Find the equation of the line that passes through the point (3,7) and is parallel to the line that passes through (5,5) and (5,3). Plot on the plane.

The molar heat of fusion for substance X , given the data is 775.6 cal/mol

Mole = mass / molar mass

Mole = (326 / 58.45) moles

Q = n × ΔHf

4325.8 = (326 / 58.45) × ΔHf

4325.8 = (326 × ΔHf ) / 58.45

Cross multiply

326 × ΔHf = 4325.8 × 58.45

Divide both sides by 326

ΔHf = (4325.8 × 58.45) / 326

ΔHf = 775.6 cal/mol

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The coefficient of determination (R²) for the given data is approximately 0.920. This value indicates that approximately 92% of the variability in the dependent variable can be explained by the independent variable using the least squares regression line.

Calculate R² using the given information. R², also known as the coefficient of determination, measures the proportion of variability in the dependent variable that can be explained by the independent variable using the least squares regression line.

calculate R²:

1. You have been provided with the total sum of squares (SST) which is 2640.8, and the sum of squares of regression (SSR) which is 2429.8.

2. To calculate R², you need to divide SSR by SST:
  R² = SSR / SST

3. Now, substitute the given values:
  R² = 2429.8 / 2640.8

4. Perform the division:
  R² ≈ 0.920

5. Finally, round R² to three decimal places:
  R² ≈ 0.920

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Answer:

area is 78.54 and circumference is 31.42

Step-by-step explanation:

Answer:

Area- 78.5 square feet

Circumference- 31.40

Step-by-step explanation:

Formula for Area of Circle:

Area = \(pi\) x radius²

or

Area= pi x d

Formula for Circumference of a circle:

2 x pi x r

Radius= half the Diameter

D= diameter

R= radius

Pi= 3.14

Answer:

x+y=85 and x-y=20

x=85-y x=20+y

85-y=20+y

85-20-y-y=0

65-2y

-2y=65

y=-65/-2

y=32.5

finding x by substituting y=32.5

x+y=85

x+32.5=85

x=85-32.5

x=52.5

.

Answer:0.375

Step-by-step explanation:

3/4=0.75

0.75/2=0.375

(3/4)/2=0.375

Answer: =25a−20

Step-by-step explanation: Hope this help :D

Answer:

Add 15a and 10a. 25a−20

Step-by-step explanation:

The type of sampling used in the scenario described is convenience sampling. Convenience sampling is a non-probability sampling technique in which individuals are selected for the sample based on their availability and willingness to participate.

In this case, the researcher selected 19 work colleagues who work in the same building, which may have been convenient for the researcher due to proximity and accessibility.

Convenience sampling is a quick and inexpensive way to gather data, but it has limitations in terms of representativeness and generalizability. Since the sample is not selected at random, it may not be representative of the entire population of interest. Additionally, individuals who are more accessible and willing to participate may have different characteristics or experiences than those who are not.

Therefore, it is important to consider the potential biases and limitations of convenience sampling when interpreting the results of a study. In situations where representativeness and generalizability are important, a more rigorous and systematic sampling technique, such as random or stratified sampling, may be more appropriate.

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Answer:

Step-by-step explanation:

Where are the answer choices?

Still, it's possible to help you without your having shared those choices.

The "difference quotient" is defined as:

 f(x + h) - f(x)

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

           h

where h represents an incremental (small) change in x.

Here f(x) = 3 - log x, and so f(x + h) = 3 - log (x + h).

Therefore the difference quotient is:

{3 - log (x + h)} - {3 - log x}

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

                    h

This can be simplified.  In the numerator we have 3 - 3, so the numerator simplifies to -log (x + h) + log x

and the difference quotient is

-log ( x + h) + log x

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

              h

This can be rewritten as

log x - log (x + h)                                x                                  x

--------------------------- , or (1/h)*log ------------ , or  (1/h) log { ----------- }

              h                                       (x + h)                            x + h          

Answer:

B

Step-by-step explanation:

I guessed and got it right.

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The surface area of the triangular pyramid will be 4 times the area of the triangle.

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°.

If a triangular pyramid is made up of equilateral triangles, then this 3D shape will have 4 equilateral triangles and every triangle will be connected to the other 3 triangles.

Now since the area of each equilateral triangle is the same, and the area of an equilateral triangle is known then the surface area of the triangular pyramid will be 4 times the area of the triangle.

Hence, the surface area of the triangular pyramid will be 4 times the area of the triangle.

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Answer:

8

Step-by-step explanation:

\(x - y \\ \\ = 6 - ( - 2) \\ \\ = 6 + 2 \\ \\ = 8\)

You are a genius and not a stupid.

The percentage rate of mark up from 1948 to 1967 is 12,631.65%.

Generally speaking, the markup price of a product can be calculated by multiplying the cost price by the markup value.

In order to determine the percentage rate of markup from 1967 to 192013, we would calculate the total overall cost and apply direct proportion as follows.

In 1948:

Total overall cost = 124 × 66

Total overall cost = $8,184.

In 1967:

Total overall cost = $15,787.25 × 66

Total overall cost = $1,041,958.5.

Mark up price = 1,041,958.5 - 8184.

Mark up price = 1,033,774.5

1,033,774.5/8,184 = x/100

x = 1,033,77450/8,184

x = 12,631.65%

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Complete Question:

In 1948, 5 people bought 66 acres of land for $124.00 per acre, In 1967, the same 66 acres was sold and bought for $15,787.25 per acre.

What was the percentage rate of mark up from 1948 to 1967?

Answers:

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

Explanation:

BC = 78 is parallel to the midsegment DE.

This parallel midsegment is half as long as BC, so DE = BC/2 = 78/2 = 39

-------

DF = 34 doubles to AB = 2*DF = 2*34 = 68, since the midsegment is half as the parallel side, so we just think in reverse of that process.

-------

BE = 34 for two reasons

--------

We don't use the info that AC = 48.

Answer:

x = 7; y = 11

Step-by-step explanation:

AB = x

AB = CD

CD = 7 so....

x = 7

AD = y + x

AD = BC

BC = 18 so...

y + x = 18    

y + 7 = 18                        subtract 7 from 18

y = 11

Answer:

x = 7

y = 11

Step-by-step explanation:

Do you see those little arrow marks? Those indicate that if a side has those marks, they have the same length. If a side with one arrow is 7 units long, then it means that x = 7, because the side with x also has one arrow. Then, just plug in 7 into the y+x equation, and set it equal to the other side. (18).

y + 7 = 18; subtract 7 from both sides, to get x = 7; y = 11.

Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day, and good luck on your assignment. :)

Answer:

19

Step-by-step explanation:

Substitute the values and use the order of operations to find the correct value.

q · s + r

2 · 5 + 9

10 + 9

19

The value of x is expressed as x = -5 ± 12. 9

From the information given, we have the quadratic equation given as;

x² + 5x - 84 = 0

Given the quadratic general formula as;

ax + bx + c

We have the variables as;

a = 1

b = 5

c = -4

Then, using the formula, we get;

x = -b± √b²-4ac

Substitute the values

x = -(5) ± \(\sqrt{\frac{-(5) - 4(1)(-84)}{2(1)} }\)

Multiply the values, we get

x = -5± √331/2

Divide the values, we get;

x = -5 ± √165.5

Find the square root of the value

x = -5 ± 12. 9

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Answer:

Step-by-step explanation:

Given: |x + 5| = 9

Absolute value is the exact distance of an integer or number from zero on a number line. As a result, the absolute value is never negative and is always positive.

You should solve for x in this case:

|x + 5| = 9

      -5   -5

x = 4

|x + 5| = 9

-x - 5 = 9    <- The absolute value makes what is in it positive. Taking it off will make what was in it negative.

-x - 5 = 9

    +5   +5

-x = 14

x = -14

The meaning of the g-value when h = 1 is the number of gallons of gas left in the tank after 1 hour is 13.5 gallons.  

An equation is a mathematical statement that uses an equal sign to show that two expressions are equivalent. An equation can contain variables, constants, and mathematical operations, such as addition, subtraction, multiplication, and division.

Here we have

Camila wrote an equation to represent gallons of gas she has left in her tank, g = 14 − 0.5h  

Where g is the number of gallons and h is the time in hours.    

At h = 1

The amount of gas, g = 14 − 0.5(1)

= 14 − 0.5 = 13.5

This implies after 1 hour the amount of gas left in Camila's tank is 13.5 gallons of gas

Therefore,

The meaning of the g-value when h = 1 is the number of gallons of gas left in the tank after 1 hour is 13.5 gallons.  

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Given:

The units sold follows the equation

\(U = 10000-2000P\)

To find:

An equation for sales as a function of price.​

Solution:

Let S represents the sales function.

We know that, the money from sales is equal to the units sold times the price P of the unit.

\(S=U\times P\)

\(S=(10000-2000P)\times P\)

Using distributive property, we get

\(S=10000P-2000P^2\)

Therefore, the equation for sales as a function of price is \(S=10000P-2000P^2\).

Answer:

4.70

Explanation:

Using a calculator:

There are 9 members scored at least 1 goal last season.

Given that, the soccer coach is preparing for the upcoming season by seeing the number of goals his team members scored last season.

Player - number of goals,

Player1 - 5,

Player 2 - 4,

Player3 - 7,

Player4 - 1,

Player5 - 2,

Player6 - 0,

Player7 -9,

Player8 -0,

Player9 -1,

Player 10 -2,

Player 11 -1

To find the number of player with at least 1 goal is by checking the player who have scored one or more than one goal.

Consider the given data gives,

Player 1, player 2, player3, player4, player5, Player7, player9 , player 10, player 11.

Therefore, there are 9 members scored at least 1 goal last season.

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The present value of an amount of $3,000 due to be paid in 3 years is equal to an amount, that with accumulated desired interest would grow to be $3,000 three years from now. This is because the present value is the value of the future payment today, after taking into account the time value of money and the interest rate. The answer to this question is C.

To calculate the present value of $3,000 due in 3 years, we need to discount the future payment back to its present value using the interest rate. This means that we need to find an amount that, when invested today at the given interest rate, will grow to be $3,000 in 3 years.

For example, if the interest rate is 5%, the present value of $3,000 due in 3 years would be approximately $2,530. This means that if you invest $2,530 today at 5% interest, it will grow to be $3,000 in 3 years.

Therefore, the correct answer is C, and we need to know the interest rate to calculate the present value accurately. Answer A is incorrect because the expected value of $3,000 does not take into account the time value of money and the interest rate. Answer B is incorrect because the present value should always be less than the future value if the interest rate is greater than zero. Answer D is incorrect because the expected value and the present value are not the same.

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Answer:

8

Step-by-step explanation:

Answer:

12 edges

Step-by-step explanation:

It might help to drag your finger along the edges in the image. Think about it as if you had to make this image out of sticks. How many sticks would you need to make a standing frame like this one?

12 sticks

It has no solution but it has a answer.

Answer:h = 3/4

Exact form: h = 3/4

Decimal form: h = 0.75

Step-by-step explanation:

What I did was Factor and set each factor equal to zero. Also I tried to Find All Complex Solutions and it only has one, and how I came up with the solution is by solving the Inequality for h.

Answer:

no solution

Step-by-step explanation:

For the probability distribution of a discrete random variable x, the sum of all values of x must be equal to 1.

We have,

The sum of all values of a discrete random variable x in its probability distribution should be equal to 1 because the probability distribution represents the likelihood of each possible value occurring.

In other words, the probabilities assigned to each value of x should account for all possible outcomes and collectively add up to the total probability of 1, which represents the certainty or 100% likelihood of an event occurring.

In a probability distribution, each value of x has an associated probability assigned to it.

These probabilities must satisfy two conditions: they must be non-negative (greater than or equal to 0) and their sum must be equal to 1. This ensures that the total probability accounts for all possible outcomes and covers the entire sample space.

By summing up the probabilities for all values of x in the probability distribution, we can verify if they add up to 1. If the sum is not equal to 1, it implies that there is an error in the probability distribution, and it needs to be adjusted to meet the requirement of a valid probability distribution.

Thus,

For the probability distribution of a discrete random variable x, the sum of all values of x must be equal to 1.

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The complete question:

For the probability distribution of a discrete random variable x, the sum of all values of x must be?

The value of the missing number and the 6th term is 3750

The formula for determining the nth term of a geometric sequence with a common ratio greater than one is expressed as;

Tn = ar^n-1

From the information given, the first term(a) is 6 and we are to find the 5th term, thus, n is 5

Let's substitute into the formula

T5 = 6 × 5^5-1

T5= 6× 5^4

Find the value

T5 = 6 × 625

T5 = 3750

Thus, the value of the missing number and the 6th term is 3750

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Answer:

The number 3 represents the fixed cost in the equation which is the flat charge.

Answer:

3.398

Step-by-step explanation:

log(10) 2500 = log(10) (5^2*10^2) = log(10) 5^2 + log(10) 10^2 = 2*log(10) 5 + 2=3.398

Answer:

Step-by-step explanation: