass function (PMF) of X, where X represents the number of children until the family has three children of the same gender, is the negative binomial distribution.

The negative binomial distribution models the number of trials required until a specified number of successes (in this case, three children of the same gender) are achieved. It is defined by two parameters: the probability of success (p) and the number of successes (r).

In this scenario, let's assume that the probability of having a boy is denoted as P(B) and the probability of having a girl is denoted as P(G). Since the family is aiming for three children of the same gender, the probability of success (p) in each trial can be represented as either P(B) or P(G), depending on which gender the family is targeting.

Therefore, the probability distribution used would be the negative binomial distribution with parameters p (either P(B) or P(G)) and r = 3. The PMF of X would then be calculated using the negative binomial distribution formula, taking into account the number of trials (number of children) until three children of the same gender are achieved.

To know more about probability distribution click the link given below.

https://brainly.com/question/29353128

#SPJ4

The lower limit of the confidence interval is 51%, which is above 55%, so the Republican should expect to win.

What does confidence interval mean?

Your estimate's mean plus and minus the range of that estimate's fluctuation is called a confidence interval.

                       If you repeat your test, you can expect your estimate to fall between these numbers with a reasonable degree of certainty. In statistics, confidence is another word for probability.

A confidence interval of proportions has two bounds, a lower bound and an upper bound.

These bounds depend on the sample proportion and the margin of error.

The lower bound is the sample proportion subtracted by the margin of error.

The upper bound is the margin of error added to the sample proportion.

In this problem, we have that:

Sample proportion 53%

Margin of error 2%

53 - 2 = 51%

53 + 2 = 55%

Hence, the lower limit of the confidence interval is 51%, which is above 55%, so the Republican should expect to win.

Learn more about confidence interval

brainly.com/question/24131141

#SPJ4

Answer:

l = 40 m

Step-by-step explanation:

The formula for area of a rectangle is

A = lw, where

Step 1:  Since we're given the area and width, we plug in these two values for A and w and to solve for l (length):

360 = 9l

Step 2:  Divide both sides by 9 to solve for l

(360 = 9l) / 9

40 m = l

Optional Step 3:  We can check our answers by checking that the product of 40 and 9 is 360

40 * 9 = 360

360 = 360

Answer:

c.

Step-by-step explanation:

because on you have to add 4 to the number above. so 3+4 equals 7 so you move 4 spaces to the right on the number line to get you 7. so C is the correct answer

Answer:

slope=2/3

Step-by-step explanation:

form is y=mx+b where m is the slope.

Answer:324pie cm^2

Step-by-step explanation:

Answer:

6x² + 19x + 15

Step-by-step explanation:

2x(3x+5)+3(3x+5)

= (3x + 5) (2x + 3)

= 6x² + 9x + 10x + 15

= 6x² + 19x + 15

So, the answer is 6x² + 19x + 15

We can start by simplifying the left side of the equation using the distributive property:

2x(3x+5)+3(3x+5) = (2x)(3x) + (2x)(5) + (3)(3x) + (3)(5)

= 6x^2 + 10x + 9x + 15

= 6x^2 + 19x + 15

Now we can compare this expression with the right side of the equation, which is a polynomial in x with unknown coefficients a, b, and c:

ax^2 + bx + c

Since the two sides are equal, their corresponding coefficients must be equal as well. This gives us a system of three equations in three unknowns:

a = 6 (the coefficient of x^2)

b = 19 (the coefficient of x)

c = 15 (the constant term)

Therefore, the solution to the equation 2x(3x+5)+3(3x+5)=ax^2+bx+c is:

2x(3x+5)+3(3x+5) = 6x^2 + 19x + 15

Answer:

X < 7/2

Step-by-step explanation:

Move the variable to the left, separate into possible cases , solve, find the intersections, find the union, and then you get your solution.

Step-by-step explanation:

Given that:

|2x-7| = 7-2x

⇛2x-7 = 7-2x or -(7-2x)

since |x| = a ⇛ x = a or x = -a

⇛2x-7 = 7-2x or 2x-7 = 2x-7

Shift all variables on LHS and constant on RHS, changing it's sign.

⇛2x+2x = 7+7

Add the values on LHS and RHS.

⇛4x = 14

Shift the number 4 from LHS to RHS.

⇛x = 14/4

Write the fraction in lowest form by cancelling method.

⇛ x = {(14÷2)/(4÷2)}

⇛x = 7/2

There is no solution for negative value

x = 7/2

Please let me know if you have any other questions.

Answer:

\(x=-32.73\,,\,y=85.43\)

Step-by-step explanation:

Given: \(y=3.58x+202.6\,,\,y=2.3x+160.7\)

To find: value of x and y

Solution:

\(y=3.58x+202.6\,\,(i)\\y=2.3x+160.7\,\,(ii)\)

From equation (i) and (ii),

\(3.58x+202.6=2.3x+160.7\\3.58x-2.3x=160.7-202.6\\1.28x=-41.9\\x=\frac{-41.9}{1.28}=-32.73\)

Put \(x=-32.73\) in (i)

\(y=3.58(-32.73)+202.6\\=-117.17+202.6\\=85.43\)

Answer:

1914-1918

Step-by-step explanation:

Answer:

Step-by-step explanation:

Begin by combining like terms and then factoring. Combining like terms will give you

\(10p^2-17p-20=0\) Using the "old-fashioned" way of factoring, the a times c method, our a = 10, b = -17 and c = -20.

a * c = 10(-20) = -200 and now we need the factors of 200 (don't worry about the negative) that combine to give us that middle term, -17p (here is where the negative matters). The factors of 200 are:

1. 200;  2, 100;  4. 50;  5, 40;  8, 25;  10, 20

The combination of those numbers that can be manipulated to give us a -17p is the 8, 25 as long as we say that the 25 is negative and the 8 is positive. Rewrite the original polynomial to reflect those factors:

\(10p^2-25p+8p-20=0\) and then factor by grouping:

\((10p^2-25p)+(8p-20)=0\) and factor out from each set of parenthesis what is common:

\(5p(2p-5)+4(2p-5)=0\) again factor out what is common:

(2p - 5)(5p+ 4) = 0. These are the factors; therefore the solutions are

2p - 5 = 0 so

2p = 5 and

p = 5/2  and

5p + 4 = 0 and

5p = -4 so

p = -4/5

The value that would be put for r is; 0.042.

Interest rates

The amount that the lender charges the borrower over and beyond the principal amount is referred to as the interest rate. A person who deposits money in a bank or other financial institution also earns additional income in terms of the recipient, known as interest, taking into account the time value of money.

We are given the monthly payment formula for present value as;

M = (Pr(1 + r)ⁿ)/(1 - r) - 1

Where;

P is the Present Value

r is the interest rate

n is the number of times compounded

Now, we are told the interest rate is given as 4.2% and so we can write that; r = 4.2/100 = 0.042

Know more about Interest rates at:

https://brainly.com/question/25793394

#SPJ4

-17 can be expressed as the sum of its integer and decimal parts.

-6.75+(-10.25)

Remove parentheses: (-a)=-a

=-6.75-10.25

Subtract the numbers: -6.75-10.25=-17

=-17

Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers. The inverse additives of the equivalent positive numbers are the negative numbers.

An integer, pronounced "IN-tuh-jer," is a whole number that can be positive, negative, or zero and is not a fraction. Integer examples include: -5, 1, 5, 8, 97, and 3,043. The following numbers are examples of non-integer numbers: -1.43, 1 3/4, 3.14,.09, and 5,643.1.

To learn more about integer  visit:https://brainly.com/question/15276410

#SPJ1

Answer:

0.5

Step-by-step explanation:

(1/10•10)•0.5

ohh the ten goes first not the fraction but it did it both ways and got the same answer

Answer:

The slope is -1/4

Step-by-step explanation:

perpendicular line is \(y=-\frac{1}{4}x-6\)

By using formula volume of cone, When the pile is 5 feet high, the height of the pile is increasing at a rate of 0.0169 feet per minute.

What does volume mean in plain terms?

A solid shape's capacity is measured using volume, a three-dimensional quantity.

                   It implies that a closed figure's volume determines how much three-dimensional space it can fill.

Volume of cone = 1/3πr²h

          If the Base Diameter = Height of the Cone

The radius of the Cone = h/2

Therefore,

  volume of the cone = πh/3 (h/2)²

            v = πh³/12

  Rate of Change of the Volume, dV/dt = 3πh²/12  dh/dt

  Since gravel is being dumped from a conveyor belt at a rate of 10 cubic feet per minute. Therefore, the Volume of the cone is increasing at a rate of 10 cubic feet per minute.

      dV/dt = 4ft³/min

 We want to determine how fast is the height of the pile is increasing when the pile is 5 feet high.

We have

         3πh²/12  dh/dt   = 4

 when  h = 5 feet

   3π * 5²/12  dh/dt  = 4

 75π dh/dt  = 4

 dh/dt = 4/75π

  dh/dt = 0.0169 feet per minute.

When the pile is 5 feet high, the height of the pile is increasing at a rate of 0.0169 feet per minute.

Learn more about volume of cone

brainly.com/question/1984638

#SPJ4

Answer:

11 and 6 respectively

Step-by-step explanation:

1st number=x

2nd number=x-5

three times the second number=3(x-5)=3x-15

3x-15+x=29

put the liketerms together=3x+x=29+15

4x=44

(divide both sides by 4)x=11

Answer:

Combine like terms

Step-by-step explanation:

Answer:

-2(x-5)=-2x-10 = -20

or

-2(x-5)=-2x-10 = 20

bro it is not be seen clearly so sorry

The point- slope form of the line is y-5 = -0.25(x+6).

What is line?

A line is an one-dimensional figure. It has length but no width. A line can be made of a set of points which is extended in opposite directions to infinity. There are straight line, horizontal, vertical lines or may be parallel lines perpendicular lines etc.

A line with a slope of –1/4 passes through the point (–6,5)

Any line in point - slope form can be written as

y - y₁= m(x -x₁) -------(1)

where,

y= y coordinate of second point

y₁ = y coordinate of first point

m= slope of the line

x= x coordinate of second point

x₁ = x coordinate of first point

In the given problem (x₁ , y₁) = (-6,5) and m= -1/4

Putting all these values in equation (1) we get,

y-5= (-1/4) (x- (-6))

⇒ y-5 = -0.25(x+6)

Hence, the point- slope form of the line is y-5 = -0.25(x+6).

To know more about line

brainly.com/question/13763238

#SPJ1

To construct a 3×3 matrix, not in echelon form, whose columns span ℝ³, we can choose three linearly independent vectors as the columns of the matrix.

To demonstrate that the constructed matrix has the desired property of spanning ℝ³, we can construct a specific example. Let's consider the matrix A:

A = [[1, 0, 0],

[0, 1, 0],

[0, 0, 1]]

In this case, A is a 3×3 matrix with three columns [1, 0, 0], [0, 1, 0], and [0, 0, 1]. Each column represents a standard basis vector in ℝ³.

To show that the columns of A span ℝ³, we need to demonstrate that any vector in ℝ³ can be expressed as a linear combination of the columns of A.

Let's consider an arbitrary vector x = [x₁, x₂, x₃]ᵀ in ℝ³. We can express x as a linear combination of the columns of A:

x = x₁[1, 0, 0] + x₂[0, 1, 0] + x₃[0, 0, 1]

Simplifying this expression, we get:

x = [x₁, x₂, x₃]ᵀ

Thus, we have shown that any vector x in ℝ³ can be expressed as a linear combination of the columns of the matrix A. Therefore, the columns of A span ℝ³.

Note: It is important to emphasize that there are many possible matrices that can be constructed to satisfy the given condition. The example provided here is just one of the many valid choices

To learn more about

Matrix

brainly.com/question/29132693

#SPJ11

To construct a 4x2 matrix D such that AD=I2, we can use the following matrix: D = [0 0 1 0; 0 0 0 1]. It is not possible for CA to be equal to 4 or 14 for any 4x2 matrix C.

Constructing a matrix D such that AD=I2

Let A = -1 be a 1x1 matrix. We want to construct a 4x2 matrix D such that their product AD is equal to the 2x2 identity matrix I2. We can use the following matrix for D:

D = [0 0 1 0; 0 0 0 1; 1 0 0 0; 0 1 0 0]

To verify that AD=I2, we can compute the matrix product:

AD = [-1 0 0 0; 0 -1 0 0] [0 0 1 0; 0 0 0 1; 1 0 0 0; 0 1 0 0]

= [0 0 -1 0; 0 0 0 -1]

= -I2

Note that D only uses 1 and 0 as entries.

Now, it is not possible for CA to be equal to 4 or 14 for any 4x2 matrix C. To see why, we can use the definition of matrix multiplication. Let C be a general 4x2 matrix:

C = [c11 c12; c21 c22; c31 c32; c41 c42]

Then, we can compute CA as:

CA = [-1 0; 0 -1] [c11 c12; c21 c22; c31 c32; c41 c42]

= [-c11 -c12; -c21 -c22; -c31 -c32; -c41 -c42]

Since CA is a 4x2 matrix and 4 is a scalar, it is not possible for CA to be equal to 4. Similarly, since the entries of C are only 0 or 1, it is not possible for CA to be equal to 14.

Therefore, there is no matrix C that satisfies the equations CA=4 or CA=14.

To know more about matrix here:

https://brainly.com/question/28180105#

#SPJ11

Answer:

That would 40 degrees.

(Sorry I can't explain rn) It would have to do with exterior angles.

Answer:

40/41

Step-by-step explanation:

cos = adjacent/hypotenuse

adj = 40, hyp = 41

The midpoint has coordinates (19,19) as per the midpoint formula.

The statement is false.

The statement is false. The midpoint of the segment joining two points is determined by taking the average of their x-coordinates and the average of their y-coordinates. In this case, the two given points are (0,0) and (38,38).

To find the x-coordinate of the midpoint, we take the average of the x-coordinates of the two points:

(x1 + x2) / 2

= (0 + 38) / 2

= 38 / 2

= 19

Therefore, the x-coordinate of the midpoint is 19, which matches the statement. However, to determine if the statement is true or false, we also need to check the y-coordinate.

To find the y-coordinate of the midpoint, we take the average of the y-coordinates of the two points:

(y1 + y2) / 2

= (0 + 38) / 2

= 38 / 2

= 19

The y-coordinate of the midpoint is also 19. Therefore, the coordinates of the midpoint are (19,19), not 19 as stated in the statement. Since the midpoint has coordinates (19,19), the statement is false.

To learn more about the midpoint;

https://brainly.com/question/28224145

#SPJ4

Answer:

The first/top table represents a function

Step-by-step explanation:

This is because all the input values are different. In the second table, there are 2 input values of "3". In the third table, there are 2 input values of "-8" and in the last table there are 2 input values of "10" and 2 input values of "20".

After solving the given equation, the value of variable a is 6.81 respectively.

Every equation is a formula.

Not all equations have formulas. It is the purpose of equations to be solved for a variable.

We analyze formulas.

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions.

For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

2/3a  -7 + 7/18a - 5 1/6 = 0

2/3a + 7/18a = 7 + 6/31

12a+7a/18 = 7+6/31

19a/18 = 7+6/31

19a = (7+6/31)18

19a = (217+6/31)18

19a = (223/31)18

19a = 4,014/31

a = 4014/31*19

a = 4014/589

a = 6.81

Therefore, after solving the given equation, the value of variable a is 6.81 respectively.

Know more about equation here:

https://brainly.com/question/2972832

#SPJ1

Complete question:

Solve the given equation: 2/3a  -7 + 7/18a - 5 1/6 = 0