Solve the following system of equations using the substitution method.
The problem- y= -2x+11
3x + y = 18

Answer:9

Step-by-step explanation:

6/4 = x/6

4x=36

4x/4 36/4

x=9

The length of the segment DC will be 9 units.

A two dimensional shape made up of the three sides and making an angle of 180 degrees is called as triangle.

Given that:-

The length of DC will be calculated by using the ratios:-

6/4 = x/6

4x=36

4x/4 36/4

x=9

Therefore the length of the segment DC will be 9 units.

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The variable expression Nemo could have written either "7x" or "x * 7" to represent "the product of a number and 7."

We have,

Nemo could have written the following two correct variable expressions to represent the phrase "the product of a number and 7":

= 7x

In both expressions, "x" represents the unknown number, and the product of "x" and 7 is obtained by either multiplying "x" by 7 (7x) or by multiplying 7 by "x" (x * 7).

Both expressions are equivalent and correctly represent "the product of a number and 7."

Thus,

The variable expression Nemo could have written either "7x" or "x * 7" to represent "the product of a number and 7."

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Answer:

Distance is 2.2.

Step-by-step explanation:

Use the Pythagorean theorem.

\(Distance=\sqrt{(6-4)^{2} +(2-1)^{2} } =\sqrt{4+1} =\sqrt{5}=2.23\)

This value represents the present worth below which the probability is 0.5, indicating a negative present worth.

To estimate the probability that the present worth is negative using the NORM.INV function in Excel,

we need to calculate the present worth of the project and then determine the corresponding probability using the normal distribution.

The present worth of the project can be calculated by finding the sum of the present values of the annual receipts over the 10-year period, minus the initial investment. The present value of each annual receipt can be calculated by discounting it back to the present using the minimum attractive rate of return (MARR).

Using the given information, the present value of the initial investment is $10,000. The present value of each annual receipt is calculated by dividing the expected return of $1,800 by \((1+MARR)^t\),

where t is the year. We then sum up these present values for each year.

We can use the NORM.INV function in Excel to estimate the probability of a negative present worth. The function requires the probability value, mean, and standard deviation as inputs.

Since we have a mean and standard deviation for the present worth,

we can calculate the corresponding probability of a negative present worth using NORM.INV.

This value represents the present worth below which the probability is 0.5. By using the NORM.INV function,

we can estimate the probability that the present worth is negative based on the given data and assumptions.

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The perimeter of one face of the cube is given by the option (A) a/4.


The surface area of a cube is given by the formula 6a^2, where a is the length of one side of the cube. In the given expression 6(a/4)^2, we can simplify it as follows:
6(a/4)^2 = 6(a^2/16) = (6/16) * a^2 = 3/8 * a^2

We know that the perimeter of a square is equal to 4 times the length of one side. In this case, we have a cube, and each face of the cube is a square. Therefore, the perimeter of one face of the cube is 4 times the length of one side.

Hence, the correct option is (A) a/4, as it represents the perimeter of one face of the cube.

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Answer: y = -1/2x + 1

The conclusion of question as discuss below.

The mean is a measure of central tendency that represents the average value of a set of numbers. It is calculated by adding up all the values in the set and then dividing by the total number of values.

Based on the given information, we can say that there is a 95% chance that the true difference (a - b) in the mean weight of the bean burritos between Restaurant A and Restaurant B falls within the interval 0.06 ounce to 0.20 ounce.

Since the confidence interval does not include zero, we can conclude that there is a statistically significant difference between the mean weights of the bean burritos at the two restaurants. Specifically, we can say that the mean weight of the bean burritos at Restaurant A is likely to be heavier than the mean weight of the bean burritos at Restaurant B.

However, it's important to note that we cannot determine the magnitude of the difference or the direction of causation (i.e., whether Restaurant A intentionally makes their burritos heavier or whether they use different ingredients that naturally result in heavier burritos).

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We can infer that there is a statistically significant difference among the mean weights of the bean burritos at the two eateries because the confidence interval does not include zero.

The mean, which reflects the average value of a group of numbers, is a metric of central tendency. It can be calculated by adding up all of the values in the collection, dividing by the total number of values, and then taking the remainder away.

Based on the information provided, we can state that there is a 95% chance that the actual difference (a - b) between Restaurant A and

Restaurant B's mean weight of the bean burritos will lie between 0.06 ounce and 0.20 ounce.

We can infer that there is a statistically significant variance among the mean weights of the bean burritos at the two eateries because the confidence interval does not include zero. We can specifically state that the bean burritos' average weight at Restaurant A is probably heavier than the average bean burrito's weight at Restaurant B.

It's crucial to remember that we cannot establish the size of the difference or the causal relationship. (i.e., whether Restaurant A intentionally makes their burritos heavier or whether they use different ingredients that naturally result in heavier burritos).

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Answer:

the answer is 2

Step-by-step explanation:

Answer:

I got 2 aswell

Step-by-step explanation:

got it right on edge 2020

Answer:

1. 20

2. 34

Step-by-step explanation:

The total budget for the student film was $1300 and $481 was spent on costumes

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent the total budget for the student film.

The student spent $481 on costumes, which was 37% of their total budget, hence:

37% of x = 481

0.37x = 481

x = $1300

The total budget for the student film was $1300 and $481 was spent on costumes

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Answer:

Step-by-step explanation:

Answer:

8 hundredths

Step-by-step explanation:

2 + 6 = 8

Answer: C

Step-by-step explanation: C

2 divided into 9 parts is 2/9.

Let's' explain this visually

Take this pizza, (image below)

Let's say we have two pizzas for 8 friends (including ourselves), so naturally, we'll cut the pizza's each into 9 slices, 1 for each, now everyone gets 1/9 of a pizza, but there are two pizzas, so if we add 1/9+1/9, we'll get two ninths.

Now 2/9=0.2 repeating!

This is how I got my answer sorry for the vague  explanation

Answer:

Perimeter = 15.5 cm

Step-by-step explanation:

Perimeter = sum of all sides

Perimeter = 5 + 1 + 1.5 + 2.5 + 2.5 + (5-1.5-2.5) + 2

perimeter = 5 + 1 + 1.5 + 2.5 + 2.5 + 1 + 2

perimeter = 15.5cm

Answer:

y = 17 - p

Step-by-step explanation:

Given y = (204 - 12p) /12

we need to simplify

To do so all we have to do is divide what is inside of the parenthesis by 12

204/12=17

-12p/12=-p

we're left with y = 17 - p

Answer:

C.

Step-by-step explanation:

For any of the given functions, all of the first input values (x-values) in the relation are considered the domain values. On the other hand, the output values (y-values) are called the range values of the given equation.

The mapped relation is the domain (1, 2, 3). Since this is domain values (x-values), the correct answer will be the mapped with 1, 2, and 3 on the left side.

The correct answer is C.

Hope this helps!

Answer:

Answer:The circumference of this circle is 60.

Hope you could get an idea from here.

Doubt clarification - use comment section.

Answer:

he dividend number is 80, the number used to divide another number is 10 and the result of the dividing two number is 8.

Step-by-step explanation:

is there a picture included in this problem? if so please comment it so i can answer this problem.

The unit tangent vector t(1) at t = 1 is:

t(1) = (4 i + 6 j + 3 k) /\(\sqrt{(61)}\)

To find the unit tangent vector,

we need to calculate the derivative of the position vector r(t) with respect to the parameter t, and then normalize the resulting vector.

Given the position vector r(t) = 4t i + 3t^2 j + 3t k,

we can find the derivative:

r'(t) = d(r(t))/dt

     = 4 i + 6t j + 3 k

Now, we can evaluate r'(t) at t = 1:

r'(1) = 4 i + 6(1) j + 3 k

      = 4 i + 6 j + 3 k

To obtain the unit tangent vector,

we need to normalize r'(1):

t(1) = r'(1) / ||r'(1)||

where ||r'(1)|| represents the magnitude or length of r'(1).

The magnitude of r'(1) is given by:

||r'(1)|| = \(\sqrt{((4^2) + (6^2) + (3^2))}\)

       = \(\sqrt{61}\))

This is the normalized vector representing the direction of the tangent to the curve at the point where t = 1.

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Hey! Your answer would be V=95

1) Notice that, in this case, the center is at (0,0) the focus at (0,4) and the Vertex is at (0,7)

2) Since the focus is at the y-axis, and the center is at the origin we can start from the following formula:

Answer:

By using formula of two points form

y-y1=y2-y1/ x2-x1(x-x1)

y-2= (-8)-2/0-3( x-3)

y-2 = -10/-3 (x-3)

3y-6 = 10x-3

10x-3y+3= 0 is the equation

hope you have understand

Based on the information provided, the promotion method subway is using is sales promotion.

It is a marketing tool that involves letting know potential customers about a product that a company wants to sell.

Most common methods include:

This involves promoting or advertising products through sales, which means customers are offered special discounts or lower prices. This is the method used by the subway because the sub of the day is a sales.

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Answer:

sin (330)

csc (60)

cos (390)

Step-by-step explanation:

Solve the trigonometric equation by isolating the function and then taking the inverse. Use the period to find the full set of all solutions

2= 2

4=10

i cant see 6 or 8

Answer:

220

Step-by-step explanation:

Got it right :)

Pls make me brainliest

Answer:

220

Step-by-step explanation:

The values for AH and AS using the given data and the two methods described are:

AH = -36.4 kJ/mol.

AS = -0.115 kJ/(mol*K),

We shall apply the two provided methods to solve for AH and AS on the provided data.

Method One:

We'll use the Gibbs free energy equation:

ΔG = ΔH - TΔS

where:

ΔG = change in Gibbs free energy,

ΔH = change in enthalpy,

ΔS = change in entropy,

T= temperature in Kelvin.

Given:

T1 = 15 K

T2 = 75 K

ΔG1 = -35.25 kJ/mol

ΔG2 = -28.37 kJ/mol

We set up two equations using the provided data:

Equation 1: ΔG1 = ΔH - T1ΔS

Equation 2: ΔG2 = ΔH - T2ΔS

Method Two:

We subtract Equation 1 from Equation 2 to eliminate ΔH:

ΔG2 - ΔG1 = (ΔH - T2ΔS) - (ΔH - T1ΔS)

ΔG2 - ΔG1 = -T2ΔS + T1ΔS

ΔG2 - ΔG1 = (T1 - T2)ΔS

Now we have two equations:

Equation 3: ΔG1 = ΔH - T1ΔS

Equation 4: ΔG2 - ΔG1 = (T1 - T2)ΔS

Next, we solve these equations to find the values of AH and AS.

Plugging in the values from the given data into Equation 3:

-35.25 kJ/mol = AH - 15K * AS

AH = -35.25 kJ/mol + 15K * AS

Put the values from the given data into Equation 4:

(-28.37 kJ/mol) - (-35.25 kJ/mol) = (15K - 75K) * AS

6.88 kJ/mol = -60K * AS

So, we got two equations:

Equation 5: AH = -35.25 kJ/mol + 15K * AS

Equation 6: 6.88 kJ/mol = -60K * AS

We can solve these two equations simultaneously to find the values of AH and AS.

Substituting Equation 6 into Equation 5:

AH = -35.25 kJ/mol + 15K * (6.88 kJ/mol / -60K)

AH = -35.25 kJ/mol - 1.15 kJ/mol

AH = -36.4 kJ/mol

Put the value of AH into Equation 6:

6.88 kJ/mol = -60K * AS

AS = 6.88 kJ/mol / (-60K)

AS = -0.115 kJ/(mol*K)

So, AH = -36.4 kJ/mol and AS = -0.115 kJ/(mol*K).

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Answer:

(x,y,z)= (0,1,0)

Step-by-step explanation:

Explanation:

Given

[1]XXXx=−1−t

[2]XXXy=2+t

[3]XXXz=1+t

[4]XXX3x+y+3z=1

Substitute the expressions for x,y,z from [1], [2], and [3] into [4]

[5]XXX3(−1−t)+2+t+3(1+t)=1

Simplify [5]

[6]XXX2+t=1

[7]XXXt=−1

(x,y,z)=(−1−(−1),2+−1,1+−1)

XXXX=(0,1,0)