You want to solve the following system of equations by addition. What should
you do first, so that one variable is eliminated when you add the equations?
-2x+4y= 10
3x-2y=-7
OA. Multiply the top equation by 2 and the bottom equation by 3.
B. Multiply the top equation by 3 and the bottom equation by-2.
C. Multiply the bottom equation by 2.
D. Multiply the top equation by -3.
SUBMIT

The slope is 1/19.5 and it is positive slope.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The formula to find the slope of a line is slope = (y₂-y₁)/(x₂-x₁).

Given that, the cost of tickets to the amusement park is $19.50 for 1 ticket and $78 for 4 tickets.

Here, the coordinates are (19.50, 1) and (78, 4)

Now, the slope = (4-1)/(78-19.50)

= 3/58.5

= 1/19.5

Therefore, the slope is 1/19.5 and it is positive slope.

To learn more about the slope of a line visit:

https://brainly.com/question/14511992.

#SPJ9

Answer:

30 degrees.

Step-by-step explanation:

Angles must add up to 180 so,

180 - 150 = 30.

(a) The particular solution, y_p is 7

(b) y_p is -4x

(c) y_p is -4x + 7

(d) y_p is 8x + (7/2)

To find a particular solution to a differential equation by inspection - is to assume a trial function that looks like the non-homogeneous part of the differential equation.

(a) Given y'' + 2y = 14.

Because the no non-homogeneous part of the differential equation, 14 is a constant, our trial function will be a constant too.

Let A be our trial function:

We need our trial differential equation y''_p + 2y_p = 14

Now, we differentiate y_p = A twice, to obtain y'_p and y''_p that will be substituted into the differential equation.

y'_p = 0

y''_p = 0

Substitution into the trial differential equation, we have.

0 + 2A = 14

A = 6/2 = 7

Therefore, the particular solution, y_p = A is 7

(b) y'' + 2y = −8x

Let y_p = Ax + B

y'_p = A

y''_p = 0

0 + 2(Ax + B) = -8x

2Ax + 2B = -8x

By inspection,

2B = 0 => B = 0

2A = -8 => A = -8/2 = -4

The particular solution y_p = Ax + B

is -4x

(c) y'' + 2y = −8x + 14

Let y_p = Ax + B

y'_p = A

y''_p = 0

0 + 2(Ax + B) = -8x + 14

2Ax + 2B = -8x + 14

By inspection,

2B = 14 => B = 14/2 = 7

2A = -8 => A = -8/2 = -4

The particular solution y_p = Ax + B

is -4x + 7

(d) Find a particular solution of y'' + 2y = 16x + 7

Let y_p = Ax + B

y'_p = A

y''_p = 0

0 + 2(Ax + B) = 16x + 7

2Ax + 2B = 16x + 7

By inspection,

2B = 7 => B = 7/2

2A = 16 => A = 16/2 = 8

The particular solution y_p = Ax + B

is 8x + (7/2)

Learn more about non-homogenous equations:

brainly.com/question/13110297

#SPJ4

Answer: 36

Step-by-step explanation:

g divided by 18 equals 2; g = 36 gifts.

The correct option is (3).

The fundamental ideas in number theory, measurement, and calculation are frequently referred to as "arithmetic" (which is derived from the Greek word "arithmos," "number"). (that is, the processes of addition, subtraction, multiplication, division, raising to powers, and extraction of roots).

As per the given data:

A community toy drive for holidays was organized my Max.

Each family has to donate a total of 2 gifts.

Total number of families were equal to 18.

Let's assume the total number of gifts from all the families is g.

For finding the equation to find the total number of gifts given by all the families:

g = Gifts given by each family × Number of families

g = 18 × 2

∴ g divided by 18 equals 2; g = 36 gifts.

Hence, g divided by 18 equals 2; g = 36 gifts.

To learn more about arithmetic, click:

brainly.com/question/23848329

#SPJ2

Charlie reads [tex]2\frac{1}{7}[/tex]  pages per minute.

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, Charlie reads [tex]1\frac{3}{7}[/tex] pages every [tex]\frac{2}{3}[/tex] minute.

Therefore, His unit rate can be obtained by dividing the number of pages by the amount of time which is,

= [tex]\frac{1\frac{3}{7}}{\frac{2}{3}}[/tex] pages per minute.

= (10/7)×(3/2) pages per minute.

= 30/14 pages per minute.

= 15/7 pages per minute.

= [tex]2\frac{1}{7}[/tex] pages per minute.

Q. Charlie reads quickly he reads [tex]1\frac{3}{7}[/tex] pages every [tex]\frac{2}{3}[/tex] minute, His unit rate of page per minute would be?

learn more about the unitary method here :

https://brainly.com/question/28276953

#SPJ1

Answer:

8

Step-by-step explanation:

0+3+6+9+11+13+14 = 56

56/7 = 8

1 can only be divided by one other integer except1, hence it is not a prime number.

Any natural number higher than 1 that is not the sum of two smaller natural numbers is referred to be a prime number. A composite number is a natural number greater than one that is not prime.

Given this definition, 1 is not a prime number because it can only be divided by one other integer, which is 1 itself.

Based on the explanation above, we can then conclude that 1 is not a prime number.

Learn more on prime number here: https://brainly.com/question/145452

#SPJ1

Answer:=3

Step-by-step explanation:  For 2x-5y=3 substitute

To calculate marginal utility, you need to determine the additional utility that a consumer derives from consuming an additional unit of a good or service. This involves finding the difference in total utility before and after consuming the additional unit.

Marginal utility is the additional utility (or satisfaction) that a consumer derives from consuming an additional unit of a good or service. To calculate marginal utility, you can follow these steps:

1. Determine the total utility that a consumer derives from consuming a certain amount of a good or service.

2. Increase the amount consumed by one unit.

3. Determine the new total utility that the consumer derives from consuming the additional unit.

4. Subtract the initial total utility from the new total utility to obtain the marginal utility of the additional unit.

Learn more about marginal utility here: brainly.com/question/14597445

#SPJ4

If FG is parallel to KL , then the ratio of FJ to KJ must be equal to GJ to JL. Therefore FG is not parallel to KL

Two objects are similar if they have the same shape, or if one has the same shape as the mirror image of the other. More precisely, one can be obtained from the other by uniformly scaling, possibly with additional translation, rotation and reflection.

The ratio of corresponding sides of Similar triangles are equal.

This means that 32/72 must be equal to 48/64

32/72 = 8/18 = 4/9

48/64 = 12/16 = 3/4

Since the ratio of the corresponding sides are not

equal ∆FGJ is not similar to JKL and thus FG is not parallel to KL

learn more about similar triangles from

https://brainly.com/question/14285697

#SPJ1

Answer:

He will need 6/5 cans of paint.

The answer could also be written as 1 1/5 cans of paint or 1.2 cans of paint.

Step-by-step explanation:

Since 2/5 filled 1/3 of the room, he will need 3 times that amount.

2/5 * 3/1 = 6/5

Answer:

Check below under ‘explanation’

Step-by-step explanation:

5 Units up means every point will move 5 units in the upward direction along the y- axis. Therefore the x- coordinates of every point will remain the same and only their y-coordinates will change:

Q’ = [tex](-8, -4)[/tex]

R’ = [tex](-2, -4)[/tex]

S’ = [tex](-2, 4)[/tex]

T’ = [tex](-8, 4)[/tex]

\

Overall, building a theory is a complex process that requires careful planning, attention to detail, and a willingness to remain open to alternative explanations and interpretations.

An important first step when building a theory is to formulate a clear and testable research question or hypothesis. A research question or hypothesis is a statement that suggests a relationship between two or more variables, and it guides the development of the theory. The research question or hypothesis should be specific, measurable, and falsifiable, meaning that it can be tested and potentially proven false through empirical research. Once a clear research question or hypothesis has been formulated, the researcher can then begin to gather and analyze data to support or refute the theory.

Another important first step when building a theory is to conduct a comprehensive review of existing literature and research in the field. This review helps the researcher to identify gaps or inconsistencies in current knowledge and to develop a clear understanding of the state of the field. This step can also help the researcher to refine their research question or hypothesis, as well as to identify potential variables and relationships that may be relevant to the theory.

Another important step when building a theory is to select an appropriate research design and methodology that will allow for the systematic collection and analysis of data. The research design should be aligned with the research question or hypothesis, and should enable the researcher to collect high-quality data that can be analyzed using appropriate statistical or qualitative methods.

In addition, it is important to be mindful of potential biases that can impact the development of a theory, such as confirmation bias or researcher bias. It is important for the researcher to be objective and to consider all possible explanations for their data, rather than solely seeking out evidence that supports their hypothesis or preconceived ideas.

To learn more about building a theory :

https://brainly.com/question/9688799

#SPJ4

Answer: To find the height of the flagpole, we can use the fact that the angles of depression and elevation are complementary angles, meaning that they add up to 90°.

Let's call the height of the flagpole "h". Then, we have:

h - 6 = h * tan(4°) (the height difference between Javier and the bottom of the flagpole)

and

h = 6 + h * tan(25°) (the height of the top of the flagpole as seen by Javier).

By substituting the first equation into the second, we can find h:

h = 6 + h * tan(25°)

h = 6 + h / tan(65°)

h * tan(65°) = 6 + h

h * tan(65°) - h = 6

h = 6 / (tan(65°) - 1)

Using a calculator, we find that h = approximately 43.3 feet. Rounding to the nearest foot, the height of the flagpole is 43 feet.

Step-by-step explanation:

Where may you be going with this?

A polynomial is an expression consisting of variables and coefficients and factoring is the process of breaking down a polynomial into simpler units

A polynomial is an expression consisting of variables and coefficients, which are combined using only addition, subtraction, and multiplication. For example, 3x^2 + 2x - 1 is a polynomial, where x is the variable, 3 and 2 are coefficients, and ^2 and ^1 are exponents.

Factoring is the process of breaking down a polynomial into simpler units, which can be multiplied together to obtain the original polynomial. The simplest units are usually linear expressions, which have the form ax + b, where a and b are coefficients. For example, the polynomial 3x^2 + 2x - 1 can be factored into (3x - 1)(x + 1) by identifying two linear expressions that when multiplied together produce the original polynomial.

Factoring is an important tool in algebra, as it can help to simplify expressions, solve equations, and identify the roots of a polynomial.

Learn more about factoring here

brainly.com/question/26354419

#SPJ4

10 mL is equal to 2 teaspoons or 0.67 tablespoons. One teaspoon is equal to 5 mL, so to convert 10 mL to teaspoons, divide 10 by 5. One tablespoon is equal to 15 mL, so to convert 10 mL to tablespoons, divide 10 by 15.

10 mL is equal to 2 teaspoons (tsp) or 0.67 tablespoons (tbsp).

One teaspoon is equal to 5 mL, so to convert 10 mL to teaspoons, you can divide 10 by 5, which gives:

10 mL / 5 mL/tsp = 2 tsp

Therefore, 10 mL is equal to 2 teaspoons.

One tablespoon is equal to 15 mL, so to convert 10 mL to tablespoons, you can divide 10 by 15, which gives:

10 mL / 15 mL/tbsp = 0.67 tbsp

Therefore, 10 mL is equal to approximately 0.67 tablespoons.

Learn more about metric systems here: brainly.com/question/29953513

#SPJ4

The radius of the circle is 7 centimeter.

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre.

We have to find the radius r of the circle when area is 153.9 square centimeter.

A=πr²

153.9=3.14r²

Divide both sides by 3.14

153.9/3.14=r²

49.01=r²

Take square root on both sides

r=7

Hence, the radius of the circle is 7 centimeter.

To learn more on Circles click:

https://brainly.com/question/11833983

#SPJ1

The ages of Gregory and Janet are 10 and 16 years respectively.

Gregory is six years younger than Janet. 7 years ago, Janet was thrice as old as Gregory. Therefore, the ages of Gregory and Janet are as follows:

Let

x = age of Janet

Gregory age = x - 6

x - 7 = 3(x - 6 - 7)

Hence,

x - 7 = 3(x - 13)

x - 7 = 3x - 39

x - 3x = -39 + 7

-2x = -32

divide both sides by -2

x = -32 / -2

x = 16 years

Therefore,

Janet age = 16 years

Gregory's age = 16 - 6 = 10 years

learn more on age here: https://brainly.com/question/14364437

#SPJ1

Janet's current age is 16 and Gregory's current age is 10

Let's start by using algebra to represent the information in the problem.

Let's assume that Janet's current age is "J" and Gregory's current age is "G".

From the first sentence, we know that:

G = J - 6

From the second sentence, we know that 7 years ago, Janet was thrice as old as Gregory.

J - 7 = 3(G - 7)

So, we have

J - 7 = 3(J - 6 - 7)

This gives

J - 7 = 3J - 39

So, we have

2J = 32

This gives

J = 16

This also means that

G = 16 - 6

G = 10

Hence, Gregory's age is 10

Read more about expression at

https://brainly.com/question/15775046

#SPJ1

Answer: 2

Step-by-step explanation:

List all the factors:

14:

1 x 14

2 x 7

46:

1 x 46

2 x 23

Two is the only greatest number that can go into both 46 and 14.

The Tracking Signal in Week 3 is -1.8.

The Tracking Signal in Week 3 can be calculated by using the following formula:

Tracking Signal = (Sum of Forecast Errors) / (Mean Absolute Deviation)

First, we need to calculate the forecast errors for each week:

Week 1 Forecast Error = Actual Demand - Forecast = 50 - 49 = 1
Week 2 Forecast Error = Actual Demand - Forecast = 54 - 56 = -2
Week 3 Forecast Error = Actual Demand - Forecast = 58 - 60 = -2

Next, we need to calculate the Mean Absolute Deviation (MAD):

MAD = (|1| + |-2| + |-2|) / 3 = (1 + 2 + 2) / 3 = 5 / 3 = 1.67

Finally, we can calculate the Tracking Signal:

Tracking Signal = (1 + -2 + -2) / 1.67 = -3 / 1.67 = -1.8

Therefore, the Tracking Signal in Week 3 is -1.8.

Learn more about Tracking Signal:

https://brainly.com/question/29345047

#SPJ11

The slopes for the given pairs of points are:

To find the slope of a line passing through two points (x1, y1) and (x2, y2), we use the formula:

slope = (y2 - y1) / (x2 - x1)

Using this formula for each pair of points, we get:

(19, 3), (20, 3)

slope = (3 - 3) / (20 - 19) = 0/1 = 0

(3,0), (-11, -15)

slope = (-15 - 0) / (-11 - 3) = -15 / -14 = 15/14

(19,-2), (-11, 10)

slope = (10 - (-2)) / (-11 - 19) = 12 / (-30) = -2/5

(6, -10), (-15, 15)

slope = (15 - (-10)) / (-15 - 6) = 25 / (-21) = -25/21

(12,-18), (-15, -18)

slope = (-18 - (-18)) / (-15 - 12) = 0 / (-27) = 0

(3,-20), (5, 8)

slope = (8 - (-20)) / (5 - 3) = 28 / 2 = 14

Learn more about slopes at:

https://brainly.com/question/16949303

#SPJ1

The size of the cube that can be used to fill the [tex]1\frac{2}{3}[/tex] inches, [tex]\frac{2}{3}[/tex] inch, [tex]2\frac{1}{3}[/tex] inches is the cube with edge length of 1/3 inches

A cube is a three dimensional solid with six congruent square faces.

The expression the height and length dimensions of the rectangular prism as improper fractions, indicates that we get;

Height = (1 2/3) cm = (3 × 1 + 2)/3 cm = 5/3 cm

Length = (2 1/3) cm = (3 × 2 + 1)/3 cm = 7/3 cm

The denominators of the dimensions of the height, length and width of the rectangular prism are equivalent to 3. The edge length of the cube that can be used to fill the container should have a denominator that is a factor of 3.

The size of the cube that can be used to fill the container is therefore the cube with side length of 1/3 inches

The volume of the container = (5/3) in × (2/3) in × (7/3) in = 70/27 in³

The volume of the (1/3) inch cube = (1/3) in ×(1/3) in ×(1/3) in = 1/27 in³

The number of 1/3 inch cubes that fills the container = (70/27)/(1/27) = 70

The possible dimensions of the rectangular prism container in the question obtained from a similar question posted online are;

Height = (1 2/3) centimeters

Width = (2/3) centimeters

Length = (2 1/3) centimeters

Learn more on fractions here: https://brainly.com/question/15587663

#SPJ1

Answer:

1/4

Step-by-step explanation:

400 divided by 1600 = [tex]\frac{400}{1600}[/tex]

We simplify by 400, and get the answer

1/4

Answer:

0.25 or 1/4

Step-by-step explanation:

1600/400

1600 cant go into 400 so you start with zero, add a decimal next to your zero, and carry down a 1. That then becomes 1600/4000 divide that and drop the decimal to equal 0.25.

Answer:

The value of [tex]x[/tex] is [tex]55\textdegree[/tex].

Step-by-step explanation:

A straight line is equal to 180 degrees.

So any angles that forms on the same side of a straight line always add to 180 degrees.

We are given an angle of [tex]130\textdegree[/tex] on the exterior of the triangle.

Lets call the angle next to that [tex]\angle B[/tex].

We can conclude that

[tex]\angle B+130=180[/tex]

[tex]\angle B=180-130[/tex]

[tex]\angle B=50[/tex]

The sum of the interior angles in a triangle is 180 degrees. This is because a triangle is a polygon with three sides and three angles, and the sum of the angles in any polygon can be found by using the formula:

sum of interior angles = (n - 2) x 180 degrees

Note: n is the number of sides.

A triangle has 3 sides. So substituting 3 in for n gives us

(3 - 2) x 180 degrees = 180 degrees

So the sum of the interior angles in a triangle is always 180 degrees.

[tex]x\textdegree=180\textdegree-75\textdegree-50\textdegree\\x\textdegree=55\textdegree[/tex]

Learn more about the sum of interior angles formula here

brainly.com/question/20485431

The sum of the given temperature measures as required is; -9°C.

It follows from the task content that the sum of the given temperature measures is to be determined.

Since the given temperatures are; -10°C; 24 °C; -12°C; 8°C; -1 °C.

Therefore, the sum of the temperatures can be determined as follows;

-10°C + 24 °C + -12°C + 8°C + -1 °C

= 9°C.

Ultimately, the sum of the given temperatures is; 9°C.

Read more on sum;

https://brainly.com/question/29666710

#SPJ1

Answer:

I got 7 as the answer

Step-by-step explanation:

I hope this helps!!

Answer: 89 mm^2; Option 1

Step-by-step explanation: Solve the area of the largest rectangle by multiplying 7 and 8. That equals 56. Then do 4 times six to get the area of the medium rectangle and thats 24. Do the same thing with the small square and you get nine. Add them up to get 89.

The solution to the system of equations:

y = -6x - 2

12x + 2y = -6

This is an inconsistent system of equations

What is an Equation ?

An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal. There are various parts of an equation which are, coefficients, variables, constants, terms, operators, expressions, and equal to sign.

For example, 3x+2y=0.

Types of equation

1. Linear Equation

2. Quadratic Equation

3. Cubic Equation

we can substitute the value of y from the first equation into the second equation:

12x + 2(-6x - 2) = -6

12x + -12x - 4 = -6

0x - 4 = -6

-4 = -6

This is an inconsistent system of equations, which means that there are no real solutions that satisfy both equations.

This means that there is no point at which both lines intersect and that the two lines are parallel, never meeting.

To know more about Equation check:

https://brainly.com/question/1529522

#SPJ1