please help me will give brainliest

A) A glass tank is filled with 4.5 liters of water. To make the water more like sea water, 1.99 grams of sodium chloride are added.

B) True or false: Sodium chloride is an electrolyte.

True. Sodium chloride is an electrolyte because it dissociates in water into sodium ions (Na+) and chloride ions (Cl-) which can conduct electricity.

C) What is the solute in this solution?

The solute in this solution is sodium chloride.

D) What is the solvent in this solution?

The solvent in this solution is water.

E) Which one is the right answer: What is the molarity of the resulting solution?

The molarity of the resulting solution can be calculated using the formula:

Molarity (M) = moles of solute / liters of solution

First, we need to convert the mass of sodium chloride added to moles. The molar mass of NaCl is 58.44 g/mol, so:

moles of NaCl = 1.99 g / 58.44 g/mol = 0.034 moles

The volume of the solution is 4.5 liters, so:

Molarity = 0.034 moles / 4.5 L = 0.0076 M

Therefore, the right answer is option c. 0.0076 M.

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Answer:

x=12the opposite side of parallelogram are equal

Answer:

8

Step-by-step explanation:

Since, intercepts made by parallel lines on transversals are in proportion.

Therefore,

\( \frac{x}{24} = \frac{12}{36} \\ \\ \frac{x}{24} = \frac{1}{3} \\ \\ x = \frac{24}{3} \\ \\ x = 8\)

The value of F for each pair of m&a using Newton's second law is 70N.

We have to find the F for each pair of m&a using Newton's second law which gives F = ma. Since m and a are vectors, we use the vector dot product to calculate F.The formula for the vector dot product is given as

A . B = ||A|| ||B|| cosθ.

Here, θ is the angle between the vectors A and B.

θ = 0° because both the vectors are in the same direction. Therefore, cosθ = 1.

Using the formula for the dot product, we have:

F = m . a= ||m|| ||a|| cosθ= m1a1 + m2a2 + m3a3

where ||m|| = √(52 + 82 + 102) = √189 = 13.75, and

||a|| = √(22 + 52) = √29 ≈ 5.39

Therefore,F = m . a= (5 × 2) + (8 × 5) + (10 × 2)= 10 + 40 + 20= 70 N

Thus, the value of F is 70 N.

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Answer:

see explanation

Step-by-step explanation:

to find the zeros let f(x) = 0

1

f(x) = 0 , that is

x(x + 10) = 0

equate each factor to zero and solve for x

x = 0

x + 10 = 0 ⇒ x = - 10

2

f(x) = 0 , that is

x(x - 3) - 4(x - 3) = 0 ← factor out (x - 3) from each term on the left side

(x - 3)(x - 4) = 0

equate each factor to zero and solve for x

x - 3 = 0 ⇒ x = 3

x - 4 = 0 ⇒ x = 4

Answer:

1) x₁ = 0, x₂ = -10

2) x₁ = 3, x₂ = 4

Step-by-step explanation:

Given functions:

\(1)\ f(x)=x(x+10)\)

\(2)\ f(x)=x(x-3)-4(x-3)\)

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

Zero Product Property: If m • n = 0, then m = 0 or n = 0.

Distributive Property: a(b + c) = ab + ac.

Standard Form of a Quadratic: ax² + bx + c = 0.

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

The Zero Product Property

1) f(x) = x(x + 10)

Step 1: Set the function to zero.

\(\implies 0=x(x+10)\)

Step 2: Apply the Zero Product Property.

\(\boxed{x_1=0}\)

\(x+10=0\implies \boxed{x_2=-10}\)

The solutions to this quadratic are: \(x_1=0,\ x_2=-10\).

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

The Zero Product Property

2. f(x) = x(x - 3) - 4(x - 3)

Step 1: Set the function to zero.

\(\implies 0 = x(x - 3) - 4(x - 3)\)

Step 2: Factor out \(x- 3\).

\(\implies 0 = (x - 3)(x - 4)\)

Step 3: Apply the Zero Product Property.

\(x-3=0\implies \boxed{x_1=3}\)

\(x-4=0 \implies \boxed{x_2=4}\)

The solutions to this quadratic are: \(x_1=3,\ x_2=4\).

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

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Answer:

48/50

Step-by-step explanation:

So find 96 percent of 50

Now divide it

48/50

You dont gotta divide, leave it as fraction

The corresponding values of the expressions when y=5 and z=4 is 56.

In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.

Given y=5 and z=4

To find the values of the expression:

4y + 9z

Substitute the values of y and z.

= 4(5) + 9(4)

= 20 + 36

= 56

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Complete questions

What is the value of the expression below when y=5 and z=4?

4y+9z

Answer:

4y + 9z = 56

Step-by-step explanation:

The given expression is,

→ 4y + 9z

The values of y and z are,

→ z = 4

→ y = 5

Solving the given expression,

→ 4y + 9z

→ 4(5) + 9(4)

→ (4 × 5) + (9 × 4)

→ 20 + 36

→ 56 {final answer}

Therefore, the answer is 56.

Answer:

Step-by-step explanation:

The area of the 7 cm by 11 cm rectangle is ...

  A = bh

  A = (7 cm)(11 cm) = 77 cm^2

The area of the circle of radius 2 cm is ...

  A = πr^2 = π(2 cm)^2 = 4π cm^2

If the shaded area lies between the circle and the rectangle, its area is the difference of these:

  shaded area = 77 cm^2 -4π cm^2

Using π = 3.14, this area is ...

  (77 -4·3.14) cm^2 = 64.44 cm^2

Using π = 3.141592, this area is ...

  (77 -4·3.141592) cm^2 ≈ 64.43 cm^2

The shaded area is 64.43 cm^2, (64.44 if you use π=3.14).

_____

Comment on π

Often, you are required to use a specific valued for π, even if that is inappropriate for the number of significant digits required in the answer. In recognition of that, we have offered both the correct answer (64.43) and the one associated with the value of π you may be expected to use.

Answer:

64.43cm ^2

Step-by-step explanation:

First, calculate the area of the whole figure, including the unshaded area.

The area of a rectangle is the length times the width.

7cm x 11cm = 77c\(m^{2}\)

Next, calculate the area of the inner figure.

The area of a circle is \(\pi\)\(r^{2}\)

\(\pi\) x 2cm x 2cm = 4\(\pi\) c\(m^{2}\)

Finally, subtract the area of the inner circle from the area of the outer rectangle.

77 c\(m^{2}\) - 4\(\pi\) c\(m^{2}\) ≈ 64.43 c\(m^{2}\)

Answer:

ratious and axuas

Step-by-step explanation:

Answer:

S & Q are points

R is a ray

SR & RQ are line segments

Step-by-step explanation:

N in (-oo:+oo)

(-5/7)*n+1 = 21 // - 21

(-5/7)*n-21+1 = 0

-5/7*n-20 = 0 // + 20

-5/7*n = 20 // : -5/7

N = 20/(-5/7)

N = -28

N = -28

hope it worked out, since i'm not entirely sure.

Cost of Goods Manufactured is an accounting term used to describe the total cost of producing and manufacturing goods. It includes all direct and indirect costs of production, including labor, materials, overhead, and other expenses. Below are the five components of the cost of goods manufactured.

Direct Materials: It includes the cost of raw materials used in manufacturing a product.

Direct Labor: It includes the wages paid to workers who directly worked on the production line or in manufacturing a product.

Factory Overhead: It includes all indirect costs of manufacturing a product such as depreciation on equipment, rent, insurance, utilities, etc. Work-in-Process

Inventory: It includes the cost of materials, labor, and overhead that has been incurred but has not yet been completed. Finished Goods Inventory: It includes the cost of goods that have been fully manufactured but have not yet been sold.

To calculate the cost of goods manufactured, the sum of all these five components is calculated. It helps manufacturers to determine the total cost of goods manufactured and the cost per unit of production. Cost of goods manufactured is essential in determining the pricing strategy for a product as it helps to ensure that the product is profitable.

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The two supplementary angles are 23 and 157 degrees.

Two angles are supplementary when that add up to 180 degrees. In this case, we are given that one of the two angles is 134 degrees more than the other. We can construct the following equation.

x + (x + 134) = 180

x represents the degree measure of the smaller angle. Now, all we need to do is solve the equation for x.

=> 2x + 134 = 180

=> 2x = 180 - 134

=> 2x = 46

=> x = 46/2

=> x = 23

We have the value of the smaller angle, we can easily solve for the larger angle. We are told that it is 134 degrees larger than the other one.

23 + 134 = 157 degree.

Therefore, the two supplementary angles are 23 and 157 degrees.

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The value of x is 5.

We have,

Kite ABCD ~ kite PQRS

This means,

The ratio of the corresponding sides is equal.

Now,

AD/PS = AB/PQ

Cross multiply.

16/24 = 8/(5x - 3)

Simplify.

4/6 = 8/(5x - 3)

5x - 3 = (8 x 6) / 4

Combine like terms

5x - 3 = 12

5x = 12 + 3

Divide 3 on both sides.

5x = 15

x = 5

Thus,

The value of x is 5.

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Step-by-step explanation:

15 ÷6= 2.5

2.5×11=275km

There are six different positive integers divisible by 4 that can be formed using each of the digits 1, 2, 3, and 4 at most once and no other digits: 12, 24, 32, 42, 43, and 124.

1. 12: 1 and 2

2. 24: 2 and 4

3. 32: 3 and 2

4. 42: 4 and 2

5. 43: 4 and 3

6. 124: 1, 2 and 4

The six different positive integers divisible by 4 that can be formed using each of the digits 1, 2, 3, and 4 at most once and no other digits are 12, 24, 32, 42, 43, and 124. To find these numbers, we begin by examining all the possibilities that can be formed using the digits 1, 2, 3, and 4. We can form 12, 24, 32, 42, 43 and 124 by combining different combinations of the digits. For example, 12 is made up of the digits 1 and 2. 24 is made up of 2 and 4. 32 is made up of 3 and 2. 42 is made up of 4 and 2.

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As per the graph the intersecting point of the equation has no intersecting points and they are in the form of parallel lines.

Slope of the line y = 2x + 3:

The given equation is in slope-intercept form, y = mx + b, where m represents the slope of the line. By comparing the equation y = 2x + 3 to the slope-intercept form, we can determine that the slope of this line is 2. The coefficient of x, which is 2, represents the slope.

Plotting the line y = 2x + 3:

To visualize this line, we can plot a few points on a coordinate plane and connect them to form a line. We can start by choosing different values for x and then calculate the corresponding y-values using the equation y = 2x + 3. Let's consider a few x-values and find their corresponding y-values:

For x = 0, y = 2(0) + 3 = 3.

For x = 1, y = 2(1) + 3 = 5.

For x = -1, y = 2(-1) + 3 = 1.

Slope of the line 2x - y + 5 = 0:

To find the slope of the line given by the equation 2x - y + 5 = 0, we need to rearrange the equation into slope-intercept form, y = mx + b. Let's do that:

2x - y + 5 = 0

2x + 5 = y

Comparing this to the slope-intercept form, we can see that the slope, m, is equal to 2. So the slope of the line 2x - y + 5 = 0 is also 2.

Plotting the line 2x - y + 5 = 0:

Similar to the previous line, we can plot a few points to visualize this line. Again, we can choose different x-values and find the corresponding y-values using the equation 2x - y + 5 = 0. Let's calculate a few points:

For x = 0, 2(0) - y + 5 = 0, which simplifies to -y + 5 = 0. Solving for y, we get y = 5.

For x = 1, 2(1) - y + 5 = 0, which simplifies to 2 - y + 5 = 0. Solving for y, we get y = 7.

For x = -1, 2(-1) - y + 5 = 0, which simplifies to -2 - y + 5 = 0. Solving for y, we get y = 3.

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Complete Question:

Compute the slopes of y = 2x + 3 and 2x - y + 5 = 0. The try to find the point of intersection of two lines if any.

The probability of exactly five tunnel construction projects taking place in this state at any one time is approximately 0.1008 or 10.08%.

To solve this problem, we will use the Poisson distribution formula. This formula calculates the probability of a given number of events (in this case, tunnel construction projects) happening in a fixed interval (in this case, at any one time) when the average rate of events is known.

The Poisson distribution formula is:
P(x) = (e^(-λ) * λ^x) / x!

Where:
- P(x) is the probability of exactly x events occurring
- λ (lambda) is the average rate of events (3 tunnel construction projects in this case)
- x is the number of events we want to find the probability for (5 tunnel construction projects)
- e is the base of the natural logarithm (approximately 2.71828)
- x! is the factorial of x (the product of all positive integers up to x)

Now, let's plug in the numbers to find the probability of exactly 5 tunnel construction projects taking place at any one time:

P(5) = (e^(-3) * 3^5) / 5!

Step 1: Calculate e^(-3) ≈ 0.04979
Step 2: Calculate 3^5 = 243
Step 3: Calculate 5! = 5 × 4 × 3 × 2 × 1 = 120
Step 4: Multiply and divide: (0.04979 * 243) / 120 ≈ 0.1008

So, the probability of exactly five tunnel construction projects taking place in this state at any one time is approximately 0.1008 or 10.08%.

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We may determine the value of candy costs by solving a linear equation in which the answer is given as

x = $4.00.

We are aware that a shop owner blends two pounds of candy priced at x dollars per pound with three pounds of candy priced at $1.50 per pound. She asks $2.50 for the mixture.

Since the entire cost at the start must equal the total cost at the end, we can express the equation as 2lb + 3lb = 5lb.

2*x + 3*$1.50 = 5*$2.50

This linear equation for x may now be solved:

2*x = 5*$2.50 - 3*$1.50 = $8.00

x = $8.00/2 = $4.00

The sweet has a $4 price tag.

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Answer:

         -259dot - 12abc3

 ————————————————

                  3abc3      

Step-by-step explanation:

Dividing exponential expressions :

a2 divided by a3 = a(2 - 3) = a(-1) = 1/a1 = 1/a

b3 divided by b4 = b(3 - 4) = b(-1) = 1/b1 = 1/b    

Equation at the end of step 3:  -7      

                                       (37 • —————) -  4

                                                 3abc3    

Rewriting the whole as an Equivalent Fraction:

Subtracting a whole from a fraction

Rewrite the whole as a fraction using  3abc3  as the denominator :

          4       4 • 3abc3

   4 =  —  =  —————————

           1         3abc3  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator:

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

     -259dot - (4 • 3abc3)                                         -259dot - 12abc3

—————————————————————  =  ————————————————

             3abc3                                                                     3abc3      

Pulling out like terms:

Pull out like factors :

 -259dot - 12abc3  =   -1 • (259dot + 12abc3)

Trying to factor as a Sum of Cubes:

Factoring:  259dot + 12abc3

Theory : A sum of two perfect cubes,  a3 + b3 can be factored into  :

            (a+b) • (a2-ab+b2)

Proof  : (a+b) • (a2-ab+b2) =

   a3-a2b+ab2+ba2-b2a+b3 =

   a3+(a2b-ba2)+(ab2-b2a)+b3=

   a3+0+0+b3=

   a3+b3

Check :  259  is not a cube !!

-Hope this helped

Answer:

\(y=\frac{6}{13}x+\frac{107}{13}\)

Step-by-step explanation:

(x1, y1) = (-7, 5)

(x2, y2) = (6, 11)

The firs thing to do is fine the slope. That is the distance between the y-coordinates divided by the distance between the x-coordinates:

\(m=\frac{y2-y1}{x2-x1}\)

I marked the points above as points 1 and 2, so you can plug those numbers into the formula:

\(m=\frac{11-5}{6--7}\\\\m=\frac{6}{13}\)

That fraction can't be simplified any further, so the slope of this line is 6/13. The next thing to do is to find the y-intercept.

\(y=mx+b\)

Plug the slope and any point of your choice into the equation. I'll use point b:

\(11=(\frac{6}{13})6+b\)

Now, solve for b:

\(11=\frac{36}{13}+b\\\\11-\frac{36}{13}=b\\\\\frac{143}{13}-\frac{36}{13}=b\\\\\frac{107}{13}=b\\\\b=\frac{107}{13}\)

They're far from clean, but those are the correct slope and y-intercept. Using those, the equation for this line is:

\(y=\frac{6}{13}x+\frac{107}{13}\)

You can confirm that this is the correct equation by checking it with one of the points. Plug in one of the known values of x and make sure it gives the correct value of y:

\(y=\frac{6}{13}(-7)+\frac{107}{13}\\\\y=\frac{-42}{13}+\frac{107}{13}\\\\y=\frac{65}{13}\\\\y=5\)

That works out.

   y - 5 = -1 ( x + 3 )  is Equation of a Lin in slope intercept form,.

What is in slope-intercept form?

Slope between the points M(-3, 5) and N(2, 0).

       m = 0 - 5/2 + 3

       m = -5/5  = -1

the equation of   point-slope form

    y - y₁ = m ( x - x₁ )

   y - 5 = -1 ( x - ( -3 ))

   y - 5 = -1 ( x + 3 )

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Answer:

Step-by-step explanation:

a) See attached picture

b) d=0.5(6)

= 3 - (6,3) --> Time is independent variable so it is the x value

c) 4=0.5t

x=8 --> (8,4)

Gradual, long-term movement in time-series values is called temporal variation. Therefore, the correct option is (a) temporal variation.

Temporal variation is one of the components of a time series, along with seasonal variation, cyclical movement, and irregular or random variation. Temporal variation refers to the long-term trend or pattern of movement in the time series, which can be increasing, decreasing, or remaining constant over time. It is often caused by underlying factors such as population growth, economic changes, or technological advancements.

Cyclical movement refers to the regular, repeating up and down patterns in the time series, which are usually longer than a year and can be caused by factors such as business cycles or political cycles. Exponential smoothing and linear regression are statistical methods used to forecast or model time series data, but they do not describe the components of the time series themselves.

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The 2 steps equations is given by the expression 2x + 10 = 16

Given data ,

Let the equation be represented as A

Now , the value of A is

The value of the equation is equal to 16 , so the right hand side is 16

Now , the left hand side of the equation is determined by

Let , 2x + 10 = 16

On simplifying the equation , we get

Subtracting 10 on both sides , we get

2x = 16 - 10

2x = 6

Divide by 2 on both sides , we get

x = 6 / 2

x = 3

Therefore , the value of x is 3

Hence , the equation is 2x + 10 = 16

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Answer:

3

Step-by-step explanation:

Express the numbers as a product of their primes.

42 = 2 × 3 + 7

30 = 2 × 3 × 5

45 = 3 × 3 × 5

Identify the prime factors common to all 3 numbers.

common prime factor = 3 , thus

GCF = 3

Answer: 3

Step-by-step explanation: The factors of 30 are 1. 2. 3. 5. 6. 10, 15, 30

The factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42

The factors of 45 are 1, 3, 5, 9, 15, 45

As you can see they all share the factors of 1 and 3. Since 3 is the greatest number of the factors all of them share it is the greatest common factor.

Answer:

Step-by-step explanation:

128 - 6x - 39 + 5x = -31 + 9x

89 -x = -31 + 9x

10x = 120

x = 12

m<QRS= -31 + 9(12)= -31 + 108= 77

m<TRS= -39 + 5(12)= -39 + 60= 21

m<QRT= 128 - 6(12)= 128 - 72 = 56

Answer:

y = -7

Step-by-step explanation:

To answer this question, we must first plug in -8 for x:

3(-8) + 5y = -59

-24 + 5y = -59

+24           +24

5y = -35

/5      /5

y = -7

Hope this helps :)

im dumb and answered wrong...

the answer above is right ✅

9514 1404 393

Answer:

  x = 55

Step-by-step explanation:

The marked angles are a linear pair, so total 180°.

  75 + (2x -5) = 180

  2x = 110 . . . . . . . . . . subtract 70

  x = 55 . . . . . . . . divide by 2

Answer: 4x -8+ 125x -4x +5

Answer:

none

Step-by-step explanation:

(2x+3)(4x^2-5x+6)

factor over

8x^3-10x^2+12x+12x^2-15x+18

combine like terms

8x^3 + 2x^2 - 3x + 18