hello, i need help please ​

The mixed fraction 18 7/10 can be changed to the improper fraction 187/10. The correct answer is Option "D".

Here, The number 18 is the whole-number. The number 7 is in the numerator and the number 10 is in the denominator.

A mixed fraction is one that is represented by both its quotient and remainder. A mixed fraction is, for instance, 2 1/3, where 2 is the quotient and 1 is the remainder. An amalgam of a whole number and a legal fraction is a mixed fraction. Improper fraction is solved and simplified form of the mixed fraction. so, 2 1/3 is a mixed fraction 7/3 is the Improper fraction.

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Answer:

Step-by-step explanation:

a False

b True

c True

d Falce

e True

f True

g False

h True

i True

j False

k True

l True

Answer:

cosx

Step-by-step explanation:

using the identity

• sin² = 1 - cos²x

cos²x + cosx - 1 + sin²x

= cos²x + cosx - 1 + 1 - cos²x ← collect like terms

= cos x

Using the compound interest formula the percentage of growth per year (APY), to the nearest hundredth of a percent is 2.82%.

What is Compound Interest?

The interest that is calculated using both the principal and the interest that has accrued during the previous period is called compound interest. It differs from simple interest in that the principal is not taken into account when determining the interest for the subsequent period with simple interest. Compound interest is commonly abbreviated C.I. in mathematics.

To calculate the value of the account after t years, we can use the formula for compound interest -

[tex]A = P(1 + \frac{r}{n} )^{(nt)}[/tex]

where -

A is the final amount

P is the principal amount

r is the annual interest rate (as a decimal)

n is the number of times the interest is compounded per year

t is the number of years

In this case, P = 2800, r = 0.028 (since the APR is 2.8%), n = 365 (since the interest is compounded daily), and we want to find A as a function of t.

So the function that represents the value of the account after t years is -

[tex]f(t) = 2800 \times \big(1 + \frac{0.028}{365} \big)^{(365 \times t)}[/tex]

We can simplify this function by using the fact that 0.028/365 is a constant.

Let's call this constant "k" -

k = 0.028/365

Then we can rewrite the function as -

[tex]f(t) = 2800 \times (1 + k)^{(365 \times t)}[/tex]

Rounding all coefficients to four decimal places, the final function is -

[tex]f(t) = 2800 \times (1 + 0.000077)^{(365 \times t)}[/tex]

To calculate the annual percentage yield (APY), we can use the formula -

[tex]APY = (1 + \frac{r}{n} )^{(n-1)}[/tex]

where r is the annual interest rate and n is the number of times the interest is compounded per year.

In this case, r = 0.028 and n = 365. So the APY is -

[tex]APY = (1 + 0.028/365)^{365 - 1} = 0.02824...[/tex]

Rounding to the nearest hundredth of a percent, the APY is 2.82%.

Therefore, the APY value is obtained as 2.82%.

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Answer:

The quadrilateral is a square. A quadrilateral is a polygon with four sides. There are many types of quadrilaterals such as parallelogram and rhombuses. A rhombus is a parallelogram with four congruent sides. The plural of a rhombus is rhombi.  A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel. A square is a rhombus becasue it has 4 congruent sides and angles

Step-by-step explanation:

Hope this helps!!

In response to the query, we can state that Therefore on "Big Sandy," equation Secretariat's unit speed was roughly 0.05454 miles per hour.

An equation is a mathematical statement that proves the equality of two expressions connected by an equal sign '='. For instance, 2x – 5 = 13. Expressions include 2x-5 and 13. '=' is the character that links the two expressions. A mathematical formula that has two algebraic expressions on either side of an equal sign (=) is known as an equation. It depicts the equivalency relationship between the left and right formulas. L.H.S. = R.H.S. (left side = right side) in any formula.

Secretariat's unit speed can be calculated using the following formula:

Unit speed = distance ÷ time

We are aware that Secretariat covered a distance of 112 miles, or 12 furlongs (1 furlong equals 1/8 mile). Also, we are aware of his timing, which was 2 minutes and 30 seconds, or 150 seconds.

Hence, after entering the values, we obtain:

Unit speed equals 150 seconds over 12 furlongs.

Unit speed = 0.08 furlongs per second

This needs to be multiplied by the conversion factor of 0.681818 to get miles per hour (mph):

Furlong speed equals 0.08 furlongs per second, or 0.681818 miles per hour.

Speed in miles per hour is 0.05454

Therefore on "Big Sandy," Secretariat's unit speed was roughly 0.05454 miles per hour.

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Answer: 81 inches

Step-by-step explanation:

Area of a trapezoid is … Area= 1/2(b1+b2)h

So if we plug it in

Area = 1/2(8+10)9

= 1/2(18)9

= 9(9) = 81

Therefore , the solution of the given problem of triangle comes out to be  y + y√2 and y - y√2.  are the two possible numbers for x.

If a polygon has at least one additional segment, it is a hexagon. Its form is a straightforward rectangle. Something like this can only be distinguished from a regular triangular by edges A and B. Euclidean geometry only creates a portion of the cube, despite the precise collinearity of the borders. A triangular has three sides and three angles.

Here,

Due to the similarity of the two triangles in the diagram, we can create an equation and solve for x using the ratios of respective sides.

Assuming that the line segment's length is x, we can construct the following equation:

=> (2x + y) / x = x / y

=> (2x + y) y = x²

=> 2xy + y² = x²

=> x² - 2xy - y² = 0

This quadratic equation in x has the coefficients a = 1, b = -2y, and c = -y2 in it. The quadratic algorithm yields:

=> x = [2y ± √((2y)² - 4(1)(-y²))] / 2(1)

=> x = [2y ± √(4y² + 4y²)] / 2

=> x = [y ± y√2]

Therefore, y + y√2 and y - y√2.  are the two possible numbers for x.

The two triangles in the illustration are thought to be comparable.

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In practical terms, the meanings of f^(-1)(0.7), f^(-1)(0.5),f^(-1)(0.2) are as follows:f^(-1)(0.7): This means the value of x for which f(x) = 0.7. Here, f^-1 is the inverse function of f. It returns the value of the input x for which the output of the function is 0.7. In other words, if y = f(x), then f^(-1)(y) = x. Hence, f^(-1)(0.7) means the input value of x for which the function returns 0.7 as the output.f^(-1)(0.5): This means the value of x for which f(x) = 0.5. Similarly, the inverse of the function f, f^-1, returns the value of the input x for which the output of the function is 0.5.f^(-1)(0.2): This means the value of x for which f(x) = 0.2. Here, f^-1 is the inverse function of f. It returns the value of the input x for which the output of the function is 0.2. Hence, f^(-1)(0.2) means the input value of x for which the function returns 0.2 as the output.

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A) by mere observation, the triangles from A, B, C, and D that is congruent or similar to Triangle E is Triangle C.

B) The other two triangles that are congruent to each other are Triangles A and B.

Two triangles are considered congruent if they have the same size and shape. This means that all corresponding sides and angles of the two triangles are equal.

In other words, if you were to superimpose one triangle onto the other, they would match up perfectly. The concept of congruence is important in geometry, as it allows us to make precise statements about the relationship between different figures and their properties.

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Full Question:

See the attached image.

Answer: Repost this with the question (not just the graph) attached.

Step-by-step explanation: Please attach the question, otherwise I cannot help you:)

a) July 2- $5600, August 2- $5200, September 2- $4800, October 2- $4400, November 2- $4000

b) The amount owed each month forms an arithmetic sequence because it decreases by the same amount ($400) each month.

For the month of July, the amount owed is

6,000 - 400(1-1) = 6,000 - 400(0) = 6,000 - 0 = $6,000.

For the month of August, the amount owed is

6,000 - 400(2-1) = 6,000 - 400(1) = 6,000 - 400 = $5,600.

For the month of September, the amount owed is

6,000 - 400(3-1) = 6,000 - 400(2) = 6,000 - 800 = $5,200.

For the month of October, the amount owed is

6,000 - 400(4-1) = 6,000 - 400(3) = 6,000 - 1,200 = $4,800.

For the month of November, the amount owed is

6,000 - 400(5-1) = 6,000 - 400(4) = 6,000 - 1,600 = $4,400.

The amount owed by Mr. Taylor on the 2nd of each month starting with July 2 is as follows: July 2- $5600, August 2- $5200, September 2- $4800, October 2- $4400, November 2- $4000. This forms an arithmetic sequence because each month the amount owed decreases by the same amount of $400.Arithmetic sequences are collections of integers where each term following the first is created by adding a predetermined constant to the term before it. In this case, the constant is $400 because each month the amount owed is decreased by $400. An arithmetic sequence can be written as a mathematical expression, with the nth term being expressed as an + d(n-1). In the case of Mr. Taylor, the initial amount (a) is $6,000 and the common difference (d) is -$400 because the amount owed decreases each month. Therefore, each month the amount owed is expressed as 6,000 - 400(n-1).

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Answer:  second graph,and upper curve is  right answer .

Step-by-step explanation: just  put X= 0,1,2,..

and you get Y.  and those are the dots which you have to see that are on that graph.

Answer:

KL=43

Step-by-step explanation:

JKL=60,  jk=17,  KL=43

D) g(x) is exponential; an exponential function increases faster than a linear function.

To determine which function is exponential, find the rate of change between the different years for each function.

An exponential function will have a constant rate of change over time, while a linear function will have a constant slope.

Looking at the table, we can calculate the rate of change between each year for both f(x) and g(x).

Here we have

x                   f(x)         g(x)

1995    69,682.50    72,429.27

2000   78,943.50   79,967.77

2005   88,204.50   88,290.88

2006   90,056.70   90,056.70

2007    91,908.90   91,857.83

2010    97,465.50  97,480.27  

Calculate the rate increase the both cases

From f(x)  

For the years 1995 to 2000

=  [78,943.50 - 69,682.50 ]/ 69,682.50 x 100  = 13.3%

For the years 2000 to 2005

= [88,204.50 - 78943.50]/ 78943.50 × 100 = 11.73  

For g(x)

For the years 1995 to 2000

= [ 79,967.77 - 72,429.27]/ 72,429.27× 100 = 10.40  

For the years 2000 to 2005

= [ 88,290.88 - 79,967.77]/79,967.77  × 100 = 10.40  

Here we can observe that the rate of increase in g(x) is constant whereas in f(x) the rate of increase is decreasing

Hence we can conclude that

D) g(x) is exponential; an exponential function increases faster than a linear function.

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The mean and standard deviation of sleep time for the population are 9.2 hours and 8.225 hours.

In statistics and probability theory, the normal distribution is a continuous probability distribution that is often utilised. Due to its distinctive form, it is sometimes referred to as the bell curve or the Gaussian distribution. Many statistical and data analysis techniques, such as confidence intervals, regression analysis, and hypothesis testing, all make use of the normal distribution. It is well recognised that many real-world occurrences, like heights, weights, and IQ scores, follow a normal distribution, making it a useful tool for data analysis and interpretation.

Given that, 5% of average sleep time is less than 9 hours.

The z-score for the lower 5% percentile is z = -1.645.

Similarly, for upper 5th percentile we have z = 1.645.

The z-score is given as:

z = (x - μ) / σ

For the lower 5th percentile:

-1.645 = (9 - μ) / σ

For the upper 5th percentile:

1.645 = (9.4 - μ) / σ

Adding the two equations we have:

-1.645σ = (9 - μ)

1.645σ = (9.4 - μ)

0 = 18.4 - 2μ

μ = 9.2 hours.

Substitute the value of μ:

1.645σ = (9.4 - 9.2)

1.645σ = 0.2

σ = 8.225

Hence, the mean and standard deviation of sleep time for the population are 9.2 hours and 8.225 hours.

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Answer:

x = 11

Step-by-step explanation:

1) Put our angles into an equation

We know that all these angles in the triangle must add up to 180 so to put it simply we can write it as...

2) Simplify

To simplify what we have been given so far, we have to collect like terms.

3) Solve the equation

To solve this equation we have to isolate the x and to do this we have to get rid of the 92 and the 8. To get rid of these we have to subtract 92 from both sides and divide 8 from both sides!

This means x = 11

Hope this helps, have a lovely day! :)

Answer:

See below.

Step-by-step explanation:

We are asked to find the value of x.

First, we should know that a Triangles' angles adds up to 180° due to the Triangle having 3 sides.

Since a Triangles' angles add up to 180°, we can set all of the angles' combined sum equal to 180°.

Our Equation:

[tex]6x+x+45+x+47=180[/tex]

We can begin solving for x.

Combine Like Terms:

[tex]8x+92=180[/tex]

Subtract 92 from both sides:

[tex]8x=88[/tex]

Divide by 8:

[tex]\frac{8x}{8} = \frac{88}{8} \\x = 11.[/tex]

Our final answer is x equals 11.

The equation has no solution as 10 + x ≠ 5 + x

When the value of x is 2, the equation also have no solution as 12 ≠ 7

Algebraic expressions are simply defined as expressions that are composed of terms, variables, constants, factors and coefficients.

These algebraic expressions are expressions that are identified with arithmetic operations, such as;

From the information given, we have;

6 + x + 4 = 2 + x  + 3

collect the like terms, we have

10 + x = 5 + x

But we know that 5 is not equal to x and thus, the equation has no solution

Now, let's substitute the value of x as 2, we have;

10 + 2 = 5 + 2

This gives;

12 = 7

This is not true and thus, the equation has no solution

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For example, if the estimated population proportion of adult office workers who have worn a Halloween costume to the office at least once is 0.25 and the sample size is 400, the margin of error would be calculated as follows:

[tex]ME = 1.96*sqrt((0.25*(1-0.25))/400) = 0.032.[/tex]

The margin of error is 0.032. This means that if you were to survey a sample of adult office workers about the proportion of them who have worn a Halloween costume to the office at least once, the results of the survey would be within plus or minus 0.032 of the true population proportion 95% of the time.

To calculate this margin of error,

use the following formula:[tex]ME = 1.96*sqrt((p*(1-p))/n)[/tex] where p is the estimated population proportion and n is the sample size.

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The required answers are a) P ≈ $441.59, b) $79,486.20, c) $23,486.20.

(a) To find Austin's monthly payment, we can use the formula for the monthly payment on an amortized loan:

P = (A * r) / (1 - (1 + r)^(-n))

where:

P = monthly payment

A = loan amount = $56,000

r = monthly interest rate = 5.25%/12 = 0.004375

n = total number of payments = 15 years * 12 months/year = 180

Plugging in these values, we get:

P = (56000 * 0.004375) / (1 - (1 + 0.004375)^(-180))

P ≈ $441.59

Therefore, Austin's monthly payment is $441.59.

(b) If Austin pays the monthly payment each month for the full term, he will make 180 payments. So his total amount to repay the loan is:

Total amount = Monthly payment * Number of payments

Total amount = $441.59 * 180

Total amount ≈ $79,486.20

Therefore, Austin will repay a total of $79,486.20 over the 15-year term.

(c) To find the total amount of interest Austin will pay, we can subtract the original loan amount from the total amount he will repay:

Total interest = Total amount - Loan amount

Total interest = $79,486.20 - $56,000

Total interest ≈ $23,486.20

Therefore, Austin will pay a total of approximately $23,486.20 in interest over the 15-year term.

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At a confidence level of 95%, the interval estimate for the average proportion of defective widgets is approximately 0.020 to 0.082.

To find the confidence interval for the proportion of defective widgets, we can use the formula:

CI = p ± z*(sqrt(p*(1-p)/n))

where:

p = proportion of defective widgets in the sample

z* = the z-value for the desired confidence level

n = sample size

The z-value depends on the desired confidence level. For example, if we want a 95% confidence level, we would use a z-value of 1.96 (from the standard normal distribution table).

Plugging in the values given in the problem, we get:

p = 23/450 = 0.0511

n = 450

z* = 1.96 (for a 95% confidence level)

sqrt(p*(1-p)/n) = sqrt(0.0511*(1-0.0511)/450) ≈ 0.016

Therefore, the 95% confidence interval for the proportion of defective widgets is:

CI = 0.0511 ± 1.96*0.016

= (0.020, 0.082)

This means we are 95% confident that the true proportion of defective widgets in the population is between 0.020 and 0.082.

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Therefore, the scale factor of the drawing is 4/3.

In mathematics, the scale factor is the ratio between two corresponding measurements in different scales. It is a measure of how much a figure or object has been scaled up or down, compared to its original size. The scale factor is often used in geometry and is particularly useful when creating scale drawings or models. A scale drawing is a drawing that is proportional to the actual size of the object it represents, but is scaled down or up by a certain factor to fit on a piece of paper or to make it easier to work with. The scale factor is used to determine the relationship between the measurements of the original object and the measurements of the scaled-down or scaled-up version.

Here,

To find the scale factor of the drawing, we need to determine the ratio of the length in the drawing to the actual length.

Here, the scale is given as 8 inches = 6 feet. This means that every 8 inches in the drawing represents 6 feet in real life.

To find the ratio of the length in the drawing to the actual length, we can set up a proportion:

8 inches / 6 feet = x inches / y feet

where x is the length in the drawing that corresponds to a length of y feet in real life.

To solve for x, we can cross-multiply and simplify:

8 inches * y feet = 6 feet * x inches

8y = 6x

x = (8/6) y

x = (4/3) y

This means that the length in the drawing is (4/3) times the length in real life.

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The graph of the equation, which looks like the below diagram.

The term "graph" can refer to a visual representation of data or information, typically in the form of a diagram or chart. Graphs can be used to show relationships or patterns between different sets of data.

The given equation is:

h = 3 sin(π/2(t + 2)) + 5

This is a sinusoidal function with an amplitude of 3, a period of 4, a phase shift of -2, and a vertical shift of 5.

To graph this function, we can plot a few points and connect them with a smooth curve. For example, we can choose some values of t and calculate the corresponding values of h:

t = -4: h = 2

t = -3: h = 5

t = -2: h = 8

t = -1: h = 5

t = 0: h = 2

t = 1: h = -1

t = 2: h = 2

t = 3: h = 5

t = 4: h = 8

Using these values, we can sketch the graph of the function. The amplitude is 3, so the maximum height of the ball is 3 units above and below the vertical shift of 5. The period is 4 seconds, since the frequency is 2π/B = 4. The phase shift is to the left by 2 seconds. Therefore, the graph of the equation is as follows:

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Complete question is:

The average growth rate is 1.34%, which is calculated by the sum of the growth rates divided by the number of growth rates.

To calculate the average growth rate, we need to add up the given growth rates and then divide by the number of growth rates.

1. First, add up the given growth rates: 1.50% + 1.60% + .20% + .20% + 3.20% = 6.70%
2. Next, divide the sum by the number of growth rates: 6.70% / 5 = 1.34%
3. Finally, round the answer to 2 decimal places: 1.34%

Therefore, the average growth rate is 1.34%.

Answer: 1.34%.

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The Ravel Leisure Magazine's annual list of the best hotels in the world is a content-loaded resource that provides valuable information for travelers. Each hotel on the list is rated and includes a brief description of the size.  Here is a sample of the top-rated hotels on the list: The Ritz-Carlton, The Peninsula and The Four Seasons

The Ritz-Carlton, Bali: This luxurious hotel boasts a stunning beachfront location, spacious suites, and top-of-the-line amenities, including a spa and multiple dining options. The cost per night for a double room is $450.

The Peninsula, Hong Kong: This iconic hotel offers unparalleled views of Victoria Harbour, along with world-class amenities, such as a rooftop infinity pool and award-winning restaurants. The cost per night for a double room is $700.

The Four Seasons, Paris: This elegant hotel is located in the heart of Paris and features opulent rooms, a Michelin-starred restaurant, and a spa. The cost per night for a double room is $800.

These are just a few examples of the top-rated hotels on the Ravel Leisure Magazine's annual list. Each hotel offers a unique experience for travelers, making it a valuable resource for planning a leisure trip.

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The rate at which the distance from the plane to the station is increasing when it has a total distance of 5 miles away from the station is 656 mi/h (rounded to the nearest whole number).

To solve this problem, we can use the equation

rate = distance/time.

We know the distance and the time, so we can calculate the rate:
rate = 5 mi/ 1 hour

      = 5 mi/3600 sec

      = 5/3600 mi/sec

      = 0.00138889 mi/sec.
Multiplying this by 3600 to convert it to mi/h gives us 656 mi/h.
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The variance οf X is  2.716.

The geοmetric distributiοn is a discrete prοbability distributiοn that describes the number οf independent trials required tο achieve the first success in a series οf Bernοulli trials (i.e., a sequence οf independent binary events with a fixed prοbability οf success).

In the geοmetric distributiοn, the prοbability οf success οn each trial is denοted by p, and the prοbability οf failure (i.e., nοt achieving the desired οutcοme) is denοted by q = 1 - p. The randοm variable X represents the number οf trials required tο achieve the first success, and its probability distribution can be expressed as:

P(X = k) =  [tex]\mathrm{q^{(n-1)}}[/tex] × p

This is a prοblem abοut a discrete prοbability distributiοn called the geοmetric distributiοn. The prοbability οf an event οccurring οn the first trial is p, and the prοbability οf the event nοt οccurring οn the first trial is q = 1 - p. The prοbability that the event will οccur οn the nth trial is then given by:

P(X = n) = [tex]\mathrm{q^{(n-1)}}[/tex] × p

where X is the randοm variable representing the number οf trials required fοr the first οccurrence οf the event.

A.) Find P(X=3).

The car encοunters a red light fοr the first time οn the third day. Therefοre, we need tο calculate the prοbability that the car encοunters a green light οn the first twο days and a red light οn the third day:

P(X=3) = (0.45)¹ × (0.45)¹ × (0.10)¹ = 0.02025

B.) Find P(X ≤ 3)

Tο find the prοbability that the car encοunters a red light οn οr befοre the third day, we can sum the prοbabilities fοr X = 1, X = 2, and X = 3:

P(X ≤ 3) = P(X = 1) + P(X = 2) + P(X = 3)

= 0.45 + 0.450.55 + 0.450.55^2

= 0.92775

C.) Find μX

The mean οf the geοmetric distributiοn is given by:

μX = 1/p

where p is the prοbability οf the event οccurring οn any given trial. In this case, p is the prοbability οf encοuntering a red light, which is 0.45.

μX = 1/0.45

≈ 2.22

D.) Find σ²ₓ

The variance οf the geοmetric distributiοn is given by:

σ²ₓ = q/p²

where p is the prοbability οf the event οccurring οn any given trial, and q is the prοbability οf the event nοt οccurring οn any given trial. In this case, p is the prοbability οf encοuntering a red light, which is 0.45, and q is the prοbability οf encοuntering a green οr yellοw light, which is 0.55.

σ²ₓ = 0.55/0.45²

≈ 2.716

Therefοre, the variance οf X is apprοximately 2.716.

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Answer:

It's B.

Step-by-step explanation:

To make the given system of linear equations have no solution, we need the second equation to be inconsistent with the first equation. This means that the two equations must be parallel lines, and they cannot intersect at any point.

We can see that the first equation -7x + y = 3 has a slope of 7, since it can be written in slope-intercept form as y = 7x + 3. Therefore, to create a parallel line with the same slope of 7, we can choose the second equation to be:

B. -7x + y = -10

This equation has the same slope of 7 as the first equation, but it intersects the y-axis at a different point (-10 instead of 3). Therefore, the two lines are parallel and do not intersect, so the system of equations has no solution

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